Promoda Switchgears Pvt. Ltd

An ISO 9001 : 2008 Organisation

Manufacturer of Electrical Control Panels, Instrument Panel, PLC Panel, AC/DC DRIVE Panel.

12KV 31.5KA Indoor VCB Panel upto 2500A

  Advantages of Vacuum over other interrupting media :

1) Highest dielectric strength over a small contact gap
2) Constant Iow contact resistance
3) Fastest recovery strength
4) Lowest arc energy dissipation
5) Lowest drive energy requirements
6) Minimum contact erosion
7) No fire hazards or explosion risks
8) Least number of moving parts and hence highest reliability


  Construction

The 3AH5 compact and re liable vacuum circuit breakers consist of three poles incorporating the vacuum interrupters housed in insulated shell. These poles are then covered with insulated pole cover from behind to make the design completely enclosed. The moving contacts of the vacuum interrupter a reconnected to the drive mechanism through insulated connecting rods. Operating mechanism is of stored energy type and suitable for auto reclosing duty. The operation can be manual / electrical as desired. 3AH5 Vacuum Circuit Breaker is housed inside 2 mm thick powder coated sheet metal with fu fly safety interlocked door & bushings for taking further connections by the Partner.

  Salient features of 3AH03 Vacuum Circuit Breaker

1) Conforms to IEC 62271-100 and is fully type tested
2) Simple and compact design
3) lnterrupters housed inside an enclosed insulated pole
4) Totally restrike free
5) Suitable for rapid auto reclosing
6) Highly reliable operation
7) Long maintenance free life
8) High switching capability
9) Fully established for all applications
10) Matching drive and interrupter characteristics
11) Trolley mounted for the ease of handling

  Partner’s Benefits

1) Modular design, enabling Partner’s ease for further panel development
2) Fully type tested switchgear
3) Most compact design
4) Lower design cost
5) Maintenance free new generation interrupters from Siemens

  Technical Data

12KV 31.5KA Indoor VCB Panel upto 2500A

 Ivac with 3AH5 Vacuum Circuit Breaker

 

 Rated Voltage

upto 12kV

 One minute power frequency withstand voltage (rms)

28kV

 1.2/50 micro second lightening impulse withstand voltage

75kVp

 Rated current

1250A / 2500A

 Short Time Withstand current (3 sec)

31.5KA

 Short Circuit Breaking current

31.5KA

 Rated making capacity

78.75KA

 Rated Operating sequence

O-0.3sec-CO-3min-CO

 Single capacitor bank breaking current

400A

 Cable charging breaking current

25A

 Guaranteed number of operations for vacuum interrupter at rated current

10,000

 Guaranteed number of operations for drive mechanism

10,000

 Is CB restrike free

Yes

 Type of operating mechanism

Motor Spring Reserve Drive (M.S.R.D.)

 Dimensions

 

1250A

2500A

 

 Height

1700 mm

 1700 mm

 

 Width

600 mm

 800 mm

 

 Depth

900 mm

 900 mm

  Switching Application

Ivac with 3AK6 VCB is well suitable for medium voltage power distribution applications like transformer feeder, line feeder in various industries, infrastructure projects and power utilities.