12kV Outdoor High Voltage Vacuum Circuit Breaker on Pole (ZW8)

Model NO.: ZW8-12(G)
Delivery: FOB
Minimum order quantity: 1 piece

Quantity:

Product Description

Basic Info.

Model NO.	ZW8-12 (G)
Poles Number	3
Type	Circuit Breaker
Function	Conventional Circuit Breaker
Certification	ISO9001-2000, CE, CCC
Mechanical Life Time	10,000times
Contact Opening Distance	10-12mm
Over Travel	2.7-3.3mm
Weight	152(with G 180)Kg
Phases Center Distance	173.5-176.5mm
Trademark	VACEM
Origin	Wenzhou, China

1.General description

ZW8-12 series vacuum circuit breaker is a H.V. outdoor switch with rated voltage 12kV, tri-phase AC 50Hz, which is mainly used for making and breaking load current, over-current, short-circuit current of rural network, urban network and miniature power system. The overall structure of this product is tri-phase co-box type, tri-phase vacuum explosion chamber in the metal box, the performance is reliable, and the insulation level is strong by making use of SMC insulation material phase to phase insulation and to earth.

ZW8-12G consists of ZW8-12 circuit breaker and isolation blade, called combined circuit breaker, use for breaking switch. The operating device of this series product is VCT23 spring loaded operation mechanism, divided into two kinds of motor operation and manual operation.

It has the function of surge control, can meet the demands of control and measurement.

This breaker matches with electronic control unit to realize Four Remote monitor.

2.Main technical parameter

Item	Unit	ZW8-12(G)/630-6.3kA	ZW8-12(G)/630-12.5kA	ZW8-12(G)/630-20kA
Rated voltage	kV	12
Rated current	A	630
Rated short circuit breaking current	kA	6.3	12.5	20
Rated short circuit making current (peak)	kA	16	31.5	50
Rated peak value withstand current	kA	16	31.5	50
Rated short time withstand current	kA	6.3	12.5	20
Rated insulation level 1min P.F. withstand voltage	kV	42
Rated insulation level lightning impulse withstand voltage(peak)	kV	75
Rated operation sequence		O-0.3s-CO-180s-CO
Mechanical life time	time	10000
Rated short-circuit current breaking times	time	30
Rated closing voltage of operation mechanism	V	110,220
Rated opening voltage of operation mechanism	V	110,220
Contact opening distance	mm	11±1
Over travel (spring compressed length)	mm	3±0.3
Tri-phase O/C asynchronous	ms	≤2
Contact closing bounce time	ms	≤2
Average opening speed	m/s	1.0±0.2
Average closing speed	m/s	0.7±0.15
Opening time under max operation voltage	ms	15-50
Opening time under min operation voltage	ms	30-60
Closing time	ms	25-50
Each phase main circuit resistance	μΩ	≤120(with G≤200)
Allowable attrition thickness of moving and fixed contacts	mm	3
Weight	kg	152(with G 180)
Phases center distance	mm	175±1.5