{"id":29941,"date":"2026-07-09T13:38:35","date_gmt":"2026-07-09T05:38:35","guid":{"rendered":"https:\/\/www.cnspd.com\/?p=29941"},"modified":"2026-07-09T13:38:47","modified_gmt":"2026-07-09T05:38:47","slug":"spd-up-voltage-protection-level-guide-what-buyers-should-know","status":"publish","type":"post","link":"https:\/\/www.cnspd.com\/pt\/spd-up-voltage-protection-level\/","title":{"rendered":"SPD Up Voltage Protection Level Guide: What Buyers Should Know"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"29941\" class=\"elementor elementor-29941\" data-elementor-post-type=\"post\">\n\t\t\t\t<div class=\"elementor-element elementor-element-2ba30fd e-flex e-con-boxed e-con e-parent\" data-id=\"2ba30fd\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-e8f6ab2 elementor-widget elementor-widget-html\" data-id=\"e8f6ab2\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"html.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<style>\r\n  :root {\r\n    --ly-up-blue: #004898;\r\n    --ly-up-blue-dark: #00356f;\r\n    --ly-up-blue-soft: #eef5ff;\r\n    --ly-up-blue-lighter: #f7fbff;\r\n    --ly-up-text: #172033;\r\n    --ly-up-muted: #5f6b7a;\r\n    --ly-up-border: #dce7f5;\r\n    --ly-up-warning: #fff7e8;\r\n    --ly-up-warning-border: #f4c36b;\r\n    --ly-up-success: #edf8f2;\r\n    --ly-up-risk: #fff0f0;\r\n    --ly-up-radius: 18px;\r\n    --ly-up-shadow: 0 12px 32px rgba(0, 72, 152, 0.08);\r\n  }\r\n\r\n  .ly-up-article {\r\n    max-width: 880px;\r\n    margin: 0 auto;\r\n    padding: 28px 18px 72px;\r\n    color: var(--ly-up-text);\r\n    font-size: 17px;\r\n    line-height: 1.72;\r\n    font-family: inherit;\r\n  }\r\n\r\n  .ly-up-article * {\r\n    box-sizing: border-box;\r\n  }\r\n\r\n  .ly-up-kicker {\r\n    display: inline-flex;\r\n    align-items: center;\r\n    gap: 8px;\r\n    margin-bottom: 14px;\r\n    padding: 6px 12px;\r\n    border-radius: 999px;\r\n    background: var(--ly-up-blue-soft);\r\n    color: var(--ly-up-blue);\r\n    font-size: 13px;\r\n    font-weight: 700;\r\n    letter-spacing: 0.02em;\r\n  }\r\n\r\n  .ly-up-lead {\r\n    margin: 0 0 22px;\r\n    font-size: 21px;\r\n    line-height: 1.55;\r\n    font-weight: 600;\r\n    color: #10233f;\r\n  }\r\n\r\n  .ly-up-intro {\r\n    margin-bottom: 28px;\r\n  }\r\n\r\n  .ly-up-intro p {\r\n    margin: 0 0 14px;\r\n  }\r\n\r\n  .ly-up-answer {\r\n    margin: 24px 0;\r\n    padding: 22px 24px;\r\n    border-radius: 22px;\r\n    background: linear-gradient(135deg, #f7fbff 0%, #eef5ff 100%);\r\n    border: 1px solid var(--ly-up-border);\r\n    box-shadow: var(--ly-up-shadow);\r\n  }\r\n\r\n  .ly-up-answer b {\r\n    display: block;\r\n    margin-bottom: 8px;\r\n    color: var(--ly-up-blue);\r\n    font-size: 15px;\r\n    letter-spacing: 0.02em;\r\n    text-transform: uppercase;\r\n  }\r\n\r\n  .ly-up-answer p {\r\n    margin: 0;\r\n    color: #10233f;\r\n    font-size: 17px;\r\n    line-height: 1.65;\r\n    font-weight: 600;\r\n  }\r\n\r\n  .ly-up-note {\r\n    margin: 24px 0;\r\n    padding: 20px 22px;\r\n    border: 1px solid var(--ly-up-border);\r\n    border-left: 5px solid var(--ly-up-blue);\r\n    border-radius: var(--ly-up-radius);\r\n    background: var(--ly-up-blue-lighter);\r\n  }\r\n\r\n  .ly-up-note strong {\r\n    color: var(--ly-up-blue);\r\n  }\r\n\r\n  .ly-up-warning {\r\n    margin: 28px 0;\r\n    padding: 22px;\r\n    border: 1px solid var(--ly-up-warning-border);\r\n    border-left: 5px solid #e49a12;\r\n    border-radius: var(--ly-up-radius);\r\n    background: var(--ly-up-warning);\r\n  }\r\n\r\n  .ly-up-warning h3 {\r\n    margin-top: 0;\r\n    color: #8a5600;\r\n  }\r\n\r\n  .ly-up-section {\r\n    margin-top: 42px;\r\n  }\r\n\r\n  .ly-up-section h2 {\r\n    margin: 0 0 16px;\r\n    color: #10233f;\r\n    font-size: 30px;\r\n    line-height: 1.25;\r\n    letter-spacing: -0.02em;\r\n  }\r\n\r\n  .ly-up-section h3 {\r\n    margin: 26px 0 10px;\r\n    color: #15365f;\r\n    font-size: 23px;\r\n    line-height: 1.32;\r\n  }\r\n\r\n  .ly-up-section p {\r\n    margin: 0 0 15px;\r\n  }\r\n\r\n  .ly-up-section a {\r\n    color: var(--ly-up-blue);\r\n    text-decoration: underline;\r\n    text-underline-offset: 3px;\r\n    font-weight: 650;\r\n  }\r\n\r\n  .ly-up-quick {\r\n    margin: 26px 0 36px;\r\n    padding: 24px;\r\n    border-radius: 22px;\r\n    background: linear-gradient(135deg, #f7fbff 0%, #eef5ff 100%);\r\n    border: 1px solid var(--ly-up-border);\r\n    box-shadow: var(--ly-up-shadow);\r\n  }\r\n\r\n  .ly-up-quick h2 {\r\n    margin-top: 0;\r\n  }\r\n\r\n  .ly-up-quick-grid {\r\n    display: grid;\r\n    grid-template-columns: repeat(2, minmax(0, 1fr));\r\n    gap: 14px;\r\n    margin-top: 18px;\r\n  }\r\n\r\n  .ly-up-quick-card {\r\n    padding: 18px;\r\n    border-radius: 16px;\r\n    background: #fff;\r\n    border: 1px solid var(--ly-up-border);\r\n  }\r\n\r\n  .ly-up-quick-card b {\r\n    display: block;\r\n    margin-bottom: 6px;\r\n    color: var(--ly-up-blue);\r\n    font-size: 15px;\r\n  }\r\n\r\n  .ly-up-quick-card p {\r\n    margin: 0;\r\n    font-size: 15.5px;\r\n    line-height: 1.6;\r\n  }\r\n\r\n  .ly-up-figure {\r\n    margin: 28px 0 34px;\r\n    padding: 14px;\r\n    border-radius: 22px;\r\n    background: #fff;\r\n    border: 1px solid var(--ly-up-border);\r\n    box-shadow: var(--ly-up-shadow);\r\n  }\r\n\r\n  .ly-up-figure img {\r\n    display: block;\r\n    width: 100%;\r\n    height: auto;\r\n    border-radius: 16px;\r\n  }\r\n\r\n  .ly-up-figure figcaption {\r\n    margin: 12px 4px 2px;\r\n    color: var(--ly-up-muted);\r\n    font-size: 14px;\r\n    line-height: 1.55;\r\n    text-align: center;\r\n  }\r\n\r\n  .ly-up-table-wrap {\r\n    width: 100%;\r\n    margin: 20px 0 26px;\r\n    overflow-x: auto;\r\n    -webkit-overflow-scrolling: touch;\r\n    border-radius: 16px;\r\n    border: 1px solid var(--ly-up-border);\r\n    background: #fff;\r\n  }\r\n\r\n  .ly-up-table {\r\n    width: 100%;\r\n    min-width: 720px;\r\n    border-collapse: collapse;\r\n    background: #fff;\r\n  }\r\n\r\n  .ly-up-table th {\r\n    background: var(--ly-up-blue);\r\n    color: #fff;\r\n    text-align: left;\r\n    font-size: 14.5px;\r\n    line-height: 1.45;\r\n    padding: 14px 16px;\r\n    border-right: 1px solid rgba(255,255,255,0.22);\r\n  }\r\n\r\n  .ly-up-table td {\r\n    padding: 15px 16px;\r\n    vertical-align: top;\r\n    border-top: 1px solid var(--ly-up-border);\r\n    color: #263247;\r\n    font-size: 15.5px;\r\n    line-height: 1.6;\r\n  }\r\n\r\n  .ly-up-table tr:nth-child(even) td {\r\n    background: #f9fcff;\r\n  }\r\n\r\n  .ly-up-table td strong {\r\n    color: #10233f;\r\n  }\r\n\r\n  .ly-up-mini {\r\n    color: var(--ly-up-muted);\r\n    font-size: 14px;\r\n    line-height: 1.6;\r\n  }\r\n\r\n  .ly-up-formula {\r\n    margin: 20px 0;\r\n    padding: 20px;\r\n    border-radius: 18px;\r\n    background: #fff;\r\n    border: 1px dashed #9fbce2;\r\n    text-align: center;\r\n    color: #10233f;\r\n    font-size: 20px;\r\n    font-weight: 800;\r\n  }\r\n\r\n  .ly-up-formula-small {\r\n    margin: 20px 0;\r\n    padding: 18px 20px;\r\n    border-radius: 18px;\r\n    background: #f7fbff;\r\n    border: 1px dashed #9fbce2;\r\n    color: #10233f;\r\n    font-size: 17px;\r\n    line-height: 1.6;\r\n    font-weight: 700;\r\n  }\r\n\r\n  .ly-up-visual {\r\n    margin: 28px 0;\r\n    padding: 24px;\r\n    border: 1px solid var(--ly-up-border);\r\n    border-radius: 22px;\r\n    background: #fff;\r\n    box-shadow: var(--ly-up-shadow);\r\n  }\r\n\r\n  .ly-up-visual-title {\r\n    margin: 0 0 18px;\r\n    color: #10233f;\r\n    font-size: 20px;\r\n    font-weight: 800;\r\n  }\r\n\r\n  .ly-up-flow {\r\n    display: grid;\r\n    grid-template-columns: 1fr 44px 1fr 44px 1fr;\r\n    align-items: stretch;\r\n    gap: 10px;\r\n  }\r\n\r\n  .ly-up-flow-box {\r\n    min-height: 96px;\r\n    padding: 16px;\r\n    border-radius: 16px;\r\n    background: var(--ly-up-blue-lighter);\r\n    border: 1px solid var(--ly-up-border);\r\n    display: flex;\r\n    flex-direction: column;\r\n    justify-content: center;\r\n  }\r\n\r\n  .ly-up-flow-box b {\r\n    color: var(--ly-up-blue);\r\n    font-size: 14px;\r\n  }\r\n\r\n  .ly-up-flow-box span {\r\n    display: block;\r\n    margin-top: 5px;\r\n    color: #23304a;\r\n    font-size: 14.5px;\r\n    line-height: 1.45;\r\n  }\r\n\r\n  .ly-up-arrow {\r\n    display: flex;\r\n    align-items: center;\r\n    justify-content: center;\r\n    color: var(--ly-up-blue);\r\n    font-size: 28px;\r\n    font-weight: 900;\r\n  }\r\n\r\n  .ly-up-safe-risk {\r\n    display: grid;\r\n    grid-template-columns: 1fr 1fr;\r\n    gap: 14px;\r\n    margin: 18px 0 0;\r\n  }\r\n\r\n  .ly-up-safe,\r\n  .ly-up-risk {\r\n    padding: 18px;\r\n    border-radius: 16px;\r\n    border: 1px solid var(--ly-up-border);\r\n  }\r\n\r\n  .ly-up-safe {\r\n    background: var(--ly-up-success);\r\n  }\r\n\r\n  .ly-up-risk {\r\n    background: var(--ly-up-risk);\r\n  }\r\n\r\n  .ly-up-safe b,\r\n  .ly-up-risk b {\r\n    display: block;\r\n    margin-bottom: 6px;\r\n    color: #10233f;\r\n  }\r\n\r\n  .ly-up-list {\r\n    margin: 14px 0 0;\r\n    padding-left: 22px;\r\n  }\r\n\r\n  .ly-up-list li {\r\n    margin-bottom: 8px;\r\n  }\r\n\r\n  .ly-up-checklist {\r\n    margin: 24px 0;\r\n    padding: 24px;\r\n    border-radius: 22px;\r\n    border: 1px solid var(--ly-up-border);\r\n    background: var(--ly-up-blue-lighter);\r\n  }\r\n\r\n  .ly-up-checklist ul {\r\n    columns: 2;\r\n    column-gap: 34px;\r\n    margin: 14px 0 0;\r\n    padding-left: 20px;\r\n  }\r\n\r\n  .ly-up-checklist li {\r\n    break-inside: avoid;\r\n    margin-bottom: 9px;\r\n  }\r\n\r\n  .ly-up-cta {\r\n    margin: 34px 0;\r\n    padding: 26px;\r\n    border-radius: 24px;\r\n    background: linear-gradient(135deg, #00356f 0%, #004898 100%);\r\n    color: #fff;\r\n    box-shadow: 0 18px 42px rgba(0, 72, 152, 0.2);\r\n  }\r\n\r\n  .ly-up-cta h2,\r\n  .ly-up-cta h3 {\r\n    margin-top: 0;\r\n    color: #fff;\r\n  }\r\n\r\n  .ly-up-cta p {\r\n    color: rgba(255,255,255,0.92);\r\n  }\r\n\r\n  .ly-up-cta-actions {\r\n    display: flex;\r\n    flex-wrap: wrap;\r\n    gap: 12px;\r\n    margin-top: 18px;\r\n  }\r\n\r\n  .ly-up-btn,\r\n  .ly-up-btn:visited {\r\n    display: inline-flex !important;\r\n    align-items: center;\r\n    justify-content: center;\r\n    min-width: 220px;\r\n    min-height: 48px;\r\n    padding: 13px 20px;\r\n    border-radius: 999px;\r\n    border: 2px solid #fff;\r\n    background: #fff;\r\n    color: var(--ly-up-blue) !important;\r\n    text-decoration: none !important;\r\n    font-weight: 800;\r\n    line-height: 1.2 !important;\r\n    cursor: pointer;\r\n    white-space: nowrap;\r\n    visibility: visible !important;\r\n    opacity: 1 !important;\r\n  }\r\n\r\n  .ly-up-btn span,\r\n  .ly-up-btn:visited span {\r\n    display: inline-block !important;\r\n    color: var(--ly-up-blue) !important;\r\n    visibility: visible !important;\r\n    opacity: 1 !important;\r\n    line-height: 1.2 !important;\r\n    white-space: nowrap;\r\n  }\r\n\r\n  .ly-up-btn:hover {\r\n    transform: translateY(-1px);\r\n    box-shadow: 0 10px 22px rgba(0,0,0,0.16);\r\n  }\r\n\r\n  .ly-up-btn-secondary,\r\n  .ly-up-btn-secondary:visited {\r\n    background: transparent;\r\n    color: #fff !important;\r\n  }\r\n\r\n  .ly-up-btn-secondary span,\r\n  .ly-up-btn-secondary:visited span {\r\n    color: #fff !important;\r\n  }\r\n\r\n  .ly-up-faq {\r\n    margin-top: 22px;\r\n  }\r\n\r\n  .ly-up-faq details {\r\n    margin-bottom: 12px;\r\n    padding: 18px 20px;\r\n    border: 1px solid var(--ly-up-border);\r\n    border-radius: 16px;\r\n    background: #fff;\r\n  }\r\n\r\n  .ly-up-faq summary {\r\n    cursor: pointer;\r\n    font-weight: 800;\r\n    color: #10233f;\r\n  }\r\n\r\n  .ly-up-faq p {\r\n    margin: 12px 0 0;\r\n  }\r\n\r\n  .ly-up-related {\r\n    display: grid;\r\n    grid-template-columns: repeat(2, minmax(0, 1fr));\r\n    gap: 14px;\r\n    margin-top: 18px;\r\n  }\r\n\r\n  .ly-up-related a {\r\n    display: block;\r\n    padding: 18px;\r\n    border-radius: 16px;\r\n    border: 1px solid var(--ly-up-border);\r\n    background: #fff;\r\n    text-decoration: none;\r\n    color: #10233f;\r\n  }\r\n\r\n  .ly-up-related a strong {\r\n    display: block;\r\n    margin-bottom: 6px;\r\n    color: var(--ly-up-blue);\r\n  }\r\n\r\n  .ly-up-related a span {\r\n    display: block;\r\n    color: var(--ly-up-muted);\r\n    font-size: 14.5px;\r\n    line-height: 1.55;\r\n  }\r\n\r\n  @media (min-width: 1441px) {\r\n    .ly-up-article {\r\n      max-width: 900px;\r\n      padding-top: 34px;\r\n      padding-bottom: 86px;\r\n      font-size: 17.5px;\r\n    }\r\n\r\n    .ly-up-lead {\r\n      font-size: 22px;\r\n    }\r\n\r\n    .ly-up-section h2 {\r\n      font-size: 32px;\r\n    }\r\n\r\n    .ly-up-figure {\r\n      margin-left: -10px;\r\n      margin-right: -10px;\r\n    }\r\n  }\r\n\r\n  @media (min-width: 1366px) and (max-width: 1440px) {\r\n    .ly-up-article {\r\n      max-width: 880px;\r\n      padding-top: 30px;\r\n      padding-bottom: 78px;\r\n    }\r\n\r\n    .ly-up-section h2 {\r\n      font-size: 30px;\r\n    }\r\n  }\r\n\r\n  @media (min-width: 1280px) and (max-width: 1365px) {\r\n    .ly-up-article {\r\n      max-width: 860px;\r\n      padding-left: 18px;\r\n      padding-right: 18px;\r\n    }\r\n\r\n    .ly-up-section h2 {\r\n      font-size: 29px;\r\n    }\r\n\r\n    .ly-up-lead {\r\n      font-size: 20.5px;\r\n    }\r\n  }\r\n\r\n  @media (min-width: 1025px) and (max-width: 1279px) {\r\n    .ly-up-article {\r\n      max-width: 840px;\r\n      padding-left: 20px;\r\n      padding-right: 20px;\r\n      font-size: 16.8px;\r\n    }\r\n\r\n    .ly-up-section h2 {\r\n      font-size: 28.5px;\r\n    }\r\n\r\n    .ly-up-table {\r\n      min-width: 700px;\r\n    }\r\n  }\r\n\r\n  @media (min-width: 913px) and (max-width: 1024px) {\r\n    .ly-up-article {\r\n      max-width: 820px;\r\n      padding: 26px 22px 68px;\r\n      font-size: 16.8px;\r\n    }\r\n\r\n    .ly-up-lead {\r\n      font-size: 20px;\r\n    }\r\n\r\n    .ly-up-section h2 {\r\n      font-size: 28px;\r\n    }\r\n\r\n    .ly-up-section h3 {\r\n      font-size: 22px;\r\n    }\r\n\r\n    .ly-up-figure {\r\n      border-radius: 20px;\r\n      padding: 12px;\r\n    }\r\n\r\n    .ly-up-figure img {\r\n      border-radius: 14px;\r\n    }\r\n\r\n    .ly-up-table {\r\n      min-width: 700px;\r\n    }\r\n  }\r\n\r\n  @media (min-width: 821px) and (max-width: 912px) {\r\n    .ly-up-article {\r\n      max-width: 790px;\r\n      padding: 24px 22px 64px;\r\n      font-size: 16.6px;\r\n    }\r\n\r\n    .ly-up-lead {\r\n      font-size: 19.5px;\r\n    }\r\n\r\n    .ly-up-section {\r\n      margin-top: 40px;\r\n    }\r\n\r\n    .ly-up-section h2 {\r\n      font-size: 27px;\r\n    }\r\n\r\n    .ly-up-section h3 {\r\n      font-size: 21px;\r\n    }\r\n\r\n    .ly-up-quick-grid,\r\n    .ly-up-safe-risk,\r\n    .ly-up-related {\r\n      grid-template-columns: 1fr;\r\n    }\r\n\r\n    .ly-up-flow {\r\n      grid-template-columns: 1fr;\r\n      gap: 8px;\r\n    }\r\n\r\n    .ly-up-arrow {\r\n      transform: rotate(90deg);\r\n      min-height: 28px;\r\n    }\r\n\r\n    .ly-up-checklist ul {\r\n      columns: 1;\r\n    }\r\n\r\n    .ly-up-table {\r\n      min-width: 690px;\r\n    }\r\n  }\r\n\r\n  @media (min-width: 769px) and (max-width: 820px) {\r\n    .ly-up-article {\r\n      max-width: 760px;\r\n      padding: 24px 20px 62px;\r\n      font-size: 16.5px;\r\n      line-height: 1.7;\r\n    }\r\n\r\n    .ly-up-lead {\r\n      font-size: 19px;\r\n    }\r\n\r\n    .ly-up-section h2 {\r\n      font-size: 26.5px;\r\n    }\r\n\r\n    .ly-up-section h3 {\r\n      font-size: 20.5px;\r\n    }\r\n\r\n    .ly-up-quick-grid,\r\n    .ly-up-safe-risk,\r\n    .ly-up-related {\r\n      grid-template-columns: 1fr;\r\n    }\r\n\r\n    .ly-up-flow {\r\n      grid-template-columns: 1fr;\r\n      gap: 8px;\r\n    }\r\n\r\n    .ly-up-arrow {\r\n      transform: rotate(90deg);\r\n      min-height: 28px;\r\n    }\r\n\r\n    .ly-up-checklist ul {\r\n      columns: 1;\r\n    }\r\n\r\n    .ly-up-table {\r\n      min-width: 680px;\r\n    }\r\n  }\r\n\r\n  @media (min-width: 601px) and (max-width: 768px) {\r\n    .ly-up-article {\r\n      padding: 22px 18px 58px;\r\n      font-size: 16.5px;\r\n      line-height: 1.7;\r\n    }\r\n\r\n    .ly-up-lead {\r\n      font-size: 19px;\r\n    }\r\n\r\n    .ly-up-section {\r\n      margin-top: 38px;\r\n    }\r\n\r\n    .ly-up-section h2 {\r\n      font-size: 26px;\r\n    }\r\n\r\n    .ly-up-section h3 {\r\n      font-size: 20.5px;\r\n    }\r\n\r\n    .ly-up-quick-grid,\r\n    .ly-up-safe-risk,\r\n    .ly-up-related {\r\n      grid-template-columns: 1fr;\r\n    }\r\n\r\n    .ly-up-flow {\r\n      grid-template-columns: 1fr;\r\n      gap: 8px;\r\n    }\r\n\r\n    .ly-up-arrow {\r\n      transform: rotate(90deg);\r\n      min-height: 28px;\r\n    }\r\n\r\n    .ly-up-checklist ul {\r\n      columns: 1;\r\n    }\r\n\r\n    .ly-up-figure {\r\n      margin: 24px 0 30px;\r\n      padding: 12px;\r\n    }\r\n\r\n    .ly-up-figure figcaption {\r\n      font-size: 13.5px;\r\n    }\r\n\r\n    .ly-up-table {\r\n      min-width: 680px;\r\n    }\r\n  }\r\n\r\n  @media (min-width: 541px) and (max-width: 600px) {\r\n    .ly-up-article {\r\n      padding: 22px 14px 56px;\r\n      font-size: 16.2px;\r\n      line-height: 1.68;\r\n    }\r\n\r\n    .ly-up-kicker {\r\n      font-size: 12.5px;\r\n    }\r\n\r\n    .ly-up-lead {\r\n      font-size: 18.5px;\r\n    }\r\n\r\n    .ly-up-section h2 {\r\n      font-size: 25px;\r\n    }\r\n\r\n    .ly-up-section h3 {\r\n      font-size: 20px;\r\n    }\r\n\r\n    .ly-up-quick,\r\n    .ly-up-answer,\r\n    .ly-up-visual,\r\n    .ly-up-checklist,\r\n    .ly-up-cta,\r\n    .ly-up-note,\r\n    .ly-up-warning {\r\n      padding: 20px;\r\n      border-radius: 18px;\r\n    }\r\n\r\n    .ly-up-quick-grid,\r\n    .ly-up-safe-risk,\r\n    .ly-up-related {\r\n      grid-template-columns: 1fr;\r\n    }\r\n\r\n    .ly-up-flow {\r\n      grid-template-columns: 1fr;\r\n      gap: 8px;\r\n    }\r\n\r\n    .ly-up-arrow {\r\n      transform: rotate(90deg);\r\n      min-height: 28px;\r\n    }\r\n\r\n    .ly-up-checklist ul {\r\n      columns: 1;\r\n    }\r\n\r\n    .ly-up-table {\r\n      min-width: 660px;\r\n    }\r\n\r\n    .ly-up-cta-actions {\r\n      flex-direction: column;\r\n    }\r\n\r\n    .ly-up-btn,\r\n    .ly-up-btn:visited {\r\n      width: 100%;\r\n      min-width: 0;\r\n      white-space: normal;\r\n      text-align: center;\r\n    }\r\n\r\n    .ly-up-btn span {\r\n      white-space: normal;\r\n    }\r\n\r\n    .ly-up-figure {\r\n      margin-left: -2px;\r\n      margin-right: -2px;\r\n      padding: 10px;\r\n      border-radius: 18px;\r\n    }\r\n\r\n    .ly-up-figure img {\r\n      border-radius: 12px;\r\n    }\r\n  }\r\n\r\n  @media (min-width: 481px) and (max-width: 540px) {\r\n    .ly-up-article {\r\n      padding: 20px 14px 54px;\r\n      font-size: 16px;\r\n      line-height: 1.68;\r\n    }\r\n\r\n    .ly-up-kicker {\r\n      font-size: 12.3px;\r\n      padding: 6px 10px;\r\n    }\r\n\r\n    .ly-up-lead {\r\n      font-size: 18px;\r\n    }\r\n\r\n    .ly-up-answer p {\r\n      font-size: 16px;\r\n    }\r\n\r\n    .ly-up-section {\r\n      margin-top: 36px;\r\n    }\r\n\r\n    .ly-up-section h2 {\r\n      font-size: 24px;\r\n    }\r\n\r\n    .ly-up-section h3 {\r\n      font-size: 19.5px;\r\n    }\r\n\r\n    .ly-up-quick,\r\n    .ly-up-answer,\r\n    .ly-up-visual,\r\n    .ly-up-checklist,\r\n    .ly-up-cta,\r\n    .ly-up-note,\r\n    .ly-up-warning {\r\n      padding: 19px;\r\n      border-radius: 18px;\r\n    }\r\n\r\n    .ly-up-quick-grid,\r\n    .ly-up-safe-risk,\r\n    .ly-up-related {\r\n      grid-template-columns: 1fr;\r\n    }\r\n\r\n    .ly-up-flow {\r\n      grid-template-columns: 1fr;\r\n      gap: 8px;\r\n    }\r\n\r\n    .ly-up-arrow {\r\n      transform: rotate(90deg);\r\n      min-height: 28px;\r\n    }\r\n\r\n    .ly-up-checklist ul {\r\n      columns: 1;\r\n    }\r\n\r\n    .ly-up-table {\r\n      min-width: 640px;\r\n    }\r\n\r\n    .ly-up-table th,\r\n    .ly-up-table td {\r\n      padding: 13px 14px;\r\n      font-size: 14.5px;\r\n    }\r\n\r\n    .ly-up-cta-actions {\r\n      flex-direction: column;\r\n    }\r\n\r\n    .ly-up-btn,\r\n    .ly-up-btn:visited {\r\n      width: 100%;\r\n      min-width: 0;\r\n      white-space: normal;\r\n      text-align: center;\r\n    }\r\n\r\n    .ly-up-btn span {\r\n      white-space: normal;\r\n    }\r\n\r\n    .ly-up-figure {\r\n      margin-left: -2px;\r\n      margin-right: -2px;\r\n      padding: 10px;\r\n    }\r\n  }\r\n\r\n  @media (min-width: 431px) and (max-width: 480px) {\r\n    .ly-up-article {\r\n      padding: 20px 13px 52px;\r\n      font-size: 15.8px;\r\n      line-height: 1.67;\r\n    }\r\n\r\n    .ly-up-kicker {\r\n      font-size: 12px;\r\n      padding: 6px 10px;\r\n    }\r\n\r\n    .ly-up-lead {\r\n      font-size: 17.8px;\r\n      line-height: 1.5;\r\n    }\r\n\r\n    .ly-up-section {\r\n      margin-top: 35px;\r\n    }\r\n\r\n    .ly-up-section h2 {\r\n      font-size: 23.5px;\r\n    }\r\n\r\n    .ly-up-section h3 {\r\n      font-size: 19px;\r\n    }\r\n\r\n    .ly-up-answer p {\r\n      font-size: 15.8px;\r\n    }\r\n\r\n    .ly-up-quick,\r\n    .ly-up-answer,\r\n    .ly-up-visual,\r\n    .ly-up-checklist,\r\n    .ly-up-cta,\r\n    .ly-up-note,\r\n    .ly-up-warning {\r\n      padding: 18px;\r\n      border-radius: 17px;\r\n    }\r\n\r\n    .ly-up-quick-grid,\r\n    .ly-up-safe-risk,\r\n    .ly-up-related {\r\n      grid-template-columns: 1fr;\r\n    }\r\n\r\n    .ly-up-flow {\r\n      grid-template-columns: 1fr;\r\n      gap: 8px;\r\n    }\r\n\r\n    .ly-up-arrow {\r\n      transform: rotate(90deg);\r\n      min-height: 28px;\r\n    }\r\n\r\n    .ly-up-checklist ul {\r\n      columns: 1;\r\n      padding-left: 18px;\r\n    }\r\n\r\n    .ly-up-formula {\r\n      font-size: 16.5px;\r\n      padding: 16px;\r\n    }\r\n\r\n    .ly-up-formula-small {\r\n      font-size: 15.3px;\r\n      padding: 16px;\r\n    }\r\n\r\n    .ly-up-table {\r\n      min-width: 620px;\r\n    }\r\n\r\n    .ly-up-cta-actions {\r\n      flex-direction: column;\r\n    }\r\n\r\n    .ly-up-btn,\r\n    .ly-up-btn:visited {\r\n      width: 100%;\r\n      min-width: 0;\r\n      white-space: normal;\r\n      text-align: center;\r\n    }\r\n\r\n    .ly-up-btn span {\r\n      white-space: normal;\r\n    }\r\n\r\n    .ly-up-figure {\r\n      margin-left: -3px;\r\n      margin-right: -3px;\r\n      padding: 