CN207395916U - A kind of fixture for electric-resistivity method detection motor winding temperature rise - Google Patents
A kind of fixture for electric-resistivity method detection motor winding temperature rise Download PDFInfo
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- CN207395916U CN207395916U CN201721367259.5U CN201721367259U CN207395916U CN 207395916 U CN207395916 U CN 207395916U CN 201721367259 U CN201721367259 U CN 201721367259U CN 207395916 U CN207395916 U CN 207395916U
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Abstract
The utility model provides a kind of fixture for electric-resistivity method detection motor winding temperature rise, it is characterised in that：Including multigroup detection station and a pair of of resistance value calibrating terminal, multigroup detection station is electrically connected using parallel way in the two resistance value calibrating terminals, multigroup winding of motor is electrically connected in multigroup detection station, four binding posts and switch are respectively equipped in each detection station, power supply L poles, N poles and each winding both ends of motor are electrically connected in four binding posts, the utility model can quickly realize the switching of winding energization work and winding resistance value measurement, the time that winding is consumed down to reading resistance value is reduced, so as to greatly reduce measurement error；It adds in discharging function to shield to ohmmeter, the data of measurement is made to have more reference value.
Description
Technical field
The utility model is related to detection technique fields, refer in particular to a kind of fixture for electric-resistivity method detection motor winding temperature rise.
Background technology
Measurement of Motor Winding Temperature has thermocouple method and electric-resistivity method, and for motor winding temperature rise, electric-resistivity method is more accurate.
In household electrical appliance safety standard IEC 60335-1, to the Wen Sheng of machine winding, it is desirable that must be measured with winding method.Using
When winding method measures, motor room temperature t when detecting beginning is first measured1Corresponding resistance value R1, then allow motor work certain time,
It powers off again and measures its room temperature t in off-test2Resistance R2, then according to formula △ t=(R2-R1)/R1×(k+t1)-(t2-
t1) (wherein △ t represent winding temperature rise, for copper winding k=234.5), calculate winding temperature rise value.Resistance R during measurement2, it is necessary to
Deenergization line, it is also necessary to quick measurement, this in operation usually, it is necessary to two people's cooperations, and in actual measurement, people
The operation of member is easily slipped up, and when that cannot measure corresponding resistance value in time, and needs to open motor, and general electricity from new
Machine has several windings to need to measure Wen Sheng, every time because the problem of wiring, can only once measure one group of numerical value, after measurement, it is necessary to
Motor is reopened, then surveys the winding at another place, error is big, and operation is extremely troublesome.
Utility model content
In view of the above problems, the utility model provide it is a kind of for electric-resistivity method detection motor winding temperature rise fixture, one
Individual quickly can test multigroup winding of motor using electric-resistivity method, reduce artificial error, avoid detecting again,
Measurement error is small, and the data of measurement have more reference value.
To achieve these goals, the technical solution adopted in the utility model is as follows：
A kind of fixture for electric-resistivity method detection motor winding temperature rise, it is characterised in that：Including multigroup detection station and one
Multigroup detection station is electrically connected in group resistance value test port, the resistance value test port, and multigroup detection station difference is electrical
Multigroup winding of motor is connected, four binding posts and switch, four binding post difference are respectively equipped in each detection station
Power supply L poles, N poles and each winding both ends of motor are electrically connected, the switch is there are three position, when the switch is in first position
When (normal work), machine winding both ends are electrically connected power supply and the work that is powered, when the switch is in a second position, the motor
Winding both ends are disconnected with power supply, are also disconnected with resistance value test port, when a station, which is completed, to be needed to test next station,
The position switch is got into the second position, when switch is in the third place (electric-resistivity method), machine winding both ends are broken with power supply
It opens, machine winding both ends are electrically connected resistance value test port, are electrically connected discharge switch between resistance value test port, press electric discharge
Switch, winding can form closed loop circuit, realize electric discharge, are connected two table of ohmmeter with resistance value test port respectively after electric discharge, i.e.,
The resistance value of readable winding.
Preferably, insulating barrier is equipped between four binding posts prevents short circuit.
The utility model advantageous effect：
When the utility model detects, multigroup winding of motor is electrically connected on the binding post of the utility model in advance,
By switching the break-make situation come fast switch circuit, circuit switching can be quickly completed, avoids the difficulty of manual wiring, it can be with
The detection to the resistance of each winding in motor is completed in 3-4s, it is short to detect the required time, it is possible to be returned in the temperature of motor
Detection is completed when falling so that the data detected are more accurate, with more the value of reference, while using switch control, than original
Come by the way of later stage wiring, efficiency greatly improves, it is only necessary to which a people can just operate, and save human cost.
Description of the drawings
Fig. 1 is the structure diagram of the utility model；
Circuit diagram when Fig. 2 is the utility model detection motor；
1- motors, 2- discharge switches, 3- binding posts, 4- switches, 5- resistance value calibrating terminals, 6- insulating barriers.
