CN203218202U - Electricity leakage breaker - Google Patents
Electricity leakage breaker Download PDFInfo
- Publication number
- CN203218202U CN203218202U CN 201320204700 CN201320204700U CN203218202U CN 203218202 U CN203218202 U CN 203218202U CN 201320204700 CN201320204700 CN 201320204700 CN 201320204700 U CN201320204700 U CN 201320204700U CN 203218202 U CN203218202 U CN 203218202U
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- CN
- China
- Prior art keywords
- control device
- contact
- arc control
- arc extinguishing
- moving contact
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Abstract
The utility model relates to an electricity leakage breaker and the breaker mainly solves the problems, which exist in the existing electric-leakage breakers, of low arc extinguishing efficiency, poor stability and high possibility of burning of contacts. Contact points of a fixed contact (4) and a moving contact (3) are arranged to be adjacent to V-shaped ark striking ports (9); the V-shaped ark striking ports (9) of a plurality of spaced arc extinguishing grid pieces (7) form a moving channel for the moving contact (3). The breaker has the characteristics of high arc extinguishing efficiency, high stability and long service life.
Description
Technical field
The utility model relates to a kind of circuit breaker, refers in particular to a kind of residual current circuit breaker.
Background technology
Residual current circuit breaker is the switch of energy auto-action when leakage current surpasses predetermined value in the circuit.Residual current circuit breaker commonly used is divided into voltage-type and current mode two classes, and current mode is divided into two kinds of electromagnetic type and electron types.Residual current circuit breaker is used for preventing that the person from getting an electric shock, and should select according to different requirement of two kinds of prevention of electric shock of direct contact and indirect contact.During normal the operation; the residual current of system is almost nil or its value is very little; so the earth leakage protective device operating value can be adjusted very for a short time; system's generation earth fault (bumping shell, ground connection etc. as personnel's electric shock, apparatus insulated damage); big residual current then appears; earth leakage protective device can move reliably and cut off the electricity supply, the protection personal safety.
Experiment showed, when beginning in atmosphere or sealing voltage and surpass lOV, when electric current surpasses the circuit of 100MA, in the contact gap, can produce an extreme temperatures, brightness is extremely strong and the gas that can conduct electricity, and is called electric arc.
But a lot of residual current circuit breaker in the market, because problem on the structure, volume is all bigger, residual current circuit breaker mainly comprises operating mechanism, contact system, arc control device, release, current transformer.For Electric device with a contact, because electric arc is when mainly resulting from the contact open circuit, high temperature is scaling loss contact and insulation, under the serious situation even cause short circuit, electrical equipment blast, leads to fire, the safety of crisis personnel and equipment.
The arc-control device of present residual current circuit breaker is fairly simple mostly, and in the time of in being used in high-power circuit, contact opens and closes moment, can produce a large amount of electric arcs, if arc extinguishing is untimely, suddenly easily burns contact, even causes under serious situation and catch fire and explode.
The utility model content
In order to overcome deficiency and the defective in the background technology, the utility model provides a kind of residual current circuit breaker, mainly solves existing residual current circuit breaker and has low, the poor stability of arc extinguishing efficient, the problem of easily burning contact in use.
The technical solution of the utility model is: a kind of residual current circuit breaker, comprise housing, and be arranged on operating mechanism, contact system, main arc control device, release in the housing, described contact system comprises moving contact and fixed contact, be provided with a plurality of arc extinguishing grid pieces at interval that have in the described main arc control device, described arc extinguishing grid pieces upper end is provided with V-arrangement striking mouth, the contact point of described fixed contact and moving contact is in abutting connection with being located at described V-arrangement striking mouth place, and the V-arrangement striking mouth of a plurality of spaced arc extinguishing grid pieces constitutes the active tunnel of described moving contact.
The upside of corresponding main arc control device is provided with secondary arc control device on the described housing, is provided with run-on tab between described main arc control device and the secondary arc control device.
On the described housing, corresponding main arc control device bottom is provided with flash barrier.
The beneficial effects of the utility model: owing to take such scheme, residual current circuit breaker of the present utility model, the fixed contact that arranges and contact point and the striking mouth of moving contact are adjacent, and moving contact and fixed contact disjunction in striking mouth passage, generation earth fault (is got an electric shock as personnel in system, shell is bumped in apparatus insulated damage, ground connection etc.), big residual current then appears, zero-sequence transformer control moving contact action and in the process of cutting off the electricity supply, the a large amount of electric arcs that produce are absorbed into the striking mouth timely, then enter the quick arc extinguishing of main arc control device, and be fitted in electric arc on the moving contact and also move in V-arrangement striking mouth along with moving contact and introduce main arc control device, have arc extinguishing efficient height, the characteristics of good stability and long service life.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the structural representation of arc extinguishing grid pieces among Fig. 1.
