Alliance Panels & Switchgears Pvt. Ltd.
   
 
 
 
 
 
  ......................................................
12kv Retrofitting VCB
Alliance Panels & Switchgears Pvt. Ltd.
 

Cost Effective Solution For All Type Of Old MOCB's

Fully type tested at CPRI
Easy adaptability.
Less down time than is required for new swithgear solution.
Extends safety & useful life of swithgear.
Reduction in maintenance and repairing costs
Reduction in cost compared with those needed to install completely new switch boards.
No disassembly of exiting cables & wiring of any structure as the only breaker is a direct replacement.
 

Salient Features of 12kv Vacuum Circuit Breaker

A Compact ,Light ,Weight Construction ,optimized to give minimum weight to KA ratio.
Superior mechanical endurance limit maintenance required only after 10,000 operations.
 
A unique "U" shaped insulation barries housing for the Vaccum interrupters ,imparting maximum mechanical strength against electrodynamic forces & provides most effective phase to phase & phase to earth segregation.
A simple motor charged spring operating mechanism noted for its high performance reliability.
A versatile mechanism capable of operating Vacccum Interrupters of any type.Hence,dependence on single source of Vaccum interrupters eliminated.
Trip free mechanism suitable for repeated auto re-closing duty.
Spring charging time of less than 10 seconds.
Totally enclosed construction for spring charging motor.
Easy visual check of contact erosion.
 
Alliance Panels & Switchgears Pvt. Ltd.
Operating Mechanism
 Type  Motor & Manually charged
 Charging Time of motorised  mechanism  Less than 10 Sec.
 Coil voltage*  24 /30 / 48 / 110 / 220 V DC
 Trip / closed coil power  350 Watts
 Motor Operating voltage  230 V AC / DC
 Power required by charging motor  80 Watts
 Type of closing latch  Designed to close & latch
 Auxiliary switch  Up to 8 NO + 8 NC
 Mechanical Operating Counter  5 digit non resetting type
* Different voltage as per customer requirement.
 
VCB Technical Data
 
Type
ASIVB - 12
Operating Method   Manual / Motor Spring ChargeType
Rated Voltage
KV
12
No. of Poles
Nos
3
Frequency
Hz
50 / 60
Rated Current
Amp
630 / 1250 / 2000
Short circuit Current
KA
13.1 / 20 /25
Making Current
KAP
33 / 50 / 62.5
Duration of short time current
Sec.
3
Insulation Level Impuls Power Frequency rms
Kvp
KV
75 / 95
28
Contact travel
mm
7 (+1, -1)
Opening Time
Cycles
Less than 2 cycles
Interrupting Time
Cycles
Less than 3 cycles
Closing Time
Cycles
Less than 3 cycles
Duty cycle
Cycles
0-0.3 sec. -CO-3 min-CO
Applicable Standard   IEC 62271-100, IS 13118
 
 
 
 
  copyright 2011-12, Alliance Panels & Switchgears Pvt. Ltd.