CN207133416U - A kind of mutual inductor polarity test system - Google Patents

Abstract

A kind of mutual inductor polarity test system, including battery case, polarity indicator and polarity test circuit system；The primary side of to-be-tested transformer is connected with the battery case；The secondary side of to-be-tested transformer is connected with the polarity test circuit system；The polarity indicator includes positive triggering indicator lamp ZCF, reversely triggering indicator lamp FCF, positive polarity indicator lamp ZJX, reversed polarity indicator lamp FJX, power supply indicator PWR, hand resetting button F GS, delay involution button F GY, buzzer BJZ and double reading milliammeter；The positive triggering indicator lamp ZCF, reversely triggers indicator lamp FCF, positive polarity indicator lamp ZJX, and reversed polarity indicator lamp FJX, power supply indicator PWR, hand resetting button F GS, delay involution button F GY and double reading milliammeter are connected with polarity test circuit system.The utility model can meet one man operation or more people operation, have time-delay reset function, can judge the polarity of transformer rapidly by approach, operating personnel such as sound, luminous, pointer fixed deflections.

Description

A kind of mutual inductor polarity test system

Technical field

Test equipment technology is the utility model is related to, more particularly to a kind of mutual inductor polarity test system.

Background technology

In power system, the polarity test of transformer is extremely important, is to ensure protective relaying device correctly action and meter Measure the basic premise of device accurate measurement.For a long time, because the field condition of the polarity test of transformer is complicated, workload compared with Greatly, in the case of no professional polarity test instrument, it is difficult to which effective monitoring, security risk are larger.

Battery adds pointer direct current microampere meter to be common polarity test instrument.Battery is switched on or switched off transformer once Side moment, secondary side induce in short-term size and Orientation change alternating current, about tens microamperes.The reality that mutual inductor polarity differentiates Matter is waveform recognition, and microampere meter has no waveform recognition function, and identification work is mainly completed by operator.Due to direct current microampere Table can only detect direct current：When positive direction is powered, pointer is instantaneous " positively biased ", after current vanishes, pointer zero, it is impossible to keep； When opposite direction is powered, pointer " reverse-biased ", if the damping of selected meter is smaller, the pointer of " reverse-biased " clashes and can produced after grade pin Raw " positively biased ".Each polarity test operation all can produce a pair " positively biaseds " and " reverse-biased " in DC microammeter, if switch on or break The interval time for opening battery falls short of, and can not see clearly at all.

Deficiency existing for the method for this measurement polarity has：

1st, DC microammeter experience electric current it is less than normal when, throw of pointer amplitude is small, does not see Chu；DC microammeter is experienced " positively biased " illusion is caused when when electric current is bigger than normal, striking back " shelves pin " when pointer is reverse-biased suddenly, easily cause erroneous judgement, it is necessary to two and with Upper personnel, can normal operating；

2nd, test result can not be kept；

3rd, itself is without logic function, it is impossible to effectively identifies mutual inductor polarity；

4th, the test result that polarity instantaneously deflects, only actual operator know that other staff are difficult to be formed effectively Monitoring；

5th, it is troublesome in poeration, it is necessary to it is multiple measurement just can determine that polarity, easily there is mistake.

Conclusion：Polarity test work is extremely important, and the requirement to staff is higher.Battery adds the mutual inductance of DC microammeter Device polarity detection method, fallibility are big, it is difficult to which effectively monitoring, operating efficiency is not high, is not the polarity test instrument of specialty. Therefore, it is necessary to seek new detection method, the detection efficiency of mutual inductor polarity is improved.

Utility model content

The purpose of this utility model is overcome the deficiencies in the prior art, there is provided a kind of mutual inductor polarity test system. Technical scheme is used by the utility model solves its technical problem：A kind of mutual inductor polarity test system, including battery case, Polarity indicator and polarity test circuit system；The primary side of to-be-tested transformer is connected with the battery case；To-be-tested transformer Secondary side be connected with the polarity test circuit system；The polarity indicator includes positive triggering indicator lamp ZCF, reversely touched Send out indicator lamp FCF, positive polarity indicator lamp ZJX, reversed polarity indicator lamp FJX, power supply indicator PWR, hand resetting button F GS, prolong Shi Fugui button Fs GY, buzzer BJZ and double reading milliammeter；The positive triggering indicator lamp ZCF, reversely triggers indicator lamp FCF, positive polarity indicator lamp ZJX, reversed polarity indicator lamp FJX, power supply indicator PWR, hand resetting button F GS, delay involution are pressed Button FGY and double reading milliammeter are connected with polarity test circuit system；The polarity test circuit system includes function switch Unit, it is positive/negative to optocoupler unit, sound control unit and delay involution unit；The function switching unit for it is positive/negative to Optocoupler unit, sound control unit and delay involution unit provide power supply signal；Hand resetting button F GS and function switch list Member connection, double reading milliammeter, reversely positive triggering indicator lamp ZCF, triggering indicator lamp FCF, positive polarity indicator lamp ZJX and anti- Polarity indicator lamp FJX is connected with positive/negative to optocoupler unit, and buzzer BJZ is connected with sound control unit, and be delayed involution button FGY is connected with delay involution unit.

