Panduan Teknis

Telecom Base Station SPD Guide A telecom base station SPD solution is not a single surge protector. It is a coordinated protection structure for AC input, -48V DC power, signal/data…

EV Charging Station SPD Selection Guide EV charging stations should not be protected only at the charger terminal. A complete SPD design should consider the main distribution board, sub-distribution board,…

OEM / Private Label SPD Buying Guide Private Label SPD Manufacturer Checklist for OEM Buyers Before you put your brand on an SPD, confirm more than the logo. LEEYEE supports…

Technical wiring guide Need to wire an SPD remote alarm contact to a PLC digital input? This guide shows how to connect NO / NC / COM dry contacts to…

SPD Failure Check Guide Not sure whether the SPD in a distribution board, OEM panel, or solar combiner box has failed? This guide shows a practical inspection process for maintenance…

Maintenance & Replacement Guide Can you replace only the SPD cartridge? When an SPD indicator window turns red, or a remote signal contact sends an alarm, maintenance teams need a…

SPD Bulk Order Certificate Verification Before placing a bulk SPD order, do not check certificates only by looking at the logo. A useful certificate must be traceable, must cover the…

SPD Procurement Guide When buying surge protective devices, do not only ask whether the supplier has CE, TUV, CB or RoHS. The real question is whether those documents match the…

SPD Standard Guide for Buyers Buying an AC SPD? Check IEC 61643-11. Buying a PV/DC SPD for the solar DC side? Check IEC 61643-31. This guide explains the difference between…

Three-Phase SPD Wiring Guide Need a three-phase SPD wiring diagram for a distribution board, control panel, or OEM electrical cabinet? The key point is simple: a three-phase SPD is not…