CN103995213B - A kind of method differentiating motor winding polarity - Google Patents
A kind of method differentiating motor winding polarity Download PDFInfo
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- CN103995213B CN103995213B CN201410232413.2A CN201410232413A CN103995213B CN 103995213 B CN103995213 B CN 103995213B CN 201410232413 A CN201410232413 A CN 201410232413A CN 103995213 B CN103995213 B CN 103995213B
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Abstract
A kind of method differentiating motor winding polarity, comprises the following steps: applied the direct current of a certain electric pressure during detection on motor one phase winding by test loop；The inductive current direction that other two phase windings of motor induce is detected by the ammeter in the measure loop that two phase windings other with motor are connected；When utilizing ammeter detection induced-current, pointer can deflect to a direction, at the internal both forward and reverse directions of ammeter, one detection switch is respectively set, clash into detection switch shrapnel, detection switch Guan Bi conduction detection loop by ammeter pointer deflection, light indicator lamp in loop；Motor winding polarity is judged finally according to the indicator light colors lighted.It is wide that this method may select different brackets test voltage, detection range；Testing result is intuitively embodied by bright light color, reduces polarity misjudgment phenomenon；Two-way measure loop only needs people's operation once test just can complete the Check up polarity of motor three-phase windings simultaneously, and principle is simple, and test efficiency is higher.
Description
Technical field
The present invention relates to power system electrical installation project construction field, be specifically related to a kind of method differentiating motor winding polarity.
Background technology
In GB GB50150-2006 " electrical equipment commissioning test standard " the 6.0.10 article, the pilot project about ac motor specifies, when ac motor carries out debugging construction, should check the correctness of stator winding polarity and connection thereof.Commissioning staff, when debugging ac motor, there will be motor stator winding mark unclear in some cases, the situation that six connector lugs cannot clearly identify.Now it is accomplished by checking stator winding polarity, the mode of connection of mistake easily causes three-phase current unbalance, winding overheated, the most not only can not produce rotating excitation field, but also motor can be burnt, before the wiring carrying out motor cable, therefore be necessary also must distinguish the two ends of stator winding.
The method of existing judgement motor winding polarity is broadly divided into following two, all there is certain drawback:
(1) Traditional DC break-make detection method: complex operation, needs two testers to operate simultaneously, and easily causes battery pack short circuit, and tester coordinates the unskilled erroneous judgement easily causing winding polarity；
(2) alternating current method detection: need to repeatedly test the differentiation that just can complete motor three-phase windings polarity, and the required AC power of detection generally requires and is provided by outside, detection efficiency is the highest.
Summary of the invention
The technical problem to be solved in the present invention is, there is complex operation when motor winding polarity being differentiated for prior art, problem that detection efficiency is the highest, a kind of method differentiating motor winding polarity of practicality simple to operate is provided, use electric resistance partial pressure voltage regulating mode, coordinate detection switch detection by ammeter, and show result by indicator lamp.