In the utility model, function switch switch is the throw switch of four knife three, there is three operating positions, corresponds to " instrument respectively Table ", " experiment ", " test " position.Corresponding " instrument " state in the throw switch SW1 of four knife three A1, B4, C7, D10 contact；Four knives three Corresponding " experiment " state in throw switch SW1 A2, B5, C8, D11 contact；The throw switch SW1 of four knife three A3, B6, C9, D12 contact Corresponding " test " state.At " instrument " position, the device can be used to as the D.C. voltmeter that a range is 10V Check whether the electric power of battery case is enough；At " experiment " position, it is connected with to-be-tested transformer, by battery case and polarity indicator By polarity identical mode and connect, open the power switch of polarity indicator, power supply indicator PWR is bright, presses opening for battery case Close button, it is possible to see that positive triggering indicator lamp ZCF flashes, positive polarity indicator lamp ZJX lamp Chang Liang, simultaneously bi-directionally milliampere Table positively biased, buzzer BJZ send single-tone, and last reversely triggering indicator lamp FCF flashes, and expression now wiring is positive polarity； Conversely, battery case and polarity indicator by opposite polarity and are connect, the ammonium button of battery case is pressed, then reversely triggers indicator lamp FCF Flash, reversed polarity indicator lamp FJX Chang Liang, simultaneously bi-directionally milliammeter is reverse-biased, and buzzer BJZ sends double-tone, last positive tactile Hair indicator lamp ZCF flashes, and expression now wiring is negative polarity, by hand resetting button F GS, then except power supply indicator PWR Outside, other indicator lamps go out, and double reading milliammeter returns to central zero-bit, and sound equipment stops；At " test " position, by battery case by corresponding Polarity be connected to the primary side of to-be-tested transformer, polarity indicator is connected to the corresponding secondary circuit of to-be-tested transformer, presses electricity Shift knob on the box of pond, so that it may obtain test result.The residing field working conditions of mutual inductor polarity test are often relatively more multiple Miscellaneous, therefore, the requirement to the reliability of test device is very high, therefore, except the optocoupler for using primary side reversely and connecing is as pole Property detecting element, eliminate electromagnetic interference outside, the utility model additionally uses 4 inter-related polarity indicate indicators：1. triggering Instruction, to observe trigger pulse electric current, green represents positive triggering, and red represents negative triggering；2. bidirectional, dc milliammeter indicates, It is just full inclined during positive polarity, it is negative full inclined during negative polarity, to correct unidirectional milliammeter when reversed polarity is tested the defects of " striker "；3. Lamplight pointing, green represent positive polarity, and red represents negative polarity；4. sound instruction, positive polarity is represented with single-tone, double-tone represents Negative polarity.This 4 production indicate indicators that are closely connected, are not only able to prevent operating personnel from misunderstanding, moreover it is possible to facilitate the prison of care provider Superintend and direct, improve the reliability of device.In addition, the device adds delay reset function, it can not only extend battery, When human hand is inadequate, 1 people can also complete the polarity test work of transformer, improve operating efficiency.

Preferably, the function switching unit includes function switch switch, experiment transformer and electronic switch U7；It is described Function switch switch is the throw switch SW1 of four knife three；The throw switch SW1 of four knife three A contacts are the first movable contact, corresponding A 1, A2, Tri- stationary contacts of A3；The throw switch SW1 of four knife three B contact is the second movable contact, tri- stationary contacts of corresponding B4, B5, B6；Four knives three Throw switch SW1 C contacts are the 3rd movable contact, tri- stationary contacts of corresponding C7, C8, C9；The throw switch SW1 of four knife three D contacts are 4th movable contact, tri- stationary contacts of corresponding D11, D12, D13；The primary side first end S1 and the throw switch of four knife three of to-be-tested transformer SW1 A contact portions；；Primary side the second end S2 of to-be-tested transformer is connected with the throw switch SW1 of four knife three B contact；A2 contacts It is connected with the polar end for testing transformer primary side, tests the non-polar end and B5 contact portions of transformer primary side；Experiment is mutual The polar end of sensor secondary side and C8 contact portions, export optocoupler positive signal；A3 contacts and C9 contact portions；C7 contacts and D10 Contact is vacant；The non-polar end and B6 contact portions of experiment transformer secondary side simultaneously export optocoupler negative signal；D11 contacts and D12 Contact, electronic switch U7：C the 3rd terminal connection, exports positive power signal；Electronic switch U7：C the 4th terminal and hand resetting Button F GS first end connection, hand resetting button F GS the second end output hand resetting signal；Electronic switch U7：The of C 5 terminals output delay slot signal.

Preferably, the sound control unit includes：Electronic switch U7, diode D5-D7, and resistance R12-R13； The electronic switch U7：A 13 terminal receptions are from the positive/negative negative polarity power-on reset signal to optocoupler unit, electronics Switch U7：A 1 terminal is connected with diode D7 negative pole, diode D7 positive pole and resistance R13 first end, phase inverter U6： C 5 terminals connection, phase inverter U6：C 6 terminals and resistance R12 first end, phase inverter U6：D 13 terminals connection, it is anti-phase Device U6：D 12 terminals are connected with electric capacity C3 first end, electric capacity C3 the second end and diode D5 positive pole, electronic switch U7：A 2 terminals, resistance R13 the second end, resistance R12 the second end, buzzer BJZ first end are connected and are grounded；Two poles Pipe D5 negative pole is connected with buzzer BJZ the second end, diode D6 negative pole, diode D6 positive pole and electronic switch U7：B 10 terminals connection, electronic switch U7：B 12 terminal receptions are from the positive/negative positive polarity electrification reset to optocoupler unit Signal, electronic switch U7：Positive power signal of B 11 terminal receptions from the function switching unit.

