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Vacuum Circuit Breakers

Vacuum Circuit Breaker

PRODUCTS:

OPB - 36: 36 kV Outdoor Vacuum Circuit Breaker
OPB - 12: 12 kV Outdoor Vacuum Circuit Breaker
VHIH - 12: 12 kV Indoor Vacuum Circuit Breaker

Salient Features:

Robust construction with reliability and ease of operation.
Compact design & construction.
Minimal maintenance.
Negligible noise level.
High degree of safety of operating personnel.
Maneuverability of truck.
Horizontal draw out, horizontal isolation.
Cost effective.

Outdoor VCB Design Features:

The outdoor VCB's consist of vacuum interrupters housed in porcelain bushings with adequate creepage. The mechanism is of robust design, spring charged & Trip-Free type. Control Panel is provided with Instruments,  meters and protective relays. CTs, PTs are optional and can be supplied.

Indoor VCB Design Features:

The Switchgear cubicle has a compartmentalized design . These are:

Breaker / Truck compartment.
Busbar  / CT compartment / Cable end Terminations.
Instrument  and relay compartment.


Circuit breaker / Trucks :
The circuit breaker truck is of horizontal withdrawable and Isolation type provided with operating mechanism , Aux. Switch & Indicators. Vacuum interrupters are mounted in epoxy resign cast housing with epoxy drive rods. The truck is of a robust , simple design with welded steel construction. Components used are optimized to provide maximum reliability interlocks.
The breaker is provided with inter locks like

Withdrawl or insertion only in switched-off position.
Plug & sockets in the LT circuit with self aligning contacts.


The Mechanism used with the breaker is of spring charged and Trip - Free type.

Specifications:

Product

VHIH - 12

OPB – 12

OPB - 36

Rated Voltage (kV)

12

12

36

Rated Current (A)

630 / 800 / 1250

630 / 800 / 1250 / 1600 / 2000

800 / 1250 / 1600 / 2000

Frequency (Hz)

50 / 60

50 / 60

50 / 60

Rated power frequency withstand voltage

28 / 32

28 / 35

75 / 80

Rated impulse withstand voltage (kVp)

75 / 85

75 / 95

170 / 195

Rated short time current for 3 s (kA)

16 / 20 / 25

16 / 20 / 25

16 / 20 / 25 / 26.3

Degree of protection

lp4X

 

 

Rated short circuit making current

40 / 51 / 63

40 / 51 / 63

40 / 51 / 63 / 67

Operating duty

O – 0.3 s, CO – 3 m - CO

O – 0.3 s, CO – 3 m - CO

O – 0.3 s, CO – 3 m - CO

Applicable standards

IEC 62271-100 / 2003

IEC 62271-100 / 2003

IEC 62271-100 / 2003

 

© 2008 THE VICTORY GROUP