CN203826310U - Leakage circuit breaker - Google Patents
Leakage circuit breaker Download PDFInfo
- Publication number
- CN203826310U CN203826310U CN201420227597.9U CN201420227597U CN203826310U CN 203826310 U CN203826310 U CN 203826310U CN 201420227597 U CN201420227597 U CN 201420227597U CN 203826310 U CN203826310 U CN 203826310U
- Authority
- CN
- China
- Prior art keywords
- circuit breaker
- pedestal
- upper cover
- sensitive switch
- cover
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims abstract description 13
- 238000009413 insulation Methods 0.000 claims description 4
- 239000002184 metal Substances 0.000 abstract description 9
- 238000000034 method Methods 0.000 description 3
- 239000012467 final product Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
Abstract
The utility model discloses a leakage circuit breaker. The structure of the leakage circuit breaker comprises an insulating frame body and a circuit breaker assembly which is arranged in the frame body, wherein the frame body comprises a pedestal, a lower cover covered on the pedestal and an upper cover fastened on the lower cover, the pedestal is provided with at least two microswitches, the upper cover is provided with inching buttons which can move along the axial direction, and the inching buttons are pressed against the microswitches. The utility model aims to provide the leakage circuit breaker which is simple in structure, easy to maintain and convenient for power frequency withstand voltage tests without causing poor circuit contact of the internal circuit due to metal elastic sheets used for tests.
Description
Technical field
The utility model relates to a kind of circuit protection device, and more particularly, it relates to a kind of residual current circuit breaker.
Background technology
Residual current circuit breaker refers to the switch of energy auto-action when leakage current surpasses predetermined value in circuit, the breaker assembly that described residual current circuit breaker includes shell and is arranged at enclosure, described breaker assembly comprises zero sequence current mutual inductor, electric sub-member plate, leakage tripping device, when the person gets an electric shock, by zero sequence current mutual inductor, detecting a leakage current is leakage tripping device action open circuit.
Residual current circuit breaker is used for preventing that the person from getting an electric shock, and is protective device important in Circuits System, and each residual current circuit breaker must be done power frequency withstand test before dispatching from the factory, and to test the insulation level of residual current circuit breaker, weighs overvoltage ability.Residual current circuit breaker need disconnect two lines in three-phase power line when doing power frequency voltage-withstand test, common residual current circuit breaker adds two metal clipss to be electrically connected to the three-phase power line formation in breaker assembly in upper cover, and guarantee closing of circuit with bolt tightening, while doing power frequency voltage-withstand test, bolt is turned on and taken out metal clips to disconnect this section of circuit, operation is comparatively complicated and be limited to processing technology, the materials limitations of metal clips, metal clips is of low quality, the phenomenon that there will be loose contact after long-time use, causes residual current circuit breaker normally to work.
Utility model content
The deficiency existing for prior art, the purpose of this utility model is to provide a kind of residual current circuit breaker, is convenient to do power frequency voltage-withstand test and long-time use and also there will not be loose contact to cause circuit to disconnect.
For achieving the above object, the utility model provides following technical scheme: a kind of residual current circuit breaker, comprise insulation framework and be located at the breaker assembly in framework, described framework comprises pedestal, covers the lower cover on pedestal and is fastened on down the upper cover covering, described pedestal is provided with at least two sensitive switches, described sensitive switch includes the conducting portion of conducting sensitive switch and breaker assembly internal circuit, described upper cover is provided with inching button, and described inching button can be conflicted along its axial direction and sensitive switch.
By adopting technique scheme, circuit turn-on portion in sensitive switch forms and is electrically connected to at least two lines of three-phase power line in breaker assembly, the inching button sensitive switch of conflicting downwards makes breaker circuit closed, when carrying out industrial frequency withstand voltage test, only need unclamp inching button and get final product cut-off breaker circuit, reach and carry out industrial frequency withstand voltage test condition, compared with normal circuit breaker, also need use instrument to turn on bolt taking-up metal clips wherein simple and convenient a lot.
The utility model is further set to: described each sensitive switch respectively has an inching button for correspondence with it.
By adopting technique scheme, in described circuit breaker, each sensitive switch has the inching button that can independently control, thereby realize grading control, while being convenient to test, detect separately each circuit of breaker circuit and whether occur breakpoint, make test more flexible, perfect.
The utility model is further set to: on described inching button, be also provided with top cover, described top cover can embed upper cover and inching button is applied to axial compressive force.
By adopting technique scheme; by the top cover being embedded in upper cover, can to button, apply continual and steady axial compressive force easily; from but sensitive switch in closure state; when in needs circuit breaker, circuit disconnects; only need take off top cover can be very simple, and top cover can protect inching button not damaged by external cause simultaneously.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the microswitch structure schematic diagram in the utility model.
