7553 Family

Salient features :

Single unit for temperature monitoring for Top Oil temperature & Three windings of the transformer.
Relay Outputs Seven C/O output contacts for Oil Alarm, Oil Trip, Winding 1 Alarm, Winding 2 Alarm, Winding 3 Alarm & Winding Trip common for all three windings & Fan Control.
Anticipated Fan Control & Auto Fan Exerciser.
Extremely high reliability for harsh environment conditions of switchyard.
Memorizes max. Temperature (recordings available even after power fail conditions).
Analog signals (4-20mA) for OTI & WTI (highest temp out of three winding temperatures) for remote indication.
RS-485 communication with MODBUS RTU Slave protocol for remote indication or SCADA connectivity.