Vacuum Circuit Breaker (ZW7-40.5 Series)

Detailed Product Description

Vacuum Circuit Breaker (ZW7-40.5 Series)

General

ZW7-40.5 outdoor high voltage electrical equipments on three phase AC 50Hz. It is used for controlling and protecting 24-40.5kv transmission and distribution systems . it can also be used for network interconnecting breaker and switching capacitor bank . matching with segmentation controllers and automatic circuit reclosers, the product realizes intellectulized segmentation and reclose control of power systems . annexing a current transformeer inside , it provides measurement and protection . matching with spring or electromagnetism operating mechanisems , the breaker has high reliability of mechanical property and can be operated frequently . it has no burning and explosion hazard . the breaker conforms to standards of GB1984-1989 AC HV breaker and IEC62271-100 HV AC breaker. The breakers main features: excellent break performance , long mechanical life up to 10000 times , simple structure , non maintenance , excellent insulating property and strong anti soil performance . According to customers requests , it can install current transformers inside . the measuring accuracy will be level of 0.2 . And it realizes three phase interaction protection .

Main Technical Parameter

Item			Unit	Parameter
Rated voltage(kA)			kV	15	24	36	40.5
Rated current(A)			A	1000	1250	1600	2000
Rated short-circuit close current			KA	16	20	25	31.5
Rated shorcircuit close current (peak value)			kV	50	63	80
Rated peak value withstand current			kV	50	63	80
4S Rated short time withstand current			kV	20	25	31.5
Rated insulation lever	Power frequency withstand voltage		kV	50	60	70	95
	Lightning impulse withstand voltage		kv	110	150	170	185
Rated operation order				O-0.3S-CO-180S-CO
Mechanical life-span			times	10000
Rated short-circuit current break and close times			times	12
Touch the head and shut a floodgate of time of bouncing			ms	≤2
Average speed of breaking brake			ms	1.5±0.2	1.5±0.2	1.5±0.2	1.5±0.2
Average speed of closing brake			ms	0.7±0.2	0.7±0.2	0.7±0.2	0.7±0.2
Time of breaking			ms	≤70	≤70	≤70	≤60
Time of closing brake			ms	≤145	≤145	≤150	≤150
Each the resistance of main return circuit			μΩ	≤100
Allowance abrasion cumulated thickness of the moving and stationary contact			mm	3
Weight			kg	400	600	750	800