Wenzhou Shuowei Electric Co., Ltd. is one of the most reliable manufacturers and suppliers of solid type switchgear – sf6-free, 12kv-40.5kv for distribution networks in China, also supports customized service. Welcome to wholesale bulk advanced solid type switchgear – sf6-free, 12kv-40.5kv for distribution networks in stock here from our factory. If you have any enquiry about quotation, please feel free to email us.
Solid Type Switchgear – SF6-Free, 12kV-40.5kV for Distribution Networks
The Solid Type Switchgear is an SF6-free medium voltage switchgear that uses solid epoxy insulation instead of SF6 gas or air. Designed for 12kV to 40.5kV distribution networks, it offers a more environmentally friendly and maintenance-free alternative to traditional gas-insulated switchgear (GIS).
Rated up to 630A / 1250A with short-circuit withstand capacity of 25kA/3s. The solid insulation technology eliminates gas leakage risks, reduces greenhouse gas emissions, and ensures stable operation in extreme environments from -40°C to +50°C.
| Parameter | Value / Range |
|---|---|
| Rated Voltage | 12kV / 24kV / 40.5kV |
| Rated Current | 630A / 1250A |
| Short-time withstand | 20kA/3s – 25kA/3s |
| Insulation Medium | Solid epoxy (SF6-free) |
| Configuration | RMU / Feeder panel / Ring main unit |
| Functions | Load break, fault make, protection |
| Enclosure Rating | IP4X (standard), IP67 (submersible) |
| Operating Temp | -40°C to +50°C |
| Mechanical Endurance | 10,000 operations |
| Compliance | IEC 62271-201, GB/T 3906, DL/T 1586 |
| Automation | Optional: SCADA, RTU, communication ports |
Q: What is solid type switchgear?
A: It uses solid epoxy resin as the primary insulation instead of SF6 gas or air. All live parts are embedded in or coated with solid insulation.
Q: Why choose solid insulated switchgear over SF6 GIS?
A: No SF6 gas means no leakage, no gas monitoring, no environmental taxes, and better performance in extreme cold (SF6 liquefies below -25°C).
Q: Is solid type switchgear more expensive than SF6 GIS?
A: Initially similar or slightly higher, but lower lifecycle cost due to zero gas maintenance and no SF6 replacement/penalty fees.
Q: What is the operating temperature range?
A: -40°C to +50°C.
Q: Does it comply with international standards?
A: Yes. IEC 62271-201
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