MV Switchgear
MV Switchgear
As a professional MV switchgear manufacturer, Juhonkia offers a broad portfolio of GIS: SF6, SF6‑free, metal‑enclosed models, all built to high safety & environmental standards. OEM/ODM customization available worldwide.
| Product Model | Product Type | Core Parameters | Application |
|---|---|---|---|
| JSR6-72.5kV | SF6 Gas-Insulated Switchgear | 1250A rated current, 31.5kA breaking current | High-voltage power grids, large industrial parks |
| GSR6-27.5kV | SF6-Free Gas-Insulated Switchgear (C-GIS) | Eco-friendly (no SF6), compact design | Urban power distribution, green energy projects |
| GSR6-12/24/40.5kV | Environmental Gas-Insulated Switchgear (C-GIS) | Multiple voltage options, low maintenance | Commercial buildings, new energy stations (solar/wind) |
| JSR6-12/24/40.5kV | SF6 Gas-Insulated Switchgear (C-GIS) | High reliability, long service life | Subway power supply, industrial heavy load scenarios |
MV (Medium Voltage) switchgear is a crucial electrical assembly of circuit breakers, switches, and fuses in metal enclosures, used to protect, control, and distribute power in systems from 1kV to 75kV for large facilities like hospitals, data centers, and industries. Key types include Air-Insulated (AIS) for cost-effectiveness and Gas-Insulated (GIS) for compactness, while modern designs incorporate digital controls, vacuum breakers, and solid insulation (SSIS) for enhanced safety, reliability, and smaller footprints, meeting standards like IEEE and IEC.
Control: Start/stop motors, manage power flow.
Protection: Isolate faults (overcurrent, short circuits) to prevent damage.
Distribution: Route power to different sections of a facility.
Components: Breakers, switches, fuses, busbars, sensors.
Air-Insulated Switchgear (AIS): Uses air as the primary insulator, common in industrial settings.
Gas-Insulated Switchgear (GIS): Uses SF6 gas for superior dielectric strength, allowing for much smaller, compact designs, ideal for tight spaces.
Solid Insulation (SSIS): Encapsulates live parts with solid insulation, reducing risk and maintenance, common in SF6-free designs.
Busbar: Single (simple, less reliable) or Double (more reliable, higher cost).
Enclosure: Indoor (NEMA 1) or Outdoor (NEMA 3R) for weather resistance.
Digital: Advanced sensors and protection for simplified, safer operation.
Power Generation & Distribution
Data Centers
Hospitals & Institutions
Industrial Facilities (Factories, Mines)
IEEE C37 Series: North American standards.
IEC 62271: International standards.
"There is always a ring main unit suitable for you!" Juhonkia continues to introduce new products in the field of ring main units. The ring main unit series products achieve full coverage of voltage levels and different insulation media products. It is the first domestic enterprise to simultaneously complete the R&D, manufacturing, network access testing and batch supply of standardized and customized SF6 gas insulation, solid insulation, environmentally friendly gas insulation, atmospheric air insulated ring main switchgear primary and secondary integrated ring main switchgear.
Hangzhou Metro
Wind power
