GN30-12 type isolating switch is a rotating contact knife indoor high-voltage switchgear suitable for power systems with AC 50Hz and rated voltage of 12kV. It is mainly used for opening and closing circuits under no-load conditions to achieve electrical isolation. Its compact design is suitable for installation in high-voltage switchgear, improving the space utilization of the distribution system
Support manual operation, control the blade movement by rotating the handle
GN30-12 type isolating switch is widely used in electrical isolation scenarios of indoor power systems due to its compact structure and reliable performance. The selection should be based on the current level, installation environment, and functional requirements.
| Type | GN30-12/400-12.5 | GN30-12/630-20 | GN30-12/1000-31.5 | GN30-12/1250-31.5 | GN30-12/1600-3150 |
| GN30-12D/400-12.5 | GN30-12D/630-20 | GN30-12D/1000-31.5 | GN30-12D/1250-31.5 | GN30-12D/1600-3150 | |
| Rated voltage | 12KV | ||||
| Rated current | 400A | 630A | 1000A | 1250A | 1600-3150A |
| Rated short circuite current(4S) | 12.5KA | 20KA | 31.5KA | 40KA | |
| Rated current peak | 31.5KA | 50KA | 80KA | 1000KA | |
| (S)GN30-12 1 min rated power frequency voltage | Phase to phase,to earth 42kV,Across the isolating 49kV | ||||
| (S)GN30-12D 1 min rated power frequency voltage | Phase to phase,to earth 75KV,Across the isolating 85KV | ||||
Provide visible breakpoints to ensure safe maintenance isolation.
Small capacity circuits such as charging current and voltage transformers for dividing and combining busbars.
Integrated in indoor substations, distribution rooms, and high-voltage switchgear.
Places without severe vibration, chemical corrosion, and explosion risks
Operation with load is strictly prohibited: opening and closing must be performed after the circuit breaker is completely disconnected.
Maintenance requirements: Regularly check the contact status of the contacts, the cleanliness of the insulators, and the flexibility of the mechanism.