The present invention solves that above-mentioned technical problem be the technical scheme is that
A kind of method differentiating motor winding polarity, comprises the following steps:
(1) at connecting test loop, the two ends output interface of a certain phase winding of motor, the external test loop of test loop output interface, connect I measure loop interface, II measure loop interface respectively at the two ends of other two phase windings of motor, described I measure loop interface, II measure loop interface external I measure loop, II measure loop respectively simultaneously；
Described test loop includes dc source, divider resistance R1, diode D, testing button SB1, divider resistance R2、R3、R4, shift gears knob XA, the cathode output end of dc source and divider resistance R1After connection, the positive pole with diode D is connected, the negative pole of diode D and testing button SB1One end be connected, testing button SB1The other end respectively with divider resistance R2One end, gearshift knob XA 1 terminal connect, divider resistance R2The other end respectively with divider resistance R3One end, gearshift knob XA 2 terminals connect, divider resistance R3The other end and divider resistance R4One end, 3 terminals of gearshift knob XA connect, COM terminal and the test loop output interface CA of gearshift knob XA1A end be connected, divider resistance R4The other end be connected to cathode output end and the test loop output interface CA of dc source1A' end；
Described I measure loop includes ammeter A1, detection switch S1、S2, DC relay K1、K2, indicator lamp L1、L2, SR SB2: ammeter A1+ pole and I measure loop interface CA2B end be connected, ammeter A1-pole and I measure loop interface CA2B' end be connected；Ammeter A1Internal both forward and reverse directions respectively arranges a detection switch S1、S2, detection switch S11 terminal and DC relay K1One end of normally opened point, DC relay K2Normally closed point one end connect, DC relay K2The other end and the DC relay K of normally closed point1Coil electrode, indicator lamp L1Positive pole connect, indicator lamp L1Negative pole and DC relay K1Coil negative pole, SR SB2One end, DC relay K2Coil negative pole, indicator lamp L2Negative pole be connected, SR SB2The other end and dc source-pole is connected, dc source+pole and DC relay K1Normally opened point the other end, detection switch S12 terminals, detection switch S22 terminals, DC relay K2Normally opened point one end connect, DC relay K2Normally opened point the other end with detection switch S21 terminal, DC relay K1Normally closed point one end connect, DC relay K1The other end and the DC relay K of normally closed point2Coil electrode, indicator lamp L2Positive pole be connected；Described indicator lamp L1、L2For different colours indicator lamp；
Described II measure loop includes ammeter A2, detection switch S3、S4, DC relay K3、K4, indicator lamp L3、L4, SR SB2: ammeter A2+ pole and II measure loop interface CA3C end be connected, ammeter A2-pole and II measure loop interface CA3C' end be connected；Ammeter A2Internal both forward and reverse directions respectively arranges a detection switch S3、S4, detection switch S31 terminal and DC relay K3One end of normally opened point, DC relay K4Normally closed point one end connect, DC relay K4The other end and the DC relay K of normally closed point3Coil electrode, 24V indicator lamp L3Positive pole connect, indicator lamp L3Negative pole and DC relay K3Coil negative pole, SR SB2Auxiliary one end of close point, DC relay K4Coil negative pole, indicator lamp L4Negative pole be connected, SR SB2The other end and the dc source of auxiliary close point-pole is connected, dc source+pole and DC relay K3Normally opened point the other end, detection switch S32 terminals, detection switch S42 terminals, DC relay K4Normally opened point one end connect, DC relay K4Normally opened point the other end with detection switch S41 terminal, DC relay K3Normally closed point one end connect, DC relay K3The other end and the DC relay K of normally closed point4Coil electrode, indicator lamp L4Positive pole be connected；Described indicator lamp L3、L4For different colours indicator lamp；
(2) on the corresponding phase winding that motor is coupled, applied the direct current of a certain test voltage grade during detection by test loop, detect, by the ammeter in I measure loop, II measure loop, the inductive current direction that other two phase windings of motor induce the most respectively；
(3) when utilizing ammeter detection induced-current, pointer can deflect to a direction, at I measure loop, the internal both forward and reverse directions of ammeter in II measure loop respectively arranges a detection switch, I measure loop, detection forward and reverse in II measure loop switchs the indicator lamp of a different colours of connecting respectively, the detection switch shrapnel in certain direction is clashed into by ammeter pointer deflection, the I measure loop of the detection switch Guan Bi conducting correspondence of the direction, II measure loop, and light indicator lamp (the i.e. I measure loop of correspondence direction, the indicator lamp connected with direction detection switch in II measure loop)；
(4) polarity of the motor winding being connected with I measure loop, II measure loop is judged according to the indicator light colors lighted.
By such scheme, described step (2) is the most further comprising the steps of: according to the equivalent no-load voltage ratio between tested motor capacity, winding before detection, selecting suitable test voltage grade by test loop, test voltage grade by multiple divider resistance dividing potential drops of test loop and is realized by gearshift knobs fit.
