Manufacturer Electrical Vacuum Circuit Breaker Auto Recloser Cradle Type Vcb 1250A 630A Column Isolating Switch

• Customization: Available
• Breaking Capacity: High Voltage Circuit Breakers
• Operation: Electric Type
• Model NO.: ZW20-12
• Arc-extinguishing Medium: Vacuum
• Installation: Fixed
• Structure: Vcb
• Poles Number: 3
• Type: Circuit Breaker
• Function: Conventional Circuit Breaker, Circuit-Breaker Failure Protection, Overcurrent Protection, OVP(Overvoltage Protection)
• Certification: ISO9001-2000
• Rated Voltage: 12kv
• Installation Method: Withdrawable
• Rated Current: 630A
• Phase Distance: 150mm/210mm
• Rated Frequency: 50/60Hz
• Customize: Yes
• Model No.: Zw20-12
• Brand Name: Shengsu
• Size: Medium
• Maximum Working Voltage: 630ka
• Mechanical Life: 10000times
• Anti-Pollution Grade: Class III
• Wind Speed: ≤34m/S
• Ambient Temperature: -30-40
• Altitude: ≤2000m
• Transport Package: Wooden Case
• Specification: pcs
• Trademark: SHENGSU ELECTRIC CO., LTD
• Origin: China
• Package Size: 120.00cm * 80.00cm * 85.00cm
• Package Gross Weight: 180.000kg

Product Description

Place of Origin	Zhejiang, China
Brand Name	Shengsu
Model Number	ZW20-12F
Maximum working voltage	630KA
Rated short close current	50KA
Type	Vacuum
Poles Number	3
Altitude	<1000m
Ambient temperature	-40C-+40C
Product name	Vacuum Circuit Breaker
Rated Current	630A -1250A
Voltage	12KV
Rated Voltage	12KV

  
ZW20-12 vacuum circuit breaker (below) is an outdoor high-voltage distribution equipment with a rated voltage of 12KV and three-phase AC 50Hz. ZW20-12 is mainly used for breaking and closing load current, overload current, and short circuit current in power systems of transmission and transformation lines. Suitable for protection and control in substations and distribution systems of industrial and mining enterprises, and more suitable for urban and rural power grid construction, renovation, and frequent operation places.
 

Product Parameters

  

Serial number	Order	Unit	Numerical value
1	Rated electric jade	kv	12
2	Rated rate	HZ	50
3	Rated current	A	630
4	Rated short-circuit breaking current	KA	20
5	Rated current	KA	50
6	Rated short time withstand current (4S)	KA	20
7	Rated short-circuit making current (peak value)	KA	50
8	Institutional lifespan	Times	10000
9	Rated current breaking times	Times	10000
10	Rated short-circuit breaking current breaking times	Times	30
11	1min Gongnaiyu (wet)	KV	34
12	(Dry) Interphase, ground to ground/fracture	KV	42/48
13	Lightning impulse withstand current (peak value) Interphase, ground to ground/new interface	KV	75/85
14	Secondary circuit 1min Gongnaiyu	KV	2
mechanical properties
1	Contact distance	mm	8-10
2	Overtravel	mm	2-3
3	Fractional velocity	ms	1.0-1.4
4	Convergence speed	ms	0.6-0.8
5	Jump time between contacts	ms	≤ 2
6	Center distance between phases	mm	338-342
7	Different phases between three-phase opening and closing	ms	≤ 2
8	Resistance of each phase electrical circuit		<80
9	Resistance of each phase electrical circuit with isolation switch		<150
10	one hundred and fifty	ms	30-60
11	Split time (shunt trip)	ms	20-40
12	Rated power of energy storage machine	w	40

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