It is preferably, described positive/negative to optocoupler unit, including optocoupler U3-U4, electronic switch U5, phase inverter U6, triode Q1-Q4, resistance R1-R11, diode D1-D4, electric capacity C1-C2 and controllable silicon U1-U2；The function switching unit output Optocoupler positive signal is connected with optocoupler U3 1 terminal, optocoupler U4 2 terminals, the optocoupler negative signal of the function switching unit output 1 terminal of 2 terminals, optocoupler U4 with optocoupler U3 is connected；Optocoupler U3 5 terminals are referred to by resistance R2 and positive power signal, power supply Show lamp PWR first ends, positive triggering indicator lamp ZCF first ends, resistance R5 first ends, reversely resistance R9 first ends, triggering instruction Lamp FCF first ends, the connection of resistance R6 first ends；Optocoupler U3 5 terminals and triode Q1 colelctor electrode and triode Q2 base Pole connects；Optocoupler U3 4 terminals are connected with triode Q1 base stage, triode Q1 emitter stage and electronic switch U5：A 1 end Son, electronic switch U5：B 11 terminals connection；Electronic switch U5：B 12 terminals and phase inverter U6：B 4 terminals connection；Power supply The ends of indicator lamp PWR second are grounded by resistance R1；Launched by resistance R3 and triode Q2 at forward direction triggering the second ends of indicator lamp ZCF Pole connects；Electronic switch U5：A 13 terminals and the ends of resistance R9 second, phase inverter U6：B 3 terminals, diode D3 positive pole with And electric capacity C2 first end connection, output negative pole power-on reset signal；Electronic switch U5：A 2 terminals and diode D1 are just Pole is connected, and diode D1 negative pole is connected with controllable silicon U1 control pole, and controllable silicon U1 anode passes through positive polarity indicator lamp ZJX and diode D2 negative pole, the ends of resistance R4 second are connected；Diode D2 positive pole and resistance R5 the second end, phase inverter U6：A 1 terminal, electronic switch U5：The first end connection of C 5 terminals and electric capacity C1 and output cathode electrification reset letter Number；Phase inverter U6：A 2 terminals and electronic switch U5：D 6 terminals connection and output cathode control signal；The function is cut The hand-reset signal for changing unit output is connected with resistance R4 first ends, resistance R8 first ends；The ends of resistance R4 second and A1 contacts, The positive pole connection of double reading milliammeter, the negative pole of double reading milliammeter is connected with resistance R10 first end, resistance R10 the second end and B4 contacts, resistance R11 first end connection；Resistance R11 the second end and resistance R8 the second end, diode D3 negative pole, anti- Polarity indicator lamp FJX first end connection；Reversed polarity indicator lamp FJX the second end is connected with controllable silicon U2 anodes, controllable silicon U2 Control pole is connected with diode D4 negative pole, diode D4 positive pole and electronic switch U5：C 3 terminals connection；Electronic switch U5：C 4 terminals and electronic switch U5：The emitter stage connection of D 8 terminals, triode Q4；Triode Q4 base stage and optocoupler U4 4 terminals connection；Optocoupler U4 5 terminals and the base stage at resistance R6 the second end, triode Q4 colelctor electrode and triode Q3 Connection；Triode Q3 emitter stage is connected by resistance R7 with reversely triggering indicator lamp FCF the second end；Electronic switch U5：B 10 terminals and triode Q2 colelctor electrode, controllable silicon U1 negative electrode, electric capacity C1 the second end, electric capacity C2 the second end, three poles Pipe Q3 colelctor electrode, controllable silicon U2 negative electrodes and electronic switch U5：D 9 terminals are connected and are grounded.

Preferably, the delay involution unit includes：Diode D8-D12, resistance R14-R15 and electric capacity C4；It is described Diode D9 negative pole is received from the positive/negative negative polarity power-on reset signal to optocoupler unit, diode D8 negative pole Receive from the positive/negative positive polarity power-on reset signal to optocoupler unit, diode D9 positive pole and diode D8 are just Pole, phase inverter U6：E 11 terminals connection, phase inverter U6：E 10 terminals are connected with diode D10 negative pole, diode D10's Positive pole and resistance R14 first end, electric capacity C4 first end, diode D11 anode and phase inverter U6：F 9 terminals connect Connect, phase inverter U6：Delayed reset signal of F 8 terminal receptions from the function switching unit；Resistance R14 the second end with Diode D12 positive pole connection, is received from the positive/negative positive power signal to optocoupler unit；Diode D12 negative pole with Resistance R15 first end connection, resistance R15 the second end and the first end of diode D11 negative pole, delay involution button F GY Connection, delay involution button F GY the second end are connected and are grounded with electric capacity C4 the second end.

The beneficial effects of the utility model：Mutual inductor polarity test system mutual inductor polarity designed by the utility model is surveyed Test system mutual inductor polarity test system：(1) one man operation or more people operation can be met；(2) there is time-delay reset function, test As a result can keep；(3) instrument has logic function in itself, can effectively identify the polarity of transformer；(4) by sound, light, refer to The approach such as pin fixed deflection, operating personnel can judge the polarity of transformer rapidly, form effectively monitoring；Staff on the scene can Know immediately that the result of polarity test, can realize effectively monitoring, contribute to operating personnel by energy be placed on secondary circuit correctness, On integrity checking, operating efficiency is substantially increased；(5) using photoelectrical coupler creatively as the biography of mutual inductor polarity test Sensor, hence it is evident that improve the efficiency of mutual inductor polarity test.

