CN104576227A - Complete machine ageing method for low-voltage electric appliance with dual-metal structure - Google Patents
Complete machine ageing method for low-voltage electric appliance with dual-metal structure Download PDFInfo
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- CN104576227A CN104576227A CN201510008314.0A CN201510008314A CN104576227A CN 104576227 A CN104576227 A CN 104576227A CN 201510008314 A CN201510008314 A CN 201510008314A CN 104576227 A CN104576227 A CN 104576227A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H69/00—Apparatus or processes for the manufacture of emergency protective devices
- H01H69/01—Apparatus or processes for the manufacture of emergency protective devices for calibrating or setting of devices to function under predetermined conditions
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Abstract
Provided is a complete machine ageing method for a low-voltage electric appliance with a dual-metal structure. The method comprises the following steps that firstly, before an assembled low-voltage electric appliance product is verified, the complete machine product of the low-voltage electric appliance is connected with 1.2-6-time rated currents of a three-phase main circuit, and complete machine ageing is performed for five to twenty minutes; secondly, after complete machine ageing is completed, the whole machine is cooled until the product restores; thirdly, the complete machine is connected with 1.05-time rated currents and stabilized for twenty to forty minutes, and regulation is performed on the early released product; the complete machine is connected with 1.2-time rated currents and acts for ten minutes to two hours, and regulation is performed on the non-released product in the process. According to the complete machine ageing method, complete ageing technology is used for solving the multiple problems of an existing dual-metal type thermal relay; in the whole automatic production process, the stability of a dual-metal piece can be effectively improved and maintained, zero wander of the dual-metal piece can be avoided, and manufacturing, assembling and inspection of the electric appliance can be achieved conveniently.
Description
Technical field
The present invention relates to the long delay protection electrical equipment with two piece structure, particularly relate to a kind of method that complete machine that can be used for two gold plaque formula thermal overload relay is aging, be also applicable to the electrical equipment such as breaker of plastic casing, miniature circuit breaker with two golden structures.
Background technology
The long delay protection electrical equipment with two piece structure industry and civilian on all popularize use in a large number; for thermal overload relay (hereinafter referred to as " thermal relay "); thermal relay utilizes the thermal effect of electric current to cut off a kind of protective device of circuit; normal and contactor with the use of; for transshipping, disconnected mutually and the protection that runs of current imbalance, main protection to as if the control of motor and other electric equipment febrile states of circuit.Two gold plaque formula thermal relay obtains because its structure is simple, volume is little, price is low and protective value is good and applies the most widely; but find that the operating characteristics reliability of this series products is not high in practice; even if the accordance of the thermal relay size shelves characteristic that world-famous low-voltage electrical apparatus company manufactures also can only reach about 80%; to trace it to its cause the characteristic extremely unstable of the parts bimetal leaf being most critical in thermal relay, cause manufactured thermal relay product performance fluctuation larger.
The way of the stability of the two gold plaque of current common raising has two kinds: one is that bimetal leaf is carried out high/low temperature process, and the second carries out heavy current impact to bimetal element.Adopt the first bimetal leaf high/low temperature processing method, although punching press sheet metal out be have passed through high/low temperature process, but in aft-loaded airfoil operation in the fabrication process (as welding, adjust cold synchronously etc.), again can cause two gold plaque internal stress, this is just pre-buried manufactured thermal relay product performance easily produces the hidden danger of fluctuation because of the characteristic extremely unstable of bimetal leaf.Adopt the processing method of the second bimetal element heavy current impact, although carry out super-high-current impact to the bimetal leaf parts of processing, the attack time is very short, and effect is unsatisfactory.In checking procedure generally after thermal relay assembling completion, two gold plaque formula thermal relay product heating, there is creep at high operating temperatures in the plastics such as two gold plaque and housing, this can change causing two fixing relative position preset between gold plaque and housing, and what occur being commonly called as does not wish " null offset " defect that finished product has.And the common deficiency existing for technique of the stability of the two gold plaque of above-mentioned two kinds of common raisings cannot avoid this problem exactly, so, obtain the high stability of thermal relay product performance, must find and can overcome the way that " null offset " defect effectively improves the stability of two gold plaque.
Summary of the invention
The object of the present invention is to provide a kind of method that low-voltage electrical apparatus complete machine with two golden structure is aging, by the above-mentioned two problems adopting complete machine aging technique to solve existing two golden formula thermal relay existence simultaneously, conscientiously can not only improve in whole automated production process and keep the stability of two gold plaque and avoid two gold plaque null offset, and electrical equipment manufacture, assembly and checkout all can conveniently be realized.
