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Air breaking mechanism integrating measurement and protection

A circuit breaking mechanism and air circuit breaker technology, applied in the protection switch operation/release mechanism, components of the protection switch, protection switches, etc., can solve the problems of inconsistent electrical parameters, inconvenient installation and production, and wire measurement errors, etc., and achieve intuitive navigation , good linearity, not easy to spark

Active Publication Date: 2016-07-13
HANGZHOU SHIBANG ELECTRIC TECH CO LTD
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AI Technical Summary

Problems solved by technology

[0003] The present invention provides an air circuit breaker with integrated measurement and protection, which mainly solves the problem of a set of current transformers inside the circuit breaker in the low-voltage switch cabinet in the prior art, and another set of current transformers is installed on the copper bar in the switch cabinet. Transformer, inconvenient installation and manufacture, measurement error caused by loose wires, technical problems of inconsistency between the electrical parameters measured by the multi-functional measuring instrument and the intelligent controller

Method used

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  • Air breaking mechanism integrating measurement and protection
  • Air breaking mechanism integrating measurement and protection

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Embodiment

[0025] Embodiment: A measurement and protection integrated air circuit breaker mechanism of this example, such as figure 1 , including an empty shell 1, an air circuit breaker 2 is arranged in the empty shell, and the air circuit breaker is connected to the busbar 3 through a line, such as figure 2 , image 3 , Figure 4 , the air circuit breaker includes a main shaft 4, a side plate 5, a cover 6, and a base 7, and a closing mechanism 8 is arranged on the base. There is a contact system 10, the current transformer 11 is set on the contact system 10, and there is an arc extinguishing chamber 12 above the contact system, such as Figure 5 , the current transformer includes a hollow transformer 13 fixed in the casing, a measuring transformer core 14, a fast saturation transformer core 16 are fixed on the hollow transformer, and a measuring transformer is wound on the measuring transformer core The coil 15, the fast saturated transformer core is wound with the fast saturated t...

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Abstract

The invention relates to an air circuit breaker and especially to an air breaking mechanism integrating measurement and protection. The air breaking mechanism mainly solve a technical problem that a current transformer is disposed inside a breaker in a low-voltage switchgear cabinet in the prior art and another current transformer is installed on a copper bar in the low-voltage switchgear cabinet so as to cause inconvenient installation and manufacture, measurement errors during wire loosening, and inconsistent electrical parameters measured by a multifunctional measurement instrument and an intelligent controller. The air breaking mechanism comprises a hollow housing in which an air circuit breaker is disposed. The base of the air circuit breaker is provided with a closing mechanism. One end of the closing mechanism is provided with a closing electromagnet. The other end of the closing mechanism is provided with a contact system. A current transformer sleeves a contact system and comprises a hollow mutual inductor. The hollow mutual inductor is provided with a measurement mutual inductor iron core and a rapid saturation mutual inductor iron core. A measurement mutual inductor coil is wound around the measurement mutual inductor iron core. A rapid saturation mutual inductor coil is wound around the rapid saturation mutual inductor iron core.

Description

technical field [0001] The invention relates to an air circuit breaker, in particular to an air circuit breaker with integrated measurement and protection. Background technique [0002] Air circuit breakers are mainly used in power distribution systems with AC 50Hz, rated voltage 400V (690V), and rated current below 6300A to distribute electric energy, protect lines, and protect power supply equipment from overload, short circuit, undervoltage, and ground faults. . The air circuit breaker adopts an intelligent measurement and protection controller with precise selective protection and multi-function, which can not only realize the protection of the line, but also protect the generator, motor and other equipment. The air circuit breaker is installed on the empty shell, and is combined with measuring instruments, current transformers for measurement, and connecting busbars to form a complete low-voltage switchgear. The intelligent measurement and protection controller of the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H71/02H01H71/24H01F38/30
CPCH01F38/30H01H71/02H01H71/24
Inventor 梁相军徐刚贺帅
Owner HANGZHOU SHIBANG ELECTRIC TECH CO LTD
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