Brief description of the drawings

Fig. 1 is a kind of battery case with button switch of the present utility model；

Fig. 2 is a kind of panel schematic diagram of polarity indicator of the present utility model；

Fig. 3 is a kind of function switching unit circuit diagram of the present utility model；

Fig. 4 is that one kind of the present utility model is positive/negative to optocoupler element circuit；

Fig. 5 is a kind of sound control unit circuit of the present utility model；

Fig. 6 is a kind of involution element circuit that is delayed of the present utility model.

Embodiment

Below by specific embodiment, and with reference to accompanying drawing, the technical solution of the utility model is made further specifically It is bright.

A kind of mutual inductor polarity test system, including experiment transformer TR1, battery case, polarity indicator and polarity are surveyed Test system circuit.

Battery case, as shown in figure 1, battery case carries shift knob, button switch being capable of normalizing operation：Not only eliminate hand Shake during dynamic overlap joint to-be-tested transformer, extend the life-span of battery, moreover it is possible to the operation " fixation " for overlapping testing crew is got off, had Beneficial to the polarity of analysis to-be-tested transformer, operating efficiency is improved.

Polarity indicator, as shown in Fig. 2 positive triggering indicator lamp ZCF, reversely triggering indicator lamp FCF, positive polarity indicator lamp ZJX, reversed polarity indicator lamp FJX, power supply indicator PWR, hand resetting button F GS, delay involution button F GY, buzzer BJZ with And double reading milliammeter；The positive triggering indicator lamp ZCF, reversely triggers indicator lamp FCF, positive polarity indicator lamp ZJX, reversed polarity Indicator lamp FJX, power supply indicator PWR, hand resetting button F GS, delay involution button F GY and double reading milliammeter are and polarity Test system circuit connects；The polarity test circuit system includes function switching unit, positive/negative to optocoupler unit, sound control Unit processed and delay involution unit；The function switching unit is positive/negative to optocoupler unit, sound control unit and delay Involution unit provides power supply signal；Hand resetting button F GS is connected with function switching unit, and double reading milliammeter, positive triggering refer to Show lamp ZCF, reversely triggering indicator lamp FCF, positive polarity indicator lamp ZJX and reversed polarity indicator lamp FJX with it is positive/negative to optocoupler unit Connection, buzzer BJZ are connected with sound control unit, and delay involution button F GY is connected with delay involution unit；To-be-tested transformer Primary side be connected with the shift knob；The secondary side of to-be-tested transformer is connected with the function switching unit；The experiment Transformer TR1 is connected with function switching unit.

The operation principle of polarity indicator, by taking " test " position as an example, when the induced-current of experiment transformer TR1 secondary sides When flowing to S2 from S1, positive optocoupler conducting, positive couple current " amplification ", " positive triggering instruction " is glittering, and now positive locking is opened Conducting is closed, through " state holding ", and passes through the path of " reverse locking " switch cutoff backlight coupling signal, " positive polarity instruction " lamp It is bright, " double reading milliammeter " positively biased, buzzer bill sound.Because " reverse locking " has switched off the passage of negative polarity instruction, because This, subsequent negative half-wave can only make " negative triggering instruction " lamp flicker once, not influence Check up polarity result before this, finally, can Be delayed involution after hand resetting, or 1 minute.Conversely, when the induced-current for testing transformer TR1 secondary sides flows to S1 from S2, Reverse optocoupler conducting, reverse coupled electric current " amplification ", " negative triggering " action, now reverse latch switch conducting, therefore reversely letter Number warp " state holding ", and by the path of " reverse locking " switch cutoff forward direction optocoupler signal, " negative polarity instruction " lamp is bright, " double reading milliammeter " is reverse-biased, and 20Hz low-frequency oscillators action, modulation 1kHz high-frequency generators make buzzer send out double-tone.Due to " just To locking " passage that positive polarity indicates has been switched off, therefore, subsequent positive half-wave can only make " positive triggering instruction " lamp flicker one It is secondary, Check up polarity result before this is not influenceed, and finally, can be delayed after hand resetting, or 1 minute involution.

Function switching unit, as shown in figure 3, the function switching unit includes function switch switch, electronic switch U7；Institute It is the throw switch SW1 of four knife three to state function switch switch；The throw switch SW1 of four knife three A contacts are the first movable contact, corresponding A 1, Tri- stationary contacts of A2, A3；The throw switch SW1 of four knife three B contact is the second movable contact, tri- stationary contacts of corresponding B4, B5, B6；Four The throw switch SW1 of knife three C contacts are the 3rd movable contact, tri- stationary contacts of corresponding C7, C8, C9；The throw switch SW1 of four knife three D is touched Point is the first movable contact, tri- stationary contacts of corresponding D11, D12, D13；The first input end S1 of the polarity tester and four knives three Throw switch SW1 A contact portions；The the second input S2 and the throw switch SW1 of four knife three of the polarity tester B contact connect Connect；A2 contacts are connected with testing the polar end of transformer TR1 primary sides, test the non-polar end and B5 of transformer TR1 primary sides Contact portion；The polar end and C8 contact portions of transformer TR1 secondary sides are tested, exports optocoupler positive signal；Touched with C9 A3 contacts Point connection；C7 contacts and D10 contacts are vacant；Test the non-polar end and B6 contact portions and output light of transformer TR1 secondary sides Coupling negative signal；D11 contacts and D12 contacts, electronic switch U7：C the 3rd terminal connection, exports positive power signal；Electronic switch U7：C the 4th terminal is connected with hand resetting button F GS first end, and hand resetting button F GS the second end output is multiple manually Return signal；Electronic switch U7：C the 5th terminal output delay slot signal.

Induced-current flows to S2, it is specified that being positive polarity from input S1, otherwise is negative polarity.

(1) when switching switch and switching to " instrument " position, input S1 by SW1 A1 to m+, then from milliammeter m- by B4 returns to input 2, and at this moment indicator is just configured to the bidirectional DC voltage table that a range is 10V.

(2) when switching switch switches to " experiment " position, positive polarity electric current passes through A2 to experiment transformer from input S1 TR1 positive ends, the negative polarity end for flowing out TR1 return to input S2 by B5；The output polarity end electric current that examination becomes TR1 leads to from C8 Cross the non-polar end that optocoupler U3 returns to experiment transformer TR1；The negative polarity sense of current leads on the contrary, becoming TR1 from examination to non-polar end Optocoupler U4 is crossed, examination change TR1 polar end is returned to by C8.

(3) when switching switch and switching to " test " position, positive polarity electric current passes through SW1 A3, C9 to light from input S1 Coupling U3, input S2 is finally returned to by B6；B6, optocoupler U4, the C9 of anti-polarity current from input S2 by SW1, finally by A3 Return to input S1.

It is positive/negative to optocoupler unit, as shown in figure 4, including optocoupler U3-U4, electronic switch U5, phase inverter U6, triode Q1-Q4, resistance R1-R11, diode D1-D4, electric capacity C1-C2 and controllable silicon U1-U2；The function switching unit output Optocoupler positive signal is connected with optocoupler U3 1 terminal, optocoupler U4 2 terminals, the optocoupler negative signal of the function switching unit output 1 terminal of 2 terminals, optocoupler U4 with optocoupler U3 is connected；Optocoupler U3 5 terminals are referred to by resistance R2 and positive power signal, power supply Show lamp PWR first ends, positive triggering indicator lamp ZCF first ends, resistance R5 first ends, reversely resistance R9 first ends, triggering instruction Lamp FCF first ends, the connection of resistance R6 first ends；Optocoupler U3 5 terminals and triode Q1 colelctor electrode and triode Q2 base Pole connects；Optocoupler U3 4 terminals are connected with triode Q1 base stage, triode Q1 emitter stage and electronic switch U5：A 1 end Son, electronic switch U5：B 11 terminals connection；Electronic switch U5：B 12 terminals and phase inverter U6：B 4 terminals connection；Power supply The ends of indicator lamp PWR second are grounded by resistance R1；Launched by resistance R3 and triode Q2 at forward direction triggering the second ends of indicator lamp ZCF Pole connects；Electronic switch U5：A 13 terminals and the ends of resistance R9 second, phase inverter U6：B 3 terminals, diode D3 positive pole with And electric capacity C2 first end connection, output negative pole power-on reset signal；Electronic switch U5：A 2 terminals and diode D1 are just Pole is connected, and diode D1 negative pole is connected with controllable silicon U1 control pole, and controllable silicon U1 anode passes through positive polarity indicator lamp ZJX and diode D2 negative pole, the ends of resistance R4 second are connected；Diode D2 positive pole and resistance R5 the second end, phase inverter U6： A 1 terminal, electronic switch U5：C 5 terminals and electric capacity C1 first end connection and output cathode power-on reset signal；Instead Phase device U6：A 2 terminals and electronic switch U5：D 6 terminals connection and output cathode control signal；The function switch list The hand-reset signal of member output is connected with resistance R4 first ends, resistance R8 first ends；It is the ends of resistance R4 second and A1 contacts, two-way The positive pole connection of milliammeter, the negative pole of double reading milliammeter are connected with resistance R10 first end, and resistance R10 the second end and B4 are touched The first end connection of point, resistance R11；Resistance R11 the second end and resistance R8 the second end, diode D3 negative pole, reversed polarity Indicator lamp FJX first end connection；Reversed polarity indicator lamp FJX the second end is connected with controllable silicon U2 anodes, controllable silicon U2 controls Pole is connected with diode D4 negative pole, diode D4 positive pole and electronic switch U5：C 3 terminals connection；Electronic switch U5：C's 4 terminals and electronic switch U5：The emitter stage connection of D 8 terminals, triode Q4；Triode Q4 base stage and optocoupler U4 4 terminals Connection；Optocoupler U4 5 terminals are connected with the base stage at resistance R6 the second end, triode Q4 colelctor electrode and triode Q3；Three Pole pipe Q3 emitter stage is connected by resistance R7 with reversely triggering indicator lamp FCF the second end；Electronic switch U5：B 10 terminals The negative electrode of colelctor electrode, controllable silicon U1, electric capacity C1 the second end, electric capacity C2 the second end, triode Q3 collection with triode Q2 Electrode, controllable silicon U2 negative electrodes and electronic switch U5：D 9 terminals are connected and are grounded.

Positive photoelectric coupled circuit forms multiple tube by optocoupler U3, triode Q1, and the experiment transformer TR1 that amplification detection arrives is just To induced current, all the way to triode Q2, make positive triggering indicator lamp ZCF bright, all the way to electronic switch U5：A, pass through diode Reason D1 makes controllable silicon U1 conductings and self-sustaining, plays 4 effects：1st, make positive polarity indicator lamp ZJX bright；2nd, double reading milliammeter is being just Partially；3rd, turn on D2 Clamp-on positions, make U5：C electronic switches turn off, locking reversed polarity instruction loop, while U6：A output high level point Two tunnels, make U5 all the way：D electronic switches turn on, and get out reverse trigger circuit, two tunnels make electronic switch U7：B is turned on, and makes buzzing Device BUZ sends single-tone.

