Vacuum Disconnector

Product description

VS1 vacuum circuit breakers have been designed for indoor use and air insulated switchboards. 

Their switching capacity is sufficient to handle any conditions arising from switching of equipment and system components under normal operating and fault conditions, particularly short-circuits, within the parameters of their technical data. The vacuum circuit-breakers of type VB4, designed in column form, can be supplied both as individual units for fixed installation and mounted on chassis. Vacuum circuit-breakers are characterized by their simple and robust construction. They have a long life expectancy. There is no adverse effect on the vacuum, even from frequent switching of operating and short-circuit currents. 

Main technical specifications

NO.	Item	Unit	Data
1	Rated voltage	kV	12
2	Rated short-time power frequency withstａnd voltage ( 1 min)	kV	42( phase to phase,to earth) / 48( isolating distance)
3	Rated lightning(1 min) impulse withstａnd voltage(peak)	kV	75( phase to phase,to earth) / 85( isolating distance)
4	Rated frequency	Hz	1
5	Rated current	A	630,1250		630,  1250,  1600, 2000,  2500,  3150	1250,  1600,  2000, 2500,  3150,  4000
6	Rated short-circuit breaking current	kA	20	25	31. 5	40
7	Rated short-time withstａnd current( 4s)	kA	20	25	31. 5	40
8	Rated peak withstａnd current	kA	50	63	80	100
9	Rated short-circuit making current	kA	50	63	80	100
10	Rated short-circuit breaking current(different directions)	kA	17. 3	21. 7	27. 3	34. 6
11	Rated operation order		open - 0.3S - close open- 180S - close open			open - 180S - close open - 180S - close open
12	Opening time(rated voltage)	ms	30-60
13	Closing time(rated voltage)	ms	25-55
14	Rated output power of the energy storage motor	W	100
15	Breaking times under rated short-circuit current ( E2 grade)	times	30
16	Rated voltage of energy storage motor	V	AC/ DC220 ,AC/ DC110
17	Rated close operating voltage/current	V/A	AC/ DC220/ 1 ,110/ 2
18	Rated open operating voltage/current	V/A	AC/ DC220/ 1 ,110/ 2
19	Rated instantaneous overcurrent tripping action current	A	5
20	Rated voltage of the voltage loss trip	V	AC220,AC110
21	Rated on-off current of auxiliary switch	A	16
22	Energy storage time (in rated voltage)	s	<7
23	Secondary circuit (1 min) power frequency withstａnd voltage	V	2000
24	Main circuit resistance(without plum blossom contact)	μΩ	≤  45(630 ~800A) ,≤  35(1250A) ,≤30(1600-2000A) , ≤25(2500A)   ≤ 20(3150A and above)
25	Rated breaking current of capacitor bank ( C2 grade)	A	single fuse 800,back to back fuse 400
26	Distance between contacts	mm	9±1
27	Contact stroke	mm	3±1
28	Average closing speed	m/ s	0. 5~0. 9
29	Average opening speed	m/ s	1- 1. 7
30	Three - phase contactor opening and closing simultaneity	ms	≤1
31	Contactor closing bounce time	ms	<2
32	Mechanical life(M2 grade)	times	20000
33	Moving and static contactor allows accumulated wear thickness	mm	3

Main characteristics
1) Test voltage according DIN VDE 0670, part 1000, list 2
2) 4000 A with forced cooling
3) 3150 A with forced cooling in AP technology
4) Higher values on request
5) 360 mm for fixed, 280 mm for withdrawable Version
6) Circuit-breaker with heat sink 616 mm
7) Withdrawable Version
8) Circuit-breaker with heat sink 634 mm