Among the figure, 1-housing, 2-operating mechanism, 3-moving contact, 4-fixed contact, 5-run-on tab, 6-master's arc control device, 7-arc extinguishing grid pieces, 8-flash barrier, 9-V shape striking mouth, the secondary arc control device of 10-.
Embodiment
At accompanying drawing embodiment of the present utility model is described further below:
Shown in figure, this residual current circuit breaker, comprise housing 1, and the operating mechanism 2, contact system, main arc control device 6, the described contact system that are arranged in the housing 1 comprise moving contact 3 and fixed contact 4, be provided with a plurality of arc extinguishing grid pieces 7 at interval that have in the described main arc control device 6, described arc extinguishing grid pieces 7 upper ends are provided with V-arrangement striking mouth 9, described fixed contact 4 is located at described V-arrangement striking mouth 9 places with the contact point adjacency of moving contact 3, and the V-arrangement striking mouth 9 of a plurality of spaced arc extinguishing grid pieces 7 constitutes the active tunnel of described moving contact 3.The fixed contact that arranges and contact point and the striking mouth of moving contact are adjacent, and moving contact and fixed contact disjunction in striking mouth passage, generation earth fault (is got an electric shock as personnel in system, shell is bumped in apparatus insulated damage, ground connection etc.), big residual current then appears, zero-sequence transformer control moving contact action and in the process of cutting off the electricity supply, the a large amount of electric arcs that produce are absorbed into the striking mouth timely, then enter the quick arc extinguishing of main arc control device, and be fitted in electric arc on the moving contact and also move in V-arrangement striking mouth along with moving contact and introduce main arc control device, have arc extinguishing efficient height, the characteristics of good stability and long service life.
The upside of corresponding main arc control device 6 is provided with secondary arc control device 10 on the described housing, be provided with run-on tab 5 between described main arc control device 6 and the secondary arc control device 10, after main arc control device extinguish most of electric arc, be inducted into secondary arc control device and carry out the arc extinguishing second time, have the effect that comprehensive arc extinguishing and arc extinguishing efficient effectively improve.
On the described housing 1, corresponding main arc control device 6 bottoms are provided with flash barrier 8, prevent that effectively electric arc from burning out the circuit breaker inner part, and are safe, the characteristics of long service life.
Embodiment should not be considered as the restriction to utility model, but any improvement of doing based on spirit of the present utility model, all should be within protection range of the present utility model.
Claims (3)
1. residual current circuit breaker, comprise housing (1), and be arranged on operating mechanism (2) in the housing (1), contact system, main arc control device (6), described contact system comprises moving contact (3) and fixed contact (4), be provided with a plurality of arc extinguishing grid pieces (7) at interval that have in the described main arc control device (6), described arc extinguishing grid pieces (7) upper end is provided with V-arrangement striking mouth (9), it is characterized in that: described fixed contact (4) is located in abutting connection with being located at described V-arrangement striking mouth (9) with the contact point of moving contact (3), and the V-arrangement striking mouth (9) of a plurality of spaced arc extinguishing grid pieces (7) constitutes the active tunnel of described moving contact (3).
2. residual current circuit breaker according to claim 1, it is characterized in that: the upside of corresponding main arc control device (6) is provided with secondary arc control device (10) on the described housing, is provided with run-on tab (5) between described main arc control device (6) and the secondary arc control device (10).
3. residual current circuit breaker according to claim 1, it is characterized in that: on the described housing (1), corresponding main arc control device (6) bottom is provided with flash barrier (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320204700 CN203218202U (en) | 2013-04-22 | 2013-04-22 | Electricity leakage breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320204700 CN203218202U (en) | 2013-04-22 | 2013-04-22 | Electricity leakage breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203218202U true CN203218202U (en) | 2013-09-25 |
Family
ID=49207715
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320204700 Expired - Fee Related CN203218202U (en) | 2013-04-22 | 2013-04-22 | Electricity leakage breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203218202U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108269709A (en) * | 2017-01-03 | 2018-07-10 | 浙江正泰电器股份有限公司 | The arc-chutes of breaker |
| CN113745073A (en) * | 2021-09-03 | 2021-12-03 | 巨邦集团有限公司 | Molded case circuit breaker with zero flashover device |
-
2013
- 2013-04-22 CN CN 201320204700 patent/CN203218202U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108269709A (en) * | 2017-01-03 | 2018-07-10 | 浙江正泰电器股份有限公司 | The arc-chutes of breaker |
| CN113745073A (en) * | 2021-09-03 | 2021-12-03 | 巨邦集团有限公司 | Molded case circuit breaker with zero flashover device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130925 Termination date: 20150422 |
|
| EXPY | Termination of patent right or utility model |