China
DQC-12 metal-enclosed GIS is the latest generation of products based on the most advanced international solid insulation technology, gas insulation technology, vacuum breaking technology, modular plug-in technology, combined with laser welding technology and helium leak detection technology. The product has characteristics such as high reliability, maintenance free, and miniaturization. It is widely used in small electrical substation, switching stations, cubicle-type substations, residential quarters, industrial and mining enterprises, large shopping malls and other places. It fully meets the technical requirements for switchgear in power grids, subways, and other usage scenarios. The product has passed the full set of type tests conducted by the National High Voltage Electrical Equipment Quality Supervision and Inspection Center.
Product advantages
1. Compact structure and small footprint
2. High voltage live parts are gas insulated and not affected by the environment
3. Sustainable optimization and improvement of equipment, with high operational reliability
4. Maintenance free
Product features
1. Adopting an interface insulation structure to achieve the insertion of high-voltage components and the expansion of the cabinet body
2. Effective interlocking is adopted between the circuit breaker and the isolating switch to prevent misoperation
3. High-voltage components form several standard modules, using plug-in connections for convenient application
4. Solid insulated busbar connection is used between the cabinets, and gas operation is not involved when assembling the switchgear
5. High reliability thanks to laser welding and helium leak detection technology
Technical parameter name | Unit | Parameter |
Rated voltage | kV | 12 |
Rated current | A | ...3150 |
Rated power frequency withstand voltage(1min) | kV | 42/48 |
Rated lightning impulse withstand voltage | kV | 95/110 |
Rated frequency | Hz | 50 |
Rated short-time withstand current (4s) | kA | ...40 |
Rated peak withstand current | kA | ...100 |
IP code | IP67/IP42 | |
Rated working pressure (20 ℃ gauge pressure) | MPa | |
Minimum working pressure (20 ℃ gauge pressure) | ||
Insulating gas | SF6 | |
Overall dimensions [width * depth * height] | mm | 600（800）*（1400-1820）*2400 |
