ZN63A-12(VS1)Type lndoor High Voltage Vacuum Circuit Breaker

Short Description:

Mainapplication ZN63A-12 (VS1) type indoor high voltagevacuum circuit breaker (hereinafter referred to as circuit breaker) is used forindoor high voltage switch equipment of power system, as a protection andcontrol unit of network equipment

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Main application

ZN63A-12 (VS1) type indoor high voltage vacuum circuit breaker (hereinafter referred to as circuit breaker) is used for indoor high voltage switch equipment of power system, as a protection and control unit of network equipment, industrial and mining enterprises power equipment, suitable for the place of frequent operation at rated working current or many times of breaking short-circuit current place. The circuit breaker uses the integrated design of actuator and the circuit breaker body, not only can be used as a fixed install unit, also can be equipped with special chassis, hand car unit.

The use of environmental conditions

1. The environment temperature: upper limit+40℃, lower limit -15℃ (allow storage at -30℃);

2. Altitude: no more than 2000m;

3. Relative humidity: daily average value is not greater than 95%, monthly average is not greater than 90%;

4. Saturated steam pressure: daily no larger than 2.2×10-3Mpa, monthly average is not greater than 1.8×10-3Mpa;

5. Earthquake intensity does not exceed 8 degrees;

6. No fire, explosion, pollution, chemical corrosion and severe vibration place；

Technical Parameter

Item	Unit	Parameter
Parameters of voltage, current, life
Rated voltage	kV	12
Rated short time power frequency withstand voltage(1 min)	kV	42
Rated lightning impulse withstand voltage (Peak)	kV	75
Rated frequency	Hz	50
Rated current	A	630 1250		1250 1600 2000 2500		1250 1600 2000 2500 3150 4000		4000 5000
Rated short-circuit breaking current	kA	20	25		31.5		40		50
Rated short-time withstand current(RMS)	kA	20	25		31.5		40		50
Rated peak withstand current	kA	50	63		80		100		125
Rated short-circuit closing current	kA	50	63		80		100		125
Rated single/back-to-back capacitor bank breaking current	A	630/400
Rated short-circuit current duration	S	4
Rated short-circuit breaking times	times	50				30
Rated operating sequence		O-t-CO-180s-CO rated short-circuit breaking current less than 31.5kA, t=0.3s rated short-circuit breaking current 40kA, t=180s
The main galvanic circle resistance	µΩ	≤50(less than 1250A); ≤40(less than 1600~2000A); ≤30(more than 2500A)
Rated operation voltage		≌220/110
Mechanical life	times	≥10000
Mechanical property parameters
Open clearance between contacts	mm	11+1
Overtravel	mm	3.0+0.5
Contact closing bounce time	ms	2				3
Three-phase, switching in different period	ms	≤2
Average opening speed	m/s	0.9~1.3
Average closing speed	m/s	0.5~0.8
Opening time (rated voltage)	ms	≤50
Closing time (rated voltage)	ms	≤70