What types of transformers can transformer demagnetizers be used for?

What types of transformers can transformer demagnetizers be used for?

The demagnetizer is mainly used to eliminate residual magnetism in large transformers and other electromagnetic equipment, ensuring that these devices can be safely and stably put into operation. The following are the types of transformers that demagnetization devices can be applied to, summarized and explained in conjunction with relevant information in reference articles:

1. Voltage level

① Large power transformers of 35kV and above:

The demagnetizer is particularly suitable for large power transformers with voltage levels of 35kV and above. These transformers often require demagnetization treatment before being put into operation to prevent residual magnetism from affecting the normal operation of the transformers and the power grid.

② Higher voltage level transformer:

For equipment with voltage levels of 330kV and above, demagnetizers also have good application effects. These high-voltage transformers play a more important role in the power system, so their residual magnetism problem also needs to be given more attention and effectively solved.

2. Equipment type

① Power Transformer:

The demagnetization device is mainly used for demagnetization treatment of power transformers. Power transformers are important equipment used for voltage conversion in power systems, and their residual magnetism directly affects the normal operation of transformers and the stability of the power grid.

② Transformer:

In addition to power transformers, demagnetizers can also be used for demagnetization treatment of transformers. Transformers are important equipment used for measurement and protection in power systems, and their residual magnetism issues also need to be addressed and resolved.

3. Application scenarios

① Demagnetization before operation:

The demagnetization device is mainly used for demagnetization treatment of transformers and mutual inductors before they are put into operation. This is because after these devices undergo DC resistance tests and other operations, there is often residual magnetism that can affect the normal operation of the equipment. Therefore, demagnetization treatment is very necessary before operation.

② Daily maintenance:

In addition to demagnetization before operation, demagnetization devices can also be used for daily maintenance of transformers. During the operation of the transformer, new residual magnetism may occur due to various reasons. In this case, a demagnetizer can also be used for demagnetization treatment to ensure the normal operation of the transformer.

4. Technical features and advantages

① Multiple demagnetization modes:

The demagnetizer has multiple demagnetization modes and can choose the appropriate demagnetization method according to different needs. This provides users with greater flexibility and convenience.

② Visual control:

Equipped with complete data management software and LCD control screen, it can monitor and record the entire process of each demagnetization operation. This allows users to have a more intuitive understanding of the progress and effectiveness of demagnetization.

③ Efficient and reliable:

The demagnetizer adopts advanced demagnetization technology, which can quickly and effectively eliminate residual magnetism. Meanwhile, its built-in voltage monitor and field strength monitor can ensure that the voltage and field strength meet the rated standards during discharge, thereby ensuring the effectiveness of each demagnetization operation.

In summary, demagnetization devices can be widely used in large power transformers and transformers with voltage levels of 35kV and above, for demagnetization treatment before operation and during daily maintenance. Its multiple demagnetization modes, visual control, and efficient and reliable technical features provide users with great convenience and guarantee.

ZC-227 power Transformer degaussing instrument is a specialized equipment for eliminating residual magnetization hazards after DC resistance testing of large power transformers. It plays an extremely important role in protecting power transformers from excitation inrush current impacts and ensuring safe operation. Due to the presence of residual magnetism, when the transformer is put into operation, the residual magnetism of the iron core saturates the transformer’s half cycle, generating a large number of harmonics in the excitation current. This not only increases the reactive power consumption of the transformer, but may also cause misoperation of the relay protector, resulting in certain economic losses. So we must do demagnetization work before the transformer is put into operation to ensure the safe and normal operation of the transformer.

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