Reverse photoelectric coupled circuit forms multiple tube by optocoupler U4, triode Q4, and the experiment transformer TR1's that amplification detection arrives is anti- To induced current, all the way to triode Q3, reversely triggering is set to indicate that FCF lamps are bright, another way to electronic switch U5：C, pass through two poles Management D4 makes controllable silicon U2 conductings and self-sustaining, plays 4 effects：1st, make reversed polarity instruction FJX lamps bright；2nd, double reading milliammeter is anti- Partially；3rd, turn on D3 Clamp-on positions, make U5：A electronic switches turn off, locking positive polarity instruction loop, while U6：A output high level point Two tunnels, make U5 all the way：D electronic switches turn on, and get out reverse trigger circuit, two tunnels make electronic switch U7：A is turned on, and makes U6： C、U6：The multivibrator that the frequency of D compositions is 20Hz works, and buzzer BUZ is sent double-tone.

It is positive/negative to optocoupler unit：(1) polarity indicating circuit is made up of positive indicating circuit and reverse indicating circuit.Wherein, Positive indicating circuit is made up of positive photoelectric coupled circuit, positive holding circuit, positive exclusive circuit etc.；Reverse indicating circuit is by reverse Photoelectric coupled circuit, reverse protection circuit, reverse exclusive circuit etc. form.Positive photoelectric coupled circuit is made up of multiple optocoupler U3, triode Q1 Pipe is closed, the positive induced current for the experiment transformer TR1 that amplification detection arrives, all the way to triode Q2, makes positive triggering indicator lamp ZCF is bright, all the way to electronic switch U5：A, managing D1 by diode makes controllable silicon U1 conductings and self-sustaining, plays 4 effects：1、 Make positive polarity indicator lamp ZJX bright；2nd, double reading milliammeter positively biased；3rd, turn on D2 Clamp-on positions, make U5：C electronic switches turn off, and locking is anti- Polarity indicates loop, while U6：Two tunnels of A output high level point, make U5 all the way：D electronic switches turn on, and are ready to reversely trigger back Road, two tunnels make electronic switch U7：B is turned on, and buzzer BUZ is sent single-tone.Reverse photoelectric coupled circuit is by optocoupler U4, triode Q4 groups Into multiple tube, the reverse induced current for the experiment transformer TR1 that amplification detection arrives, all the way to triode Q3, refer to reversely triggering Show that FCF lamps are bright, another way to electronic switch U5: C, managing D4 by diode makes controllable silicon U2 conductings and self-sustaining, plays 4 works With：1st, make reversed polarity instruction FJX lamps bright；2nd, double reading milliammeter is reverse-biased；3rd, turn on D3 Clamp-on positions, make U5：A electronic switches turn off, Locking positive polarity indicates loop, while U6：Two tunnels of A output high level point, make U5 all the way：D electronic switches turn on, and are ready to reversely Trigger circuit, two tunnels make electronic switch U7：A is turned on, and makes U6：C、U6：The multivibrator that the frequency of D compositions is 20Hz works, Buzzer BUZ is set to send double-tone.

(2) electrification reset circuit, to enable device energization momentary polarity indicating circuit to be automatically placed in original operating state, if Forward and reverse electrification reset circuit is put.Positive electrification reset circuit is made up of R5, C1, is powered moment, and C1 is low level, electricity Sub switch U5：C disconnects, U5：D is turned on, cut-out reversed polarity instruction loop, after C1 charging completes, electronic switch U5：C is turned on, electricity Sub switch U5：D disconnects, and gets out reversed polarity instruction loop；Electronic switch U7：B disconnects positive polarity sound loop.Replied by cable on reversely Position circuit is made up of R9, C2, is powered moment, and C2 is low level, electronic switch U5：A disconnects, U5：B is turned on, and cut-out reversed polarity refers to Show loop, after C2 charging completes, electronic switch U5：A is turned on, electronic switch U5：B disconnects, and gets out positive polarity instruction loop；Electricity Sub switch U7：A conducting locking reversed polarity sound loop.

Sound control unit, as shown in figure 5, including：Electronic switch U7, diode D5-D7, and resistance R12-R13；Institute State electronic switch U7：A 13 terminal receptions are from the positive/negative negative polarity power-on reset signal to optocoupler unit, electronic cutting Close U7：A 1 terminal is connected with diode D7 negative pole, diode D7 positive pole and resistance R13 first end, phase inverter U6：C 5 terminals connection, phase inverter U6：C 6 terminals and resistance R12 first end, phase inverter U6：D 13 terminals connection, phase inverter U6：D 12 terminals are connected with electric capacity C3 first end, electric capacity C3 the second end and diode D5 positive pole, electronic switch U7：A 2 terminals, resistance R13 the second end, resistance R12 the second end, buzzer BJZ first end connect and be grounded；Diode D5 Negative pole be connected with buzzer BJZ the second end, diode D6 negative pole, diode D6 positive pole and electronic switch U7：The 10 of B Terminal connects, electronic switch U7：B 12 terminal receptions from the positive/negative positive polarity power-on reset signal to optocoupler unit, Electronic switch U7：Positive power signal of B 11 terminal receptions from the function switching unit.

Sound circuit forward direction on-off circuit, rev switch circuitry, low-frequency oscillator, buzzer composition.Wherein U6：C、U6： D, R3, R2, C3 form the low-frequency oscillator that frequency is 20Hz, under normal circumstances, electronic switch U7：A is turned on, and locking low frequency shakes Swing device, D5 is low level, electronic switch U7：B disconnects, and D6 is low level, therefore, BUZ1 voiceless sounds.When forward direction triggers, electronics Switch U7：B is turned on, BUZ1 obtain it is electric send single-tone, represent positive polarity；When reverse triggering, electronic switch U7：A disconnects, 20Hz Low-frequency oscillator work, by D5 make BUZ1 send by 20Hz modulate double-tone.

