Mutual inductor turn number conversion device

Abstract

The invention relates to a mutual inductor turn number conversion device which comprises a first shell and a second shell, coil windings are arranged in the first shell and the second shell, a center hole is formed between the first shell and the second shell, a connecting socket is arranged on the first shell or the second shell, and the connecting socket comprises a common connecting terminal and an adjusting terminal; the mutual inductor turn number conversion device has the advantages that the mutual inductor needing to be accepted and inspected penetrates through the center hole formed by assembling the first shell and the second shell and is connected with the relay protection instrument through the connecting socket on the first shell or the second shell, and due to the fact that the adjusting terminal on the connecting socket can display coil windings with different numbers of turns, during inspection, the number of turns of the primary winding penetrating through the mutual inductor can be changed only by connecting different adjusting terminals, so that the magnetic coupling of the mutual inductor is changed, tests of current mutual inductors of various specifications are completed under the condition that the actual output primary current value is not changed, and the inspection and acceptance efficiency of the mutual inductor is improved.

Description

technical field [0001] The invention relates to a device for changing the number of turns of a transformer. Background technique [0002] At present, the acceptance method of high-voltage current transformers on the market is to apply an equivalent current according to the rated primary current of the current transformer, and then judge whether the transformer meets the requirements by detecting the secondary output current value of the transformer. This experiment requires a large Due to power reasons, current generators and large current generators often cannot be miniaturized in size. Excessive volume and weight have brought great changes to field testers. Currently, for the acceptance of feedthrough transformers, field testers The method is to increase the primary winding of the transformer to meet the problem of small output current of the conventional relay tester. However, the one-time winding process of the core-through transformer is cumbersome. When encountering a...

AI Technical Summary

Problems solved by technology

[0002] At present, the acceptance method of high-voltage current transformers on the market is to apply an equivalent current according to the rated primary current of the current transformer, and then judge whether the transformer meets the requirements by detecting the secondary output current value of the transformer. This experiment requires a large Due to power reasons, current generators and large current generators often cannot be miniaturized in size. Excessive volume and weight have brought great changes to field testers. Currently, for the acceptance of feedthrough transformers, field testers The method is to increase the primary winding of the transformer to meet the problem of small output current of the conventional relay tester

However, the one-time winding process of the core-through transformer is cumbersome. When encountering a transformer with a large rated current, it is often necessary to wind dozens of turns of the current wire, which greatly slows down the acceptance time on site.

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