Digital temperature controller TR42

programmablefor transformersRS-485

Temperature Control Protection Relay Protection Relay for temperature applications TR-42 has been created as an accessory of main importance for resin or air insulated three-phase MT transformers, as protection against dangerous over temperatures on the insulating coil, on the winding and to manage the intervention of cooling fans. The temperature is detected by 3 or 4 temperature sensors Pt-100 DIN 43760, three of them are located in the transformer coils, the fourth on the core. Display of the actual temperature of the 4 RTD Display & storage of the highest temperature of each RTD 3 programmable output contacts from 0° to 220°C level 1, level 2 and FAN control Automatic and “Always ON” fan mode Alarm of TR-42 failure or PT 100 disconnection Automatic fan start every week (bearing protections)