By such scheme, the method for described differentiation motor winding polarity specifically includes following steps:
(1) by test loop output interface CA1A, A ' end be wired to the two ends of U, U ' phase winding of motor, test loop output interface CA1External test loop, simultaneously by I measure loop interface CA2B, B ' end be wired to the two ends of V, V ' phase winding of motor, by II measure loop interface CA3C, C ' end be wired to the two ends of W, W ' phase winding of motor；I measure loop interface CA2, II measure loop interface CA3External I measure loop, II measure loop respectively；
(2) the testing button SB of test loop is pressed during detection1A direct current in short-term is applied to U, the U ' phase winding of motor, electric current is had to pass through on this phase winding of motor, magnetic flux increases, according to electromagnetic induction principle, induce the induced-current of a direction, the ammeter A of the I measure loop being connected with motor V, V ' phase winding according to the difference of inductance polarity on the other two-phase of motor i.e. V, V ' phase, W, W ' phase winding1, the ammeter A of II measure loop that is connected with motor W, W ' phase winding2Detect the inductive current direction of correspondence respectively；
(3) when utilizing ammeter detection induced-current, pointer can deflect to a direction, and the detection switch shrapnel clashing into ammeter certain direction interior makes it close, the I measure loop of conducting in a flash, II measure loop in Guan Bi, and light the indicator lamp of correspondence direction, DC relay action realizes the interlocking in loop and self-locking, it is ensured that indicator lamp be in always the electric state being lit；
(4) polarity of the motor winding being connected with I measure loop, II measure loop is judged according to the bright light situation of different colours indicator lamp: if observing indicator lamp L1With L3Bright, then U, V ', W ' are Same Name of Ends；If observing indicator lamp L1With L4Bright, then U, V ', W are Same Name of Ends；If observing indicator lamp L2With L3Bright, then U, V, W ' are Same Name of Ends；If observing indicator lamp L2With L4Bright, then U, V, W are Same Name of Ends.
By further comprising the steps of before such scheme, described step (2): according to the equivalent no-load voltage ratio between tested motor capacity, winding before detection, by the divider resistance R of test loop1、R2、R3、R4Dividing potential drop is also selected suitable test voltage grade (for realizing the voltage regulation function of test loop), described divider resistance R by gearshift knob XA1、R2、R3、R4It is respectively 90 Ω, 50 Ω, 50 Ω, the TO-220 type resistance of 50 Ω, 90 Ω+50 Ω+50 Ω+50 Ω=240 Ω, if disregarding the internal resistance of source, then major loop just 10 Ω dividing potential drop 1V, so often through one 50 Ω voltages rise 5V, thus 1 grade that obtains described gearshift knob XA export about 15V voltage, 2 grades export about 10V voltage, 3 grades export about 5V voltage.
By such scheme, the dc source in described test loop is XL110-6 24V 100Ah/20HR type direct-flow storage battery.
By such scheme, described indicator lamp L1、L3For AD37-16DS R BD type redness 24V signal lamp, indicator lamp L2、L4For AD37-16DS G BD type green 24V signal lamp.
By such scheme, described DC relay K1、K2、K3、K4For LY4N-J DC24 type 24V DC relay.
By such scheme, described ammeter A1、A2For 6X3-32X-A type ammeter.
The operation principle of the present invention: test loop is for applying a direct current in short-term on motor phase winding, and the function of test voltage grade dividing potential drop is realized by the divider resistance dividing potential drop of test loop and gearshift knob, I measure loop, II measure loop are used for detecting induced-current in corresponding phase motor winding and flow to and shown by indicator lamp.nullA direct current in short-term is applied to motor phase winding by test loop，Owing to there being electric current to pass through on this phase winding of motor，Magnetic flux increases，According to electromagnetic induction principle，Also the induced-current of a direction is induced on other two phase windings of motor，The I measure loop that two phase windings other with motor are respectively connected with、The ammeter of II measure loop makes pointer deflect to a direction by the faradic direction that detection is corresponding respectively，And the detection switch shrapnel clashing into ammeter built-in makes it close，Being switched on due to corresponding measure loop in a flash in Guan Bi，DC relay action realizes the interlocking in loop and auto-lock function，Ensure indicator lamp be in always the electric state being lit，By the bright light situation of different colours indicator lamp, operating personnel the most just can differentiate that the polarity of winding is the most identical，Thus realize the judgement to motor winding polarity.
