Circuit breaker with grounding protection function and electric leakage protection function

A leakage protection and grounding protection technology, applied in emergency protection circuit devices, circuit devices, emergency protection devices with automatic disconnection, etc. The effect of practical advantages

Active Publication Date: 2016-12-14
TIANJIN BAILI ELECTRIC CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The reason is that although the protection principles of the two protection functions are similar, their protection ranges

Method used

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  • Circuit breaker with grounding protection function and electric leakage protection function

Examples

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Embodiment Construction

[0009] In order to further understand the content, characteristics and effects of the present invention, the following examples are given, and detailed descriptions are as follows in conjunction with the accompanying drawings:

[0010] like figure 1 As shown: the secondary output side of current transformer CT1 is connected to the intelligent release CE; the secondary output side of current transformer CT2 is connected to the intelligent release CE; the secondary output side of current transformer CT) is connected to There are three taps Z1, Z2, Z3 on the secondary output side of the zero-sequence transformer CT, and the tap Z1 is the common terminal. After connecting one end of the resistor R1, it is connected to the intelligent controller CE, and the tap Z2 is The leakage signal output terminal is connected to the No. 4 pin of the linkage DIP switch S1, and the tap Z3 is the ground signal output terminal, which is connected to the No. 5 pin of the linkage DIP switch S1; the ...

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PUM

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Abstract

The invention relates to a circuit breaker with a grounding protection function and an electric leakage protection function. The circuit breaker comprises the components of four current transformers (CT1,CT2,CT3,CT4), one double-tap zero-sequence mutual inductor (CTZ), a dial switch (S1), resistors (R1,R2), a button (S2) and an intelligent tripping device (CE). Switching between different signals is realized through matching between the dial switch (S1) and the double-tap zero-sequence mutual inductor (CTZ). After data acquisition and conversion by the intelligent tripping device (CE), protection is performed. Combination of the grounding protection function and the electric leakage protection function is realized. According to the circuit breaker, free switching between the electric leakage protection function and the grounding protection function is realized through changing the position of the dial switch (S1), production cost of the circuit breaker and user cost are reduced. Furthermore the circuit breaker can satisfy a requirement of a power supply system for selection from grounding protection and electric leakage protection.

Description

technical field [0001] The invention belongs to a circuit breaker, in particular to a circuit breaker with the functions of grounding protection and leakage protection. Background technique [0002] With the rapid and extensive application of electronic technology in various fields, intelligent circuit breakers have also appeared in circuit breakers, with overload long delay, short circuit short delay, short circuit instantaneous, grounding protection and leakage protection and other functions. Among them, the grounding protection and leakage protection functions do not exist at the same time in the same circuit breaker at present. If the leakage protection function is provided, there is no grounding protection function. If the grounding protection function is provided, there is no leakage protection function. When the user needs to change the protection function , you can only choose to purchase another circuit breaker. If manufacturers want to produce circuit breakers wit...

Claims

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Application Information

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IPC IPC(8): H02H3/00H02H3/34H02H3/16
CPCH02H3/00H02H3/165H02H3/34
Inventor 陈浩刘健勇
Owner TIANJIN BAILI ELECTRIC CO LTD
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