For achieving the above object, present invention employs following technical scheme.
There is the method that the low-voltage electrical apparatus complete machine of two golden structure is aging, comprise the following steps:
A), before verifying after low-pressure electronic equipment product has been assembled, this low-voltage electrical apparatus machine product being connected three-phase main circuit 1.2 ~ 6 times of rated current, to carry out complete machine aging;
B) complete machine is aging complete after complete machine be cooled to product reset;
C) connect three-phase 1.05 times of rated current and carry out adjustment of threading off morning, adjustment is carried out to dropout morning product in the process;
D) connect 1.2 times of rated current actions not thread off adjustment, adjustment is carried out to product of not threading off in the process.
Further, described step complete machine burin-in process a) both can adopt automatic jig to complete on the automatic production line of final assembly, also can complete on the long delay checking table of the long delay protection electrical equipment effect for having two piece structure.
Further, described step complete machine burin-in process electric current a) can reduce change from high power, described step c gradually) thread off time of adjustment morning be 20 minutes ~ 30 minutes.Because of product, in the 1st step, have passed through high power electric current aging, and product obtains enough heats, and this verifies the heat balance time of 1.05 times by shortening long delay greatly.
Further, described step complete machine burin-in process electric current a) can reduce change gradually from high power, and constant multiple also can be adopted constant.
Further, described step complete machine burin-in process electric current a) is 1.3 times of rated current.
Further, described step complete machine ageing treatment time a) is 5 ~ 20 minutes.
Further, described step b) complete machine cooling time be 5 minutes.
Further, described step c) thread off time of adjustment morning be 20 minutes ~ 40 minutes.
Further, described steps d) time of adjustment of not threading off be 10 minutes ~ 2 hours.
Further, described step complete machine burin-in process a) for continuing 10 minutes under electric current is 1.3 times of nominal current conditions, described step b) complete machine cooling time be 5 minutes, described step c) stabilization time be 20 minutes, described steps d) operate time be 10 minutes.
The method that the low-voltage electrical apparatus complete machine with two golden structure of the present invention is aging, adopts big current to carry out complete machine to the low-pressure electronic equipment product after assemble aging, effectively avoids pair gold plaque Zero drift in main amplifier, greatly improve the reliability of product.And, the time of early dropout product adjustment can be shortened greatly.
Accompanying drawing explanation
Fig. 1 is the block diagram that the method that a kind of low-voltage electrical apparatus complete machine with two golden structure of the present invention is aging is described.
Fig. 2 illustrates that the present invention has an embodiment block diagram of the aging method of the low-voltage electrical apparatus complete machine of two golden structure.
Embodiment
Below in conjunction with two embodiments that Fig. 1 to Fig. 2 provides, further illustrate several embodiments of the aging method of the low-voltage electrical apparatus complete machine with two golden structure of the present invention.The method that the low-voltage electrical apparatus complete machine with two golden structure of the present invention is aging is not limited to the description of following execution mode.
The method that of the present invention shown in the block diagram of Fig. 1 has the low-voltage electrical apparatus complete machine of two golden structure aging adopts complete machine burin-in process before verifying after low-voltage electrical apparatus finished product assembling completion; complete machine burin-in process both can adopt automatic jig to complete on the automatic production line of final assembly, also can complete on the long delay checking table of the long delay protection electrical equipment verification for having two piece structure.Needed for complete machine burin-in process, electric current is from main circuit, can connect with main circuit or be connected in parallel, and this electric current is 1.2 ~ 6 times of rated current, namely connects three-phase main circuit 1.2 ~ 6 times of rated current and carries out complete machine aging 5 ~ 20 minutes.Here complete machine burin-in process electric current can be reduce change gradually, reduce gradually from high power (such as 6 times), also can be constant, namely constant multiple (such as 1.3 times) is adopted, the higher then ageing time of electric current multiple is then shorter, the electric current needed for complete machine burin-in process and whether change can according to different low-pressure electronic equipment products characteristic requirements select and adjustment.Enter complete machine cooling processing after complete machine burin-in process, the time being cooled to product reset can do different choice because product is different.Then proceed to adjustment of early threading off, product is connected three-phase 1.05 times of rated current and is verified electric current as long delay, stablizes 20 minutes ~ 40 minutes, in this step as fruit product is early threaded off, can carry out adjustment to threading off the morning of product.But because of product, in the 1st step, have passed through high power electric current aging, and product obtains enough heats, and this verifies the heat balance time of 1.05 times by shortening long delay greatly, only needs 20 minutes ~ 40 can be determined by different product the time here.Finally proceed to adjustment of not threading off, product connects 1.2 times of rated current as product verification electric current of not threading off, and connects 1.2 times of electric current actions 10 minutes ~ 2 hours, to carry out adjustment to product of not threading off in the stage between at this moment.