The present invention compared with prior art, has a following major advantage:
1, detection range is wider, when the motor winding of different capabilities and electric pressure is detected, and can be according to the induction reactance of winding, the different choice test voltage grade of equivalence no-load voltage ratio；
2, reliability is higher, testing result can embody by the way of bright light more intuitively, increased the reliability of winding polarity testing result by different colours indicator lamp, reduce the polarity misjudgment phenomenon that Traditional DC break-make method is caused by human factor when detecting motor winding polarity；
3, method is more reasonable, and test voltage grade is realized voltage divide function by divider resistance dividing potential drop and gearshift knob, and due to resistance current limliting reason, and detection is short for conduction time, even if the pressure drop of winding self-resistance is the least after a period of time, also will not thus result in power supply short circuit problem；
4, two set measure loop only need people's operation once test just can complete the Check up polarity of motor three-phase windings simultaneously, and principle is simple, improves test efficiency.
Accompanying drawing explanation
Fig. 1 is embodiment of the present invention test principle block diagram；
Electrical block diagram when Fig. 2 is to test ac motor winding polarity in the embodiment of the present invention；
In figure, 10-test loop, 20-I measure loop, 30-II measure loop, BT battery；R1、R2、R3、R4Divider resistance；D diode；XA shifts gears knob；A1、A2Ammeter；S1、S2、S3、S4Detection switch；K1、K2、K3、K4DC relay；L1、L2、L3、L424V indicator lamp；SB1Testing button；SB2SR；CA1Test loop output interface；CA2I measure loop interface；CA3II measure loop interface.
Detailed description of the invention
The present invention is described in detail with embodiment below in conjunction with the accompanying drawings.
Shown in reference Fig. 1, the method differentiating motor winding polarity of the embodiment of the present invention, comprise the following steps:
(1) at connecting test loop, the two ends output interface of A phase winding (U, U ' phase in corresponding diagram 2) of motor, the external test loop of test loop output interface 10, B phase winding (V, V ' phase in corresponding diagram 2), the two ends of C phase winding (W, W ' phase in corresponding diagram 2) at motor connect I measure loop interface, II measure loop interface respectively simultaneously, described I measure loop interface, II measure loop interface external I measure loop 20, II measure loop 30 respectively；
(2) according to the equivalent no-load voltage ratio between tested motor capacity, winding before detection, selecting suitable test voltage grade by test loop 10, test voltage grade by multiple divider resistance dividing potential drops of test loop 10 and is realized by gearshift knobs fit；
(3) direct current applying a certain test voltage grade on motor A phase winding, the inductive current direction induced by the ammeter detection motor B phase winding in I measure loop 20, II measure loop 30, C phase winding the most respectively is given when detecting by test loop 10；
(4) when utilizing ammeter detection induced-current, pointer can deflect to a direction, at I measure loop 20, the internal both forward and reverse directions of ammeter in II measure loop 30 respectively arranges a detection switch, I measure loop 20, detection forward and reverse in II measure loop 30 switchs the indicator lamp of a different colours of connecting respectively, the detection switch shrapnel in certain direction is clashed into by ammeter pointer deflection, the I measure loop 20 of the detection switch Guan Bi conducting correspondence of the direction, II measure loop 30, and light indicator lamp (the i.e. I measure loop of correspondence direction, the indicator lamp connected with direction detection switch in II measure loop)；
(5) due in I measure loop 20, II measure loop 30 two indicator lamps of both forward and reverse directions be different colours indicator lamp, tester judges motor B phase winding, the polarity of C phase winding according to the indicator light colors lighted, and is increased the reliability of winding polarity testing result by different colours indicator lamp.
