MV/HV Switchboard

» Single busbar air insulated metal-clad switchgear.
» Circuit breaker mounted on withdrawable truck.
» Simple and rugged shutter mechanism.
» Encapsulated feeder connections.

» 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.

» 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.

» IS 3427 and IS 12729.
» l IEC 60298 and IEC 60694.

» 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.

» Full metallic enclosure ensures high resistance to ingress and i nterference under all operating conditions.

» 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.

» 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.

» The vacuum circuit breaker has no effect on the environment during and after the switching operations.

» IS 13118.
» IEC 62271-100.

» 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.

» 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.
» All type tests carried out with VCB mounted inside the panel.