TECSYSTEM Srl

NT539 Electrical connections

Temperature control of resin encapsulated and dry MV transformers

NT539

Specific microcontroller electronic device for controlling transformers with more than three windings, such as those used in DC / AC conversion systems; NT539 is also applicable on MV / LV distribution systems with three three-phase transformers.

It is equipped with 9 Pt100 inputs and the following relays: 3 for alarm (ALARM), 3 for release (TRIP) and 3 for ventilation (FAN).

In addition there is a tenth fault relay, common to the whole system, to signal the presence of a fault in the probes or inside the control unit.

All our control units can also be supplied tropicalized, i.e. resistant to difficult climatic situations, in particular characterized by high temperature and humidity (such as are found, in fact, in tropical climates).