Specific embodiment
The technical solution of the utility model is illustrated with embodiment below in conjunction with the accompanying drawings.
Such as Fig. 1 to Fig. 2, a kind of fixture for electric-resistivity method detection motor winding temperature rise, including multigroup detection station and one
To resistance value calibrating terminal 5, multigroup detection station, multigroup detection station difference is electrically connected in the two resistance value calibrating terminals 5
Multigroup winding of motor 1 is electrically connected, four binding posts 3 and a switch 4 are respectively equipped in each detection station, described in four
The both ends of power supply L poles, N poles and each winding of motor are electrically connected in binding post 3, and the switch 4 is opened there are three position when described
When closing 4 in first position (normal work), 1 winding both ends of motor are electrically connected power supply and simultaneously work, and 1 winding of motor starts to rise
Temperature, when switching 4 and being in the second position (intermediate OFF), the 1 winding both ends of motor and power supply disconnect, also with resistance value test lead
Mouthfuls 5 disconnect, and when a station, which is completed, to be needed to test next station, which is got to the second position, when opening
When closing 4 and being in the third place (electric-resistivity method), 1 winding both ends of motor are electrically connected resistance value test port 5, resistance value test port 5 it
Between be electrically connected discharge switch 2, press discharge switch 2,1 winding of motor can form closed loop circuit, electric discharge be realized, by electricity after electric discharge
Two table of resistance table is connected respectively with resistance value test port 5, you can the resistance value of reading winding.
Specifically, insulating barrier 6 is equipped between four binding posts 3 prevents short circuit.
During utility model works, switch 4 is first got to first position (normal work), the work of 1 winding of motor is allowed to go forward side by side
Row heating when time and state reach standard required value, gets to the third place (electric-resistivity method) switching 4, presses discharge switch 2
Electric discharge, two test pencil of ohmmeter is connected in resistance value test port 5 after electric discharge, and the resistance of a certain winding of motor 1 is detected.When
One station is completed when needing to test next station, which is got to the second position (intermediate OFF), this practicality
The new control by switch 4 is convenient and efficient come switching circuit, has saved human cost, meanwhile, measurement is accurate, with more ginseng
The value examined.
The embodiment of the utility model is described above in association with attached drawing, but the utility model be not limited to it is above-mentioned
Specific embodiment, above-mentioned specific embodiment is only schematical rather than restricted, the common skill of this field
Art personnel are not departing from the utility model aims and scope of the claimed protection situation under the enlightenment of the utility model
Under, many forms can be also made, these are belonged within the scope of protection of the utility model.
Claims (2)
1. a kind of fixture for electric-resistivity method detection motor winding temperature rise, it is characterised in that：Including multigroup detection station and a pair
Resistance value calibrating terminal, multigroup detection station is electrically connected using parallel way in the two resistance value calibrating terminals, multigroup described
Multigroup winding of motor is electrically connected in detection station, and four binding posts are respectively equipped in each detection station with switching, and four
Power supply L poles, N poles and each winding both ends of motor are electrically connected in a binding post, and the switch is there are three position, when described
When switch is in first position, the machine winding both ends are electrically connected power supply and the work that is powered；When switch is in the second position
When, the machine winding both ends are disconnected with power supply, and are disconnected with resistance value test port；It is described when switch is in the third place
Machine winding both ends are disconnected with power supply, and the machine winding both ends are electrically connected resistance value test port, the two resistance value test leads
A discharge switch both ends are electrically connected in mouth, open the discharge switch, and the machine winding can form closed loop circuit realization
Electric discharge.
2. a kind of fixture for electric-resistivity method detection motor winding temperature rise according to claim 1, it is characterised in that：Four
Insulating barrier is equipped between the binding post prevents short circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721367259.5U CN207395916U (en) | 2017-10-23 | 2017-10-23 | A kind of fixture for electric-resistivity method detection motor winding temperature rise |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721367259.5U CN207395916U (en) | 2017-10-23 | 2017-10-23 | A kind of fixture for electric-resistivity method detection motor winding temperature rise |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207395916U true CN207395916U (en) | 2018-05-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721367259.5U Active CN207395916U (en) | 2017-10-23 | 2017-10-23 | A kind of fixture for electric-resistivity method detection motor winding temperature rise |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207395916U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109115375A (en) * | 2018-10-22 | 2019-01-01 | 中国振华集团云科电子有限公司 | A kind of screening technique and screening system of thermistor |
-
2017
- 2017-10-23 CN CN201721367259.5U patent/CN207395916U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109115375A (en) * | 2018-10-22 | 2019-01-01 | 中国振华集团云科电子有限公司 | A kind of screening technique and screening system of thermistor |
| CN109115375B (en) * | 2018-10-22 | 2020-04-28 | 中国振华集团云科电子有限公司 | Screening method and screening system of thermistor |
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