Reference numeral: 1. inching button; 2. upper cover; 3. lower cover; 4 sensitive switches; 5. pedestal; 6. switch is sub; 7. can moving plate; 8 back-moving springs; 9. normally open contact; 10. normally closed interlock; 11. springboards; 12. top covers.
Embodiment
Referring to figs. 1 through Fig. 2, the utility model embodiment is described further.
A kind of circuit breaker as shown in Figure 1, comprise insulation framework and be located at the breaker assembly in framework, described framework comprises pedestal 5, cover the lower cover 3 on pedestal 5 and be fastened on the upper cover 2 on lower cover 3, it is characterized in that described pedestal 5 is provided with at least two sensitive switches 4, described sensitive switch 4 includes the conducting portion of conducting sensitive switch 4 and breaker assembly internal circuit, described upper cover 2 is provided with inching button 1, described inching button 1 can be conflicted along its axial direction and sensitive switch 4, inching button 1 downwards extruding sensitive switch 4 makes breaker circuit closed, when carrying out industrial frequency withstand voltage test, only need unclamp inching button 1 and get final product cut-off breaker circuit, reach and carry out industrial frequency withstand voltage test condition, compared with normal circuit breaker, also need use instrument to turn on bolt taking-up metal clips wherein simple and convenient a lot.
In sensitive switch, be provided with as shown in Figure 2 switch 6, can moving plate 7, back-moving spring 8, normally closed interlock 10, normally open contact and springboard 11, two lines that described two sensitive switches 4 connect in described residual current circuit breaker three-phase power line, when normal operation of circuit breaker, the top cover 12 of described residual current circuit breaker is buckled in and on upper cover 2, pushes down inching button 1, make inching button 1 push down the springboard 11 in sensitive switch 4, make can moving plate 7 to be pressed in and on normally open contact 9, allow closing of circuit, now the back-moving spring 8 of 4 li of sensitive switches is in compressive state, as long as top cover 12 does not take down, spring just can resilience, with this, replace being contained in normal circuit breaker the metal clips on upper cover 2, get rid of the residual current circuit breaker internal circuit loose contact defect that the long-time crimp of metal clips causes.
Described each sensitive switch 4 respectively has an inching button 1 for correspondence with it, each sensitive switch 4 has the inching button that can independently control 1, thereby realize grading control, while being convenient to test, detect separately every circuit of breaker circuit and whether occur breakpoint, make test more flexible, perfect.
On described inching button 1, be also provided with top cover 12, described top cover 12 can embed upper cover 2 and inching button 1 is applied to axial compressive force.
By the top cover 12 being embedded in upper cover 2, can to button, apply continual and steady axial compressive force easily; from but sensitive switch 4 in closure state; when in needs circuit breaker, circuit disconnects; only need take off top cover 12 can be very simple, and top cover 12 can protect inching button 1 not damaged by external cause simultaneously.
Claims (3)
1. a residual current circuit breaker, comprise insulation framework and be located at the breaker assembly in framework, described framework comprises pedestal, covers the lower cover on pedestal and is fastened on down the upper cover covering, it is characterized in that described pedestal is provided with at least two sensitive switches, described sensitive switch includes the conducting portion of conducting sensitive switch and breaker assembly internal circuit, described upper cover is provided with inching button, and described inching button can be conflicted along its axial direction and sensitive switch.
2. residual current circuit breaker according to claim 1, is characterized in that: described each sensitive switch all arranges an inching button.
3. residual current circuit breaker according to claim 1 and 2, is characterized in that: on described, cover and be also provided with top cover, described top cover is fixed on while covering, and the gap of top cover and upper cover need be less than the height of button projection upper cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420227597.9U CN203826310U (en) | 2014-05-06 | 2014-05-06 | Leakage circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420227597.9U CN203826310U (en) | 2014-05-06 | 2014-05-06 | Leakage circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203826310U true CN203826310U (en) | 2014-09-10 |
Family
ID=51481781
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420227597.9U Expired - Lifetime CN203826310U (en) | 2014-05-06 | 2014-05-06 | Leakage circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203826310U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104733234A (en) * | 2015-03-04 | 2015-06-24 | 浙江天正电气股份有限公司 | Molded case circuit breaker |
| CN107636788A (en) * | 2015-04-09 | 2018-01-26 | 埃芬有限责任公司 | Converter system and the load break switch with converter system |
-
2014
- 2014-05-06 CN CN201420227597.9U patent/CN203826310U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104733234A (en) * | 2015-03-04 | 2015-06-24 | 浙江天正电气股份有限公司 | Molded case circuit breaker |
| CN107636788A (en) * | 2015-04-09 | 2018-01-26 | 埃芬有限责任公司 | Converter system and the load break switch with converter system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |