General

CA-VD-R01B series Vacuum circuit breaker(VCB) mechanism is suitable for Gas insulated switchgear ring network cabinet circuit breaker switch closing, breaking operation of the supporting equipment, the series of circuit breaker mechanism using extension spring over the midpoint control circuit breaker closing action, breaking operation using the compression spring accumulation control. The product has the function of reclosing, interlocking function when used in combination with Disconnector switch mechanism, high reliability, mechanical life of more than 10000 times.

This product conforms to GB-1984-2003 “Common Technical Requirements for High Voltage Switchgear and Control Equipment Standards”.

Operating instructions for spring mechanism

CLOSING operation

Make sure to check the product has no deformation due to the transportation before install and fix it on the switchgear. Use the special operating handle to insert it into the mechanism and rotate it clockwise about 90 degrees and the switch of circuit breaker is CLOSING under the action of the structural spring force. Or during electric operation, the charging mechanism of the closing coil completes the closing operation. At the same time, The EARTHING operation can no longer be performed.

OPENING operation

Use the operating handle to insert it into the lower right part of the mechanism and rotate it by90 degrees counterclockwise and the switch of circuit breaker is OPENING under the action of the structural spring force. Or during electric operation, the charging mechanism of the closing coil completes the OPENING operation. At the same time, The CLOSING and EARTHING operations can no longer be performed.

EARTHING CLOSING and EARTHING OPENING Operation

Use the operating handle to insert it into the lower right part of the mechanism and rotate it by 90 degrees clockwise and the switch of circuit breaker is EARTHING CLOSING under the action of the structural spring force. At the same time, CLOSING operation can no longer be performed.

Use the operating handle to insert it into the lower right part of the mechanism and rotate it by 90 degrees counterclockwise and the switch of circuit breaker is EARTHING OPENING under the action of the structural spring force. At the same time, CLOSING or EARTHING operation can no longer be performed.