12kv 50Hz/60Hz Indoor Vacuum Circuit Breaker for Switchgear Panel

• Customization: Available
• Breaking Capacity: High Voltage Circuit Breakers
• Operation: Electric Type
• Model NO.: VS1
• Speed: High-Speed Circuit Breaker
• Arc-extinguishing Medium: Vacuum
• Installation: Fixed
• Function: Conventional Circuit Breaker, Circuit-Breaker Failure Protection, Overcurrent Protection
• Certification: ISO9001-2000, CB
• Transport Package: Wooden Vcb
• Specification: 12KV
• Trademark: HEMG
• Origin: China
• Production Capacity: 50000

Product Description

ZN63A-12/Indoor AC Medium-voltage Vacuum Circuit Breaker
ZN63A-12(VS1) Indoor AC medium voltage vacuum circuit-breaker serves in the three-phase AC power system for rated voltage of 10kV and rated frequency of 50Hz to switch various kinds of loads in frequent operation places and can be used to protect and control electrical equipment in the industrial & mineral enterprise and power plant and substation as well. It can be matched with the KYN28A-12(GZS1) middle-arranged switchgear or XGN-stationary switchgear as well. The circuit-breaker conforms to the national standards of GB1984 Alternate current high-voltage circuit breaker , JB3855 Indoor alternate current high-voltage vacuum circuit breaker for rated voltage from 3.6kV to 40.5kV and DL/T403 Ordering specifications for indoor high-voltage vacuum circuit breaker for rated voltage from 12kV to 40.5kV , and international standard of IEC High-voltage alternate current circuit breaker . Rated short circuit breaking current Rated current Operating mechanism code (T means spring operating mechanism) Rated voltage Design Number Indoor Vacuum circuit breaker

Note: The original type of the product is Vs1:

1. Ambient air temperature: -25 ~+40 3.2
2. Relative humidity: Daily average value is not more than 95%;
3. Monthly average value is not more than 90%;
4. Daily average value of saturated water vapor pres
5. -sure is not more than 2.2kPa
6. Monthly average value of saturated water vapor pres -sure is not more than 1.8kPa
7. Altitude : 2000m and below
8. Earthquake intensity: No more than magnitude 8
9. No operating in such position as subject to flamm able gas, explosive danger, chemical corrosion and violent vibration
10. The arrangement of arc-extinguishing chamber of circuit-breaker and operating device adopts front and rear layout which makes them integrate with driving device to assure unsplit coordination perform ance of circuit-breaker.
11. The adoption of middle-sealing porcelain vacuum arc-extinguishing chamber, copper-chromium material for contact and contact configuration featuring axial Magnet field forms most advanced arc-extinguishing mode.
12. The vacuum arc-extinguishing chamber is fitted in side the insulating cylinder formed by the latest technology of APG, which not only reduces the overall dimension of circuit-breaker but prevents foreign substance from damaging circuit-breaker and surface pollution.

The main technical parameters of the breaker see table 1

. table 1
No. Name						Unit			Data	Data	Data			Data	Data		Data
1	Rated voltage					kV			12	12	12			12	12		12
2	Rated current					A			630, 1250	630, 1250	630, 1250, 1600			1250, 1600, 2000	2000, 2500, 3150,4000, 5000		3 150 4000 5000
3	Rated insulation level		1min power frequency withstand voltage			kV			42	42	42			42	42		42
			Rated lightning impulse withstand voltage			kV			75	75	75			75	75		75
4	Rated short-circuit breaking current					kA			16	20	25			31.5	40		50
5	Rated short-circuit making current (peak value)					kA			40	50	63			80	100		130
6	Rated peak withstand current					kA			40	50	63			80	100		130
7	Rated short-time withstand current					kA			16	20	25			31.5	40		50
8	Break times of rated short-circuit making current					Times			50	50	50			50	30		20
9	Rated duration of short-circuit					s			4	4	4			4	4		4
10	Rated operating sequence								O-t-CO-180s-CO*	O-t-CO-180s-CO*	O-t-CO-180s-CO*			O-t-CO-180s-CO*	O-t-CO-180s-CO*		O-t-CO-180s-CO*
11	Mechanical endurance					Times			20000	20000	20000			20000	10000		10000
12	Rated single capacitor bank breaking current					A			630	630	630			630
13	Rated back-to-back capacitor bank breaking current								400	400	400			400
*16kA, 20kA, 25kA, 31.5kA						t=0.3s 40kA t=180s
Stored energy motor						Stored energy motor adopts permanent-magnet DC motor. See table 2											table 2
Model		Rated voltage(V)						Rated output power(W)				Normal working voltage range(V)				Stored energy time under rated voltage(s)
ZYJ55-1		DC110			DC220			70				85%~110% rated voltage				10
Operating voltage of AC or DC is available
Technical parameters of opening, closing coils . See table 3.																table 3
Closing coil													Opening coil			Remarks
Rated operating voltage(V)				DC220 AC220			DC110 AC110						DC220 DC110 AC220,AC110,30VDC			No opening subject to the operating voltage of opening coil below 30% of rated operating voltage.
Coil power(W)				368									368
Normal working voltage range				AC 85%~110% Rated voltage DC 80%~110% Rated voltage									AC 85%~120% Rated voltage DC 65%~120% Rated voltage