11kV, 630A, 25kA Ring Main Gear

Ring Main Unit can also be provided with two number Load Break Switch with one number tee-off Vacuum Circuit Breaker with protective devices. It is highly flexible unit used in a wide range of applications including distribution switchboards, transformer substations, ring distribution networks and HV Connections to industrial & commercial sites. The units are developed to suit customer requirements for connection, supply, protection and sectionalizing with remote operation.

The CB comprises of 3 vacuum interrupters, which have a fault-make, fault-break rating. Earthing of the outgoing cable is achieved by the use of CB in series with the off-load disconnector / selector switch.

Ring Switch

These are fault-make load break switches utilizing a single break 3 position switches viz., ‘ON’, ‘OFF’ & ‘Earth’ functions.

  Rated Voltage & Rated Current:12kV, 630A Up to 2000A

  Frequency : 50Hz

  Short Time Withstand Current And Duration: 26.3kA/3Sec

  Insulation Level: 11kV : 28kV / 75kV Peak,33kV : 70kV / 170kV Peak

  Closing / Tripping Coil Voltage: 24VDC to 220VDC

  Spring Charge Mechanism: 230VAC

  Breaker Standard: IEC 62271 – 100, IS13318

  Degree of Protection: IP4X & 5X