What is the cause of 1500 kva transformer overcurrent
- Categories:Onan transformers
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- Time of issue:2023-01-20
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(Summary description)If the so-called overcurrent refers to the overcurrent of the input current of the 1500 kva transformer, there may be the following reasons:
1. Transformer saturation. 2. Load short circuit! ! 3. The insulation of the transformer winding is not done well. 4. The characteristics of some magnetic core materials.
1500 kva transformer
1500 kva transformer
What is the cause of 1500 kva transformer overcurrent
(Summary description)If the so-called overcurrent refers to the overcurrent of the input current of the 1500 kva transformer, there may be the following reasons:
1. Transformer saturation. 2. Load short circuit! ! 3. The insulation of the transformer winding is not done well. 4. The characteristics of some magnetic core materials.
- Categories:Onan transformers
- Author:
- Origin:
- Time of issue:2023-01-20
- Views:0
What is the cause of 1500 kva transformer overcurrent?
If the so-called overcurrent refers to the overcurrent of the input current of the 1500 kva transformer, there may be the following reasons:
1. Transformer saturation, as we all know, the transformer winding will show inductance under AC current, its AC impedance is relatively large, and its impedance is proportional to the magnetic permeability. At the same time, the magnetic material has a saturation magnetic flux density. If the 1500 kva transformer is not designed properly or a bias phenomenon occurs, the working flux density of the 1500 kva transformer will be too high. When it is greater than the saturation flux density, the magnetic permeability will drop to 0. At this time, the AC impedance of the 1500 kva transformer is basically Only the resistance impedance is left, it is equivalent to directly connecting the positive and negative poles of the power supply to a wire, and the consequences can be imagined. In the switching power supply, this phenomenon often occurs in the push-pull topology. Generally, a capacitor is connected in series with the primary side to solve the bias problem.
2. Load short circuit! !
3. The insulation of the transformer winding is not done well, and there is a short circuit between turns or a short circuit of the primary and secondary windings.
4. The characteristics of some magnetic core materials, such as the influence of DC bias and temperature on magnetic permeability, are not considered in the design. Under high temperature and high DC bias, the impedance of the transformer winding is reduced and overcurrent occurs.
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