Over 300 GW of solar capacity installed annually, each MW requiring MV switchgear for protection and grid connection.
Solar Farm Architecture
| Level | Voltage | Switchgear | Function |
|---|---|---|---|
| Inverter | 400-800V | LV switchgear | Inverter protection |
| Collector | 10-36kV | RMU / metal-enclosed | Aggregation |
| Grid POC | 33-220kV | Metal-clad / GIS | Utility connection |
Collector Level
SF6 RMUs — compact, maintenance-free, outdoor-rated. For larger substations, metal-enclosed panels with SCADA.
Grid Interconnection
- Breaking capacity matching PCC fault level (25-40kA for 33kV)
- Anti-islanding: disconnect within 2 seconds
- Revenue metering CTs/PTs
- SCADA remote operation
NAIJI GIS suits desert solar farms with sand, dust, and extreme temperatures.
Battery Storage (BESS)
Vacuum contactors (100,000+ ops) match daily cycling requirements.
Environment
Rate for -25 to +55 degrees C, high altitude, IP65+ outdoor. Our outdoor VCBs handle these conditions. See SF6-free alternatives.
Request solar farm switchgear quotation — send capacity (MW) and single-line diagram.