Description

The AKM (Qualitrol) WTI 35 is a winding temperature indicator manufactured in Sweden, rated to 150°C with a 6-metre capillary tube and microswitch contact outputs. It monitors the hottest-spot winding temperature in oil-filled transformers using the thermal image principle. The WTI 35 model is designed for medium-power transformers and provides analogue dial indication plus relay contacts for alarm and trip.