Vacuum Circuit Breaker -VS1 | Meba Electric Co., Ltd

Meba Electric Co.,Ltd > Medium Voltage Series > Vacuum Circuit Breaker -VS1

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Product Description

ZN63 (VS1-12) indoor AC high-voltage vacuum circuit breaker (hereinafter referred to as circuit breaker) is an indoor switch gear with three-phase AC 50Hz and rated voltage of 12kV. It can be supplied to industrial and mining enterprises, power plants and substations as electrical facilities. For control and protection, and for places with frequent operations.

The circuit breaker meets the relevant requirements of the IEC5687 publication.
The circuit breaker adopts the integrated design of the operating mechanism and the circuit breaker body, which can be used as a fixed installation unit or a special propulsion mechanism to form a handcart unit.

Model specifications

No.	Parameters		unit	VALUE
1	Rated voltage		KV	12
2	Rated insolation,	Withstand		75
		Power frequency withstand		42
3	Rated short-circuit breaking Current		A	20	25	31.5		40
4	Rated current		A	630		630	1250	1250	1600
				1250		1600	2000	2000	2500
						2500	3150	3150	4000
5	Rated thermal stability current (valid valu)		A	20	25	31.5		40
6	Rated dynamic stable current (peak)		A	63	63	80		100
7	Rated short-circuit making current (peak value)		A	50	63	80		100
8	Rated short-circuit breaking current breaking times		Time	80	80	50		30
9	Secondary circuit power frequency withstand voltage		V /m	2000
10	Nominal Operation Sequence			C 0.3s; O/C:180s; O/C-180s; O/C:180s; O/C (40KA)
11	Rated thermal stabilization time		S	4
12	Rated single/back-to-back capacitor bank breaking current		A	630/400			800/400
13	Mechanical life			20000			10000

The parameters of the opening and closing coils

Parameters

Opening coil

Closing coil

Notes

Rated operating current

AC110/220; DC110/220

No closing for close wire to close when its voltage is less than 30% Ue.

Coil power(W)

245

Normal working voltage

85%-110% Ue

65%~120% Ue

Circuit breaker assembly adjusted mechanical characteristics, Table 3.

No.	Characteristics	Unit	Value
1	Contact Spacing	mm	11±1
2	contact stroke	mm	3.311±0.6
3	Average closing speed (6mm~contact closing)	m/s	0.611±0.2
4	Average opening speed (contact separation ~6mm)	m/s	1.111±0.2
5	Opening time (rated voltage)	m/s	20-50
6	Allowable cumulative thickness of wear and tear of moving and static contacts	m/s	35-70
7	Contact closing bounce time	ms	≤2	≤3(40kA)
8	Three-phase opening is not periodic		≤2
9	Closing time (rated voltage)	mm	3
10	Main conductive loop resistance	µΩ	≤50(630A);≤45(1250A)
			≤35(1600-2000A);
			≤25(2500A and higher
11	Closing contact pressure	N	2000±200(20kA),
			2400±200(25kA),
			3100±200(31.5kA),
			4500±250(40kA),