12kv Intelligent Sf6 Gas Insulated Switchgear Ring Main Unit
The GIR-12 type intelligent switchgear is manufactured by our company with independent intellectual property rights, which is based on the development demands of smart grid and adopts the design concept of being "intelligent, energy-saving, environmentally-friendly and maintenance-free". It integrates such functions as measurement, control, protection and communication etc, with high intelligent degree. This product is suitable for 50Hz, 12kV electric power systems, extensively applied to industrial and civil cable ring networks and power supply terminal projects; it is a top choice to guarantee safe, reliable, economical and efficient operation of the power network.
This product conforms to IEC60044-1, IEC60060, IEC60068-2, IEC60099-4, IEC60255-27, IEC60270, IEC60280.1, IEC60529, IEC60694, IEC60815-1, IEC60870-5-101, IEC61000-4, IEC61243-5, IEC62271 standards, etc.
Major Technical Parameters are shown below:
The GIR-12 type intelligent switchgear is manufactured by our company with independent intellectual property rights, which is based on the development demands of smart grid and adopts the design concept of being "intelligent, energy-saving, environmentally-friendly and maintenance-free". It integrates such functions as measurement, control, protection and communication etc, with high intelligent degree. This product is suitable for 50Hz, 12kV electric power systems, extensively applied to industrial and civil cable ring networks and power supply terminal projects; it is a top choice to guarantee safe, reliable, economical and efficient operation of the power network.
This product conforms to IEC60044-1, IEC60060, IEC60068-2, IEC60099-4, IEC60255-27, IEC60270, IEC60280.1, IEC60529, IEC60694, IEC60815-1, IEC60870-5-101, IEC61000-4, IEC61243-5, IEC62271 standards, etc.
Major Technical Parameters are shown below:
| Rated voltage | 12kV |
| Rated current | 630A |
| Rated frequency | 50Hz |
| Rated short-duration (1 min) power frequency withstand voltage | 42/48kV |
| Rated short-circuit breaking current | 20kA |
| Rated short-duration withstand current (4s) | 20kA |
| Rated lightning impluse withstand voltage(to earth/break) | 75/85kV |
| Rated short-circuit making current (peak value) | 50/63kA |
| Rated peak withstand current | 50kA |
| Rated load breaking current | 630A |
| Mechanical service life of vacuum circuit breaker | 10000Times |
| Rated close circle breaking current | 630A |
| 5% rated load open current | 31.5A |
| Rated transfer current | 1700A |