Be delayed involution unit, as shown in fig. 6, including：Diode D8-D12, resistance R14-R15 and electric capacity C4；Described two Pole pipe D9 negative pole is received and connect from the positive/negative negative polarity power-on reset signal to optocoupler unit, diode D8 negative pole Receive from the positive/negative positive polarity power-on reset signal to optocoupler unit, diode D9 positive pole and diode D8 positive pole, Phase inverter U6：E 11 terminals connection, phase inverter U6：E 10 terminals are connected with diode D10 negative pole, and diode D10 is just Pole and resistance R14 first end, electric capacity C4 first end, diode D11 anode and phase inverter U6：F 9 terminals connection, Phase inverter U6：Delayed reset signal of F 8 terminal receptions from the function switching unit；Resistance R14 the second end and two poles Pipe D12 positive pole connection, is received from the positive/negative positive power signal to optocoupler unit；Diode D12 negative pole and resistance R15 first end connection, resistance R15 the second end are connected with the first end of diode D11 negative pole, delay involution button F GY, Delay involution button F GY the second end is connected and is grounded with electric capacity C4 the second end.

Hand resetting button F GS is normally closed button, after pressing, has cut off polarity hold forward or backwards, is released Locking.The involution button F GY that is delayed is two-position button, can be maintained a normally open or normally closed.When FGY is closed, D11 is low level, U6：F exports high level, electronic switch U7：C is turned on, and realizes hand resetting function；When FGY is opened, D11 is high level, U6： F exports high level, and delay reset function opens.After positive polarity or reversed polarity instruction circuit behavior, D8 or D9 low potentials, U6： E exports high level, U6：F exports high level, and C4 charges, after 10s delays, U6：F exports low level, electronic switch U7：C disconnects, Be delayed involution polarity hold forward or backwards.

Embodiment described above is a kind of preferable scheme of the present utility model, not makees any shape to the utility model Limitation in formula, there are other variants and remodeling on the premise of without departing from the technical scheme described in claim.

Claims (5)

1. a kind of mutual inductor polarity test system, it is characterised in that including battery case, polarity indicator and polarity test system Circuit；

The primary side of to-be-tested transformer is connected with the battery case；

The secondary side of to-be-tested transformer is connected with the polarity test circuit system；

The polarity indicator includes positive triggering indicator lamp ZCF, reversely triggering indicator lamp FCF, positive polarity indicator lamp ZJX, instead Polarity indicator lamp FJX, power supply indicator PWR, hand resetting button F GS, delay involution button F GY, buzzer BJZ and two-way Milliammeter；The positive triggering indicator lamp ZCF, reversely triggers indicator lamp FCF, positive polarity indicator lamp ZJX, reversed polarity indicator lamp FJX, power supply indicator PWR, hand resetting button F GS, delay involution button F GY and double reading milliammeter with polarity test system Circuit of uniting connects；

The polarity test circuit system includes function switching unit, positive/negative to optocoupler unit, sound control unit and delay Involution unit；The function switching unit provides electricity to be positive/negative to optocoupler unit, sound control unit and delay involution unit Source signal；Hand resetting button F GS is connected with function switching unit, double reading milliammeter, positive triggering indicator lamp ZCF, is reversely touched Hair indicator lamp FCF, positive polarity indicator lamp ZJX and reversed polarity indicator lamp FJX are connected with positive/negative to optocoupler unit, buzzer BJZ It is connected with sound control unit, delay involution button F GY is connected with delay involution unit.

A kind of 2. mutual inductor polarity test system according to claim 1, it is characterised in that the function switching unit bag Include function switch switch, experiment transformer and electronic switch U7；

The function switch switch is the throw switch SW1 of four knife three；

The throw switch SW1 of four knife three A contacts are the first movable contact, tri- corresponding A 1, A2, A3 stationary contacts；

The throw switch SW1 of four knife three B contact is the second movable contact, tri- stationary contacts of corresponding B4, B5, B6；

The throw switch SW1 of four knife three C contacts are the 3rd movable contact, tri- stationary contacts of corresponding C7, C8, C9；

The throw switch SW1 of four knife three D contacts are the 4th movable contact, tri- stationary contacts of corresponding D11, D12, D13；

The primary side first end S1 and the throw switch SW1 of four knife three of to-be-tested transformer A contact portions；

Primary side the second end S2 of to-be-tested transformer is connected with the throw switch SW1 of four knife three B contact；

A2 contacts are connected with testing the polar end of transformer primary side, and the non-polar end and B5 contacts for testing transformer primary side connect Connect；

The polar end and C8 contact portions of transformer secondary side are tested, exports optocoupler positive signal；

A3 contacts and C9 contact portions；C7 contacts and D10 contacts are vacant；

The non-polar end and B6 contact portions of experiment transformer secondary side simultaneously export optocoupler negative signal；

D11 contacts and D12 contacts, electronic switch U7：C the 3rd terminal connection, exports positive power signal；

Electronic switch U7：C the 4th terminal is connected with hand resetting button F GS first end, and the second of hand resetting button F GS End output hand resetting signal；

Electronic switch U7：C the 5th terminal output delay slot signal.

