Transformer Thermometer Work Principle
It is mainly on the basis of an oil temperature gauge, a current match and fitted with a heating element. Temperature sensor-the temperature in the transformer oil hole at the top of the tank, when the load is zero, the thermometer readings for the winding of transformer top oil temperature in the tank. When the load on the transformer, transformers current transformers out proportional to the load current, current matching is adjusted through embedded in the bellows of the electric components, electric heating elements heat, making further expansion bellows gas, meter displacement of elastic element increases. Therefore, after the transformer on load, displacement of elastic element is made up of transformer top oil temperature of transformer load currents in both decisions. Transformer thermometer indicating temperature of transformer top oil temperature and the coil temperature rise of oil and.