Illustrate the embodiment of the method that the low-voltage electrical apparatus complete machine with two golden structure of the present invention is aging below.
See Fig. 2, an embodiment of the inventive method comprises the steps:
1., before verifying after low-pressure electronic equipment product has been assembled, this low-voltage electrical apparatus machine product is connected three-phase main circuit 1.3 times of rated current and carries out complete machine aging 10 minutes.
2. complete machine is aging complete after complete machine cool 5 minutes and reset to product.
3. connect three-phase 1.05 times of rated current, stablize 40 minutes, carry out the adjustment of dropout morning product, early threading off at this process product can to product adjustment.
4. connect 1.2 times of rated current actions 10 minutes, adjustment is carried out to product of not threading off in the process.
Second embodiment of the inventive method comprises the steps:
1. before verifying after low-pressure electronic equipment product has been assembled, this low-voltage electrical apparatus machine product is connected on automatic jig line three-phase main circuit 6 times of rated current, and reduce described electric current gradually to 1.2 times, carry out complete machine aging 8 minutes.
2. complete machine is aging complete after complete machine cool 7 minutes and reset to product.
3. on long delay checking table, connect three-phase 1.05 times of rated current, stablize and within 25 minutes, carry out the adjustment of dropout morning product.Because of product, in the 1st step, have passed through high power electric current aging, and product obtains enough heats, and this verifies the heat balance time of 1.05 times by shortening long delay greatly.
4. on long delay checking table, connect 1.2 times of rated current actions 50 minutes, product adjustment of can not threading off.
3rd embodiment of the inventive method comprises the steps:
1. before verifying after low-pressure electronic equipment product has been assembled, this low-voltage electrical apparatus machine product is connected on automatic jig line three-phase main circuit 6 times of rated current, and reduce described electric current gradually to 1.3 times, carry out complete machine aging 5 minutes.
2. complete machine is aging complete after complete machine cool 8 minutes and reset to product.
3. on long delay checking table, connect three-phase 1.05 times of rated current, stablize and within 20 minutes, carry out the adjustment of dropout morning product, early threading off at this process product can to product adjustment.
4. on long delay checking table, connect 1.2 times of rated current actions 2 hours, can adjustment be carried out at this process product of not threading off.
4th embodiment of the inventive method comprises the steps:
1., before verifying after low-pressure electronic equipment product has been assembled, this low-voltage electrical apparatus machine product is connected three-phase main circuit 1.5 times of rated current and carries out complete machine aging 20 minutes.
2. complete machine is aging complete after complete machine cool 10 minutes and reset to product.
3. on long delay checking table, connect three-phase 1.05 times of rated current, stablize and within 30 minutes, carry out the adjustment of dropout morning product, early threading off at this process product can to product adjustment.
4. on long delay checking table, connect 1.2 times of rated current actions 30 minutes, can adjustment be carried out at this process product of not threading off.
Above-described embodiment is available to those of ordinary skill in the art to realize or uses of the present invention; those of ordinary skill in the art can be without departing from the present invention in the case of the inventive idea; various modifications or change are made to above-described embodiment; thus protection scope of the present invention not limit by above-described embodiment, and should be the maximum magnitude meeting the inventive features that claim is mentioned.Such as, above-mentioned 4 steps comprising complete machine burin-in process all can complete on long delay checking table, and the time of each step and the optimum choice of electric current can be determined by different product flexibly.
Claims (10)
1. there is the method that the low-voltage electrical apparatus complete machine of two golden structure is aging, comprise the following steps:
A), before verifying after low-pressure electronic equipment product has been assembled, this low-voltage electrical apparatus machine product being connected three-phase main circuit 1.2 ~ 6 times of rated current, to carry out complete machine aging;
B) complete machine is aging complete after complete machine be cooled to product reset;
C) connect three-phase 1.05 times of rated current and carry out adjustment of threading off morning, adjustment is carried out to dropout morning product in the process;
D) connect 1.2 times of rated current actions not thread off adjustment, adjustment is carried out to product of not threading off in the process.
