CN201177649Y - Automatic test equipment for temperature rising of winding - Google Patents
Automatic test equipment for temperature rising of winding Download PDFInfo
- Publication number
- CN201177649Y CN201177649Y CNU2007201967417U CN200720196741U CN201177649Y CN 201177649 Y CN201177649 Y CN 201177649Y CN U2007201967417 U CNU2007201967417 U CN U2007201967417U CN 200720196741 U CN200720196741 U CN 200720196741U CN 201177649 Y CN201177649 Y CN 201177649Y
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- moving contact
- temperature rise
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Abstract
The utility model relates to electronic element temperature rise test and provides an automatic winding temperature rise test device to solve the problems of the prior method such as unprecise result and difficult implementation. The automatic winding temperature rise test device comprises a power supply, a first winding connection terminal, a second winding connection terminal, an ohmmeter and a relay, wherein the relay comprises a static contact, a first moving contact, a second moving contact and a contact spring; the contact spring is connected with the second moving contact in an attraction state; the contact spring is connected with the first moving contact in a disconnection state; the first winding connection terminal is connected with one end of the power supply; the second winding connection terminal is connected with the static contact of the relay; the first moving contact of the relay is connected with the other end of the power supply; the second moving contact is connected with one end of the ohmmeter; and the other end of the ohmmeter is connected with the first winding connection terminal. The test results of the device have no difference, the device can be also used for measuring the instantaneous resistance of the winding when the power supply is disconnected, and the measurement result is more accurate. The device has the advantages of simple circuit structure, less elements and easy implementation.
Description
Technical field
The utility model relates to electronic component temperature rise measuring technology, more particularly, relates to a kind of winding temperature rise automatic testing equipment.
Background technology
The temperature rise of electronic component not only can influence the performance of element self, also can influence Electrical Safety.For this reason, all stipulated heating requirement in the security regulations of the electrical equipment of GB4706.1 and IEC60335-1 family expenses and similar applications to electronic component.
The method of testing of winding class device temperature rise at present mainly contains two kinds, and first kind is thermocouple method; Second kind is electric-resistivity method.In the process of using thermocouple method to test, selected test point difference, the result of test are just different, and the test result differences is very big, also are not suitable for the winding that package casing is arranged simultaneously.And traditional electric-resistivity method is after treating that power supply disconnects, and the resistance of winding had so just formed time-delay when testing experiment finished on being manually switched to ohmmeter, causes winding heat release cooling, and final result is exactly a test result utmost point out of true.
In addition, the structure of existing winding temperature rise proving installation is often too complicated, is difficult to realize.
Therefore, need a kind of winding temperature rise automatic test technology, can overcome that thermocouple method test result difference is big, electric-resistivity method test result out of true and proving installation complex structure, the defective that is difficult to realize.
The utility model content
The technical problems to be solved in the utility model is,, electric-resistivity method test result out of true big at prior art thermocouple method test result difference and proving installation complex structure, the defective that is difficult to realize provide a kind of winding temperature rise automatic testing equipment.
The technical scheme that its technical matters that solves the utility model adopts is: construct a kind of winding temperature rise automatic testing equipment, link to each other with power supply, comprise winding first link (302) and winding second link (304), also comprise: ohmmeter and relay, described relay comprise stationary contact, first moving contact, second moving contact and contact reed; Under attracting state, the contact reed links to each other with second moving contact; Under off-state, the contact reed links to each other with first moving contact; Winding first link links to each other with an end of power supply, and winding second link links to each other with the stationary contact of relay; First moving contact of relay links to each other with the other end of power supply, and second moving contact links to each other with an end of ohmmeter, and the other end of ohmmeter links to each other with winding first link.
In winding temperature rise automatic testing equipment described in the utility model, described power supply is an AC power.
In winding temperature rise automatic testing equipment described in the utility model, described relay is a solid-state relay.
In winding temperature rise automatic testing equipment described in the utility model, described relay is a photoelectrical coupler.
In winding temperature rise automatic testing equipment described in the utility model, also comprise the thermometer that is used to test room temperature.
Implement the technical solution of the utility model, have following beneficial effect: compare with thermocouple method, this programme is tested the temperature rise situation of whole winding, so test result not there are differences, and is applicable to the winding of package casing; Compare with electric-resistivity method, but this programme testing power supply disconnects the winding resistance value of moment, thereby the time-delay that produces is little, measurement result is more accurate.Simultaneously, the test circuit structure that this programme provides is simple, and the element consumption is few, therefore is easy to realize.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and Examples, in the accompanying drawing:
Fig. 1 is the structural representation of the utility model winding temperature rise automatic testing equipment.
Embodiment
The utility model provides a kind of winding temperature rise automatic testing equipment, can after outage, immediately the winding two ends be switched to the ohmmeter two ends, measuring the outage winding resistance value of moment, and then the temperature rise of calculating winding by the winding resistance value that records after the winding resistance value that records before switching on and the outage.Below the technical solution of the utility model is just described in conjunction with specific embodiments.
Fig. 1 is the structural representation of the utility model winding temperature rise automatic testing equipment.As shown in Figure 1, the winding temperature rise automatic testing equipment that provides of the utility model comprises ohmmeter 1, relay 2, winding first link 302 and winding second link 304.Relay 2 further comprises direct supply 200, switch 202, coil 204, stationary contact 206, first moving contact 208, second moving contact 210 and contact reed 212.
