Innovators in Protection Technology Multi-Protection Relaysfor Medium or Low Voltage Circuit Breakers ^ • Ground faulrdetection via zero-phase voltage • Directional ground fault detection • Ratio differential characteristic • Reverse power trip • Readout ofitn^alarm cause

TemTrip2 is a multi-protection relay for medium or low voltage circuit breakers that is capable of indicating via LEDs that the load current is picked up or the breaker trips open and showing various information including the phase current, line voltage and fault current The relay is available in three types: for generator protection, feeder circuit protection, and transformer protection. • The zero-phase voltage detection scheme is used to detect a ground fault, which allows the relay to apply to a non-grounded system where the current is hard to detect. • The directional ground fault protection...