9px;\r\n      border-radius: 17px;\r\n    }\r\n\r\n    .ly-up-figure img {\r\n      border-radius: 11px;\r\n    }\r\n\r\n    .ly-up-figure figcaption {\r\n      font-size: 13px;\r\n      line-height: 1.45;\r\n    }\r\n  }\r\n\r\n  @media (min-width: 415px) and (max-width: 430px) {\r\n    .ly-up-article {\r\n      padding: 18px 12px 50px;\r\n      font-size: 15.7px;\r\n      line-height: 1.66;\r\n    }\r\n\r\n    .ly-up-kicker {\r\n      font-size: 11.8px;\r\n      padding: 5px 9px;\r\n    }\r\n\r\n    .ly-up-lead {\r\n      font-size: 17.4px;\r\n    }\r\n\r\n    .ly-up-section {\r\n      margin-top: 34px;\r\n    }\r\n\r\n    .ly-up-section h2 {\r\n      font-size: 23px;\r\n    }\r\n\r\n    .ly-up-section h3 {\r\n      font-size: 18.7px;\r\n    }\r\n\r\n    .ly-up-quick,\r\n    .ly-up-answer,\r\n    .ly-up-visual,\r\n    .ly-up-checklist,\r\n    .ly-up-cta,\r\n    .ly-up-note,\r\n    .ly-up-warning {\r\n      padding: 17px;\r\n      border-radius: 16px;\r\n    }\r\n\r\n    .ly-up-quick-card,\r\n    .ly-up-flow-box,\r\n    .ly-up-safe,\r\n    .ly-up-risk,\r\n    .ly-up-related a {\r\n      padding: 15px;\r\n    }\r\n\r\n    .ly-up-quick-grid,\r\n    .ly-up-safe-risk,\r\n    .ly-up-related {\r\n      grid-template-columns: 1fr;\r\n    }\r\n\r\n    .ly-up-flow {\r\n      grid-template-columns: 1fr;\r\n    }\r\n\r\n    .ly-up-arrow {\r\n      transform: rotate(90deg);\r\n      min-height: 26px;\r\n    }\r\n\r\n    .ly-up-checklist ul {\r\n      columns: 1;\r\n      padding-left: 18px;\r\n    }\r\n\r\n    .ly-up-table {\r\n      min-width: 600px;\r\n    }\r\n\r\n    .ly-up-table th,\r\n    .ly-up-table td {\r\n      padding: 12px 13px;\r\n      font-size: 14px;\r\n    }\r\n\r\n    .ly-up-cta-actions {\r\n      flex-direction: column;\r\n    }\r\n\r\n    .ly-up-btn,\r\n    .ly-up-btn:visited {\r\n      width: 100%;\r\n      min-width: 0;\r\n      white-space: normal;\r\n      text-align: center;\r\n      min-height: 48px;\r\n      padding: 13px 16px;\r\n    }\r\n\r\n    .ly-up-btn span {\r\n      white-space: normal;\r\n    }\r\n\r\n    .ly-up-figure {\r\n      margin-left: -3px;\r\n      margin-right: -3px;\r\n      padding: 8px;\r\n      border-radius: 16px;\r\n    }\r\n  }\r\n\r\n  @media (min-width: 391px) and (max-width: 414px) {\r\n    .ly-up-article {\r\n      padding: 18px 11px 48px;\r\n      font-size: 15.6px;\r\n      line-height: 1.65;\r\n    }\r\n\r\n    .ly-up-kicker {\r\n      font-size: 11.6px;\r\n      padding: 5px 9px;\r\n    }\r\n\r\n    .ly-up-lead {\r\n      font-size: 17.2px;\r\n    }\r\n\r\n    .ly-up-answer p {\r\n      font-size: 15.5px;\r\n    }\r\n\r\n    .ly-up-section {\r\n      margin-top: 33px;\r\n    }\r\n\r\n    .ly-up-section h2 {\r\n      font-size: 22.5px;\r\n    }\r\n\r\n    .ly-up-section h3 {\r\n      font-size: 18.5px;\r\n    }\r\n\r\n    .ly-up-quick,\r\n    .ly-up-answer,\r\n    .ly-up-visual,\r\n    .ly-up-checklist,\r\n    .ly-up-cta,\r\n    .ly-up-note,\r\n    .ly-up-warning {\r\n      padding: 16px;\r\n      border-radius: 16px;\r\n    }\r\n\r\n    .ly-up-quick-card,\r\n    .ly-up-flow-box,\r\n    .ly-up-safe,\r\n    .ly-up-risk,\r\n    .ly-up-related a {\r\n      padding: 14px;\r\n    }\r\n\r\n    .ly-up-quick-grid,\r\n    .ly-up-safe-risk,\r\n    .ly-up-related {\r\n      grid-template-columns: 1fr;\r\n    }\r\n\r\n    .ly-up-flow {\r\n      grid-template-columns: 1fr;\r\n    }\r\n\r\n    .ly-up-arrow {\r\n      transform: rotate(90deg);\r\n      min-height: 26px;\r\n    }\r\n\r\n    .ly-up-checklist ul {\r\n      columns: 1;\r\n      padding-left: 18px;\r\n    }\r\n\r\n    .ly-up-table {\r\n      min-width: 590px;\r\n    }\r\n\r\n    .ly-up-table th,\r\n    .ly-up-table td {\r\n      padding: 12px;\r\n      font-size: 13.8px;\r\n    }\r\n\r\n    .ly-up-cta-actions {\r\n      flex-direction: column;\r\n    }\r\n\r\n    .ly-up-btn,\r\n    .ly-up-btn:visited {\r\n      width: 100%;\r\n      min-width: 0;\r\n      white-space: normal;\r\n      text-align: center;\r\n      padding: 13px 15px;\r\n    }\r\n\r\n    .ly-up-btn span {\r\n      white-space: normal;\r\n    }\r\n\r\n    .ly-up-figure {\r\n      margin-left: -3px;\r\n      margin-right: -3px;\r\n      padding: 8px;\r\n      border-radius: 16px;\r\n    }\r\n\r\n    .ly-up-figure figcaption {\r\n      font-size: 12.8px;\r\n    }\r\n  }\r\n\r\n  @media (min-width: 376px) and (max-width: 390px) {\r\n    .ly-up-article {\r\n      padding: 17px 10px 46px;\r\n      font-size: 15.4px;\r\n      line-height: 1.64;\r\n    }\r\n\r\n    .ly-up-kicker {\r\n      font-size: 11.5px;\r\n      padding: 5px 8px;\r\n    }\r\n\r\n    .ly-up-lead {\r\n      font-size: 17px;\r\n    }\r\n\r\n    .ly-up-answer p {\r\n      font-size: 15.3px;\r\n    }\r\n\r\n    .ly-up-section {\r\n      margin-top: 32px;\r\n    }\r\n\r\n    .ly-up-section h2 {\r\n      font-size: 22px;\r\n    }\r\n\r\n    .ly-up-section h3 {\r\n      font-size: 18.2px;\r\n    }\r\n\r\n    .ly-up-quick,\r\n    .ly-up-answer,\r\n    .ly-up-visual,\r\n    .ly-up-checklist,\r\n    .ly-up-cta,\r\n    .ly-up-note,\r\n    .ly-up-warning {\r\n      padding: 15px;\r\n      border-radius: 15px;\r\n    }\r\n\r\n    .ly-up-quick-card,\r\n    .ly-up-flow-box,\r\n    .ly-up-safe,\r\n    .ly-up-risk,\r\n    .ly-up-related a {\r\n      padding: 14px;\r\n    }\r\n\r\n    .ly-up-quick-grid,\r\n    .ly-up-safe-risk,\r\n    .ly-up-related {\r\n      grid-template-columns: 1fr;\r\n    }\r\n\r\n    .ly-up-flow {\r\n      grid-template-columns: 1fr;\r\n    }\r\n\r\n    .ly-up-arrow {\r\n      transform: rotate(90deg);\r\n      min-height: 24px;\r\n    }\r\n\r\n    .ly-up-checklist ul {\r\n      columns: 1;\r\n      padding-left: 17px;\r\n    }\r\n\r\n    .ly-up-formula {\r\n      font-size: 15.6px;\r\n      padding: 14px;\r\n    }\r\n\r\n    .ly-up-formula-small {\r\n      font-size: 14.8px;\r\n      padding: 14px;\r\n    }\r\n\r\n    .ly-up-table {\r\n      min-width: 580px;\r\n    }\r\n\r\n    .ly-up-table th,\r\n    .ly-up-table td {\r\n      padding: 11px;\r\n      font-size: 13.6px;\r\n    }\r\n\r\n    .ly-up-cta-actions {\r\n      flex-direction: column;\r\n    }\r\n\r\n    .ly-up-btn,\r\n    .ly-up-btn:visited {\r\n      width: 100%;\r\n      min-width: 0;\r\n      white-space: normal;\r\n      text-align: center;\r\n      min-height: 47px;\r\n      padding: 12px 14px;\r\n      font-size: 15px;\r\n    }\r\n\r\n    .ly-up-btn span {\r\n      white-space: normal;\r\n    }\r\n\r\n    .ly-up-figure {\r\n      margin-left: -4px;\r\n      margin-right: -4px;\r\n      padding: 7px;\r\n      border-radius: 15px;\r\n    }\r\n\r\n    .ly-up-figure img {\r\n      border-radius: 10px;\r\n    }\r\n\r\n    .ly-up-figure figcaption {\r\n      font-size: 12.6px;\r\n    }\r\n  }\r\n\r\n  @media (min-width: 361px) and (max-width: 375px) {\r\n    .ly-up-article {\r\n      padding: 16px 10px 44px;\r\n      font-size: 15.2px;\r\n      line-height: 1.63;\r\n    }\r\n\r\n    .ly-up-kicker {\r\n      font-size: 11.3px;\r\n      padding: 5px 8px;\r\n    }\r\n\r\n    .ly-up-lead {\r\n      font-size: 16.8px;\r\n    }\r\n\r\n    .ly-up-answer p {\r\n      font-size: 15.1px;\r\n    }\r\n\r\n    .ly-up-section {\r\n      margin-top: 31px;\r\n    }\r\n\r\n    .ly-up-section h2 {\r\n      font-size: 21.5px;\r\n    }\r\n\r\n    .ly-up-section h3 {\r\n      font-size: 18px;\r\n    }\r\n\r\n    .ly-up-quick,\r\n    .ly-up-answer,\r\n    .ly-up-visual,\r\n    .ly-up-checklist,\r\n    .ly-up-cta,\r\n    .ly-up-note,\r\n    .ly-up-warning {\r\n      padding: 14px;\r\n      border-radius: 15px;\r\n    }\r\n\r\n    .ly-up-quick-card,\r\n    .ly-up-flow-box,\r\n    .ly-up-safe,\r\n    .ly-up-risk,\r\n    .ly-up-related a {\r\n      padding: 13px;\r\n    }\r\n\r\n    .ly-up-quick-grid,\r\n    .ly-up-safe-risk,\r\n    .ly-up-related {\r\n      grid-template-columns: 1fr;\r\n    }\r\n\r\n    .ly-up-flow {\r\n      grid-template-columns: 1fr;\r\n    }\r\n\r\n    .ly-up-arrow {\r\n      transform: rotate(90deg);\r\n      min-height: 24px;\r\n    }\r\n\r\n    .ly-up-checklist ul {\r\n      columns: 1;\r\n      padding-left: 17px;\r\n    }\r\n\r\n    .ly-up-table {\r\n      min-width: 560px;\r\n    }\r\n\r\n    .ly-up-table th,\r\n    .ly-up-table td {\r\n      padding: 10px;\r\n      font-size: 13.4px;\r\n    }\r\n\r\n    .ly-up-cta-actions {\r\n      flex-direction: column;\r\n    }\r\n\r\n    .ly-up-btn,\r\n    .ly-up-btn:visited {\r\n      width: 100%;\r\n      min-width: 0;\r\n      white-space: normal;\r\n      text-align: center;\r\n      min-height: 47px;\r\n      padding: 12px 13px;\r\n      font-size: 14.8px;\r\n    }\r\n\r\n    .ly-up-btn span {\r\n      white-space: normal;\r\n    }\r\n\r\n    .ly-up-figure {\r\n      margin-left: -4px;\r\n      margin-right: -4px;\r\n      padding: 7px;\r\n      border-radius: 15px;\r\n    }\r\n\r\n    .ly-up-figure figcaption {\r\n      font-size: 12.4px;\r\n    }\r\n  }\r\n\r\n  @media (min-width: 321px) and (max-width: 360px) {\r\n    .ly-up-article {\r\n      padding: 15px 9px 42px;\r\n      font-size: 15px;\r\n      line-height: 1.62;\r\n    }\r\n\r\n    .ly-up-kicker {\r\n      font-size: 11px;\r\n      padding: 5px 8px;\r\n    }\r\n\r\n    .ly-up-lead {\r\n      font-size: 16.5px;\r\n    }\r\n\r\n    .ly-up-answer p {\r\n      font-size: 14.8px;\r\n    }\r\n\r\n    .ly-up-section {\r\n      margin-top: 30px;\r\n    }\r\n\r\n    .ly-up-section h2 {\r\n      font-size: 21px;\r\n    }\r\n\r\n    .ly-up-section h3 {\r\n      font-size: 17.5px;\r\n    }\r\n\r\n    .ly-up-quick,\r\n    .ly-up-answer,\r\n    .ly-up-visual,\r\n    .ly-up-checklist,\r\n    .ly-up-cta,\r\n    .ly-up-note,\r\n    .ly-up-warning {\r\n      padding: 13px;\r\n      border-radius: 14px;\r\n    }\r\n\r\n    .ly-up-quick-card,\r\n    .ly-up-flow-box,\r\n    .ly-up-safe,\r\n    .ly-up-risk,\r\n    .ly-up-related a {\r\n      padding: 12px;\r\n    }\r\n\r\n    .ly-up-quick-grid,\r\n    .ly-up-safe-risk,\r\n    .ly-up-related {\r\n      grid-template-columns: 1fr;\r\n    }\r\n\r\n    .ly-up-flow {\r\n      grid-template-columns: 1fr;\r\n    }\r\n\r\n    .ly-up-arrow {\r\n      transform: rotate(90deg);\r\n      min-height: 22px;\r\n    }\r\n\r\n    .ly-up-checklist ul {\r\n      columns: 1;\r\n      padding-left: 16px;\r\n    }\r\n\r\n    .ly-up-formula {\r\n      font-size: 14.8px;\r\n      padding: 13px;\r\n    }\r\n\r\n    .ly-up-formula-small {\r\n      font-size: 14.4px;\r\n      padding: 13px;\r\n    }\r\n\r\n    .ly-up-table {\r\n      min-width: 540px;\r\n    }\r\n\r\n    .ly-up-table th,\r\n    .ly-up-table td {\r\n      padding: 10px;\r\n      font-size: 13.2px;\r\n    }\r\n\r\n    .ly-up-cta-actions {\r\n      flex-direction: column;\r\n    }\r\n\r\n    .ly-up-btn,\r\n    .ly-up-btn:visited {\r\n      width: 100%;\r\n      min-width: 0;\r\n      white-space: normal;\r\n      text-align: center;\r\n      min-height: 46px;\r\n      padding: 12px;\r\n      font-size: 14.5px;\r\n    }\r\n\r\n    .ly-up-btn span {\r\n      white-space: normal;\r\n    }\r\n\r\n    .ly-up-figure {\r\n      margin-left: -4px;\r\n      margin-right: -4px;\r\n      padding: 6px;\r\n      border-radius: 14px;\r\n    }\r\n\r\n    .ly-up-figure img {\r\n      border-radius: 9px;\r\n    }\r\n\r\n    .ly-up-figure figcaption {\r\n      font-size: 12.2px;\r\n    }\r\n  }\r\n\r\n  @media (max-width: 320px) {\r\n    .ly-up-article {\r\n      padding: 14px 8px 40px;\r\n      font-size: 14.8px;\r\n      line-height: 1.6;\r\n    }\r\n\r\n    .ly-up-kicker {\r\n      font-size: 10.8px;\r\n      padding: 5px 7px;\r\n      white-space: normal;\r\n    }\r\n\r\n    .ly-up-lead {\r\n      font-size: 16px;\r\n      line-height: 1.48;\r\n    }\r\n\r\n    .ly-up-answer p {\r\n      font-size: 14.6px;\r\n    }\r\n\r\n    .ly-up-section {\r\n      margin-top: 28px;\r\n    }\r\n\r\n    .ly-up-section h2 {\r\n      font-size: 20px;\r\n    }\r\n\r\n    .ly-up-section h3 {\r\n      font-size: 17px;\r\n    }\r\n\r\n    .ly-up-quick,\r\n    .ly-up-answer,\r\n    .ly-up-visual,\r\n    .ly-up-checklist,\r\n    .ly-up-cta,\r\n    .ly-up-note,\r\n    .ly-up-warning {\r\n      padding: 12px;\r\n      border-radius: 13px;\r\n    }\r\n\r\n    .ly-up-quick-card,\r\n    .ly-up-flow-box,\r\n    .ly-up-safe,\r\n    .ly-up-risk,\r\n    .ly-up-related a {\r\n      padding: 11px;\r\n    }\r\n\r\n    .ly-up-quick-grid,\r\n    .ly-up-safe-risk,\r\n    .ly-up-related {\r\n      grid-template-columns: 1fr;\r\n    }\r\n\r\n    .ly-up-flow {\r\n      grid-template-columns: 1fr;\r\n    }\r\n\r\n    .ly-up-arrow {\r\n      transform: rotate(90deg);\r\n      min-height: 22px;\r\n    }\r\n\r\n    .ly-up-checklist ul {\r\n      columns: 1;\r\n      padding-left: 16px;\r\n    }\r\n\r\n    .ly-up-formula {\r\n      font-size: 14.2px;\r\n      padding: 12px;\r\n    }\r\n\r\n    .ly-up-formula-small {\r\n      font-size: 14px;\r\n      padding: 12px;\r\n    }\r\n\r\n    .ly-up-table {\r\n      min-width: 520px;\r\n    }\r\n\r\n    .ly-up-table th,\r\n    .ly-up-table td {\r\n      padding: 9px;\r\n      font-size: 13px;\r\n    }\r\n\r\n    .ly-up-cta-actions {\r\n      flex-direction: column;\r\n    }\r\n\r\n    .ly-up-btn,\r\n    .ly-up-btn:visited {\r\n      width: 100%;\r\n      min-width: 0;\r\n      white-space: normal;\r\n      text-align: center;\r\n      min-height: 45px;\r\n      padding: 11px;\r\n      font-size: 14px;\r\n    }\r\n\r\n    .ly-up-btn span {\r\n      white-space: normal;\r\n    }\r\n\r\n    .ly-up-figure {\r\n      margin-left: -4px;\r\n      margin-right: -4px;\r\n      padding: 6px;\r\n      border-radius: 13px;\r\n    }\r\n\r\n    .ly-up-figure img {\r\n      border-radius: 8px;\r\n    }\r\n\r\n    .ly-up-figure figcaption {\r\n      font-size: 12px;\r\n    }\r\n  }\r\n<\/style>\r\n\r\n<article class=\"ly-up-article\">\r\n  <div class=\"ly-up-intro\">\r\n    <div class=\"ly-up-kicker\">SPD Parameter Guide \u00b7 Up \/ Residual Voltage<\/div>\r\n\r\n    <p class=\"ly-up-lead\">\r\n      When buyers compare surge protective devices, the Up value is often misunderstood. A lower Up usually means better voltage limitation, but it does not automatically mean the SPD is the right choice for every panel, system, or protected device.\r\n    <\/p>\r\n\r\n    <div class=\"ly-up-answer\">\r\n      <b>Direct answer<\/b>\r\n      <p>\r\n        Up, or voltage protection level, is the maximum residual voltage measured at SPD terminals during a specified surge test. A lower Up usually means better voltage limitation, but buyers must compare it under the same SPD Type, standard, voltage rating, discharge current condition, protection mode, and installation condition.\r\n      <\/p>\r\n    <\/div>\r\n\r\n    <p>\r\n      This guide explains what <strong>SPD Up voltage protection level<\/strong> means, how it relates to residual voltage and equipment impulse withstand voltage, and what buyers should check before confirming a model for distribution boards, OEM panels, industrial cabinets, and sensitive equipment.\r\n    <\/p>\r\n\r\n    <div class=\"ly-up-note\">\r\n      <strong>Simple meaning:<\/strong> Up tells you how much surge voltage may still appear at the SPD terminals when the SPD is discharging surge current. It is not the normal working voltage of the SPD. It is a protection performance value measured under defined test conditions.\r\n    <\/div>\r\n  <\/div>\r\n\r\n  <section class=\"ly-up-quick\">\r\n    <div id=\"ez-toc-container\" class=\"ez-toc-v2_0_85 counter-hierarchy ez-toc-counter ez-toc-custom ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"#\" data-href=\"https:\/\/www.cnspd.com\/pt\/spd-up-voltage-protection-level\/#quick-answer-what-should-buyers-know-about-spd-up\" >Quick Answer: What Should Buyers Know About SPD Up?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"#\" data-href=\"https:\/\/www.cnspd.com\/pt\/spd-up-voltage-protection-level\/#need-help-checking-whether-the-up-value-is-suitable\" >Need help checking whether the Up value is suitable?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"#\" data-href=\"https:\/\/www.cnspd.com\/pt\/spd-up-voltage-protection-level\/#what-does-up-mean-on-an-spd-datasheet\" >What Does Up Mean on an SPD Datasheet?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"#\" data-href=\"https:\/\/www.cnspd.com\/pt\/spd-up-voltage-protection-level\/#up-is-not-the-same-as-uc\" >Up Is Not the Same as Uc<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"#\" data-href=\"https:\/\/www.cnspd.com\/pt\/spd-up-voltage-protection-level\/#up-vs-residual-voltage-vs-clamping-voltage-vs-mov-voltage\" >Up vs Residual Voltage vs Clamping Voltage vs MOV Voltage<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"#\" data-href=\"https:\/\/www.cnspd.com\/pt\/spd-up-voltage-protection-level\/#up-and-equipment-impulse-withstand-voltage\" >Up and Equipment Impulse Withstand Voltage<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"#\" data-href=\"https:\/\/www.cnspd.com\/pt\/spd-up-voltage-protection-level\/#effective-protection-level-is-higher-than-datasheet-up\" >Effective Protection Level Is Higher Than Datasheet Up<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"#\" data-href=\"https:\/\/www.cnspd.com\/pt\/spd-up-voltage-protection-level\/#is-a-lower-up-value-always-better\" >Is a Lower Up Value Always Better?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"#\" data-href=\"https:\/\/www.cnspd.com\/pt\/spd-up-voltage-protection-level\/#how-different-spd-types-affect-up-selection\" >How Different SPD Types Affect Up Selection<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"#\" data-href=\"https:\/\/www.cnspd.com\/pt\/spd-up-voltage-protection-level\/#why-installation-cable-length-changes-the-real-protection-level\" >Why Installation Cable Length Changes the Real Protection Level<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"#\" data-href=\"https:\/\/www.cnspd.com\/pt\/spd-up-voltage-protection-level\/#up-must-be-checked-together-with-uc-in-imax-and-iimp\" >Up Must Be Checked Together With Uc, In, Imax, and Iimp<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"#\" data-href=\"https:\/\/www.cnspd.com\/pt\/spd-up-voltage-protection-level\/#common-up-ranges-buyers-may-see-on-datasheets\" >Common Up Ranges Buyers May See on Datasheets<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"#\" data-href=\"https:\/\/www.cnspd.com\/pt\/spd-up-voltage-protection-level\/#how-to-compare-up-between-suppliers\" >How to Compare Up Between Suppliers<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"#\" data-href=\"https:\/\/www.cnspd.com\/pt\/spd-up-voltage-protection-level\/#buyer-examples-how-to-read-up-in-real-projects\" >Buyer Examples: How to Read Up in Real Projects<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-15\" href=\"#\" data-href=\"https:\/\/www.cnspd.com\/pt\/spd-up-voltage-protection-level\/#send-your-panel-requirement-before-choosing-by-up\" >Send Your Panel Requirement Before Choosing by Up<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-16\" href=\"#\" data-href=\"https:\/\/www.cnspd.com\/pt\/spd-up-voltage-protection-level\/#before-ordering-information-to-send-the-supplier\" >Before Ordering: Information to Send the Supplier<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-17\" href=\"#\" data-href=\"https:\/\/www.cnspd.com\/pt\/spd-up-voltage-protection-level\/#faq-about-spd-up-voltage-protection-level\" >FAQ About SPD Up Voltage Protection Level<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-18\" href=\"#\" data-href=\"https:\/\/www.cnspd.com\/pt\/spd-up-voltage-protection-level\/#related-reading\" >Related Reading<\/a><\/li><\/ul><\/nav><\/div>\n<h2><span class=\"ez-toc-section\" id=\"quick-answer-what-should-buyers-know-about-spd-up\"><\/span>Quick Answer: What Should Buyers Know About SPD Up?<span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n\r\n    <div class=\"ly-up-quick-grid\">\r\n      <div class=\"ly-up-quick-card\">\r\n        <b>What is Up?<\/b>\r\n        <p>Up is the voltage protection level of an SPD. It is also commonly understood as residual voltage or let-through voltage during a surge test.<\/p>\r\n      <\/div>\r\n\r\n      <div class=\"ly-up-quick-card\">\r\n        <b>Is lower Up better?<\/b>\r\n        <p>Usually yes for voltage limitation. But Up must be checked together with Uc, In, Imax, Iimp, SPD Type, and installation cable length.<\/p>\r\n      <\/div>\r\n\r\n      <div class=\"ly-up-quick-card\">\r\n        <b>What is the real protection goal?<\/b>\r\n        <p>The voltage reaching downstream equipment should stay below the equipment impulse withstand level, with a reasonable safety margin.<\/p>\r\n      <\/div>\r\n\r\n      <div class=\"ly-up-quick-card\">\r\n        <b>What do many buyers miss?<\/b>\r\n        <p>The datasheet Up is measured at the SPD terminals. Long connection leads and backup protection may increase the actual voltage seen by protected equipment.<\/p>\r\n      <\/div>\r\n    <\/div>\r\n  <\/section>\r\n\r\n  <div class=\"ly-up-cta\">\r\n    <h2><span class=\"ez-toc-section\" id=\"need-help-checking-whether-the-up-value-is-suitable\"><\/span>Need help checking whether the Up value is suitable?<span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n    <p>\r\n      Send us your system voltage, grounding type, SPD Type, protected equipment, and cabinet layout. LEEYEE can help recommend a suitable SPD model for distribution boards, OEM panels, and project supply.\r\n    <\/p>\r\n    <div class=\"ly-up-cta-actions\">\r\n      <a href=\"javascript:void(0);\" class=\"ly-up-btn leeyee-site-popup-btn\" aria-label=\"Ask for SPD Up Selection Help\">\r\n        <span>Ask for SPD Up Selection Help<\/span>\r\n      <\/a>\r\n      <a href=\"https:\/\/www.cnspd.com\/shop\/surge-protective-device\/\" class=\"ly-up-btn ly-up-btn-secondary\">\r\n        <span>View SPD Products<\/span>\r\n      <\/a>\r\n    <\/div>\r\n  <\/div>\r\n\r\n  <section class=\"ly-up-section\">\r\n    <h2><span class=\"ez-toc-section\" id=\"what-does-up-mean-on-an-spd-datasheet\"><\/span>What Does Up Mean on an SPD Datasheet?<span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n\r\n    <p>\r\n      <strong>Up<\/strong> means <strong>voltage protection level<\/strong>. In practical purchasing language, it tells you the residual voltage level that may remain when the SPD conducts surge current under specified test conditions.\r\n    <\/p>\r\n\r\n    <p>\r\n      An SPD does not make the surge voltage disappear. It diverts surge current and limits the voltage to a lower level. That limited voltage is what buyers use Up to understand.