One preferred embodiment of the present invention is as in figure 2 it is shown, described test loop 10 includes battery BT, divider resistance R1, diode D, testing button SB1, divider resistance R2、R3、R4, shift gears knob XA, the cathode output end of battery BT and divider resistance R1After connection, the positive pole with diode D is connected, the negative pole of diode D and testing button SB1One end be connected, testing button SB1The other end respectively with divider resistance R2One end, gearshift knob XA 1 terminal connect, divider resistance R2The other end respectively with divider resistance R3One end, gearshift knob XA 2 terminals connect, divider resistance R3The other end and divider resistance R4One end, 3 terminals of gearshift knob XA connect, COM terminal and the test loop output interface CA of gearshift knob XA1A end be connected, divider resistance R4The other end be connected to cathode output end and the test loop output interface CA of battery BT1A' end；
Described I measure loop 20 includes ammeter A1, detection switch S1、S2, DC relay K1、K2, indicator lamp L1、L2, SR SB2: ammeter A1+ pole and I measure loop interface CA2B end be connected, ammeter A1-pole and I measure loop interface CA2B' end be connected；Ammeter A1Internal both forward and reverse directions respectively arranges a detection switch S1、S2, detection switch S11 terminal and DC relay K1One end of normally opened point, DC relay K2Normally closed point one end connect, DC relay K2The other end and the DC relay K of normally closed point1Coil electrode, indicator lamp L1Positive pole connect, indicator lamp L1Negative pole and DC relay K1Coil negative pole, SR SB2One end, DC relay K2Coil negative pole, indicator lamp L2Negative pole be connected, SR SB2The other end and battery BT-pole is connected, battery BT+pole and DC relay K1Normally opened point the other end, detection switch S12 terminals, detection switch S22 terminals, DC relay K2Normally opened point one end connect, DC relay K2Normally opened point the other end with detection switch S21 terminal, DC relay K1Normally closed point one end connect, DC relay K1The other end and the DC relay K of normally closed point2Coil electrode, indicator lamp L2Positive pole be connected that (24V direct-current LED indicator lamp is a resistance and the series connection of light emitting diode, and diode divides positive and negative so lamp also divides positive and negative；DC relay K1Coil in like manner)；
Described II measure loop 30 includes ammeter A2, detection switch S3、S4, DC relay K3、K4, indicator lamp L3、L4, SR SB2: ammeter A2+ pole and II measure loop interface CA3C end be connected, ammeter A2-pole and II measure loop interface CA3C' end be connected；Ammeter A2Internal both forward and reverse directions respectively arranges a detection switch S3、S4, detection switch S31 terminal and DC relay K3One end of normally opened point, DC relay K4Normally closed point one end connect, DC relay K4The other end and the DC relay K of normally closed point3Coil electrode, 24V indicator lamp L3Positive pole connect, indicator lamp L3Negative pole and DC relay K3Coil negative pole, SR SB2Auxiliary one end of close point, DC relay K4Coil negative pole, indicator lamp L4Negative pole be connected, SR SB2The other end and the battery BT of auxiliary close point-pole is connected, battery BT+pole and DC relay K3Normally opened point the other end, detection switch S32 terminals, detection switch S42 terminals, DC relay K4Normally opened point one end connect, DC relay K4Normally opened point the other end with detection switch S41 terminal, DC relay K3Normally closed point one end connect, DC relay K3The other end and the DC relay K of normally closed point4Coil electrode, indicator lamp L4Positive pole be connected；
Described indicator lamp L1、L3For AD37-16DS
R BD type redness 24V direct current signal lamp, indicator lamp L2、L4For AD37-16DS
G BD type green 24V direct current signal lamp.
