Maximum string voltage
Start with module Voc, modules per string and the minimum design temperature. Confirm that the selected Ucpv remains above the calculated maximum operating condition.
PV Surge Protective Device Manufacturer
PV Surge Protective Devices for 600V, 1000V & 1500V Solar DC Systems
Type 2 and Type 1+2 PV DC SPDs for solar EPCs, combiner-box manufacturers, distributors and OEM projects—with model-specific voltage, pole, document and quotation confirmation.
Type 2 / Type 1+2
2P / 3P / D4
IEC 61643-31
OEM & Project Supply
1000V PV DC · Type 1+2
LY1-C40PV/2(S) 1000V
Ucpv
1000V DC In / Imax
20 / 40kA Iimp
6.25kA Up
3.6kV
1000V DC In / Imax
20 / 40kA Iimp
6.25kA Up
3.6kV
Voltage MatchingConfirm Ucpv against the calculated maximum string Voc.
Model-Specific FilesDatasheet and certificate scope checked by exact model.
Combiner & Inverter UseSelection support for the actual DC installation position.
OEM ConsistencyLabel, packaging and documents reviewed before batch supply.
Quick Selection
Confirm three items before selecting a solar PV SPD
A PV SPD should not be selected by the system’s marketing label alone. Use the project’s calculated maximum string voltage, lightning protection condition and wiring configuration.
Type 2 or Type 1+2
Type 2 is commonly used for induced and switching surges. Type 1+2 is evaluated where the lightning protection design indicates that partial lightning current may enter the PV circuit.
Poles and protection mode
Confirm the actual DC+ / DC− / PE arrangement, cabinet wiring diagram and whether a 2-pole, 3-pole or D4 configuration is required.
Buyer pre-selection: send the module Voc, modules per string, minimum design temperature, inverter or combiner-box position, grounding arrangement, cable length, external lightning protection condition and expected quantity.
Real Product Range
Compare LEEYEE PV surge protective device models
These model cards provide buyer-level pre-selection. Formal project use still requires confirmation of the latest datasheet, wiring diagram, backup protection and certificate scope.
600V DCType 23-Pole
LY1-C40PV/3(S) 600V
For 600V-class PV strings, combiner boxes and inverter DC inputs requiring a pluggable Class II / Type 2 DC SPD.
In / Imax20kA / 40kA, 8/20μs
Up≤ 2.2kV
ProtectionDC+–PE / DC−–PE
StandardIEC 61643-31:2018
1000V DCType 1+22-Pole
LY1-C40PV/2(S) 1000V
For common 1000V PV strings, combiner boxes and inverter DC inputs requiring positive and negative conductor protection.
In / Imax20kA / 40kA, 8/20μs
Iimp / Up6.25kA / 3.6kV
ProtectionDC+–PE / DC−–PE
StandardIEC 61643-31:2018
1000V DCType 1+23P D4
LY1-C40PV/3(S) 1000V (D4)
For multi-pole PV protection arrangements in combiner boxes and inverter cabinets that require the specific D4 wiring configuration.
In / Imax20kA / 40kA, 8/20μs
Iimp / Up6.25kA / 3.6kV
Configuration3-Pole pluggable D4
StandardIEC 61643-31:2018
1500V DCType 1+23P D4
LY1-C40PV/3(S) 1500V (D4)
For commercial and utility-scale 1500V PV systems, high-voltage combiner boxes, inverter DC inputs and DC protection panels.
In / Imax20kA / 40kA, 8/20μs
Iimp / Up6.25kA / 5.6kV
Configuration3P multi-pole design
StandardIEC 61643-31:2018
Document boundary: certification and test-document availability depends on the exact model, voltage, SPD type, pole structure and branding configuration. Request the latest document set before project filing, tender use or OEM marking.
Application Positions
Specify PV SPDs at the equipment protection points
Prioritize the DC-side positions that protect the array circuits, combiner box and inverter input. Coordinate AC and monitoring protection separately when the project architecture requires it.
ARRAYDC entry
PV array circuits
Review exposed string routes and the point where outdoor DC conductors enter the protected electrical zone.
DC SPDPrimary point
Combiner box
Install the selected PV SPD close to the string collection circuits and match Ucpv, Type and pole configuration to the box design.
INV DCProtected load
Inverter DC input
Protect the inverter DC terminals. Long routes may require coordinated protection at the combiner box and inverter ends.
AC SPDCoordination
Inverter AC output
Select the AC-side SPD according to the distribution system, voltage, Type, poles and upstream lightning protection concept.
