VSG-12 Series Indoor High Voltage Vacuum Circuit Breaker

Product Detail

VSG-12 indoor HV vacuum circuit breaker is a 3-phase AC 50Hz 12kV indoor switch equipment.

♦ Installation way: withdrawable type, fixed type;

♦ Operating mechanism: spring operating mechanism;

♦ Pole type: assembled pole, embedded pole;

♦ Phase-to-phase distance: 150mm, 210mm, 275mm;

Environmental Conditions

♦ Ambient temperature: -15r~+40r；

♦ Altitude: <1000m;

♦ Relative humidity: daily average <95%, monthly average <90%；

♦ Earthquake intensity: <8 level;

♦ Places without fire, explosion hazard, serious filthy, chemical corrosion, as well as intense vibration.

Main Technical Parameters

No	Item	Unit	Value
1	Rated voltage	kV	12
2	1 min power frequency withstand voltage		42
3	Rated lightning impulse withstand voltage		75
4	Rated frequency	Hz	50
5	Rated current	A	630, 1250, 1600, 2000, 2500, 3150
6	Rated short circuit breaking current	kA	25, 31.5, 40
7	Rated short time withstand current	kA	25, 31.5, 40
8	Rated short circuit duration	s	4
9	Rated peak value withstand current	kA	63, 80, 100
10	Rated short circuit making current	kA	63, 80, 100
11	Secondary circuit power frequency withstand voltage (Imin)	V	2000
12	Rated single / back-to-back capacitor bank breaking current	A	630/400 (800/400 for 40kA)
	Opening time (rated voltage)	ms	20-50
14	Closing time (rated voltage)	ms	35-70
15	Mechanical life	Times	10000
16	Electrical life		E2 class
17	Moving and fixed contacts cumulative allowed wear thickness	mm	3
18	Rated closing operating voltage	V	AC/DC110/220
19	Rated opening operating voltage	V	AC/DC110/220

No	Item	Unit	Value
20	Motor rated power	W	90
21	Charging time	s	≤15
22	Clearance between open contacts	mm	9±1
23	Over travel	mm	3±1
24	Contact closing bounce time	ms	≤2
25	Three phase opening and closing asynchronism	ms	≤2
26	Average opening speed	m/s	0.9-1.7
27	Average closing speed	m/s	0.6 〜1.0
28	Main conductive circuit resistance	μΩ	≤45 (630A) ≤35(1250-2000A) ≤25(above 2500A)
29	Closing contact pressure of the contacts	N	3100-3700 (25-31.5kA) 4400-4800 (40kA)
30	Rated operating sequence		O-0.3s-CO-180s-CO

Note: when current is 4000A, need forced air cooling.

General Structure Drawing and Installation Size (unit: mm)

♦ Draw out type (assembled pole)

cabinet width	rated current (A)	rated short circuit breaking current (kA)	P	H	A	B	C	D	E	F	G	J	K	L	M	N	R	S	T
650	630	20’31.5	150	275	490	502	492	500	433	626	035	280	598	76	78	637	501	202	40
650	12j0	20-31.5	150	275	490	502	492	500	433	626	049	280	598	76	78	637	501	202	40
800	630	20-31.5	210	275	638	652	640	650	433	626	035	280	598	76	78	637	501	277	40
800	1250	20-40	210	275	638	652	640	650	433	626	049	280	598	76	78	637	501	277	40
800	1600	31.5-40	210	275	638	652	640	650	433	626	055	280	598	76	78	637	501	277	40
WOO	030	20-31.5	275	275	838	852	838	850	433	626	035	280	598	76	78	637	501	377	40
1000	1250	20-40	275	275	838	852	838	850	433	626	049	280	598	76	78	637	501	377	40
1000	1600	31.5-40	275	275	838	852	838	850	433	626	055	280	598	76	78	637	501	377	40
1000	1600-2000	31.5-40	310	310	838	852	838	850	361	680	079	295	586	77	88	698	529	377	0
1000	2500-4000	31.5-40	310	310	838	852	838	850	361	680	0109	295	586	77	88	698	529	377	0

♦ Draw out type (embedded pole)