With reference to Fig. 2 embodiment, the method for described differentiation motor winding polarity specifically includes following steps:
(1) by test loop output interface CA1A, A ' end be wired to the two ends of U, U ' phase winding of motor, test loop output interface CA1External test loop 10, simultaneously by I measure loop interface CA2B, B ' end be wired to the two ends of V, V ' phase winding of motor, by II measure loop interface CA3C, C ' end be wired to the two ends of W, W ' phase winding of motor；I measure loop interface CA2, II measure loop interface CA3External I measure loop 20, II measure loop 30 respectively；
(2) according to the equivalent no-load voltage ratio between tested motor capacity, winding before detection, by the divider resistance R of test loop 101、R2、R3、R4Dividing potential drop is also selected suitable test voltage grade (for realizing the voltage regulation function of test loop), described divider resistance R by gearshift knob XA1、R2、R3、R4It is respectively 90 Ω, 50 Ω, 50 Ω, the TO-220 type resistance of 50 Ω, 90 Ω+50 Ω+50 Ω+50 Ω=240 Ω, if disregarding the internal resistance of source, then major loop just 10 Ω dividing potential drop 1V, so often through one 50 Ω voltages rise 5V, thus 1 grade that obtains described gearshift knob XA export about 15V voltage, 2 grades export about 10V voltage, 3 grades export about 5V voltage；
(3) the testing button SB of test loop 10 is pressed during detection1A direct current in short-term is applied to U, the U ' phase winding of motor, electric current is had to pass through on this phase winding of motor, magnetic flux increases, according to electromagnetic induction principle, induce the induced-current of a direction, the ammeter A of the I measure loop 20 being connected with motor V, V ' phase winding according to the difference of inductance polarity on the other two-phase of motor i.e. V, V ' phase, W, W ' phase winding1, the ammeter A of II measure loop 30 that is connected with motor W, W ' phase winding2Detect the inductive current direction of correspondence respectively；
(4) when utilizing ammeter detection induced-current, pointer can deflect to a direction, and the detection switch shrapnel clashing into ammeter certain direction interior makes it close, the I measure loop of conducting in a flash 20, II measure loop 30 in Guan Bi, and light the indicator lamp of correspondence direction, DC relay action realizes the interlocking in loop and auto-lock function, it is ensured that indicator lamp be in always the electric state being lit；
(5) operating personnel judge the polarity of the motor winding being connected with I measure loop 20, II measure loop 30 according to the bright light situation of different colours indicator lamp: if observing indicator lamp L1With L3Bright, then U, V ', W ' are Same Name of Ends；If observing indicator lamp L1With L4Bright, then U, V ', W are Same Name of Ends；If observing indicator lamp L2With L3Bright, then U, V, W ' are Same Name of Ends；If observing indicator lamp L2With L4Bright, then U, V, W are Same Name of Ends.
As needed duplicate detection or detecting remaining motor winding polarity, SR SB can be pressed2Disconnection detection loop, and again detect according to above-mentioned steps (1) ~ (5).
In embodiment shown in Fig. 2, battery BT is XL110-6 24V 100Ah/20HR type direct-flow storage battery；DC relay K1、K2、K3、K4For LY4N-J
DC24 type 24V DC relay；Ammeter A1、A2For 6X3-32X-A type ammeter, ammeter can make the throw of pointer shock built-in shell fragment of ammeter make detection switching moments close by measure loop electric current, conduction detection loop, it is achieved Detection results；Ammeter A1、A2Only for detecting the I measure loop 20 of correspondence, the sense of current of II measure loop 30 and being not required to read current size, ammeter A1、A2The sensitiveest, the biggest then Detection results of throw of pointer dynamics is the best.
Above-described being only presently preferred embodiments of the present invention, the test loop in accompanying drawing 2 only makes reference, and is as the criterion adjustment with line of actual control road.Certainly the interest field that can not limit the present invention with this, therefore changes according to the equivalence that scope of the present invention patent is made, still belongs to protection scope of the present invention.It should be appreciated that for those of ordinary skills, can be improved according to the above description or be converted, and all these modifications and variations all should be belonged to the protection domain of claims of the present invention.
