HV outdoor AC Vacuum Circuit Breaker 40.5kv

outdoor high-voltage alternating-current vacuum circuit breaker is a new outdoor high-voltage alternating-current switchgear of our vacuum circuit breaker series. Its rated voltage is 40.5kV. It applies to places with such voltage level, including overhead lines, industria' and mining enterprises, power stations, substations, etc. Under its normal operating conditions and specified technical parameters, it can satist,. the system protection requirements of the grid. It is characterized by automatic re-making, stable operation and long electric life.

General:

Equipped with external current transformer, equipped with spring operating mechanism, or permanent magnet mechanism, or spring operating mechanism with permanent magnet double mechanism,zw32 series 40.5kv outdoor vacuum circuit breaker is used for AC 50hz three-phase power system, as division and combination of load current, overload current and short circuit current. It can be used for the control and protection of power plants, substations, electrical equipment and power lines, and can also be used in frequently operated places, she is not only used for the construction of new substations

Service Environment

Ambient temperature:-40℃~+40℃
Altitude:≤2000m
Relative humidity:≤95% (daily average) or ≤90% (monthly average)
Wind speed:≤34m/s (equivalent to a pressure of 700pa on a cylindrical surface)
Pollution grade:≤IV
Key Feature
The circuit breaker adopts a permanent magnet operating mechanism
Permanent magnet mechanism is divided into electric and manual
Vacuum interrupter for circuit breaker

Technical Data

Item		Unit	Reference value
Rated voltage		kV	40.5
Rated insulation level	Lightning impulse withstand voltage	kV	185
	1min power-frequency withstand voltage	kV	95
Rated frequency		Hz	50/60
Rated current		A	630/1250/1600/2000/2500
Rated short-circuit breaking current		kA	20/25/31.5
Rated short-circuic making current (peak value)		kA	50/63/80
Rated short-time withstand current		kA	20/25/31.5
Rated withstand current (peak value)		kA	50/63/80
Rated operation sequence			O-0.3s-C0-180s-CO
Rated short-circuit duration		s	4
Times of making-breaking with the rated short-circuit current		times	30
Mechanical life			M2 level
Weight		kg	280