Product Details

SPECIFICATION

ZW7-40.5 series outdoor high voltage vacuum circuit-breaker is for three phase, rated voltage 40.5kv, AC 50HZ power system, mainly used for breaking and closing load current, over current and short-current

MAIN FUNCTION

1.Using vacuum arcing, high breaking ability, long electrical endurance, mechanical life 10000times.

2.Simple construction maintenance-free.No maintenance cycle is long.

3.Good insulation performance, good prevent filth ability.

4.Can match the spring or electromagnetic operating mechanism, mechanically sound, can be frequent operation.No fire and explosion risks.

5. Built-in current transformer,accuracy of 0.2, can be realized three mutual protection

6. Built-in condensation controller, circuit breakers can be maintained at a certain temperature reliably.

AMBIENT CONDITION

1.Ambient air temperature: upper limit of +40℃,lower limit of -30℃

2. Wind speed: no more than 34m/s

3.Altitude:No more than altitude of 2000 meters

4.Air pollution levels: no more than Ⅲ

5.Maximum Temperature difference: not more than 25℃

MODEL IMPLICATION

TECHNICAL SPECIFICATION

NO.	Item			Units	Parameters
1	Rated voltage			KV	40.5
2	Rated insulation level	1 min power requency withstand voltage	dry		95
3			wet		80
4		Lightning impulse withstand voltage			185
5	Rated current			A	1250,1600,2000
6	Rated short-circuit breaking current			KA	20,25,31.5
7	Rated operating sequence				0-0,3s-CO-180s-CO
8	Rated short-circuit breaking current breaking times			Times	12
9	Rated short-circuit closed current			KA	50.63.80
	Rated peak withstand current
10	Rated short-time withstand current			KA	20,25,31.5
	Rated short-circuit duration			s	4
11	Average opening speed			m/s	1.5±0.2
12	Average closing speed				0.7±0.2
13	Contact closing bounce duration			s	≤2
14	Three phase closing and opening synchronism				≤2
15	Opening time				≤150
16	Closing time				≤60
17	Mechanism life			times	10000
18	Rated operating voltage and auxiliary loop rated voltage			v	DC220.110.24
					AC220.110.24
19	Phase loop DC resistance			u	≤100
20	Permitted accumulate wear-thickness of dynamic and static contact			mm	3
21	Weight			kg	800

OVERALL DIMENSION