Why is the copper row of the salt bath furnace transformer burned out where it touches the electrode?

During the storage, transportation or operation and maintenance of the transformer insulating oil, if the quality of the oil is poor or the impurities and moisture are too much, the insulating strength of the transformer will be reduced. Sparks, arcing or risk of temperature.

If the coil or load of the salt bath electric furnace transformer is short-circuited, the transformer needs to accept a very large short-circuit current; if the maintenance system fails or the maintenance setting is too large, the transformer may be burned. Therefore, a reliable short-circuit protection device must be installed. Maintain good grounding.

Regarding the low-voltage system with maintenance and zero connection, the center point of the low-voltage side of the transformer should be directly grounded; when the three-phase load is unbalanced, a current will occur on the zero line. When the current is too large and the touch resistance is large, connect the address High temperature will occur, igniting the surrounding combustible materials.

The reason why the copper row of the transformer fault of the salt bath furnace is burned out with the electrode touching the place:

1. The electrode and the copper bar are in poor contact, the local temperature is too high, and the oxidation is corroded;

2. Frequent switching on and off, local current concentration, resulting in electrical isolation corrosion.

The method of cleaning the burnt out of the copper row of the transformer fault of the salt bath furnace and the electrode contact:

1. The contact between the electrode and the copper bar should be smooth and the touch is good;

2. The electrode part in contact with the uranium row can be opened for circulating cooling water, but the water cannot drip into the furnace;

3. Other parts of the copper bar can be painted and maintained.

Salt bath furnace transformer refers to an industrial furnace that uses molten salt solution as a heating medium to immerse the workpiece in the salt solution for heating (which can be heated in the salt solution through metal electrodes). According to the working temperature of the furnace, sodium chloride and potassium chloride are usually selected. , Barium chloride, sodium cyanide, potassium cyanide, sodium nitrate, potassium nitrate and other salts are used as heating medium. The heating speed of the salt bath furnace is fast and the temperature is uniform.