A mutual inductance device for a temperature-controlled low-voltage circuit breaker

Abstract

The invention relates to a mutual inductance device for a temperature-control-type low-voltage circuit breaker. The mutual inductance device for the temperature-control-type low-voltage circuit breaker comprises a shell. A box cover is placed on the shell. A wiring through hole is placed on the shell. A component accommodating area is placed inside the shell. The mutual inductance device for the temperature-control-type low-voltage circuit breaker is characterized in that a mutual inductor is placed inside the component accommodating area; a communication cable is placed on the mutual inductor; meanwhile the communication cable penetrates through the wiring through hole; and a communication connector component is placed on the end tip of the communication cable. Furthermore, a temperature control component is placed on the communication cable. Therefore, the communication connector component can be connected with external devices with a plurality of specifications, when the current of the mutual inductor reaches 0.4 In, output power needed by the mutual inductor is well guaranteed, and when the current of the mutual inductor reaches 1.0 In, temperature rising can also be guaranteed. Furthermore, because heat moves outwards through a heat dissipation power resistor, not only service life of the mutual inductor can be prolonged but also measurement accuracy of the mutual inductor can be improved. Meanwhile, material cost of the mutual inductor can be reduced.

Description

technical field [0001] The invention relates to a mutual induction device, in particular to a mutual induction device for a temperature-controlled low-voltage circuit breaker. Background technique [0002] An instrument transformer is a device that converts voltage or current proportionally. Its function is mainly to convert high voltage or high current into standard low voltage (100V) or standard small current (5A or 1A, both refer to rated value) in proportion, so as to realize the standardization and miniaturization of measuring instruments, protection equipment and automatic control equipment. change. At the same time, the transformer can also be used to isolate the high-voltage system to ensure the safety of people and equipment. A device that converts voltage or current proportionally. [0003] However, because the fast saturated transformer must not only ensure sufficient output power at 0.4In, but also ensure that the temperature rise at 1.0In cannot be too high. ...

AI Technical Summary

Problems solved by technology

Therefore, the original transformer must be made into multiple specifications, that is, each rated current corresponds to a transformer, so as to barely solve this problem. Even so, the temperature rise of the transformer cannot be well controlled.

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