CN101465246B - Method for matching minitype case of large current rating plastic case creepage circuit breaker - Google Patents
Method for matching minitype case of large current rating plastic case creepage circuit breaker Download PDFInfo
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- CN101465246B CN101465246B CN2009100954540A CN200910095454A CN101465246B CN 101465246 B CN101465246 B CN 101465246B CN 2009100954540 A CN2009100954540 A CN 2009100954540A CN 200910095454 A CN200910095454 A CN 200910095454A CN 101465246 B CN101465246 B CN 101465246B
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Abstract
Disclosed is a large-rated current molded case leakage breaker small shell matching method, which adopts the following measures: A. a part fixing lug boss (11) with a screw hole 10 at the central part is arranged inside a base (5) of the shell; B. the fixing slot is likely to be arranged at the bottom surface of the base (5); C. the wiring space of a dense wiring region is expanded, a concave part (8) is deepened and lengthened, and a wiring groove (13) is deepened and widened; D. a rotating shaft bracket fixing table (9) closely attached to a side plate of the shell is moved inward to one side of a mounting ridge (7); E. the cross-section area of the connecting lead wire connecting a dynamic contact with the rear parts is expanded; F, and the cross-section area of the dynamic contact anda static contact is increased. With such measures, after the original DZ20L-400-type circuit breaker is transformed, the temperature rise can meet the national standard requirements and the miniaturization of the DZ20L-630-type leakage circuit breaker is successfully realized, so as to greatly reduce the costs for distribution box, leakage apparatus and molded case manufacturers and users and bring convenience to the installation in the distribution boxes.
Description
Technical field
The present invention relates to the shell miniaturization remodeling method of the big rated current residual current circuit breaker of installing on a kind of three-phase and four-line low-voltage circuit.
Background technology
The present invention is not the shell miniaturization remodeling method that the big rated current on the universal significance is moulded the shell residual current circuit breaker; mould the shell residual current circuit breaker because of the big rated current of various different numerical value; the residual current circuit breaker that defencive function is different; the residual current circuit breaker that pattern is different all can be according to needs separately; the shell of moulding that its different structure is arranged; be impossible transform with the miniaturization shell that a kind of unified method just can generally realize; can only be a kind of supporting transformation of miniaturization shell of residual current circuit breaker of concrete model, give the shell miniaturization of other model and transform with general guidance and inspiration.The present invention is ubiquitous in the market DZ20L-400 shape shell residual current circuit breaker in order to what transform, transforms the function that DZ20L-630 type residual current circuit breaker is realized in the back.The length of the shell of DZ20L-400 shape shell residual current circuit breaker is respectively 360 ± 2 (unit: mm, down together), 206 ± 2,116 ± 2 on the domestic market, and it is moderate to be installed in space shared in the distribution box.Another kind of DZ20L-630 type mould the shell residual current circuit breaker to mould shell long, wide, height is respectively 360 ± 2,282 ± 2,116 ± 2, width and volume are much bigger, being installed in space shared in the distribution box increases, this is to distribution box, circuit breaker, the manufacturer of plastic casing and all exist the problem that increases cost as user's power supply unit, adopt DZ20L-400 type residual current circuit breaker to mould the identical or close overall dimension of shell, to internal structure adaptation slightly, realize the function of DZ20L-630 type residual current circuit breaker, make the latter's volume miniaturization, undoubtedly, manufacturer and Subscriber Unit all there is active operation significance.Strong-willed this person is the too high problems of shell temperature rise of meeting in cut-and-try process more, do not reach GB and require just to give up halfway.To this, do not see that so far report and material object that success is arranged appear on the market.
Summary of the invention
At the prior art above shortcomings, the technical problem to be solved in the present invention provides a whole set of and moulds the small outline package matching method that shell is transformed into DZ20L-630 type residual current circuit breaker with the DZ20L-400 leakage breaker.
This method adopts following several measure to realize:
Establishing central part in the base of A, shell has the parts fixing lug boss of screw, in order to the element and the parts of fixedly activity heat production, energising heat production;
B, fixing slot are opened as far as possible on the bottom surface of base, open the fixedly threading hole of slotted eye, wiring groove of instantaneous release fixing threaded hole, load current instrument transformer in mounting groove;
C, enlarge the wiring space in intensive wiring zone, the recess of mounting groove dug dark and lengthening, with the wiring groove of base outer bottom dig dark with widen;
D, will be close to move in the rotary shaft rack fixed station of shell side side plate ridge one side will be installed;
E, enlarge the sectional area of wire that moving contact is connected with back part, than the sectional area expansion 40% of the same position lead of DZ20L-400.
The contact area of F, increasing dynamic/static contact is than the contact area increase 30% of former DZ20L-400 circuit breaker.
Adopt after above-mentioned several the measures, miniaturization with the DZ20L-630 type residual current circuit breaker that realizes after the transformation of former DZ20L-400 type residual current circuit breaker, the side plate temperature rise is that 43K, base plate temperature rise are 51K after measured, is lower than the GB requirement of 50K and 60K respectively, realizes up to standard.The supporting success of small outline package that this big rated current is moulded the shell residual current circuit breaker, the manufacturer of moulding shell for distribution box, Electrical leakage, Electrical leakage has reduced cost of material, cost of transportation, for the user has reduced equipment cost.
Description of drawings
Fig. 1 moulds the shell shape assumption diagram for DZ20L-400 and DZ20L-630 type residual current circuit breaker.
Fig. 2 moulds shell understructure (overlooking) figure for improved DZ20L-630.
Fig. 3 is outer bottom structure (looking up) figure of Fig. 2.
Embodiment
The present invention is described in detail below in conjunction with embodiment and with reference to accompanying drawing:
This big rated current is moulded shell residual current circuit breaker small outline package matching method and is adopted following several measures:
Establishing central part in the base 5 of A, shell has the parts fixing lug boss 11 of screw 10, and the high 1-2mm of this boss is in order to the element and the parts of fixedly activity heat production, energising heat production; Therefore strengthened between heat generating components and base resistance of heat transfer every, thereby reduce the temperature rise of shell.
B, fixedly the hole slot of usefulness is opened as far as possible on the bottom surface of base, opens instantaneous release fixing threaded hole 10, load current instrument transformer fixedly slotted eye 12, wiring groove 13 and threading hole 14 in mounting groove 6; The needs that the existing screw of porous is fixing also help the heat radiation of bottom surface.
C, enlarge the wiring space in intensive wiring zone, the recess 8 of mounting groove 6 dug dark and lengthening, with the wiring groove 14 of base 5 outer bottoms dig dark with widen; Length and width, big, dark recess 8 have the needs that connect up with the mounting portion electronic component with wiring groove 13, also help loose wiring, rapid heat dissipation, and temperature rise is little.Recess 8 is 8 ± 2mm with the degree of depth of wiring groove 14.
D, will be close to move in the rotary shaft rack fixed station 9 of shell side side plate ridge 7 one sides will be installed; Because rotary shaft rack is metal material, concentrate heat energy easily, and higher heat energy is arranged during the stationary contact bracket operate as normal that links to each other with support, therefore will move to the temperature rise that installation ridge 7 one sides can obviously reduce the shell side plate in it.
E, enlarge the cross-sectional area of the lead that moving contact is connected with back part, with the cross-sectional area of every phase conductor of former DZ20L-400 by 40-50mm
2Be extended to 70-80mm
2, cross-sectional area enlarges 40%.
The contact area of F, expansion moving contact and fixed contact;
270mm by former DZ20L-400 circuit breaker
2Cross-sectional area increases to 350mm
2, enlarge 40%.
It should be noted that this Electrical leakage is because of being installed on the three-phase and four-line low-voltage circuit, belong to the 3P+N wiring, the 1st groove and the 1st ridge and the 2nd, 3,4 grooves and the 2nd are played in the left side, 3 ridge structures are different so originally mould in the shell base, and mounting groove 6 of the present invention and installation ridge 7 do not comprise the 1st groove and the 1st ridge.
Claims (1)
1. a big rated current is moulded shell residual current circuit breaker small outline package matching method, it is characterized in that adopting following several measures:
Establishing central part in the base of A, shell (5) has the parts fixing lug boss (11) of screw (10), in order to the element and the parts of fixedly activity heat production, energising heat production;
B, fixing slot are opened on the bottom surface of base (5), have the fixedly threading hole (14) of slotted eye (12), wiring groove (13) of instantaneous release fixing threaded hole (10), load current instrument transformer in mounting groove (6);
C, enlarge the wiring space in intensive wiring zone, the recess (8) of mounting groove (6) dug dark and lengthening, with the wiring groove (13) of base (5) outer bottom dig dark with widen;
D, will be close to move in the rotary shaft rack fixed station (9) of shell side side plate ridge (7) one sides will be installed;
E, expansion moving contact are connected the cross-sectional area of lead with back part, than the sectional area of wire increase by 40% of DZ20L-400 residual current circuit breaker same area;
The contact area of F, increase moving contact and fixed contact increases by 30% than the moving contact of DZ20L-400 residual current circuit breaker and the contact area of fixed contact respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100954540A CN101465246B (en) | 2009-01-15 | 2009-01-15 | Method for matching minitype case of large current rating plastic case creepage circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100954540A CN101465246B (en) | 2009-01-15 | 2009-01-15 | Method for matching minitype case of large current rating plastic case creepage circuit breaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101465246A CN101465246A (en) | 2009-06-24 |
| CN101465246B true CN101465246B (en) | 2010-11-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009100954540A Expired - Fee Related CN101465246B (en) | 2009-01-15 | 2009-01-15 | Method for matching minitype case of large current rating plastic case creepage circuit breaker |
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| Country | Link |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107430964B (en) * | 2015-03-13 | 2020-01-07 | 通用电气公司 | Circuit breaker housing and method of assembly |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0418754A2 (en) * | 1989-09-18 | 1991-03-27 | Mitsubishi Denki Kabushiki Kaisha | Current limiting apparatus |
| EP0492038A2 (en) * | 1990-12-20 | 1992-07-01 | Mitsubishi Denki Kabushiki Kaisha | Electromagnetic contactor |
| US5159304A (en) * | 1989-09-18 | 1992-10-27 | Mitsubishi Denki Kabushiki Kaisha | Current limiting circuit breaker |
| CN2541948Y (en) * | 2002-04-01 | 2003-03-26 | 叶炳午 | Small breaker |
| CN2558070Y (en) * | 2001-12-27 | 2003-06-25 | 正泰集团公司 | Low-voltage small size plastic shell residual current acted circuit breaker |
| CN2838070Y (en) * | 2005-09-23 | 2006-11-15 | 高斌 | Multi-functional combined patch panel |
| CN2838031Y (en) * | 2005-11-23 | 2006-11-15 | 黄信桥 | Electrical leakage breaker casing with quick jack |
-
2009
- 2009-01-15 CN CN2009100954540A patent/CN101465246B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0418754A2 (en) * | 1989-09-18 | 1991-03-27 | Mitsubishi Denki Kabushiki Kaisha | Current limiting apparatus |
| US5159304A (en) * | 1989-09-18 | 1992-10-27 | Mitsubishi Denki Kabushiki Kaisha | Current limiting circuit breaker |
| EP0492038A2 (en) * | 1990-12-20 | 1992-07-01 | Mitsubishi Denki Kabushiki Kaisha | Electromagnetic contactor |
| CN2558070Y (en) * | 2001-12-27 | 2003-06-25 | 正泰集团公司 | Low-voltage small size plastic shell residual current acted circuit breaker |
| CN2541948Y (en) * | 2002-04-01 | 2003-03-26 | 叶炳午 | Small breaker |
| CN2838070Y (en) * | 2005-09-23 | 2006-11-15 | 高斌 | Multi-functional combined patch panel |
| CN2838031Y (en) * | 2005-11-23 | 2006-11-15 | 黄信桥 | Electrical leakage breaker casing with quick jack |
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| Publication number | Publication date |
|---|---|
| CN101465246A (en) | 2009-06-24 |
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Assignee: Huangshan Qianlong Electronic Co.,Ltd. Assignor: Hangzhou Qianlong Electric Co., Ltd. Contract record no.: 2011340000457 Denomination of invention: Method for matching minitype case of large current rating plastic case creepage circuit breaker Granted publication date: 20101117 License type: Common License Open date: 20090624 Record date: 20111212 |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101117 Termination date: 20190115 |
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| CF01 | Termination of patent right due to non-payment of annual fee |