\r\n    <\/p>\r\n\r\n    <figure class=\"ly-up-figure\">\r\n      <img loading=\"lazy\"\r\n        src=\"https:\/\/www.cnspd.com\/wp-content\/uploads\/2026\/07\/spd-up-voltage-protection-level-residual-voltage-scaled.webp\"\r\n        alt=\"SPD Up voltage protection level and residual voltage explanation diagram\"\r\n        width=\"1920\"\r\n        height=\"1080\"\r\n        loading=\"lazy\"\r\n        decoding=\"async\"\r\n      >\r\n      <figcaption>\r\n        Up is the residual voltage remaining after the SPD limits the incoming surge and diverts surge current to PE.\r\n      <\/figcaption>\r\n    <\/figure>\r\n\r\n    <div class=\"ly-up-formula\">\r\n      Surge voltage enters \u2192 SPD conducts \u2192 remaining voltage at SPD terminals = Up\r\n    <\/div>\r\n\r\n    <p>\r\n      This is why Up is very important for sensitive equipment. If the residual voltage is still higher than what the equipment can withstand, the downstream device may still be damaged even though an SPD is installed.\r\n    <\/p>\r\n  <\/section>\r\n\r\n  <section class=\"ly-up-section\">\r\n    <h2><span class=\"ez-toc-section\" id=\"up-is-not-the-same-as-uc\"><\/span>Up Is Not the Same as Uc<span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n\r\n    <p>\r\n      Buyers often compare Uc and Up together because both appear as voltage values on SPD datasheets. But they answer different questions.\r\n    <\/p>\r\n\r\n    <div class=\"ly-up-table-wrap\">\r\n      <table class=\"ly-up-table\">\r\n        <thead>\r\n          <tr>\r\n            <th>Parameter<\/th>\r\n            <th>Full Name<\/th>\r\n            <th>What It Tells You<\/th>\r\n            <th>Buyer Meaning<\/th>\r\n          <\/tr>\r\n        <\/thead>\r\n        <tbody>\r\n          <tr>\r\n            <td><strong>Uc<\/strong><\/td>\r\n            <td>Maximum continuous operating voltage<\/td>\r\n            <td>The highest voltage the SPD can withstand continuously without abnormal operation.<\/td>\r\n            <td>Use it to check whether the SPD can safely work on the actual system voltage.<\/td>\r\n          <\/tr>\r\n          <tr>\r\n            <td><strong>Up<\/strong><\/td>\r\n            <td>Voltage protection level<\/td>\r\n            <td>The residual voltage level at the SPD terminals during a specified surge test.<\/td>\r\n            <td>Use it to check whether downstream equipment can be protected from excessive surge voltage.<\/td>\r\n          <\/tr>\r\n        <\/tbody>\r\n      <\/table>\r\n    <\/div>\r\n\r\n    <p>\r\n      In simple terms: <strong>Uc tells you whether the SPD can live on the system. Up tells you how much voltage may still reach the equipment during a surge.<\/strong>\r\n    <\/p>\r\n\r\n    <p>\r\n      If you are still confirming Uc for AC systems, read our <a href=\"https:\/\/www.cnspd.com\/spd-uc-selection-guide\/\">SPD Uc Selection Guide<\/a> before comparing Up values.\r\n    <\/p>\r\n  <\/section>\r\n\r\n  <section class=\"ly-up-section\">\r\n    <h2><span class=\"ez-toc-section\" id=\"up-vs-residual-voltage-vs-clamping-voltage-vs-mov-voltage\"><\/span>Up vs Residual Voltage vs Clamping Voltage vs MOV Voltage<span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n\r\n    <p>\r\n      Buyers may see different words in datasheets, supplier emails, or general surge protection articles. These terms are related, but they should not always be treated as the same thing.\r\n    <\/p>\r\n\r\n    <div class=\"ly-up-table-wrap\">\r\n      <table class=\"ly-up-table\">\r\n        <thead>\r\n          <tr>\r\n            <th>Term<\/th>\r\n            <th>Practical Meaning<\/th>\r\n            <th>Buyer Use<\/th>\r\n            <th>Common Risk<\/th>\r\n          <\/tr>\r\n        <\/thead>\r\n        <tbody>\r\n          <tr>\r\n            <td><strong>Up<\/strong><\/td>\r\n            <td>Declared SPD voltage protection level under specified test conditions.<\/td>\r\n            <td>Use it for SPD protection coordination and equipment protection assessment.<\/td>\r\n            <td>Comparing Up without checking SPD Type, test condition, or protection mode.<\/td>\r\n          <\/tr>\r\n          <tr>\r\n            <td><strong>Residual voltage<\/strong><\/td>\r\n            <td>The voltage remaining while the SPD is conducting surge current.<\/td>\r\n            <td>A practical way to understand what Up means during surge limitation.<\/td>\r\n            <td>Assuming residual voltage at the SPD terminals is always the same as voltage at the equipment.<\/td>\r\n          <\/tr>\r\n          <tr>\r\n            <td><strong>Clamping voltage<\/strong><\/td>\r\n            <td>A common general term for voltage limitation behavior.<\/td>\r\n            <td>Can help explain the concept, but buyers must confirm whether the supplier means SPD Up or component data.<\/td>\r\n            <td>Mixing marketing language with standard datasheet parameters.<\/td>\r\n          <\/tr>\r\n          <tr>\r\n            <td><strong>MOV voltage<\/strong><\/td>\r\n            <td>A component-level parameter of the metal oxide varistor inside many SPDs.<\/td>\r\n            <td>Useful for component engineering, but not enough for selecting a finished SPD product.<\/td>\r\n            <td>Using MOV component data instead of the finished SPD datasheet value.<\/td>\r\n          <\/tr>\r\n        <\/tbody>\r\n      <\/table>\r\n    <\/div>\r\n\r\n    <div class=\"ly-up-note\">\r\n      <strong>Buyer takeaway:<\/strong> For finished SPD selection, use the complete SPD datasheet. Do not select a DIN rail SPD only by MOV component voltage or a vague \u201cclamping voltage\u201d claim.\r\n    <\/div>\r\n  <\/section>\r\n\r\n  <section class=\"ly-up-section\">\r\n    <h2><span class=\"ez-toc-section\" id=\"up-and-equipment-impulse-withstand-voltage\"><\/span>Up and Equipment Impulse Withstand Voltage<span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n\r\n    <p>\r\n      The real purpose of checking Up is not to choose the most attractive number on a label. The real purpose is to coordinate the SPD with the protected equipment.\r\n    <\/p>\r\n\r\n    <p>\r\n      The voltage reaching the downstream equipment should be lower than the equipment\u2019s impulse withstand voltage. For sensitive equipment, designers may need a lower effective protection level or additional coordinated SPD stages.\r\n    <\/p>\r\n\r\n    <figure class=\"ly-up-figure\">\r\n      <img loading=\"lazy\"\r\n        src=\"https:\/\/www.cnspd.com\/wp-content\/uploads\/2026\/07\/spd-up-vs-equipment-impulse-withstand-voltage-scaled.webp\"\r\n        alt=\"SPD Up compared with equipment impulse withstand voltage for protection coordination\"\r\n        width=\"1920\"\r\n        height=\"1080\"\r\n        loading=\"lazy\"\r\n        decoding=\"async\"\r\n      >\r\n      <figcaption>\r\n        The practical question is not only the datasheet Up value, but whether the installed protection level stays below the equipment impulse withstand voltage.\r\n      <\/figcaption>\r\n    <\/figure>\r\n\r\n    <div class=\"ly-up-visual\">\r\n      <p class=\"ly-up-visual-title\">Protection coordination logic<\/p>\r\n\r\n      <div class=\"ly-up-flow\">\r\n        <div class=\"ly-up-flow-box\">\r\n          <b>1. SPD datasheet Up<\/b>\r\n          <span>Residual voltage measured at SPD terminals.<\/span>\r\n        <\/div>\r\n\r\n        <div class=\"ly-up-arrow\">\u2192<\/div>\r\n\r\n        <div class=\"ly-up-flow-box\">\r\n          <b>2. Installed protection level<\/b>\r\n          <span>Up plus extra voltage caused by connection leads, layout, and backup protection.<\/span>\r\n        <\/div>\r\n\r\n        <div class=\"ly-up-arrow\">\u2192<\/div>\r\n\r\n        <div class=\"ly-up-flow-box\">\r\n          <b>3. Equipment withstand level<\/b>\r\n          <span>The protected device must be able to withstand the remaining surge voltage.<\/span>\r\n        <\/div>\r\n      <\/div>\r\n\r\n      <div class=\"ly-up-safe-risk\">\r\n        <div class=\"ly-up-safe\">\r\n          <b>Good coordination<\/b>\r\n          <p class=\"ly-up-mini\">Installed protection level is clearly below the equipment withstand level.<\/p>\r\n        <\/div>\r\n\r\n        <div class=\"ly-up-risk\">\r\n          <b>Risky coordination<\/b>\r\n          <p class=\"ly-up-mini\">Installed protection level is close to or above the equipment withstand level.<\/p>\r\n        <\/div>\r\n      <\/div>\r\n    <\/div>\r\n\r\n    <div class=\"ly-up-table-wrap\">\r\n      <table class=\"ly-up-table\">\r\n        <thead>\r\n          <tr>\r\n            <th>Protected Equipment<\/th>\r\n            <th>Buyer Concern<\/th>\r\n            <th>How to Read Up<\/th>\r\n          <\/tr>\r\n        <\/thead>\r\n        <tbody>\r\n          <tr>\r\n            <td>Main distribution board<\/td>\r\n            <td>Protection for switchgear and downstream circuits<\/td>\r\n            <td>Check Up together with SPD Type, Iimp \/ In, installation position, and equipment impulse withstand rating.<\/td>\r\n          <\/tr>\r\n          <tr>\r\n            <td>Sub-distribution board<\/td>\r\n            <td>Protection closer to loads<\/td>\r\n            <td>Type 2 SPD Up becomes more important because the SPD is closer to downstream equipment.<\/td>\r\n          <\/tr>\r\n          <tr>\r\n            <td>PLC or control cabinet<\/td>\r\n            <td>Sensitive electronics and control modules<\/td>\r\n            <td>A lower effective protection level may be required, often with coordinated upstream and downstream protection.<\/td>\r\n          <\/tr>\r\n          <tr>\r\n            <td>OEM electrical panel<\/td>\r\n            <td>Repeatable model selection for batch orders<\/td>\r\n            <td>Up should match the panel application, target market, system voltage, and required certification.<\/td>\r\n          <\/tr>\r\n          <tr>\r\n            <td>Solar inverter AC side<\/td>\r\n            <td>Protection for inverter input and control electronics<\/td>\r\n            <td>Check Up together with Uc, Type 2 or Type 1+2 requirement, earthing system, and cable length.<\/td>\r\n          <\/tr>\r\n        <\/tbody>\r\n      <\/table>\r\n    <\/div>\r\n  <\/section>\r\n\r\n  <section class=\"ly-up-section\">\r\n    <h2><span class=\"ez-toc-section\" id=\"effective-protection-level-is-higher-than-datasheet-up\"><\/span>Effective Protection Level Is Higher Than Datasheet Up<span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n\r\n    <p>\r\n      The Up value printed on the SPD datasheet is measured at the SPD terminals. In a real cabinet, the protected equipment may see a higher voltage because the installation adds extra voltage.\r\n    <\/p>\r\n\r\n    <div class=\"ly-up-formula-small\">\r\n      Installed effective protection level \u2248 SPD Up + voltage from connection leads + voltage from backup protection devices\r\n    <\/div>\r\n\r\n    <p>\r\n      This does not mean the datasheet Up is useless. It means buyers should use Up as the starting point, then check how the SPD will be installed in the actual panel.