MV/HV Switchboard
11kV Vacuum Circuit Breaker Panel
PPPL-IVAC/11kV Air insulated Metal-clad Switchgear with Vacuum Circuit Breaker on withdrawable truck
Construction
Salient features
Optional
Standards
Personnel safety
Tolerance
Tolerance
Construction
- Single busbar air insulated metal-clad switchgear.
- Circuit breaker mounted on withdrawable truck.
- Simple and rugged shutter mechanism.
- Encapsulated feeder connections.
Salient features
- No separate maintenance trolley required.
- Safe and easy truck movement b ehind closed cubicle door.
- Separately padlockable shutter f or bus and cable side fixed contacts.
- Automatic dropping ramp for facilitating truck removal.
Optional
- Wound primary/Torroidal CTs.
- lWithdrawble/fixed type PTs in cable chamber.
- Fully type tested including internal arc fault test.
- Belongs to 8BK8 series with all safety features.
Standards
- IS 3427 and IS 12729.
- l IEC 60298 and IEC 60694.
Personnel safety
- All switching operations performed with breaker compartment door closed.
- Earthed metallic partitions and shutters prevent contact with live parts.
- Individual high voltage compartment tested for Internal arc fault.
Tolerance
- Full metallic enclosure ensures high resistance to ingress and i nterference under all operating conditions.
Tolerance
| Rated voltage (frequency 50Hz) | 12 kV |
|---|---|
| Rated current of feeders | 1250 A |
| Rated current of the busbar | 2000A |
| Rated power frequency withstand voltage (rms) 60 sec. | 28 kV |
| Rated lighting impulse withstand voltage (peak) 1.2/50 microsec. | 75 kV |
| Rated short circuit Breaking current (rms) | 26.3 kA |
| Rated short time current (rms) withstand (3 sec.) | 26.3 kA |
| Rated short Circuit Making current (peak) | 66 kA |
Maximum values indicated.
*LV chamber / panel height variable as per number of equipments to be mounted.
*LV chamber / panel height variable as per number of equipments to be mounted.
3AH0 Vacuum Circuit Breaker The right choice for varied tasks
Construction
Advantages
Environmental
Standards
Freedom
Salient features
Tolerance
Construction
- Light weight and compact vacuum circuit breaker consisting of three encapsulated vacuum interrupter poles and a drive mechanism housing which forms a sturdy base for poles.
- Operating mechanism is of stored energy type and suitable for auto reclosing duty. It can be manual/ electrical as desired.
- Fully integrated contact arms with tulip type contacts.
Advantages
- Highest dielectric strength over a small contact gap.
- Constant low contact resistance.
- Fastest recovery strength.
- Lowest arc energy dissipation.
- Lowest drive energy requirements.
- Minimum contact erosion.
- No fire hazards or explosion risk.
- VCB has least number of moving parts and hence highest reliability.
Environmental
- The vacuum circuit breaker has no effect on the environment during and after the switching operations.
Standards
- IS 13118.
- IEC 62271-100.
Freedom
- Maintenance free with new generation imported vacuum interrupters.
- The gear box is sealed and lubricated for life.
- Free from chain snapping problem of conventional operating drive mechanism.
Salient features
- Conforms to IS/IEC standards and is fully type tested.
- Simple and compact design.
- Totally restrike free.
- Suitable for rapid autoreclosing duty.
- Highly reliable operation.
- Suitable for all environments.
- High switching capability.
- Matching drive and interrupter characteristics.
Tolerance
| Rated voltage (frequency 50Hz) | 12 kV |
|---|---|
| Rated current | 1250 A |
| Rated power frequency withstand voltage (rms) 60 sec. |
28 kV |
| Rated lighting impulse withstand voltage (peak) 1.2/50 microsec. |
75 kV |
| Rated short circuit Breaking current(rms) | 26.3 kA |
| Rated short time current (rms)withstand (3 sec.) |
26.3 kA |
| Rated short Circuit Making current (peak) | 66 kA |