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Circuit breaker

A technology of circuit breakers and main circuits, applied in circuits, parts of protection switches, status indication of switchgear, etc., can solve the problems of large space occupation of power distribution cabinets, increased installation and production costs of power distribution cabinets, and large volume of transformers. , to avoid the difficulty of copper bus wiring and wiring, and simplify the wiring and wiring.

Pending Publication Date: 2019-02-12
SOOAR TIANJIN ELECTRICAL EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the consideration of installation positioning and insulation protection, the installation of current transformers in the power distribution cabinet will result in a larger volume of the transformer and take up more space inside the power distribution cabinet.
Moreover, installing the current transformer in the power distribution cabinet will increase the difficulty of wiring and wiring of the copper bars in the power distribution cabinet, and increase the installation and production cost of the power distribution cabinet.

Method used

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Examples

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Embodiment Construction

[0020] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings. Here, the exemplary embodiments and descriptions of the present invention are used to explain the present invention, but not to limit the present invention.

[0021] figure 1 It is a schematic diagram of the three-dimensional structure of the appearance of a circuit breaker according to an embodiment of the present invention. figure 2 yes figure 1 The schematic diagram of the internal three-dimensional structure of the circuit breaker shown. image 3 yes figure 2 The three-dimensional structure schematic diagram of the shown circuit breaker after removing the first current transformer. see Figure 1 to Figure 3 , in some embodiments, the circuit breaker 100 may include: an insulating casing 101 , and at least one fir...

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Abstract

The invention provides a circuit breaker. The circuit breaker comprises an insulating shell and at least one first current transformer which is arranged in the insulating shell; a primary signal lineof each first current transformer is used for acquiring signals of a main circuit of the circuit breaker, and a secondary signal line of each first current transformer is connected with a meter of theoutside of the circuit breaker; the range of a rated secondary current standard value of each first current transformer is 1A to 5A; and a secondary winding enamelled wire diameter and a magnetic circuit sectional area of each first current transformer meet the following condition: the rated output power of each first current transformer is 2.5 VA. The first current transformers are arranged in the circuit breaker, and routing and wiring in a power distribution cabinet can be simplified.

Description

technical field [0001] The invention relates to the technical field of low-voltage electrical appliances, in particular to a circuit breaker. Background technique [0002] Circuit breakers are currently the most commonly used industrial and civil power distribution protection devices. They can not only connect, load, and break circuits when the circuits are normal, but also protect them when faults such as short circuit, overload, undervoltage, and loss of voltage occur in the circuit. trip protection circuit. The circuit breaker is usually installed in the power distribution cabinet as the main switch or shunt switch. When it is used as the main switch, its outlet end is usually equipped with multiple current transformers at the same time. power parameters. [0003] Common circuit breakers on the market have a plurality of current transformers connected in series through external copper plates, and these current transformers are installed and fixed in the power distributi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H71/08H01H71/04H01H71/02
CPCH01H71/0207H01H71/04H01H71/08
Inventor 南寅吴来顺丁国辉赵小苇南张如
Owner SOOAR TIANJIN ELECTRICAL EQUIP CO LTD
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