The temperature controller of transformer is explained in detail

The temperature of the oil and windings inside a Transformer affects the performance and lifespan of the insulation materials, thereby impacting the transformer's lifespan and potentially leading to faults. Therefore, it is necessary to monitor the real-time temperature inside the transformer. Based on the temperature measurement principle, there are three types of thermometers: 1. Mercury thermometer; 2. Pressure thermometer; 3. Platinum resistance thermometer.

How the measured temperature is used:

1. Sent to the main meter for real-time pointer display;

2. Through the meter's auxiliary contacts, control the cooler and send alarm signals;

3. Analog signals are sent to the measurement and control device, displaying the temperature on the monitoring backend. Maintenance personnel handle abnormal temperature conditions according to the manufacturer's instructions and regulations.

Large transformers, which operate under high voltage and strong magnetic fields, generally use the "pressure thermometer" principle. There are two types of temperature controllers for transformers: oil surface temperature controllers and winding temperature controllers. Their principles and structures differ in one aspect. Here, we will directly introduce the winding temperature controller.