vs1
VS1 Vacuum Circuit Breaker

Vacuum Circuit Breaker

Vacuum Circuit Breaker

Medium voltage vacuum circuit breakers

6.3kV 11kV, 13.8kV, 17.5kV 20kV, 24kV 33kV, 35kV 36 kV – 630…4000 A – 16…50 kA

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Product Description

Vacuum Circuit Breaker

 

Medium voltage vacuum circuit breakers

vacuum circuit breakers have been designed for indoor use and air insulated switchboards. VS1 series medium voltage vacuum circuit-breakers with lateral operating mechanism feature the separate pole construction technique.
Each pole houses a vacuum interrupter which is encased in the resin when the cylinder is moulded thanks to a special manufacturing process.
This construction method protects the vacuum interrupter from shock, pollution and condensation.

Feature

  • Vacuum used as insulation and arc interruption medium
  • Operationally safe and reliable in a wide range of ambient temperatures (-)50 to 400C
  • Capable of interrupting small magnetising and capacitive currents
  • Features of operating mechanism:

-O-C-O operation without recharging

-Closing spring charged by motor in less than 15 seconds

-Electrical anti-pumping

-Provision for manual charging

-Synchronisation and fast auto reclosure duty

 

Diagrammatic sketch

Circuit-breaker operating mechanism

A) Open/closed auxiliary contacts
B) Geared motor for closing spring charging
C) Built-in closing spring charging lever
D) Mechanical signalling device for circuit-breaker open/closed
E) Mechanical operation counter
F) Plug-socket connectors of electrical accessories in the truck
G Signalling device for closing springs charged/discharged
H) Service releases
I) Closing pushbutton
L) Opening pushbutton
M) Operating mechanism locking electromagnet
N) Additional shunt opening release
O) Transient contact
P) Contacts for signalling spring charged/discharged

 

Standards

The VS1  type circuit breaker is designed and tested to meet requirements of IEC – 62271-100 / IS: 13118.

 

Technical details

Rated voltage kV 12 24 36 40.5
Rated frequency Hz 50 – 60 50 – 60 50 – 60 50 – 60
Rated normal current A 630~4000 630.25 630~3150 630~3150
Rated short-circuit breaking current (symm.) kA 16~31.5 40 50 63 16~31.5 16~431.5 16~40
Rated short-circuit making current kA 40~80 100 125 158 40~80 40~80 40~100
Rated duration of short-circuit4) s 3 3 3 3 3 3 4
Fixed / Withdrawable Version • / • • / • • / • • / – • / • • / • • / •
Max. overall dimensions (fixed Version) p(mm) 150-275 210-275 210-275 275 210-275 275 280/360
vcb H(mm) 205-310 310 310 310 310 328/280 328
a(mm) 450-700 570-700 600-750 750 570-700 786/853 895/1000
b(mm) 424 424 459 459 424 429/789 555/686
c(mm) 461-599 599 608 677 631-661 876/973 1575
Weight kg 73-105 94-180 147-260 260 100-110 170-210 290-350
Embedded Pole
Assembled Pole

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Additional Information

Rated voltage

11kV, 17.5kV, 20kV, 33kV, 35kV, 40.5kV

Use

VCB switchgear