The NT511 is a comby unit to control the temperature of MV dry type and cast resin transformers and the power of the fan cooling system.

In AD version it is equipped with Analog 4-20mA and Digital RS485 Modbus RTU outputs simultaneously.

It is recommended with the use of tangential fans, thanks to the presence of 6 outputs 230 Vac 1.5 A max. (each).

Every single fan is protected by a fuse and in case of failure the unit provides a FAULT signal.

The metal structure is designed for installation on the box of the transformers.

4 Pt100 inputs allow the reading of the temperature of the 3 windings and in case of the core or the ambient.

The unit is equipped with dry contacts to signal FAULT, ALARM and TRIP.

For the fans control there are 6 active outputs which provide power directly to the fans.

All our units can also be supplied with a special coating on the electronic cards, resistant to difficult weather conditions, particularly characterized by high temperature and humidity (which are in tropical climates).

POWER SUPPLY: 230 Vac Other Versions NT511 BASIC unit without any digital or analog outputs (COD. 1CN0010) NT511 RS485 unit with digital RS485 Modbus RTU output (COD. 1CN0011)