Claims (8)
1. the method differentiating motor winding polarity, it is characterised in that comprise the following steps:
(1) at connecting test loop, the two ends output interface of a certain phase winding of motor, the external test loop of test loop output interface, connect I measure loop interface, II measure loop interface respectively at the two ends of other two phase windings of motor, described I measure loop interface, II measure loop interface external I measure loop, II measure loop respectively simultaneously；
Described test loop includes dc source, divider resistance R1, diode D, testing button SB1, divider resistance R2、R3、R4, shift gears knob XA, the cathode output end of dc source and divider resistance R1After connection, the positive pole with diode D is connected, the negative pole of diode D and testing button SB1One end be connected, testing button SB1The other end respectively with divider resistance R2One end, gearshift knob XA 1 terminal connect, divider resistance R2The other end respectively with divider resistance R3One end, gearshift knob XA 2 terminals connect, divider resistance R3The other end and divider resistance R4One end, 3 terminals of gearshift knob XA connect, COM terminal and the test loop output interface CA of gearshift knob XA1A end be connected, divider resistance R4The other end be connected to cathode output end and the test loop output interface CA of dc source1A' end；
Described I measure loop includes ammeter A1, detection switch S1、S2, DC relay K1、K2, indicator lamp L1、L2, SR SB2: ammeter A1+ pole and I measure loop interface CA2B end be connected, ammeter A1-pole and I measure loop interface CA2B' end be connected；Ammeter A1Internal both forward and reverse directions respectively arranges a detection switch S1、S2, detection switch S11 terminal and DC relay K1One end of normally opened point, DC relay K2Normally closed point one end connect, DC relay K2The other end and the DC relay K of normally closed point1Coil electrode, indicator lamp L1Positive pole connect, indicator lamp L1Negative pole and DC relay K1Coil negative pole, SR SB2One end, DC relay K2Coil negative pole, indicator lamp L2Negative pole be connected, SR SB2The other end and dc source-pole is connected, dc source+pole and DC relay K1Normally opened point the other end, detection switch S12 terminals, detection switch S22 terminals, DC relay K2Normally opened point one end connect, DC relay K2Normally opened point the other end with detection switch S21 terminal, DC relay K1Normally closed point one end connect, DC relay K1The other end and the DC relay K of normally closed point2Coil electrode, indicator lamp L2Positive pole be connected；Described indicator lamp L1、L2For different colours indicator lamp；
Described II measure loop includes ammeter A2, detection switch S3、S4, DC relay K3、K4, indicator lamp L3、L4, SR SB2: ammeter A2+ pole and II measure loop interface CA3C end be connected, ammeter A2-pole and II measure loop interface CA3C' end be connected；Ammeter A2Internal both forward and reverse directions respectively arranges a detection switch S3、S4, detection switch S31 terminal and DC relay K3One end of normally opened point, DC relay K4Normally closed point one end connect, DC relay K4The other end and the DC relay K of normally closed point3Coil electrode, 24V indicator lamp L3Positive pole connect, indicator lamp L3Negative pole and DC relay K3Coil negative pole, SR SB2Auxiliary one end of close point, DC relay K4Coil negative pole, indicator lamp L4Negative pole be connected, SR SB2The other end and the dc source of auxiliary close point-pole is connected, dc source+pole and DC relay K3Normally opened point the other end, detection switch S32 terminals, detection switch S42 terminals, DC relay K4Normally opened point one end connect, DC relay K4Normally opened point the other end with detection switch S41 terminal, DC relay K3Normally closed point one end connect, DC relay K3The other end and the DC relay K of normally closed point4Coil electrode, indicator lamp L4Positive pole be connected；Described indicator lamp L3、L4For different colours indicator lamp；
(2) on the corresponding phase winding that motor is coupled, applied the direct current of a certain test voltage grade during detection by test loop, detect, by the ammeter in I measure loop, II measure loop, the inductive current direction that other two phase windings of motor induce the most respectively；
(3) when utilizing ammeter detection induced-current, pointer can deflect to a direction, the internal both forward and reverse directions of ammeter in I measure loop, II measure loop respectively arranges a detection switch, detection forward and reverse in I measure loop, II measure loop switchs the indicator lamp of a different colours of connecting respectively, the detection switch shrapnel in certain direction is clashed into by ammeter pointer deflection, the I measure loop of detection switch Guan Bi conducting correspondence of the direction, II measure loop, and light the indicator lamp of correspondence direction；
(4) polarity of the motor winding being connected with I measure loop, II measure loop is judged according to the indicator light colors lighted.
