MV C-GIS SF6 Medium Voltage Gas Insulated Switchgear
12kV ~ 36kV 2500A 31.5kA GIS Compact Switchgear for transformer substations, industrial plants, and infrastructure applications.
Product Overview
This gas insulated switchgear meets stringent requirements for safety in operation, staff safety, operational reliability, smaller footprints, and reduced maintenance. Designed in compliance with IEC 62271-200 standards with primary components meeting relevant international standards. Accommodates high-performance vacuum circuit breakers (VCB) tested to IEC 62271-100. Suitable for single and double busbar systems for indoor installation.
Key Features
- Developed using advanced technology from Toshiba Co., Ltd.
- Excellent insulation performance with compact size using SF6 gas as insulation medium
- Reliable breaking performance with vacuum circuit breaker for arc extinction and long-life spring operating mechanism
- High reliability with sealed body design unaffected by external conditions
- Safe structure design with independent pressure release devices for internal failure protection
- Reliable "five-prevention" equipment with mechanical and electrical interlock
- Easy installation with external solid insulated busbar connections
- Spacious cable room for convenient installation
36kV / 40.5kV Specifications
| Item | Unit | Technical Parameter |
| Rated voltage | kV | 36 | 40.5 |
| Rated insulation level | - | 1 min power frequency withstand voltage: 70-95kV |
| Lightning impulse withstand voltage | - | 170-185kV |
| Rated current | A | 630, 1250, 2000, 2500 |
| 4s rated short time withstand current | kA | 25, 31.5 |
| Rated peak withstand current | kA | 63, 80 |
| Rated working pressure | MPa | 0.05 |
| Annual leakage rate | % | <0.5% |
| Protection degree | - | Sealed gas chamber IP65, control room IP4X |
| Dimensions (L×W×H) | mm | 600(min)×1700×2450 |
12kV Class Specifications
| Item | Unit | Data |
| Rated voltage | kV | 12 |
| Rated current | A | 630, 1250, 2000, 2500 |
| Rated frequency | Hz | 50/60 |
| Rated power frequency withstand voltage | kV | 45 (phase to phase/earth), 48 (between clearance) |
| Rated lightning impulse withstand voltage | kV | 75 (phase to phase/earth), 85 (between clearance) |
| Power frequency withstand voltage of auxiliary control circuit | V | 2000 |
| Rated short-circuit breaking current | kA | 20, 25, 31.5 |
| Rated short-circuit making current | kA | 63, 80, 100 |
| Rated short time withstand current | kA/s | 25/4, 31.5/4, 40/4 |
| Rated peak withstand current | kA | 63, 80, 100 |
| Degree of protection | - | Gas-filled compartment: IP67, LV compartment: IP4X |
| Main circuit resistance | μΩ | <250 |
| Rated SF6 gas pressure (20°C) | MPa | 0.045 |
| Min SF6 gas pressure (20°C) | MPa | 0.03 |
| Annual SF6 gas loss rate | % | <1 |
| Rated voltage of auxiliary control circuit | V | DC 110/220, AC 220 |
| Dimensions (W×D×H) | mm | 500×1000×1850 |