Installation position of temperature probe for dry-type transformer

Installation position of temperature probe for dry-type transformer

The temperature controller probe of a dry-type transformer must be installed on the low-voltage side, because the voltage on the high-voltage side is usually above 3kV, and the withstand voltage of the sensor is only 3kV. Placing the probe directly inside the high-voltage coil will cause the insulation of the sensor to be broken, the temperature controller and even the transformer shell to be charged, and the high-voltage side of the transformer will be short circuited to ground. The installation device for temperature control probe of dry-type transformer includes an air duct support bar and an insulation tie wire. The air duct support bar is set in the coil air duct of the dry-type transformer, and its upper end exposes the coil air duct. A binding hole is provided at the part where the air duct support bar exposes the coil air duct, and the insulation tie wire is threaded through the binding hole. This utility model ties the temperature control probe to the air duct support bar through insulated tie wires, which not only prevents the temperature control probe from falling off but also facilitates removal.

Is the temperature controller of the dry-type transformer installed on the high-voltage side or the low-voltage side

The installation position of the temperature controller can be designed according to customer requirements. It is usually placed on the low voltage side because the low voltage side of the transformer is generally facing forward, making it easy to observe. However, sometimes due to special reasons, the transformer may also face low voltage forward. At this time, the temperature controller will be placed on the high voltage side of the casing.

Installation position of temperature probe for sealed transformer high-power transformer

The sealed transformer has a position for inserting a thermometer at the top cover, and the temperature probe can be placed at the position where the thermometer is inserted. The temperature probe is mainly used to measure the temperature of the internal coil of the transformer. The temperature probe can be fixed in the center heat sink of the transformer, which is close to the shell. The temperature of the coil can be transmitted to the metal shell through the internal transformer oil. Some temperature probes are equipped with magnets and can be adsorbed on the iron shell.

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