CN204028278U - A kind of motor polarity proving installation - Google Patents
A kind of motor polarity proving installation Download PDFInfo
- Publication number
- CN204028278U CN204028278U CN201420461203.6U CN201420461203U CN204028278U CN 204028278 U CN204028278 U CN 204028278U CN 201420461203 U CN201420461203 U CN 201420461203U CN 204028278 U CN204028278 U CN 204028278U
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- polarity
- motor
- reometer
- cell device
- wire
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Abstract
A kind of motor polarity proving installation, this device comprises housing, is located at enclosure interior and mutual disconnected reometer and cell device, enclosure interior is provided with four of being electrically connected with the both positive and negative polarity of reometer and cell device respectively and draws wire, housing exterior walls is provided with the binding post be electrically connected with each extraction wire respectively, wherein, the extraction wire be connected with cell device is provided with on-off switch, and housing exterior walls is provided with and closes for controlling this on-off switch logical or disconnect the button of action.Each element is fixed on enclosure interior by this device, is easy to carry; The polarity of each separate middle lead-in wire of motor can be determined in use fast and accurately, ensure the accuracy of sense of rotation during machine operation, because of defects such as the device damage caused by motor reversal when avoiding work; This device only need by button press, by indicator swaying direction in display screen can judge connect the polarity organizing lead-in wire mutually, realize one man operation, improve detection efficiency.
Description
Technical field
The utility model relates to three-phase alternating current machine stator and holds polarity tester the whole story, specifically a kind of motor polarity proving installation.
Background technology
Three-phase current motor stator is made up of stator core and three-phase windings, after motor keeps in repair outside and returns factory, needs sense of rotation as requested to determine the polarity of each connection terminal of its three-phase windings.Because some load does not allow motor reverse rotation, as the boiler water circulating pump motor in generating plant does not just allow reverse rotation, this just must before motor charging operation, the corresponding annexation of motor winding and three-phase supply is determined according to the sense of rotation of load request, correct with proof load sense of rotation, this just requires the polarity just needing testing of electric motors before motor wiring.
Utility model content
The purpose of this utility model is to provide a kind of motor polarity proving installation, judges for carrying out test to the polarity of connection terminal uncertain in motor.
The technical scheme that the utility model is adopted for achieving the above object is: a kind of motor polarity proving installation, this device comprises housing, is located at enclosure interior and mutual disconnected reometer and cell device, enclosure interior is provided with four of being electrically connected with the both positive and negative polarity of reometer and cell device respectively and draws wire, housing exterior walls is provided with the binding post be electrically connected with each extraction wire respectively, wherein, the extraction wire be connected with cell device is provided with on-off switch, and housing exterior walls is provided with and closes for controlling this on-off switch logical or disconnect the button of action.
The housing of this device is provided with the display screen for showing reometer indicator, and the cell device adopted is accumulator.
Reometer, cell device are fixed on the insulcrete of enclosure interior setting by the utility model respectively, draw wire and be also fixed on insulcrete for four that are electrically connected with the both positive and negative polarity of reometer and cell device, the binding post that housing is arranged outward is convenient to be connected by the binding clip conducted electricity with motor down-lead.
Three-phase current motor stator is made up of stator core and U1/U2, V1/V2, W1/W2 three-phase windings, pass into electric current in arbitrary phase winding after, because the principle of electromagnetic induction can produce induction current in other closed winding.Electric current is passed in U1/U2 winding, if V1/V2(or W1/W2) winding close, can at winding V1/V2(or W1/W2) internal induction is to electric current, faradic direction can be judged according to right hand theorem, a corresponding reometer is sealed in winding closed-loop path, can see that ammeter pointer swings, the direction of the beat of pointer and sense of current.In actual use, because the every straight resistance mutually of motor winding is less, for avoiding big current to cause damage to motor winding, therefore adopt low-voltage small area analysis to pass into test winding, corresponding induction current is also less, and the utility model adopts 9V battery.
This proving installation in use, the binding post of corresponding cell device both positive and negative polarity is connected by the two ends of binding clip with the arbitrary phase in motor U1/U2, V1/V2, W1/W2 three-phase windings, the binding post be connected with reometer two ends is connected and is connected into the two ends of arbitrary phase in all the other two-phases, press the button that lower house is arranged, if in display screen the indicator of reometer be flapped toward negative electrode side to, then the motor down-lead that the motor down-lead that connects of cell device positive pole and reometer positive pole connect is same polarity; If the indicator of reometer is flapped toward positive extreme direction in display screen, then cell device negative pole to connect the motor down-lead that motor down-lead and reometer positive pole connect be same polarity.The like can test out the two ends polarity of an other phase.
