Pre-emptive condition monitoring

For continuous knowledge of the operational availability of the

REF615R features, a comprehensive set of monitoring func

tions to supervise the relay health, the trip circuit, and the circuit

breaker health is included. The breaker monitoring can include

checking the wear and tear of the circuit breaker, the spring

charging time of the breaker operating mechanism and the gas

pressure of the breaker chambers. The relay also monitors the

breaker travel time and the number of circuit breaker operations

to provide basic information for scheduling breaker mainte nance.

Control voltage

− Option 1: 48 … 250 V dc, 48 … 240 V ac

− Option 2: 24 … 60 V dc

Product dimensions and weights

− Product Dimensions:  19.00” (482.60 mm) W x 5.22” (132.59

mm) H x 9.08” (230.66 mm) D

− Product Weight:  11.9 lb (5.4 kg)