12kV Fixed type Embedded Vacuum Circuit Breaker

GPVN-12E vacuum circuit breaker is an indoor device with three-phase AC 50Hz and rated voltage of 12kV, which can be used for control and protection of electrical facilities in industrial and mining enterprises, power plants and substations. This product complies with the relevant provisions of the standards GB1984-2003 High Voltage AC Circuit Breaker, JB3855 Indoor High Voltage AC Vacuum Circuit Breaker, DL403 Technical Conditions for Ordering 10~35kV Indoor High Voltage Vacuum Circuit Breaker and IEC62271-100:2001 High Voltage AC Circuit Breaker.

GPVN-12E series indoor high-voltage vacuum circuit breakers can be installed in both truck mounted switchgear and fixed switchgear. The circuit breaker has the advantages of long service life, simple maintenance, no pollution, no explosion hazard, low noise, etc., and is suitable for frequent operation and other harsh working conditions.

GPVN-12E series indoor high-voltage vacuum circuit breakers place the arc extinguishing chamber and the operating mechanism on a special-shaped frame, that is, an integrated layout. This structural design can make the operating performance of the operating mechanism more consistent with the performance required for the opening and closing of the arc extinguishing chamber, reduce unnecessary intermediate transmission links, reduce energy consumption and noise, and make the operating performance of the circuit breaker more reliable. Users can directly put the circuit breaker into operation without adjustment. GPVN-12E indoor high-voltage vacuum circuit breaker can be installed in both truck mounted switchgear and fixed switchgear.

The main circuit of the circuit breaker adopts the structure that the vacuum arc extinguishing chamber is encapsulated in the insulating pole. The vacuum arc extinguishing chamber is longitudinally sealed in a tubular insulating cylinder, which is cast by epoxy resin using APG process. This structural design can not only prevent the vacuum interrupter from being damaged by external factors, but also ensure that even in the hot and humid and seriously polluted environment, it can also present a high resistance state to the voltage effect.

The operating mechanism is an independent spring energy storage type with manual and electric energy storage functions. The operating mechanism is placed in the cabinet in front of the arc extinguishing chamber, which is of a plywood structure.

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