ISO9001-2000 Zw20 12kV Mingde Outdoor Vacuum Circuit Breaker

Rated Power of The Motor: 40W Circuit Breaker; Trademark: Mingde Circuit Breaker; Specification: CE, ISO9001 Circuit Breaker; HS Code: 8535210000;

Description

Main technical data of the circuit breaker ZW20

No.	Item		Unit	Numerical value
1	Rated voltage		kV	12
2	Rated current		A	630
3	Rated frequency		Hz	50
4	Rated short-circuit breaking current		kA	20
5	Rated peak withstand current		kA	50
6	Rated short-time withstand current		kA/S	20/4
7	Rated short-circuit making current (peak value)		kA	50
8	Rated operating sequence			O-0.3S-CO-180s-CO
9	Mechanical life		times	10000
10	Rated short-circuit breaking times		times	30
11	1 min frequency withstand	(wet) between poles, to earth/ between open contacts	kV	34
11	1 min frequency withstand	(dry) (wet) between poles, to earth/ between open contacts	kV	42
12	Rated lightning impulse withstand current (peak value) between poles, to earth/between open contacts		kV	85
13	Power frequency withstand voltage of secondary circuit (1 min)		V	2000
14	SF6 gas pressure		Mpa	0

Main technical features of the circuit breaker ZW20

No.	Item	Unit	Numerical value
1	Clearance	mm	9±1
2	Travel	mm	3~4
3	Opening speed	m/s	1.2±0.2
4	Closing speed	m/s	0.6±0.2
5	Bounce time(contacts closing)	m/s	≤2
6	Pole center distance	mm	135(inside)/280(outside)
7	Three pole opening/closing non-synchronism	ms	≤2
8	Each pole's conductance circuit resistance	μΩ	≤150
9	Closing time	ms	25~60
10	Opening time	ms	20~50
11	Rated power of the motor	W	40