BS0211 type power transformer transformer demagnetization instrument

Product Introduction

The demagnetization device for power transformer transformers is a specialized equipment designed to eliminate the residual magnetism caused by the inherent hysteresis phenomenon of ferromagnetic materials after preventive testing, and to prevent the generation of large harmonics in the actual excitation current, which can cause misoperation of relay protection devices. It is developed and produced according to the GB/1094.4-2002 power transformer testing standard. The demagnetization speed of this power transformer transformer demagnetization device is fast, and its demagnetization effect is very obvious. It is suitable for eliminating residual magnetism in large power transformers of 35KV and above and before the transformer is put into operation, especially for large capacity transformers with voltage levels of 330kV and above. It is widely used in large substations and power generation enterprises.

After DC resistance tests and other DC tests, large power transformers and transformers will generate a large amount of residual magnetism, which will have a significant impact on the normal operation of the transformer and transformer

1. Causing the relay protection device of the transformer to malfunction, resulting in the failure of the transformer's operation.

2. The excitation inrush current generated by residual magnetism can cause damage to transformers due to excessive electrical force

3. The excitation inrush current generated by residual magnetization can cause the magnetic circuit of the transformer to be excessively magnetized, significantly reducing measurement accuracy and the operation of the relay protection device

4. The large amount of harmonics in the excitation inrush current generated by remanent magnetization causes serious pollution to the power quality of the power grid

Product Features

1. Suitable for eliminating residual magnetism before the operation of large power transformers of 35KV and above

2. The demagnetization speed is fast, and three-phase transformers can be demagnetized once or twice.

3. The instrument is equipped with automatic testing and manual testing

4. The maximum demagnetization current is 10A, with six levels of demagnetization current including automatic, 10A, 5A, 1A, 500mA, and 200mA, to meet the different testing needs of users.

5. On site use of 220V AC power supply is sufficient

6. Display progress percentage during demagnetization process

7. The instrument is easy to operate, small in size, lightweight, and convenient to carry.

Technical parameters (special parameters can be customized)

Demagnetization current: automatic, 10A, 5A, 1A, 500mA, 200mA, a total of six levels.

Working power supply: AC220V ± 10%

Power frequency: 50 (± 1) Hz

Environmental temperature: - 10℃～50℃

Environmental humidity: ≤ 85%RH

Dimensions: 400mm × 310mm × 160mm

Weight: 6kg