Transformer protection and control RET630

RET630 has been designed to protect power and step-up transformers

in utility and industrial power distribution systems. RET630 is also ideal for

transformer bay control.

An optional RTD/mA module offers eight analog

RTD or mA measuring inputs and four mA

outputs. The RTD and mA inputs can be used for

measuring the oil temperature at the bottom and

top of the transformer tank and the ambient

temperature, thus extending the functionality of

the thermal overload protection and preventing

premature aging of the transformer windings.

The RTD and mA inputs can also be used for

tracking the position of the on-load tap changer.

The four mA outputs can be used for transferring

freely selectable measured or calculated analog

values to devices provided with mA inputs.