\r\n    <\/p>\r\n\r\n    <div class=\"ly-up-table-wrap\">\r\n      <table class=\"ly-up-table\">\r\n        <thead>\r\n          <tr>\r\n            <th>Factor<\/th>\r\n            <th>How It Can Increase Actual Protection Level<\/th>\r\n            <th>Buyer \/ Panel Builder Action<\/th>\r\n          <\/tr>\r\n        <\/thead>\r\n        <tbody>\r\n          <tr>\r\n            <td><strong>Connection lead length<\/strong><\/td>\r\n            <td>Long conductors add extra voltage during surge current flow.<\/td>\r\n            <td>Keep L\/N\/PE conductors short, direct, and without unnecessary loops.<\/td>\r\n          <\/tr>\r\n          <tr>\r\n            <td><strong>PE path<\/strong><\/td>\r\n            <td>A long or indirect PE path can reduce the real protection effect.<\/td>\r\n            <td>Use a short and direct PE connection to the grounding bar.<\/td>\r\n          <\/tr>\r\n          <tr>\r\n            <td><strong>Backup protection<\/strong><\/td>\r\n            <td>Fuses or breakers used for SPD backup protection may add voltage during surge conditions.<\/td>\r\n            <td>Follow the SPD manufacturer\u2019s recommended backup protection and installation method.<\/td>\r\n          <\/tr>\r\n          <tr>\r\n            <td><strong>Distance to equipment<\/strong><\/td>\r\n            <td>If protected equipment is far from the SPD, the equipment may still see a higher surge voltage.<\/td>\r\n            <td>Consider coordinated downstream Type 2 or Type 3 protection for sensitive loads.<\/td>\r\n          <\/tr>\r\n        <\/tbody>\r\n      <\/table>\r\n    <\/div>\r\n\r\n    <div class=\"ly-up-warning\">\r\n      <h3>Do not judge protection only by the label<\/h3>\r\n      <p>\r\n        A good SPD installed badly may give poor real protection. For OEM panels and distribution boards, Up should be checked together with wiring layout, cable length, backup protection, and the location of the protected equipment.\r\n      <\/p>\r\n    <\/div>\r\n  <\/section>\r\n\r\n  <section class=\"ly-up-section\">\r\n    <h2><span class=\"ez-toc-section\" id=\"is-a-lower-up-value-always-better\"><\/span>Is a Lower Up Value Always Better?<span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n\r\n    <p>\r\n      A lower Up value usually means the SPD limits surge voltage to a lower residual level. This is good for protecting downstream equipment.\r\n    <\/p>\r\n\r\n    <p>\r\n      But buyers should not select an SPD by Up alone. A very low Up value is not useful if the SPD does not match the system voltage, discharge current requirement, installation position, or SPD Type.\r\n    <\/p>\r\n\r\n    <div class=\"ly-up-warning\">\r\n      <h3>Important buyer warning<\/h3>\r\n      <p>\r\n        Do not ask only, \u201cWhich SPD has the lowest Up?\u201d A better question is: \u201cWhich SPD gives a suitable protection level for my equipment, while also matching Uc, In, Imax, Iimp, system voltage, grounding type, protection mode, and installation layout?\u201d\r\n      <\/p>\r\n    <\/div>\r\n\r\n    <div class=\"ly-up-table-wrap\">\r\n      <table class=\"ly-up-table\">\r\n        <thead>\r\n          <tr>\r\n            <th>Selection Mistake<\/th>\r\n            <th>Why It Is Risky<\/th>\r\n            <th>Better Buyer Action<\/th>\r\n          <\/tr>\r\n        <\/thead>\r\n        <tbody>\r\n          <tr>\r\n            <td>Choosing the lowest Up without checking Uc<\/td>\r\n            <td>The SPD may not be suitable for the real continuous operating voltage.<\/td>\r\n            <td>Confirm system voltage, voltage fluctuation, grounding system, and Uc first.<\/td>\r\n          <\/tr>\r\n          <tr>\r\n            <td>Comparing Type 1, Type 2, and Type 3 only by Up<\/td>\r\n            <td>Different SPD Types have different roles and test duties.<\/td>\r\n            <td>Compare Up within the correct SPD Type and installation position.<\/td>\r\n          <\/tr>\r\n          <tr>\r\n            <td>Comparing Up under different protection modes<\/td>\r\n            <td>L-PE, L-N, N-PE, and L-L values may not be directly interchangeable.<\/td>\r\n            <td>Check the same protection mode when comparing supplier datasheets.<\/td>\r\n          <\/tr>\r\n          <tr>\r\n            <td>Ignoring In, Imax, or Iimp<\/td>\r\n            <td>The SPD may have a good Up but insufficient discharge capacity for the risk level.<\/td>\r\n            <td>Check discharge current ratings together with Up.<\/td>\r\n          <\/tr>\r\n          <tr>\r\n            <td>Ignoring connection lead length<\/td>\r\n            <td>The actual protection level at the equipment may be higher than the datasheet Up.<\/td>\r\n            <td>Keep SPD connection conductors short and direct.<\/td>\r\n          <\/tr>\r\n          <tr>\r\n            <td>Using Type 3 SPD as main protection<\/td>\r\n            <td>Type 3 SPDs are normally for fine protection close to terminal equipment, not main incoming surge current duty.<\/td>\r\n            <td>Use coordinated Type 1 \/ Type 2 \/ Type 3 protection where required.<\/td>\r\n          <\/tr>\r\n        <\/tbody>\r\n      <\/table>\r\n    <\/div>\r\n  <\/section>\r\n\r\n  <section class=\"ly-up-section\">\r\n    <h2><span class=\"ez-toc-section\" id=\"how-different-spd-types-affect-up-selection\"><\/span>How Different SPD Types Affect Up Selection<span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n\r\n    <p>\r\n      Up must be understood together with SPD Type. A Type 1 SPD, Type 2 SPD, Type 1+2 SPD, and Type 3 SPD do not serve the same role in the protection system.\r\n    <\/p>\r\n\r\n    <div class=\"ly-up-table-wrap\">\r\n      <table class=\"ly-up-table\">\r\n        <thead>\r\n          <tr>\r\n            <th>SPD Type<\/th>\r\n            <th>Typical Installation Position<\/th>\r\n            <th>Main Selection Focus<\/th>\r\n            <th>How to Understand Up<\/th>\r\n          <\/tr>\r\n        <\/thead>\r\n        <tbody>\r\n          <tr>\r\n            <td><strong>Type 1 SPD<\/strong><\/td>\r\n            <td>Main incoming panel, lightning protection zone entry<\/td>\r\n            <td>Iimp, follow current behavior, system earthing, main protection coordination<\/td>\r\n            <td>Up matters, but Type 1 is mainly selected for lightning current discharge capability.<\/td>\r\n          <\/tr>\r\n          <tr>\r\n            <td><strong>Type 1+2 SPD<\/strong><\/td>\r\n            <td>Main distribution board where combined protection is required<\/td>\r\n            <td>Balance between lightning current capability and voltage limitation<\/td>\r\n            <td>Often used to reduce protection stages when the product is properly coordinated.<\/td>\r\n          <\/tr>\r\n          <tr>\r\n            <td><strong>Type 2 SPD<\/strong><\/td>\r\n            <td>Distribution board, sub-distribution board, OEM panel<\/td>\r\n            <td>Uc, In, Imax, Up, pole configuration, certification<\/td>\r\n            <td>Up is very important because Type 2 SPD is commonly used to protect downstream electrical equipment.<\/td>\r\n          <\/tr>\r\n          <tr>\r\n            <td><strong>Type 3 SPD<\/strong><\/td>\r\n            <td>Close to terminal equipment<\/td>\r\n            <td>Fine protection and coordination with upstream Type 1 \/ Type 2 SPD<\/td>\r\n            <td>Up is usually lower, but Type 3 should not be treated as a replacement for upstream surge protection.<\/td>\r\n          <\/tr>\r\n        <\/tbody>\r\n      <\/table>\r\n    <\/div>\r\n\r\n    <p>\r\n      For general SPD model selection beyond Up, you can also read our <a href=\"https:\/\/www.cnspd.com\/spd-selection-guide\/\">SPD Selection Guide<\/a>.\r\n    <\/p>\r\n  <\/section>\r\n\r\n  <section class=\"ly-up-section\">\r\n    <h2><span class=\"ez-toc-section\" id=\"why-installation-cable-length-changes-the-real-protection-level\"><\/span>Why Installation Cable Length Changes the Real Protection Level<span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n\r\n    <p>\r\n      The Up value on the datasheet is measured at the SPD terminals. In a real distribution board, the protected equipment may see a higher voltage because the SPD connection leads add extra voltage during surge current flow.\r\n    <\/p>\r\n\r\n    <p>\r\n      This is why installation is not just a wiring detail. It directly affects the actual protection result.\r\n    <\/p>\r\n\r\n    <div class=\"ly-up-note\">\r\n      <strong>Practical rule:<\/strong> Keep SPD connection leads short, straight, and direct. Avoid long loops. The conductor path from line to SPD and from SPD to PE should be as short as possible according to the installation requirement and local standard.\r\n    <\/div>\r\n\r\n    <h3>What buyers should ask installers or panel builders to confirm<\/h3>\r\n\r\n    <ul class=\"ly-up-list\">\r\n      <li>Where will the SPD be installed inside the cabinet?<\/li>\r\n      <li>How long are the conductors from busbar or terminal to the SPD?<\/li>\r\n      <li>How long is the PE connection path?<\/li>\r\n      <li>Is the PE path direct, or does it loop around other components?<\/li>\r\n      <li>Is the protected equipment far from the SPD?<\/li>\r\n      <li>Does the system need additional downstream Type 2 or Type 3 protection?<\/li>\r\n    <\/ul>\r\n  <\/section>\r\n\r\n  <section class=\"ly-up-section\">\r\n    <h2><span class=\"ez-toc-section\" id=\"up-must-be-checked-together-with-uc-in-imax-and-iimp\"><\/span>Up Must Be Checked Together With Uc, In, Imax, and Iimp<span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n\r\n    <p>\r\n      Up is a protection performance value. But it does not tell the full story of SPD selection.\r\n    <\/p>\r\n\r\n    <div class=\"ly-up-table-wrap\">\r\n      <table class=\"ly-up-table\">\r\n        <thead>\r\n          <tr>\r\n            <th>Parameter<\/th>\r\n            <th>What It Means<\/th>\r\n            <th>Why It Matters When Checking Up<\/th>\r\n          <\/tr>\r\n        <\/thead>\r\n        <tbody>\r\n          <tr>\r\n            <td><strong>Uc<\/strong><\/td>\r\n            <td>Maximum continuous operating voltage<\/td>\r\n            <td>If Uc is not suitable, the SPD may age early or fail under real grid conditions.<\/td>\r\n          <\/tr>\r\n          <tr>\r\n            <td><strong>Up<\/strong><\/td>\r\n            <td>Voltage protection level \/ residual voltage<\/td>\r\n            <td>Shows how much voltage may remain during a surge test.<\/td>\r\n          <\/tr>\r\n          <tr>\r\n            <td><strong>In<\/strong><\/td>\r\n            <td>Nominal discharge current<\/td>\r\n            <td>Shows routine surge discharge capability and durability under repeated surge stress.<\/td>\r\n          <\/tr>\r\n          <tr>\r\n            <td><strong>Imax<\/strong><\/td>\r\n            <td>Maximum discharge current for Type 2 SPD<\/td>\r\n            <td>Shows severe surge tolerance under the Type 2 test waveform.<\/td>\r\n          <\/tr>\r\n          <tr>\r\n            <td><strong>Iimp<\/strong><\/td>\r\n            <td>Impulse current for Type 1 SPD<\/td>\r\n            <td>Shows lightning current discharge capability for Type 1 applications.