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2025-08-15

What are the reasons for the large temperature difference among the three phases of dry-type transformers?

Due to the radiation heat transfer between phase B and phase A and C, and the temperature of phase…

2025-07-26

How to distinguish between oil immersed test transformers and dry-type transformers?

1 single phase transformer: used for single-phase load and three-phase transformer group. (2) Th…

2025-07-09

What are the consequences of three-phase unbalance in dry-type transformers? What is the maximum deviation allowed for three-phase imbalance at the same time?

The general national standard stipulates that the unbalance rate of three-phase resistance line is…

What are the reasons for the large temperature difference among the three phases of dry-type transformers?

Due to the radiation heat transfer between phase B and phase A and C, and the temperature of phase A and C is relatively high, the temperature of phase B must be relatively high after radiation heat transfer. In order to prove this, 1. the thermal calculation software such as ANSYS shows that the temperature of phase…

2025/08

How to distinguish between oil immersed test transformers and dry-type transformers?

1 single phase transformer: used for single-phase load and three-phase transformer group. (2) Three phase transformer: used for voltage rise and fall of three-phase system. 2. By cooling method: (1) Dry type transformer: it is cooled by air convection and is generally used for small capacity transformers such as…

2025/07

What are the consequences of three-phase unbalance in dry-type transformers? What is the maximum deviation allowed for three-phase imbalance at the same time?

The general national standard stipulates that the unbalance rate of three-phase resistance line is not more than 2%, and that of phase is not more than 4% 3 hazards of unbalanced three-phase load 1.1 impact on distribution transformer (1) Unbalanced three-phase load will increase the loss of transfo…

2025/07

What is the difference between three-phase servo transformers and three-phase dry-type transformers?

No difference. The three-phase servo transformer is a three-phase dry-type transformer. The servo transformer is only named after its function (supplying power to the servo driver).

2025/06

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