Winding first link 302 links to each other with the zero line (N) of alternating current, and winding second link 304 links to each other with the stationary contact 206 of relay 2.First moving contact 208 of relay 2 links to each other with the live wire (L) of alternating current, and second moving contact 210 links to each other with an end of ohmmeter 1, and the other end of ohmmeter 1 links to each other with winding first link 302.
In use, the two ends of winding 306 link to each other with winding second link 304 with winding first link 302 respectively.Before the test beginning, contact reed 212 connects second moving contact 210, ohmmeter 1 is connected respectively to the two ends of winding 306, therefore can record the initial resistance R1 of winding 306, needs simultaneously to use such as but not limited to thermometer to measure the preceding room temperature t1 of test beginning.Subsequently, with switch 202 closures of relay 2, make relay 2 adhesives, contact reed 212 connects first moving contact 208, and the two ends of winding 306 connect the live wire and the zero line of alternating current respectively, thus by alternating current to winding 306 power supplies.Measure when finishing, switch 202 is disconnected, make relay 2 disconnect, reed 212 automatic homings in contact are connected to second moving contact 210, and ohmmeter 1 is connected respectively to the two ends of winding 306 once more, therefore can record the final resistance R2 of winding 306, the room temperature t2 when needing to measure end of test (EOT) simultaneously.Resistance R2 after recording the resistance R1 of winding 306 before energising, energising, the room temperature t1 before the energising and switch on after room temperature t2 after, just can calculate the temperature rise Δ t of winding 306 by formula Δ t={ (R2-R1)/R1} (k+t1)-(t2-t1), wherein k is a constant, for the copper winding, k=234.5, for aluminium winding, k=225.
Because the moment that relay 2 disconnects, its contact reed 212 is playback immediately just, is connected to second moving contact 210, and so ohmmeter 1 just can be measured the final resistance R 2 of winding 306 immediately, and therefore the result who records is more accurate.If shorter to requiring switching time, relay 2 can substitute with solid-state relay or photoelectrical coupler.
It should be noted that above-described only is the preferred embodiment of the utility model winding temperature rise automatic testing equipment, and purpose is to tell about more clearly the principle of utility model technical scheme.Therefore, the technical solution of the utility model is not limited only to above-described content.For example, except that above-described alternating current, can also be direct current or the like to the power supply of winding 306 power supply.
This device to test be the temperature rise situation of whole winding 306, but not winding 306 certain a part of temperature rise situation, so test result not there are differences, and be applicable to the winding of package casing.Simultaneously, the test circuit structure that this programme provides is simple, and the element consumption is few, therefore is easy to realize.
Claims (5)
1, a kind of winding temperature rise automatic testing equipment, link to each other with power supply, comprise winding first link (302) and winding second link (304), it is characterized in that, also comprise: ohmmeter (1) and relay (2), described relay (2) comprise stationary contact (206), first moving contact (208), second moving contact (210) and contact reed (212); Contact reed (212) links to each other with second moving contact (210) under attracting state, under off-state, links to each other with first moving contact (208); Winding first link (302) links to each other with an end of power supply, and winding second link (304) links to each other with the stationary contact (206) of relay (2); First moving contact (208) of relay (2) links to each other with the other end of power supply, and second moving contact (210) links to each other with an end of ohmmeter (1), and the other end of ohmmeter (1) links to each other with winding first link (302).
2, winding temperature rise automatic testing equipment according to claim 1 is characterized in that, described power supply is an AC power.
3, winding temperature rise automatic testing equipment according to claim 1 is characterized in that, described relay (2) is a solid-state relay.
4, winding temperature rise automatic testing equipment according to claim 1 is characterized in that, described relay (2) is a photoelectrical coupler.
5, according to each described winding temperature rise automatic testing equipment among the claim 1-4, it is characterized in that, also comprise the thermometer that is used to test room temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201967417U CN201177649Y (en) | 2007-12-29 | 2007-12-29 | Automatic test equipment for temperature rising of winding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201967417U CN201177649Y (en) | 2007-12-29 | 2007-12-29 | Automatic test equipment for temperature rising of winding |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201177649Y true CN201177649Y (en) | 2009-01-07 |
Family
ID=40217672
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201967417U Expired - Fee Related CN201177649Y (en) | 2007-12-29 | 2007-12-29 | Automatic test equipment for temperature rising of winding |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201177649Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104483041A (en) * | 2014-12-25 | 2015-04-01 | 珠海格力电器股份有限公司 | Temperature rise measurement method and device of coil winding |
| CN104865443A (en) * | 2015-05-12 | 2015-08-26 | 株洲南车时代电气股份有限公司 | Automatic measurement system of motor hot resistance and work method thereof |
-
2007
- 2007-12-29 CN CNU2007201967417U patent/CN201177649Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104483041A (en) * | 2014-12-25 | 2015-04-01 | 珠海格力电器股份有限公司 | Temperature rise measurement method and device of coil winding |
| CN104865443A (en) * | 2015-05-12 | 2015-08-26 | 株洲南车时代电气股份有限公司 | Automatic measurement system of motor hot resistance and work method thereof |
| CN104865443B (en) * | 2015-05-12 | 2017-12-26 | 株洲南车时代电气股份有限公司 | The automatic measurement system and its method of work of motor hot resistance |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090107 Termination date: 20161229 |