Zw8-12 Outdoor High Voltage Vacuum Circuit Breaker

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Quick Details

Product Name:

Zw8-12 Outdoor High Voltage Vacuum Circuit Breaker

Model NO.:

zw8-12

Certification:

ISO9001-2000

Function:

Conventional Circuit Breaker, Circuit-Breaker Failure Protection

Type:

Circuit Breaker

Poles Number:

Structure:

ACB

Installation:

Fixed

Arc-extinguishing Medium:

Vacuum

Speed:

Normal Type Circuit Breaker

Operation:

Manual Type

Breaking Capacity:

High Voltage Circuit Breakers

Transport Package:

Wooden Packing

Origin:

China

Product Details

ZW8-12 Outdoor high voltage vacuum circuit breaker for three-phase AC rated volatge 12kV,50Hz outdoor high voltage switch equipment,maily used for breaking off farming net,city net and small power system load current,overload current,short circuit ciurrent.The product structure for three-phase commom box type,three-phase vacuum arc extinguish chamber is arranged in the metal box,the use of SMCinsulation material and insulation and insulation to ground,reliable performance,high insulation strength.

SI	Name		unit	parameter
				6.3kA	12.5kA	20kA
1	Rated voltage		kV	12
2	Rated current		A	630
3	Rated short-circuit load breaking current		kA	6.3	12.5	20
4	Rated short circuit closing current (peak)		kA	16	31.5	50
5	Rated peak withstand current		kA	16	31.5	50
6	Rated short-time 1min withstand current		kA	63	12.5	20
7	Rated insulation level	Power frequency withstand voltage (dry type)	kV		42
		Lightning impulse withstand voltage (peak)		75
8	Rated operation sequence			Separate -0.3S-combination-180 S-combination
9	Mechanical life		times	10000
10	Rated short-circuit breaking current breaking times		times	30
11	Operating mechanism rated closing voltage		V	110,220
12	Operating mechanism rated trip current		A	110,220
13	Contact opening distance		mm	11±1
14	Overtravel (contact spring compression length)		mm	3_-0.3^+1.0
15	Three-phase separation and closing		ms	≤2
16	Contact closing bounce time		ms	≤2
17	Average opening speed		m/s	1.0±0.2
18	Average closing speed		m/s	0.7±0.15
19	Opening time	At the highest operating voltage	s	0.015-0.05
		At the lowest operating voltage		0.03-0.06
20	Opening time		s	0.025-0.05
21	Main loop resistance of each phase		μΩ	≤120
22	Dynamic and static contacts allow friction to accumulate thickness		mm	3

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