Wet Leakage Current Test System
Application
The system is suitable for electrical safety and insulation performance testing of photovoltaic modules in simulated wet environments, including:
Electrical insulation testing of crystalline silicon PV modules (monocrystalline and polycrystalline)
Wet leakage current evaluation of thin-film PV modules (CIGS, CdTe, a-Si, etc.)
Design qualification and type testing of photovoltaic modules
Routine quality control testing during PV module production
Reliability and safety performance verification of PV modules
Type approval testing in third-party testing institutes and certification laboratories
Insulation structure evaluation during PV module R&D
Photovoltaic safety performance research in universities and research institutions
Standards
The Wet Leakage Current Test System is designed to meet the requirements of the following standards:
(1) GB/T 9535 – Crystalline Silicon Terrestrial Photovoltaic (PV) Modules – Design Qualification and Type Approval
(2) GB/T 20047 – Photovoltaic (PV) Module Safety Qualification Requirements
(3) IEC 61215 – Terrestrial Photovoltaic (PV) Modules – Design Qualification and Type Approval
(4) IEC 61730 – Photovoltaic (PV) Module Safety Qualification (relevant clauses on insulation and electrical safety)
Parameters
| Item | Technical Specification |
|---|---|
| Test Tank Dimensions | 2100 × 1000 × 250 mm (W × D × H) |
| Tank Material | Acrylic (Organic Glass) |
| Tank Thickness | 15 mm |
| Water Temperature Control Range | 22 ± 3 ℃ |
| Temperature Control Method | Self-developed water constant-temperature system |
| Test Liquid Resistivity | ≤ 3500 Ω·cm |
| Spray Method | Multi-angle adjustable spray |
| Spray Nozzle Type | UL laboratory dedicated spray nozzles |
| Spray Water Pressure / Flow | Adjustable |
| Maximum Test Voltage | 0–5000 V (adjustable) |
| Leakage Current Limit | 5 mA |
| Voltage Ramp Rate | 500 V/s |
| Insulation Resistance Range | 1 MΩ – 9999 MΩ |
| Leakage Current Measurement Range | 0.001 – 5.000 mA (DC) |
Features
Fully compliant with wet leakage current test requirements specified in IEC 61215
Constant-temperature water tank ensures stable water temperature and high test repeatability
Controlled water resistivity guarantees consistency and comparability of test conditions
Multi-directional spray structure realistically simulates rain, condensation, and wet exposure
High-precision hipot tester provides accurate leakage current and insulation resistance measurements
High system integration, suitable for both type testing and batch inspection of PV modules
Robust structural design supports long-term and continuous laboratory operation
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