RET670 Power Transformer Standby Earth Fault protection Relay with IEC103, Modbus, IEC61850, DNP Protocol

RET670 transformer differential protection relay
Two  step  residual  overvoltage  protection
Over-excitation  protection
Unbalance  protection  for  voltage
Loss  of  voltage  protection  of  system
Fuse  failure  supervision
Current  circuit  supervision
RET670 power transformer relay
IEC103 Modbus IEC61850 DNP Communication Protocol
Swiss made protection relay

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