VAMP 140 Overcurrent and earth fault protection relay

Added speed and selectivity in the protection scheme is achieved by using the VAMP 140 as a fast busbar protection, using the reverse interlocking function.

The last fifty events are stored in the memory of the relay. The event information includes time, fault current, pre-fault current, fault type and elapsed delay.

15 minutes average and maximum current values are available in the relay.

Measured and calculated values can be connected to the freely scalable mA output.

Three overcurrent stages

Three earth-fault stages

Phase unbalance stage

Thermal overload stage

Circuit Breaker Failure protection

Trip circuit supervision

Arc flash protection (option)

Disturbance recorder