2. the method that low-voltage electrical apparatus complete machine according to claim 1 is aging; it is characterized in that: described step complete machine burin-in process a) both can adopt automatic jig to complete on the automatic production line of final assembly, also can complete on the long delay checking table of the long delay protection electrical equipment effect for having two piece structure.
3. the method that low-voltage electrical apparatus complete machine according to claim 1 is aging, it is characterized in that: described step complete machine burin-in process electric current a) can reduce change from high power, described step c gradually) thread off time of adjustment morning be 20 minutes ~ 30 minutes.
4. the method that low-voltage electrical apparatus complete machine according to claim 1 is aging, is characterized in that: described step complete machine burin-in process electric current a) can reduce change gradually from high power, and constant multiple also can be adopted constant.
5. the method that low-voltage electrical apparatus complete machine according to claim 1 is aging, is characterized in that: described step complete machine burin-in process electric current a) is 1.3 times of rated current.
6. the method that low-voltage electrical apparatus complete machine according to claim 5 is aging, is characterized in that: described step complete machine ageing treatment time a) is 5 ~ 20 minutes.
7. the method that low-voltage electrical apparatus complete machine according to claim 1 is aging, is characterized in that: described step b) complete machine cooling time be 5 minutes.
8. the method that low-voltage electrical apparatus complete machine according to claim 1 is aging, is characterized in that: described step c) thread off time of adjustment morning be 20 minutes ~ 40 minutes.
9. method according to claim 1, is characterized in that: described steps d) time of adjustment of not threading off be 10 minutes ~ 2 hours.
10. method according to claim 1, it is characterized in that: described step complete machine burin-in process a) for continuing 10 minutes under electric current is 1.3 times of nominal current conditions, described step b) complete machine cooling time be 5 minutes, described step c) stabilization time be 20 minutes, described steps d) operate time be 10 minutes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510008314.0A CN104576227B (en) | 2015-01-07 | 2015-01-07 | There is pair aging method of the whole machine of the low-voltage electrical apparatus of gold structures |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510008314.0A CN104576227B (en) | 2015-01-07 | 2015-01-07 | There is pair aging method of the whole machine of the low-voltage electrical apparatus of gold structures |
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| CN104576227A true CN104576227A (en) | 2015-04-29 |
| CN104576227B CN104576227B (en) | 2017-03-15 |
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| CN201510008314.0A Active CN104576227B (en) | 2015-01-07 | 2015-01-07 | There is pair aging method of the whole machine of the low-voltage electrical apparatus of gold structures |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023035577A1 (en) * | 2021-09-07 | 2023-03-16 | 浙江正泰电器股份有限公司 | Delay characteristic check method for bimetallic switch, delay characteristic check method for relay, and system |
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| CN201382994Y (en) * | 2009-01-14 | 2010-01-13 | 河北工业大学 | Overload reliability test device for molded case circuit breaker |
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| JP4990589B2 (en) * | 2006-09-22 | 2012-08-01 | テンパール工業株式会社 | Setting method of circuit breaker operation reference current value using current value setting controller |
| CN103076794A (en) * | 2012-10-22 | 2013-05-01 | 奇瑞汽车股份有限公司 | Ageing testing system of motor controller and a testing method |
| CN203503566U (en) * | 2013-05-20 | 2014-03-26 | 温州大学 | Semi-automatic breaker time-delay calibration bench |
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2015
- 2015-01-07 CN CN201510008314.0A patent/CN104576227B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4990589B2 (en) * | 2006-09-22 | 2012-08-01 | テンパール工業株式会社 | Setting method of circuit breaker operation reference current value using current value setting controller |
| CN201382994Y (en) * | 2009-01-14 | 2010-01-13 | 河北工业大学 | Overload reliability test device for molded case circuit breaker |
| CN202110264U (en) * | 2011-06-15 | 2012-01-11 | 蒋正坤 | Monitoring device of aging of electrical element |
| CN103076794A (en) * | 2012-10-22 | 2013-05-01 | 奇瑞汽车股份有限公司 | Ageing testing system of motor controller and a testing method |
| CN203503566U (en) * | 2013-05-20 | 2014-03-26 | 温州大学 | Semi-automatic breaker time-delay calibration bench |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2023035577A1 (en) * | 2021-09-07 | 2023-03-16 | 浙江正泰电器股份有限公司 | Delay characteristic check method for bimetallic switch, delay characteristic check method for relay, and system |
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| CN104576227B (en) | 2017-03-15 |
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