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Zero-sequence current transformer and electric leakage circuit breaking system

A zero-sequence current and leakage circuit breaking technology, which is applied in the direction of measuring current/voltage, circuit device, voltage/current isolation, etc., can solve the structural size limitation of the leakage coil, the inconvenience of multi-pole leakage circuit breakers, and increase the volume of multi-pole leakage circuit breakers And other issues

Pending Publication Date: 2021-04-23
上海佳岚智能科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the above-mentioned shortcoming of prior art, the object of the present invention is to provide a kind of zero-sequence current transformer and earth leakage circuit breaker system, be used to solve the existing zero-sequence current transformer that is used for multipole earth leakage circuit breaker, because its earth leakage coil Due to the limitation of structural size, it is inconvenient to install it on a multi-pole leakage circuit breaker, and it will increase the volume of the multi-pole leakage circuit breaker

Method used

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  • Zero-sequence current transformer and electric leakage circuit breaking system
  • Zero-sequence current transformer and electric leakage circuit breaking system
  • Zero-sequence current transformer and electric leakage circuit breaking system

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Embodiment Construction

[0039] The implementation of the present invention is described below through specific specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation modes, and various modifications or changes can be made to the details in this specification based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that, in the case of no conflict, the following embodiments and features in the embodiments can be combined with each other.

[0040] It should be noted that the diagrams provided in the following embodiments are only schematically illustrating the basic ideas of the present invention, and only the components related to the present invention are shown in the diagrams rather than the number, shape and num...

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Abstract

The invention provides a zero-sequence current transformer and an electric leakage circuit breaking system. The zero sequence current transformer comprises an iron core and a coil winding; the iron core is in a straight notch shape. The coil winding is wound on the outer surface of the iron core and is used for providing leakage current for a control module in the multi-pole residual-current circuit breaker and providing a leakage signal for a leakage module in the multi-pole residual-current circuit breaker; according to the novel zero sequence current transformer with the iron core of the straight notch type structure, the zero sequence current transformer can be conveniently installed on the multi-pole residual-current circuit breaker, meanwhile, it is guaranteed that the installation height of the zero sequence current transformer is consistent with that of the leakage coil of the circular structure in the existing two-pole residual-current circuit breaker, therefore, the height of the multi-pole residual-current circuit breaker does not need to be increased additionally, and thus miniaturization of the multi-pole residual-current circuit breaker is ensured, the multi-pole residual-current circuit breaker can be installed in a common distribution box, and troubles of large-scale disassembly, large-scale replacement and large-scale assembly in a low-voltage power grid are avoided.

Description

technical field [0001] The invention belongs to the technical field of zero-sequence current transformers, in particular to a zero-sequence current transformer and a leakage circuit breaking system. Background technique [0002] Zero-sequence current transformers are items used in the power industry. Zero-sequence current transformers are single-turn through-core current transformers, which are generally used for power protection equipment, such as: small current grounding line selection devices, computer harmonic elimination devices, leakage circuit breakers Devices and other supporting use. [0003] The leakage coil of the zero-sequence current transformer used in the existing leakage circuit breaker is usually a circular structure, and the current zero-sequence current transformer is often installed on the multi-pole leakage circuit breaker in an external way, and the multi-pole leakage circuit breaker Splicing and assembling together, the design of this structure and in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R15/18G01R19/165G01R31/52H02H3/32
CPCG01R15/183G01R19/16571G01R31/52H02H3/32
Inventor 邵锦彬杨昆
Owner 上海佳岚智能科技有限公司
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