RET615 is a dedicated transformer protection and control IED for two-winding power transformers, unit and step-up transformers including power generator-transformer blocks in utility and industry power distribution systems. RET615 offers eight standard configurations to match applied transformer neutral earthing principles with either high impedance or numerical low impedance restricted earth-fault protection schemes. CT ratio differences and phase shifts of all commonly employed power transformer vector groups are numerically compensated for. RET615 features also local or remote control of the transformer HV side circuit breaker.
RET615 features genuine support for the IEC 61850 standard for communication in substations covering both vertical and horizontal communication, including GOOSE messaging with both binary and analog signals and parameter setting according to IEC 61850-8-1. It also supports the DNP3, the IEC 60870-5-103 and the Modbus® protocols. RET615 offers an optional Ethernet port for self-healing communication in ring networks. The solution eliminates single point of failure concerns and improves the reliability of the communication. The solution can be applied for the Ethernet based IEC 61850, Modbus® and DNP3 protocols.
RET615 is a member of ABB’s Relion® product family and part of its 615 product series.