1. The core role of connectors in photovoltaic systems
In solar photovoltaic power generation systems, outdoor waterproof connectors are key nodes for power transmission between components, and are responsible for:
Efficient power transmission: DC power collection of series/parallel photovoltaic components
Environmental protection: Resistant to harsh outdoor conditions such as ultraviolet rays, rain, sand and dust
Safety protection: Prevent electrical faults such as arcs and short circuits
Typical application links:
✔ String connection between photovoltaic panels
✔ DC input interface of inverter
✔ High-voltage interconnection of energy storage battery system
2. Key technical requirements for photovoltaic waterproof connectors
High protection level
IP68/IP69K: Completely dustproof and can withstand high-pressure water gun washing
UV anti-aging: The shell material has passed the 3000-hour UV aging test (IEC 62788)
Electrical performance
Parameter Standard value Test conditions
Rated voltage 1500V DC IEC 62852
Rated current 30A~50A Ambient temperature 70℃
Contact resistance <0.5mΩ 100A DC load
Safety design
Anti-electric shock structure: Prioritize current disconnection when plugging and unplugging (IEC 60364-7-712)
Fireproof material: Shell flame retardant grade UL94 V-0
Fool-proof plugging: Polarity identification and mechanical key position to prevent mis-plugging
Application case:
A 300MW desert photovoltaic power station uses IP68-level MC4-EVO2 connectors and has been operating for 3 years without failure in a sandstorm environment, with a system efficiency loss of <0.5%/year.
If you need to obtain IV curve test data or TUV certification documents for specific products, please feel free to contact the technical team.