<\/td>\r\n          <\/tr>\r\n        <\/tbody>\r\n      <\/table>\r\n    <\/div>\r\n\r\n    <p>\r\n      Related guides:\r\n      <a href=\"https:\/\/www.cnspd.com\/spd-in-rating-selection\/\">SPD In Rating Selection<\/a>,\r\n      <a href=\"https:\/\/www.cnspd.com\/spd-imax-selection\/\">SPD Imax Selection<\/a>, and\r\n      <a href=\"https:\/\/www.cnspd.com\/iec-61643-11-vs-iec-61643-31\/\">IEC 61643-11 vs IEC 61643-31<\/a>.\r\n    <\/p>\r\n  <\/section>\r\n\r\n  <section class=\"ly-up-section\">\r\n    <h2><span class=\"ez-toc-section\" id=\"common-up-ranges-buyers-may-see-on-datasheets\"><\/span>Common Up Ranges Buyers May See on Datasheets<span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n\r\n    <p>\r\n      Different SPD Types and product designs may show different Up values. Do not compare the number without checking the application.\r\n    <\/p>\r\n\r\n    <div class=\"ly-up-table-wrap\">\r\n      <table class=\"ly-up-table\">\r\n        <thead>\r\n          <tr>\r\n            <th>Example Up Level<\/th>\r\n            <th>How Buyers May See It<\/th>\r\n            <th>Important Reminder<\/th>\r\n          <\/tr>\r\n        <\/thead>\r\n        <tbody>\r\n          <tr>\r\n            <td>\u2264 1.0 kV or lower<\/td>\r\n            <td>Often associated with fine protection, lower-voltage applications, or protection close to terminal equipment.<\/td>\r\n            <td>Check SPD Type, discharge current rating, system voltage, and whether it is suitable as main protection.<\/td>\r\n          <\/tr>\r\n          <tr>\r\n            <td>\u2264 1.2 kV \/ \u2264 1.5 kV<\/td>\r\n            <td>Commonly seen in many low-voltage DIN rail SPD datasheets.<\/td>\r\n            <td>Often attractive for distribution boards, but still check Uc, In, Imax, protection mode, and wiring length.<\/td>\r\n          <\/tr>\r\n          <tr>\r\n            <td>\u2264 2.0 kV \/ \u2264 2.5 kV<\/td>\r\n            <td>May appear on higher-energy or upstream protection devices.<\/td>\r\n            <td>Not automatically bad. It may be part of a coordinated upstream protection design.<\/td>\r\n          <\/tr>\r\n          <tr>\r\n            <td>Higher Up values<\/td>\r\n            <td>May appear depending on SPD Type, test condition, voltage rating, or protection mode.<\/td>\r\n            <td>Check whether additional downstream SPD is needed for sensitive equipment.<\/td>\r\n          <\/tr>\r\n        <\/tbody>\r\n      <\/table>\r\n    <\/div>\r\n\r\n    <p class=\"ly-up-mini\">\r\n      These are not universal recommendations. Actual Up values depend on SPD Type, system voltage, protection mode, test waveform, discharge current condition, and the manufacturer\u2019s datasheet. Always confirm the exact value from the product datasheet and required standard.\r\n    <\/p>\r\n  <\/section>\r\n\r\n  <section class=\"ly-up-section\">\r\n    <h2><span class=\"ez-toc-section\" id=\"how-to-compare-up-between-suppliers\"><\/span>How to Compare Up Between Suppliers<span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n\r\n    <p>\r\n      When comparing quotations from different SPD suppliers, do not compare only one number. Ask for the complete parameter context.\r\n    <\/p>\r\n\r\n    <figure class=\"ly-up-figure\">\r\n      <img loading=\"lazy\"\r\n        src=\"https:\/\/www.cnspd.com\/wp-content\/uploads\/2026\/07\/spd-up-selection-flow-for-buyers-scaled.webp\"\r\n        alt=\"SPD Up selection flow chart for OEM buyers and distribution board projects\"\r\n        width=\"1920\"\r\n        height=\"1080\"\r\n        loading=\"lazy\"\r\n        decoding=\"async\"\r\n      >\r\n      <figcaption>\r\n        For OEM buyers and distribution board projects, Up should be checked after confirming the protected equipment, system voltage, SPD Type, discharge current rating, and installation layout.\r\n      <\/figcaption>\r\n    <\/figure>\r\n\r\n    <div class=\"ly-up-checklist\">\r\n      <h3>Before comparing Up values, confirm:<\/h3>\r\n      <ul>\r\n        <li>SPD Type: Type 1, Type 1+2, Type 2, or Type 3<\/li>\r\n        <li>System voltage and required Uc<\/li>\r\n        <li>Protection mode: L-PE, L-N, N-PE, L-L<\/li>\r\n        <li>Nominal discharge current In<\/li>\r\n        <li>Maximum discharge current Imax<\/li>\r\n        <li>Impulse current Iimp for Type 1 SPD<\/li>\r\n        <li>Test waveform and standard<\/li>\r\n        <li>Number of poles and wiring system<\/li>\r\n        <li>Certification: CE, TUV, CB, or project-specific requirement<\/li>\r\n        <li>Installation position and expected cable length<\/li>\r\n      <\/ul>\r\n    <\/div>\r\n\r\n    <p>\r\n      For OEM and distributor orders, Up should be part of a full parameter confirmation process. It should not be treated as a standalone \u201cbest number\u201d.\r\n    <\/p>\r\n  <\/section>\r\n\r\n  <section class=\"ly-up-section\">\r\n    <h2><span class=\"ez-toc-section\" id=\"buyer-examples-how-to-read-up-in-real-projects\"><\/span>Buyer Examples: How to Read Up in Real Projects<span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n\r\n    <div class=\"ly-up-table-wrap\">\r\n      <table class=\"ly-up-table\">\r\n        <thead>\r\n          <tr>\r\n            <th>Project Situation<\/th>\r\n            <th>What the Buyer May Ask<\/th>\r\n            <th>Better Technical Response<\/th>\r\n          <\/tr>\r\n        <\/thead>\r\n        <tbody>\r\n          <tr>\r\n            <td>230\/400V distribution board<\/td>\r\n            <td>Can I choose the SPD with the lowest Up?<\/td>\r\n            <td>First confirm Uc, Type 2 requirement, In\/Imax, grounding system, protection mode, and installation lead length. Then compare Up.<\/td>\r\n          <\/tr>\r\n          <tr>\r\n            <td>Main incoming panel with external lightning protection<\/td>\r\n            <td>Is a low-Up Type 2 SPD enough?<\/td>\r\n            <td>Check whether Type 1 or Type 1+2 protection is required. Iimp may be more important at the incoming side.<\/td>\r\n          <\/tr>\r\n          <tr>\r\n            <td>PLC cabinet or sensitive control panel<\/td>\r\n            <td>Why do I still need downstream protection?<\/td>\r\n            <td>If the equipment is sensitive or far from the upstream SPD, coordinated Type 2 or Type 3 protection may be needed.<\/td>\r\n          <\/tr>\r\n          <tr>\r\n            <td>OEM panel for export<\/td>\r\n            <td>Which Up value should we put into the model requirement?<\/td>\r\n            <td>Define target market, system voltage, SPD Type, certification, protected equipment withstand level, and cabinet layout before finalizing the model.<\/td>\r\n          <\/tr>\r\n        <\/tbody>\r\n      <\/table>\r\n    <\/div>\r\n  <\/section>\r\n\r\n  <div class=\"ly-up-cta\">\r\n    <h2><span class=\"ez-toc-section\" id=\"send-your-panel-requirement-before-choosing-by-up\"><\/span>Send Your Panel Requirement Before Choosing by Up<span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n    <p>\r\n      For batch orders, OEM panels, and distribution board projects, LEEYEE can help check Up together with Uc, In, Imax, Iimp, grounding system, protection mode, backup protection, and cabinet installation layout.\r\n    <\/p>\r\n    <div class=\"ly-up-cta-actions\">\r\n      <a href=\"javascript:void(0);\" class=\"ly-up-btn leeyee-site-popup-btn\" aria-label=\"Send Your SPD Requirement\">\r\n        <span>Send Your SPD Requirement<\/span>\r\n      <\/a>\r\n      <a href=\"https:\/\/www.cnspd.com\/spd-selection-guide\/\" class=\"ly-up-btn ly-up-btn-secondary\">\r\n        <span>Read SPD Selection Guide<\/span>\r\n      <\/a>\r\n    <\/div>\r\n  <\/div>\r\n\r\n  <section class=\"ly-up-section\">\r\n    <h2><span class=\"ez-toc-section\" id=\"before-ordering-information-to-send-the-supplier\"><\/span>Before Ordering: Information to Send the Supplier<span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n\r\n    <p>\r\n      If you want a supplier to recommend the correct SPD instead of only sending a price list, provide the following information.\r\n    <\/p>\r\n\r\n    <div class=\"ly-up-checklist\">\r\n      <ul>\r\n        <li>Nominal system voltage<\/li>\r\n        <li>Maximum voltage fluctuation, if known<\/li>\r\n        <li>Grounding system: TN-S, TN-C-S, TT, or IT<\/li>\r\n        <li>SPD Type required: Type 1, Type 1+2, Type 2, or Type 3<\/li>\r\n        <li>Installation position: main panel, sub-panel, cabinet, or terminal equipment<\/li>\r\n        <li>Protected equipment type<\/li>\r\n        <li>Equipment impulse withstand voltage, if available<\/li>\r\n        <li>Required Uc<\/li>\r\n        <li>Required In \/ Imax \/ Iimp<\/li>\r\n        <li>Required Up or maximum acceptable protection level<\/li>\r\n        <li>Protection mode: L-PE, L-N, N-PE, or L-L<\/li>\r\n        <li>Backup protection requirement<\/li>\r\n        <li>Cabinet wiring layout or photo<\/li>\r\n        <li>Certification or standard requirement<\/li>\r\n        <li>OEM label, packaging, or private label requirement<\/li>\r\n      <\/ul>\r\n    <\/div>\r\n  <\/section>\r\n\r\n  <section class=\"ly-up-section\">\r\n    <h2><span class=\"ez-toc-section\" id=\"faq-about-spd-up-voltage-protection-level\"><\/span>FAQ About SPD Up Voltage Protection Level<span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n\r\n    <div class=\"ly-up-faq\">\r\n      <details>\r\n        <summary>What does Up mean on an SPD?<\/summary>\r\n        <p>\r\n          Up means voltage protection level. It describes the residual voltage that may appear at the SPD terminals when the SPD is discharging surge current under specified test conditions.\r\n        <\/p>\r\n      <\/details>\r\n\r\n      <details>\r\n        <summary>Is Up the same as residual voltage?<\/summary>\r\n        <p>\r\n          In buyer language, Up is often understood as the declared voltage protection level related to residual or let-through voltage. It helps buyers understand how much voltage may still reach downstream equipment during a surge event.\r\n        <\/p>\r\n      <\/details>\r\n\r\n      <details>\r\n        <summary>Is SPD Up the same as clamping voltage?<\/summary>\r\n        <p>\r\n          Not always. Clamping voltage is often used as a general term for voltage limitation, but finished SPD selection should use the declared Up value from the SPD datasheet. Buyers should not confuse SPD Up with MOV component voltage.\r\n        <\/p>\r\n      <\/details>\r\n\r\n      <details>\r\n        <summary>Is a lower Up SPD always better?<\/summary>\r\n        <p>\r\n          Lower Up is usually better for voltage limitation, but it is not the only selection factor. Buyers must also check Uc, In, Imax, Iimp, SPD Type, protection mode, grounding system, and installation cable length.\r\n        <\/p>\r\n      <\/details>\r\n\r\n      <details>\r\n        <summary>Can I choose SPD only by Up?<\/summary>\r\n        <p>\r\n          No. Up tells you the protection level, but it does not tell whether the SPD can safely operate on your system voltage or discharge the required surge current. It must be checked as part of a full SPD selection.\r\n        <\/p>\r\n      <\/details>\r\n\r\n      <details>\r\n        <summary>Why is the actual protection level higher than the datasheet Up?