Transformer oil change thermostat pointer means what?

The temperature indicated by the red pointer is defined as the air cooling stop temperature. When the transformer reaches this temperature, the air-cooling system stops automatically and the transformer is cooled only by self-cooling.

The temperature indicated by the blue pointer is defined as the air cooling on temperature.When the transformer reaches this temperature, the air cooling system is automatically turned on and relies on the fans for cooling.

The temperature indicated by the green pointer is defined as the oil high alarm temperature.At the time the transformer reaches this temperature, theTransformer protection devicesSends a high oil temperature alarm signal to remind the duty personnel to take measures to check the cooling system, or reduce the transformer temperature to prevent the temperature from continuing to rise.

The temperature indicated by the yellow pointer is defined as a high oil temperature trip. When the transformer reaches this temperature, the transformer protection is forced to trip to protect the transformer body from causing further accidents.