Beneficial effect: 1, each element is fixed on enclosure interior by this device, is easy to carry; 2, the polarity of each separate middle lead-in wire of motor can be determined in use fast and accurately, ensure the accuracy of sense of rotation during machine operation, because of defects such as the device damage caused by motor reversal when avoiding work; 3, this device only need by button press, by indicator swaying direction in display screen can judge connect the polarity organizing lead-in wire mutually, realize one man operation, improve detection efficiency; 4, this apparatus structure is simple, existing equipment can be utilized to carry out repacking and use, be beneficial to popularization.
Accompanying drawing explanation
Fig. 1 is the outside drawing of this device;
Fig. 2 is the interior views of this device;
Fig. 3 is the fundamental diagram of this device.
Reference numeral: 1, housing, 2, reometer, 3, cell device, 4, draw wire, 5, binding post, 6, on-off switch, 7, button, 8, insulcrete, 9, display screen.
Embodiment
A kind of motor polarity proving installation as depicted in figs. 1 and 2, this device comprises housing 1, reometer 2 and cell device 3, reometer 2 and cell device 3 are all fixed on the insulcrete 8 of housing 1 inside setting, and reometer 2 is not communicated with mutually with cell device 3, housing 1 is provided with the display screen 9 for showing reometer indicator.As shown in Figure 2, housing 1 inside is provided with four of being electrically connected with the both positive and negative polarity of reometer 2 and cell device 3 respectively and draws wire 4, and housing 1 outer wall is as described in Figure 1 provided with four binding posts 5 of drawing wire 4 respectively with these four and being electrically connected.Wherein, the extraction wire be connected with cell device 3 is provided with on-off switch 6, and housing 1 outer wall is provided with and closes for controlling this on-off switch 6 or disconnect the button 7 of action.
This device, by all built-in with housing 1 to reometer 2, cell device 3, extraction wire 4 and on-off switch 6, make this proving installation easy to carry and use, can realize a people and operate separately, simple and convenient.Its manufacture method is simple, and cost is low, and onsite application effect is better, can promote the use of.
As shown in Figure 3, be the use principle figure of this proving installation.Connection principle as shown in Figure 3, motor down-lead to be measured is connected by binding clip correspondence with the binding post in this proving installation, after pressing the button 7, in motor winding W1/W2, induce current i 1 direction flow to W2 from W1, due to the principle of electromagnetic induction, current i 2 is induced in the U1/U2 of closed-loop path, when ammeter pointer positively biased, namely indicator is flapped toward the direction of "+", electric current flows to U2 from U1, the line end that then line end that connects of power cathode and reometer positive pole (+) connect is same polarity, can determine that W1 and U1 is homopolar end; When ammeter pointer is reverse-biased, namely indicator is flapped toward the direction of "-", then the line end that the line end that connects of positive source and reometer positive pole connect is same polarity, can determine that W1 and U2 is homopolar end.
Claims (4)
1. a motor polarity proving installation, it is characterized in that: this device comprises housing (1), be located at housing (1) inside and mutual disconnected reometer (2) and cell device (3), housing (1) inside is provided with four of being electrically connected with the both positive and negative polarity of reometer (2) and cell device (3) respectively and draws wire (4), housing (1) outer wall is provided with the binding post (5) be electrically connected with each extraction wire (4) respectively, wherein, the extraction wire be connected with cell device (3) is provided with on-off switch (6), housing (1) outer wall is provided with the button (7) closing for controlling this on-off switch (6) or disconnect action.
2. a kind of motor polarity proving installation according to claim 1, is characterized in that: described reometer (2) and cell device (3) are fixed on the insulcrete (8) of housing (1) inside setting.
3. a kind of motor polarity proving installation according to claim 1, is characterized in that: described cell device (3) is accumulator.
4. a kind of motor polarity proving installation according to claim 1, is characterized in that: described housing (1) is provided with the display screen (9) for showing reometer indicator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420461203.6U CN204028278U (en) | 2014-08-15 | 2014-08-15 | A kind of motor polarity proving installation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420461203.6U CN204028278U (en) | 2014-08-15 | 2014-08-15 | A kind of motor polarity proving installation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204028278U true CN204028278U (en) | 2014-12-17 |
Family
ID=52068120
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420461203.6U Expired - Fee Related CN204028278U (en) | 2014-08-15 | 2014-08-15 | A kind of motor polarity proving installation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204028278U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105807147A (en) * | 2016-05-10 | 2016-07-27 | 中广核工程有限公司 | Phase sequence testing method and device of three-phase asynchronous motor of nuclear power station |
-
2014
- 2014-08-15 CN CN201420461203.6U patent/CN204028278U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105807147A (en) * | 2016-05-10 | 2016-07-27 | 中广核工程有限公司 | Phase sequence testing method and device of three-phase asynchronous motor of nuclear power station |
| CN105807147B (en) * | 2016-05-10 | 2020-07-17 | 中广核工程有限公司 | Nuclear power station three-phase asynchronous motor phase sequence testing method and device |
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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 |
Granted publication date: 20141217 Termination date: 20180815 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |