Outdoor High-Voltage AC Vacuum Circuit Breakers with Isolating Switch

• Customization: Available
• Breaking Capacity: High Voltage Circuit Breakers
• Operation: Electric Type
• Model NO.: ZW8-12
• Speed: Normal Type Circuit Breaker
• 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/1250A
• Rated Frequency: 50/60Hz
• Customize: Yes
• Model No.: Zw8-12
• Brand Name: Shengsu
• Size: Medium
• Lightning Shock Voltage: 75kv/85kv
• Ambient Temperature: -40-40
• Anti-Pollution Grade: Class III
• Wind Speed: ≤34m/S
• Pressure: Not More Than 700PA
• Mechanical Life: 10000 Times
• Altitude: ≤2000m
• Transport Package: Wooden Case
• Specification: pcs
• Trademark: SHENGSU ELECTRIC CO., LTD
• Origin: China
• Package Size: 90.00cm * 55.00cm * 85.00cm
• Package Gross Weight: 250.000kg

Product Description

ZW8-12/630-20 outdoor high voltage vacuum circuit breaker is an AC 50Hz three-phase power system. It is mainly used to break and close the load current, no-load current and short-circuit current of 10Kv power grid in urban areas. It can also be used as rural power grid. And the sub-switch of the small power system is a replacement product of the city network and the agricultural network without oil.

Product Parameters

order number	Project	unit	data
			6.3KA	12.5KA	20KA
1	Rated voltage	KV	12
2	Rated current	A	630(1250)
3	Rated short-circuit breaking current	KA	6.3	12.5	20
4	Rated short-circuit making current(peak)	KA	16	31.5	50
5	Rated peak withstand current	KA	16	31.5	50
6	Rated short time withstand current	KA	6.3	12.5	20
7	Power frequency withstand voltage(dry type)		42
	Lightning impuse withstand voltage(peak)		75
8	Rated operating sequence		Opening -0.3S closing and opening- 180S closing and opening
9	mechanical life	times	10000
10	Rated short-circuit breaking curent breaking times	times	30
11	Rated closing voltage of operating mechanism	V	110220
12	Rated opening voltage ofoperating mechanism	V	110220
13	Contact opening distance	mm	11±1
14	Overtravel(compression length of contact spring)	mm	3+1 -0.3
15	Three phase opening and closing asynchrony	ms	≤2
16	Contact closing spring tripping time	ms	≤2
17	Average opening speed	m/s	1.2±0.3
18	Average closing speed	m/s	0.6±0.2
19	Opening time	S	≤0.06
20	Closing time	S	≤0.1
21	Main circuit resistance of eachphase		≤200
22	Accumulated thickness ofallowable wear for dynamic and static contact	mm	3

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