DATACoordination
Monitoring lines
Review RS485, meter and data-logger lines separately when outdoor or long communication cables create an additional surge path.
Cable-length check: the need for protection at one or both ends depends on the route length, zoning, grounding and project design. Confirm this before final model approval.
Procurement Risk Control
Four mistakes that cause wrong PV SPD orders
Reliable procurement depends on the complete model, not only a “40kA” label or a nominal PV system voltage.
Using nominal voltage only
Maximum string Voc changes with module count and temperature. Confirm Ucpv against the calculated project condition.
Confusing Type 2 and Type 1+2
The selection should follow the lightning protection concept and possible current path, not a preference for a higher printed rating.
Ignoring pole configuration
A 2P, 3P or D4 product must match the actual DC+, DC−, PE and internal cabinet wiring arrangement.
Assuming every certificate covers every label
Confirm the exact model, voltage, pole structure, manufacturer and branding configuration before formal document use.
Testing & Evidence
Verify components, impulse performance and thermal safety
Testing evidence should answer a purchasing risk. Equipment photos alone do not replace model-specific declarations, datasheets or certificate scope.
Component validation
MOV and related component checks help control the core protection elements before assembly and batch release.
Impulse testing
Declared 8/20μs and 10/350μs performance must be reviewed against the exact PV SPD type and model.
Thermal safety review
Thermal behavior and disconnection performance are important when MOV elements age or experience abnormal electrical stress.
Ask for the latest datasheet, wiring diagram, certificate copy and scope sheet for the exact PV SPD model. Do not assume that one document automatically covers every voltage, pole option or OEM label.
OEM & Project Supply
Keep the product, label, packaging and documents consistent
LEEYEE supports solar distributors, combiner-box manufacturers, EPC suppliers and electrical brands with model confirmation before sample and batch production.
PV SPD supply support
Start with the exact PV SPD model and project requirement. We then align the product identity, buyer-facing materials and available documentation before approval.
Product identityLogo, label, color and agreed model naming.
PackagingInner box, outer carton and instruction-file alignment.
Technical filesDatasheet, wiring information and available document scope.
Approval controlArtwork, sample and production details confirmed before release.
Batch communicationAgreed inspection points and product-identity checks.
Consistency reviewProduct, label, packaging and documents checked as one set.
Requirement review
Confirm voltage, Type, poles, installation position, quantity and target-market documents.
Model and file confirmation
Match the exact product specification, wiring diagram and available document scope.
Sample or artwork approval
Confirm label, packaging, manual and other agreed OEM details before production.
Batch production and inspection
Check the agreed product identity, appearance and documentation before shipment.
Certification and test-document availability still depends on the exact model, voltage, pole structure and branding configuration.
FAQ
Solar PV SPD purchasing questions
How do I choose between a 600V, 1000V and 1500V PV SPD?
Use the calculated maximum PV string open-circuit voltage at the minimum design temperature, then confirm that the selected Ucpv, wiring configuration and project standard are suitable. Do not select only from the nominal system label.
When should I use a Type 1+2 PV SPD instead of Type 2?
Type 2 is commonly used for induced and switching surges. Type 1+2 is considered where the lightning protection design indicates that partial lightning current may enter the PV electrical system. Final selection depends on the site design, separation distance, cable routing and local requirements.
Can a 1000V PV SPD be installed in a 1500V system?
No. A 1000V product should not be assumed suitable for a 1500V circuit. The SPD voltage rating and all related parameters must match the calculated project condition.
Should the SPD be installed in the combiner box or at the inverter?
The answer depends on the cable length, system layout and protection design. Many systems require protection close to the combiner-box circuits, inverter DC input or both ends of a long route.
What information is needed for a model and quotation?
Send module Voc, modules per string, minimum design temperature, system voltage, installation position, grounding arrangement, required SPD Type, pole configuration, expected quantity and required documents.
Are CE, TÜV and CB documents available for every PV SPD?
Document availability and scope vary by exact model, voltage, pole structure and branding configuration. Request the latest model-specific file set before formal project or OEM use.
Request Model & Quote
Send your PV system details for model confirmation
Send your PV system voltage, installation position and quantity. LEEYEE will review the suitable model and available technical documents for your project.
- Confirm Ucpv, Type and pole configuration
- Request model-specific datasheet and document review
- Discuss distributor, combiner-box, EPC or OEM supply
PV SPD requirement
Required fields are kept short. Company, country and technical details remain optional.