<\/summary>\r\n        <p>\r\n          Datasheet Up is measured at the SPD terminals. In a real cabinet, connection leads, PE path, backup protection devices, and installation layout can add extra voltage, so the equipment may see a higher effective protection level.\r\n        <\/p>\r\n      <\/details>\r\n\r\n      <details>\r\n        <summary>Why does cable length affect SPD protection?<\/summary>\r\n        <p>\r\n          During surge current flow, long or looped conductors add extra voltage. This can make the actual voltage at the protected equipment higher than the Up value shown on the SPD datasheet.\r\n        <\/p>\r\n      <\/details>\r\n\r\n      <details>\r\n        <summary>What Up value is suitable for a distribution board?<\/summary>\r\n        <p>\r\n          It depends on the system voltage, SPD Type, protected equipment, equipment impulse withstand level, protection mode, and installation layout. For standard distribution boards, Type 2 SPD Up is commonly checked together with Uc, In, and Imax.\r\n        <\/p>\r\n      <\/details>\r\n\r\n      <details>\r\n        <summary>Does Type 3 SPD have lower Up than Type 2 SPD?<\/summary>\r\n        <p>\r\n          Type 3 SPD is normally used close to terminal equipment and may have a lower protection level. But it should be coordinated with upstream Type 1 or Type 2 SPD and should not be used as the only main protection where high surge current discharge is required.\r\n        <\/p>\r\n      <\/details>\r\n\r\n      <details>\r\n        <summary>What should OEM buyers confirm before ordering SPD by Up value?<\/summary>\r\n        <p>\r\n          OEM buyers should confirm system voltage, Uc, SPD Type, pole configuration, In, Imax or Iimp, protection mode, required standard, protected equipment, installation position, backup protection, and label or packaging requirements.\r\n        <\/p>\r\n      <\/details>\r\n    <\/div>\r\n  <\/section>\r\n\r\n  <section class=\"ly-up-section\">\r\n    <h2><span class=\"ez-toc-section\" id=\"related-reading\"><\/span>Related Reading<span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n\r\n    <div class=\"ly-up-related\">\r\n      <a href=\"https:\/\/www.cnspd.com\/spd-uc-selection-guide\/\">\r\n        <strong>SPD Uc Selection Guide<\/strong>\r\n        <span>Understand how to choose Uc for AC distribution boards and OEM orders.<\/span>\r\n      <\/a>\r\n\r\n      <a href=\"https:\/\/www.cnspd.com\/spd-in-rating-selection\/\">\r\n        <strong>SPD In Rating Selection<\/strong>\r\n        <span>Learn how nominal discharge current affects SPD durability and selection.<\/span>\r\n      <\/a>\r\n\r\n      <a href=\"https:\/\/www.cnspd.com\/spd-imax-selection\/\">\r\n        <strong>SPD Imax Selection<\/strong>\r\n        <span>Compare 20kA, 40kA, 65kA, and 80kA for Type 2 SPD applications.<\/span>\r\n      <\/a>\r\n\r\n      <a href=\"https:\/\/www.cnspd.com\/spd-for-distribution-board\/\">\r\n        <strong>SPD for Distribution Board<\/strong>\r\n        <span>See how SPDs are selected for AC panels and distribution systems.<\/span>\r\n      <\/a>\r\n    <\/div>\r\n  <\/section>\r\n<\/article>\r\n\r\n<script>\r\n  document.addEventListener('DOMContentLoaded', function () {\r\n    var aboutPopupButtons = document.querySelectorAll('.leeyee-site-popup-btn');\r\n\r\n    aboutPopupButtons.forEach(function (button) {\r\n      button.addEventListener('click', function (event) {\r\n        event.preventDefault();\r\n\r\n        var realPopupTrigger = document.querySelector('.w-popup.ush_popup_1 .w-popup-trigger');\r\n\r\n        if (realPopupTrigger) {\r\n          realPopupTrigger.click();\r\n        } else {\r\n          window.open('https:\/\/www.cnspd.com\/contact\/', '_blank', 'noopener');\r\n        }\r\n      });\r\n    });\r\n  });\r\n<\/script>\r\n\r\n<script type=\"application\/ld+json\">\r\n{\r\n  \"@context\": \"https:\/\/schema.org\",\r\n  \"@type\": \"Article\",\r\n  \"headline\": \"SPD Up Voltage Protection Level Guide: What Buyers Should Know\",\r\n  \"description\": \"Learn what SPD Up voltage protection level means, how it relates to residual voltage, clamping voltage, equipment withstand voltage, and why lower Up is not the only selection factor.\",\r\n  \"author\": {\r\n    \"@type\": \"Organization\",\r\n    \"name\": \"LEEYEE\"\r\n  },\r\n  \"publisher\": {\r\n    \"@type\": \"Organization\",\r\n    \"name\": \"LEEYEE\",\r\n    \"url\": \"https:\/\/www.cnspd.com\/\"\r\n  },\r\n  \"image\": [\r\n    \"https:\/\/www.cnspd.com\/wp-content\/uploads\/2026\/07\/spd-up-voltage-protection-level-residual-voltage-scaled.webp\",\r\n    \"https:\/\/www.cnspd.com\/wp-content\/uploads\/2026\/07\/spd-up-vs-equipment-impulse-withstand-voltage-scaled.webp\",\r\n    \"https:\/\/www.cnspd.com\/wp-content\/uploads\/2026\/07\/spd-up-selection-flow-for-buyers-scaled.webp\"\r\n  ],\r\n  \"mainEntityOfPage\": {\r\n    \"@type\": \"WebPage\",\r\n    \"@id\": \"https:\/\/www.cnspd.com\/spd-up-voltage-protection-level\/\"\r\n  }\r\n}\r\n<\/script>\r\n\r\n<script type=\"application\/ld+json\">\r\n{\r\n  \"@context\": \"https:\/\/schema.org\",\r\n  \"@type\": \"FAQPage\",\r\n  \"mainEntity\": [\r\n    {\r\n      \"@type\": \"Question\",\r\n      \"name\": \"What does Up mean on an SPD?\",\r\n      \"acceptedAnswer\": {\r\n        \"@type\": \"Answer\",\r\n        \"text\": \"Up means voltage protection level. It describes the residual voltage that may appear at the SPD terminals when the SPD is discharging surge current under specified test conditions.\"\r\n      }\r\n    },\r\n    {\r\n      \"@type\": \"Question\",\r\n      \"name\": \"Is Up the same as residual voltage?\",\r\n      \"acceptedAnswer\": {\r\n        \"@type\": \"Answer\",\r\n        \"text\": \"In buyer language, Up is often understood as the declared voltage protection level related to residual or let-through voltage. It helps buyers understand how much voltage may still reach downstream equipment during a surge event.\"\r\n      }\r\n    },\r\n    {\r\n      \"@type\": \"Question\",\r\n      \"name\": \"Is SPD Up the same as clamping voltage?\",\r\n      \"acceptedAnswer\": {\r\n        \"@type\": \"Answer\",\r\n        \"text\": \"Not always. Clamping voltage is often used as a general term for voltage limitation, but finished SPD selection should use the declared Up value from the SPD datasheet. Buyers should not confuse SPD Up with MOV component voltage.\"\r\n      }\r\n    },\r\n    {\r\n      \"@type\": \"Question\",\r\n      \"name\": \"Is a lower Up SPD always better?\",\r\n      \"acceptedAnswer\": {\r\n        \"@type\": \"Answer\",\r\n        \"text\": \"Lower Up is usually better for voltage limitation, but it is not the only selection factor. Buyers must also check Uc, In, Imax, Iimp, SPD Type, protection mode, grounding system, and installation cable length.\"\r\n      }\r\n    },\r\n    {\r\n      \"@type\": \"Question\",\r\n      \"name\": \"Can I choose SPD only by Up?\",\r\n      \"acceptedAnswer\": {\r\n        \"@type\": \"Answer\",\r\n        \"text\": \"No. Up tells you the protection level, but it does not tell whether the SPD can safely operate on your system voltage or discharge the required surge current. It must be checked as part of a full SPD selection.\"\r\n      }\r\n    },\r\n    {\r\n      \"@type\": \"Question\",\r\n      \"name\": \"Why is the actual protection level higher than the datasheet Up?\",\r\n      \"acceptedAnswer\": {\r\n        \"@type\": \"Answer\",\r\n        \"text\": \"Datasheet Up is measured at the SPD terminals. In a real cabinet, connection leads, PE path, backup protection devices, and installation layout can add extra voltage, so the equipment may see a higher effective protection level.\"\r\n      }\r\n    },\r\n    {\r\n      \"@type\": \"Question\",\r\n      \"name\": \"Why does cable length affect SPD protection?\",\r\n      \"acceptedAnswer\": {\r\n        \"@type\": \"Answer\",\r\n        \"text\": \"During surge current flow, long or looped conductors add extra voltage. This can make the actual voltage at the protected equipment higher than the Up value shown on the SPD datasheet.\"\r\n      }\r\n    },\r\n    {\r\n      \"@type\": \"Question\",\r\n      \"name\": \"What Up value is suitable for a distribution board?\",\r\n      \"acceptedAnswer\": {\r\n        \"@type\": \"Answer\",\r\n        \"text\": \"It depends on the system voltage, SPD Type, protected equipment, equipment impulse withstand level, protection mode, and installation layout. For standard distribution boards, Type 2 SPD Up is commonly checked together with Uc, In, and Imax.\"\r\n      }\r\n    },\r\n    {\r\n      \"@type\": \"Question\",\r\n      \"name\": \"Does Type 3 SPD have lower Up than Type 2 SPD?\",\r\n      \"acceptedAnswer\": {\r\n        \"@type\": \"Answer\",\r\n        \"text\": \"Type 3 SPD is normally used close to terminal equipment and may have a lower protection level. But it should be coordinated with upstream Type 1 or Type 2 SPD and should not be used as the only main protection where high surge current discharge is required.\"\r\n      }\r\n    },\r\n    {\r\n      \"@type\": \"Question\",\r\n      \"name\": \"What should OEM buyers confirm before ordering SPD by Up value?\",\r\n      \"acceptedAnswer\": {\r\n        \"@type\": \"Answer\",\r\n        \"text\": \"OEM buyers should confirm system voltage, Uc, SPD Type, pole configuration, In, Imax or Iimp, protection mode, required standard, protected equipment, installation position, backup protection, and label or packaging requirements.\"\r\n      }\r\n    }\r\n  ]\r\n}\r\n<\/script>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>SPD Parameter Guide \u00b7 Up \/ Residual Voltage When buyers compare surge protective devices, the Up value is often misunderstood. A lower Up usually means better voltage limitation, but it does not automatically mean the SPD is the right choice for every panel, system, or protected device. Direct answer Up, or voltage protection level, is&#8230;<\/p>","protected":false},"author":18,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-29941","post","type-post","status-publish","format-standard","hentry","category-news"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.9 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>SPD Up Voltage Protection Level Guide | Residual Voltage Explained<\/title>\n<meta name=\"description\" content=\"Learn what SPD Up voltage protection level means, how it relates to residual voltage, clamping voltage, equipment withstand voltage, and why lower Up is not the only selection factor.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.cnspd.com\/pt\/spd-up-voltage-protection-level\/\" \/>\n<meta property=\"og:locale\" content=\"pt_PT\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"SPD Up Voltage Protection Level Guide | Residual Voltage Explained\" \/>\n<meta property=\"og:description\" content=\"Learn what SPD Up voltage protection level means, how it relates to residual voltage, clamping voltage, equipment withstand voltage, and why lower Up is not the only selection factor.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.cnspd.com\/pt\/spd-up-voltage-protection-level\/\" \/>\n<meta property=\"og:site_name\" content=\"Surge Protector, Surge Arrestor, Isolating Switch - 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