The method of differentiation motor winding polarity the most according to claim 1, it is characterized in that, described step (2) is the most further comprising the steps of: according to the equivalent no-load voltage ratio between tested motor capacity, winding before detection, selecting suitable test voltage grade by test loop, test voltage grade by multiple divider resistance dividing potential drops of test loop and is realized by gearshift knobs fit.
The method of differentiation motor winding polarity the most according to claim 1, it is characterised in that the method for described differentiation motor winding polarity specifically includes following steps:
(1) by test loop output interface CA1A, A ' end be wired to the two ends of U, U ' phase winding of motor, test loop output interface CA1External test loop, simultaneously by I measure loop interface CA2B, B ' end be wired to the two ends of V, V ' phase winding of motor, by II measure loop interface CA3C, C ' end be wired to the two ends of W, W ' phase winding of motor；I measure loop interface CA2, II measure loop interface CA3External I measure loop, II measure loop respectively；
(2) the testing button SB of test loop is pressed during detection1A direct current in short-term is applied to U, the U ' phase winding of motor, electric current is had to pass through on this phase winding of motor, magnetic flux increases, according to electromagnetic induction principle, induce the induced-current of a direction, the ammeter A of the I measure loop being connected with motor V, V ' phase winding according to the difference of inductance polarity on the other two-phase of motor i.e. V, V ' phase, W, W ' phase winding1, the ammeter A of II measure loop that is connected with motor W, W ' phase winding2Detect the inductive current direction of correspondence respectively；
(3) when utilizing ammeter detection induced-current, pointer can deflect to a direction, and the detection switch shrapnel clashing into ammeter certain direction interior makes it close, the I measure loop of conducting in a flash, II measure loop in Guan Bi, and light the indicator lamp of correspondence direction, DC relay action realizes the interlocking in loop and self-locking, it is ensured that indicator lamp be in always the electric state being lit；
(4) polarity of the motor winding being connected with I measure loop, II measure loop is judged according to the bright light situation of different colours indicator lamp: if observing indicator lamp L1With L3Bright, then U, V ', W ' are Same Name of Ends；If observing indicator lamp L1With L4Bright, then U, V ', W are Same Name of Ends；If observing indicator lamp L2With L3Bright, then U, V, W ' are Same Name of Ends；If observing indicator lamp L2With L4Bright, then U, V, W are Same Name of Ends.
The method of differentiation motor winding polarity the most according to claim 3, it is characterised in that further comprising the steps of before described step (2): according to the equivalent no-load voltage ratio between tested motor capacity, winding before detection, by the divider resistance R of test loop1、R2、R3、R4Dividing potential drop is also selected suitable test voltage grade, described divider resistance R by gearshift knob XA1、R2、R3、R4It is respectively 90 Ω, 50 Ω, 50 Ω, the TO-220 type resistance of 50 Ω, 1 grade of output 15V voltage of described gearshift knob XA, 2 grades of output 10V voltages, 3 grades of output 5V voltages.
The method of differentiation motor winding polarity the most according to claim 1, it is characterised in that the dc source in described test loop is XL110-6
24V 100Ah/20HR type direct-flow storage battery.
The method of differentiation motor winding polarity the most according to claim 1, it is characterised in that described indicator lamp L1、L3For AD37-16DS R BD type redness 24V signal lamp, indicator lamp L2、L4For AD37-16DS G BD type green 24V signal lamp.
The method of differentiation motor winding polarity the most according to claim 1, it is characterised in that described DC relay K1、K2、K3、K4For LY4N-J DC24 type 24V DC relay.
The method of differentiation motor winding polarity the most according to claim 1, it is characterised in that described ammeter A1、A2For 6X3-32X-A type ammeter.
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| CN109725231A (en) * | 2019-01-31 | 2019-05-07 | 潮州市汇能电机有限公司 | A kind of AC exciter armature coil polarity detector |
| CN111536864B (en) * | 2020-05-07 | 2021-08-24 | 郑州上电电机科技发展有限公司 | Central polarity correction circuit and portable correction instrument |
| CN117054935A (en) * | 2023-10-11 | 2023-11-14 | 云南建投技工学校 | Motor polarity testing method and device |
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