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Home > Electrical & Electronics > Breaker & Protector > Circuit Breaker > ZN12-12 Series Fixed Type Vacuum Circuit Breaker

ZN12-12 Series Fixed Type Vacuum Circuit Breaker

Name: ZN12-12 Series Fixed Type Vacuum Circuit Breaker
Brand: Ghorit
SKU: 128389765

ZN12-12 Series Fixed Type Vacuum Circuit Breaker thumbnail-1

ZN12-12 Series Fixed Type Vacuum Circuit Breaker photo-1

US$ 1,000 - 2,000 MOQ: 1 Unit

Key Specifications

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Place of Origin:

Zhejiang, China

Brand Name:

Ghorit

Model Number:

3AF(ZN12-12)

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Ghorit Electrical Co., Ltd.

Payment & Shipping

Payment Methods:

Port of Shipment:

Ningbo or Shanghai

Delivery Detail:

Delivery time depends on order quantity.

Product Details
Company Profile
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Place of Origin Zhejiang, China

Brand Name Ghorit

Model Number 3AF(ZN12-12)

Type Vacuum

Poles Number 3

ZN12-12 series fixed type vacuum circuit breaker is rated voltage 12kV, three-phase AC 50Hz indoor high voltage switchgear is the introduction of Siemens technology manufacture.
The circuit breaker operating mechanism for the spring energy storage, which can be AC or DC operation, can also be used manually.
Simple structure of the circuit breaker, breaking capacity, long life operation functional and explosion hazards, maintenance is simple and applies to power plants, substations and other transmission and distribution system of control or protection switching, especially for important load breaking and frequent operation place.
This pruduct accordance to GB1984-89<AC high voltage circuit breakers >.

The use of environmental conditions

1.Ambient temperature: not higher than +40 °C , not less than -25°C .
2.Altitude: not exceed 2000m.

Mainly technical parameters

Item	Units	Uint
Item	Units	I	II	III		IV	V	VI	VII		VIII	IX	X
Rated voltage	KV	12	12	12		12	12	12	12		12	12	12
Rated current	A	1250	1600	2000		2500	1600	2000	3150		1600	2000	3150
Rated shorted-circuit break current	KA	31.5	31.5	31.5		31.5	40	40	40		50	50	50
Dynamic stability current (peak)	KA	80	80	80		80	130	130	130		140	140	140
4S thermal stability current (50KA for the 3s)	KA	31.5	31.5	31.5		31.5	40	40	40		50	50	50
Rated short circuit making current (peak)	KA	80	80	80		80	100	100	100		125	125	125
Rated short-circuit current breaking times	Times	50			30					12
Rated operating sequence		0-0.3s-CO-180s-CO
Rated lightning impulse withstand voltage	Kv	75
Rated short-time power frequency withstand voltage (1min)	Kv	42
Closing Time	Ms	≤75
Opening Time	Ms	≤60(50)
Mechanical life time	Times	20000(1-4)10000(5-10)
Rated current breaking times	Times	20000(1-4)10000(5-10)
Motor Power Energy Storage	W	275
Energy storage motor rated voltage	V	AC DC 110 AC DC220
Storage time	S	≤15
Closing solenoid rated voltage	V	AC DC :110 220
Tripping solenoid rated voltage	V	AC DC :110 220
Discharge Shunt trip Rated voltage	V	AC DC :110 220
Loss of pressure tripping device rated voltage	V	AC DC:110 220
Overcurrent tripping device rated current	A	5
auxiliary switch rated current	A	AC10 DC5

Note : Value of time for Storage energy tripping with opening.

Item	Unit	Parameters
		I,II,III,IV		V,VI,VII			VIII,IX,X
Contact travel	mm	11±1		11±1			11±1
Contact overtravel	mm	8±2		8±2			4 +1 -0.5
Closeing speed	m/s	0.6-1.4
Opening speed	m/s	1.0-1.8
Contact closeing spring time	mm	≤2
phases center distance	mm	210±1.5	230±1.5		250±1.5	275±1.5		280±1.5
Three phase opening synchronism	ms	≤2
Per phase electrical circuit resistance	υΩ	≤35

Note: Closing speed is for average speed of contact with last 6mm , opening speed is for average speed of contact with begin 6mm. Contact distance on input arc chamber , Siemens for 8±1mm (31.5kA ,40kA), American’s Westinghouse for 8mm (31.5kA)