A kind of 3. mutual inductor polarity test system according to claim 2, it is characterised in that the sound control unit bag Include：

Electronic switch U7, diode D5-D7, resistance R12-R13 and phase inverter U6；

The electronic switch U7：A 13 terminal receptions from the positive/negative negative polarity power-on reset signal to optocoupler unit, Electronic switch U7：A 1 terminal is connected with diode D7 negative pole, diode D7 positive pole and resistance R13 first end, anti-phase Device U6：C 5 terminals connection, phase inverter U6：C 6 terminals and resistance R12 first end, phase inverter U6：D 13 terminals connection, Phase inverter U6：D 12 terminals are connected with electric capacity C3 first end, electric capacity C3 the second end and diode D5 positive pole, electronic cutting Close U7：A 2 terminals, resistance R13 the second end, resistance R12 the second end, buzzer BJZ first end are connected and are grounded；Two Pole pipe D5 negative pole is connected with buzzer BJZ the second end, diode D6 negative pole, diode D6 positive pole and electronic switch U7：B 10 terminals connection, electronic switch U7：B 12 terminal receptions are electric in the positive/negative positive polarity to optocoupler unit Reset signal, electronic switch U7：Positive power signal of B 11 terminal receptions from the function switching unit.

4. a kind of mutual inductor polarity test system according to claim 3, it is characterised in that described positive/negative to optocoupler list Member, including optocoupler U3-U4, electronic switch U5, triode Q1-Q4, resistance R1-R11, diode D1-D4, electric capacity C1-C2 and Controllable silicon U1-U2；

The optocoupler positive signal of the function switching unit output is connected with optocoupler U3 1 terminal, optocoupler U4 2 terminals, the work( The optocoupler negative signal of energy switch unit output is connected with optocoupler U3 2 terminals, optocoupler U4 1 terminal；

Optocoupler U3 5 terminals pass through resistance R2 and positive power signal, power supply indicator PWR first ends, positive triggering indicator lamp ZCF First end, resistance R5 first ends, reversely resistance R9 first ends, triggering indicator lamp FCF first ends, the connection of resistance R6 first ends；Light Coupling U3 5 terminals are connected with the base stage of triode Q1 colelctor electrode and triode Q2；

Optocoupler U3 4 terminals are connected with triode Q1 base stage, triode Q1 emitter stage and electronic switch U5：A 1 terminal,

Electronic switch U5：B 11 terminals connection；

Electronic switch U5：B 12 terminals and phase inverter U6：B 4 terminals connection；

The ends of power supply indicator PWR second are grounded by resistance R1；The second ends of forward direction triggering indicator lamp ZCF pass through resistance R3 and three poles Pipe Q2 emitter stages connect；

Electronic switch U5：A 13 terminals and the ends of resistance R9 second, phase inverter U6：B 3 terminals, diode D3 positive pole and electricity Hold C2 first end connection, output negative pole power-on reset signal；

Electronic switch U5：A 2 terminals are connected with diode D1 positive pole, diode D1 negative pole and controllable silicon U1 control pole Connection, controllable silicon U1 anode are connected by positive polarity indicator lamp ZJX and diode D2 negative pole, the ends of resistance R4 second；Two poles Pipe D2 positive pole and resistance R5 the second end, phase inverter U6：A 1 terminal, electronic switch U5：C 5 terminals and electric capacity C1's First end connection and output cathode power-on reset signal；

Phase inverter U6：A 2 terminals and electronic switch U5：D 6 terminals connection and output cathode control signal；

The hand resetting signal of the function switching unit output is connected with resistance R4 first ends, resistance R8 first ends；

The ends of resistance R4 second are connected with the positive pole of A1 contacts, double reading milliammeter, the negative pole of double reading milliammeter and the first of resistance R10 End connection, resistance R10 the second end is connected with the first end of B4 contacts, resistance R11；Resistance R11 the second end is with resistance R8's Second end, the first end connection of diode D3 negative pole, reversed polarity indicator lamp FJX；

Reversed polarity indicator lamp FJX the second end is connected with controllable silicon U2 anodes, controllable silicon U2 control poles and diode D4 negative pole Connection, diode D4 positive pole and electronic switch U5：C 3 terminals connection；Electronic switch U5：C 4 terminals and electronic switch U5： The emitter stage connection of D 8 terminals, triode Q4；

Triode Q4 base stage is connected with optocoupler U4 4 terminals；Optocoupler U4 5 terminals and resistance R6 the second end, triode Q4 Colelctor electrode and triode Q3 base stage connection；Triode Q3 emitter stage passes through resistance R7 and reversely triggering indicator lamp FCF The second end connection；

Electronic switch U5：B 10 terminals and triode Q2 colelctor electrode, controllable silicon U1 negative electrode, electric capacity C1 the second end, electric capacity C2 the second end, triode Q3 colelctor electrode, controllable silicon U2 negative electrodes and electronic switch U5：D 9 terminals are connected and are grounded.

A kind of 5. mutual inductor polarity test system according to claim 4, it is characterised in that the delay involution unit bag Include：Diode D8-D12, resistance R14-R15 and electric capacity C4；

The negative pole of the diode D9 is received from the positive/negative negative polarity power-on reset signal to optocoupler unit, diode D8 negative pole is received from the positive/negative positive polarity power-on reset signal to optocoupler unit, diode D9 positive pole and two poles Pipe D8 positive pole, phase inverter U6：E 11 terminals connection, phase inverter U6：E 10 terminals are connected with diode D10 negative pole, and two Pole pipe D10 positive pole and resistance R14 first end, electric capacity C4 first end, diode D11 anode and phase inverter U6：F's 9 terminals connect, phase inverter U6：Delay slot signal of F 8 terminal receptions from the function switching unit；The of resistance R14 Two ends are connected with diode D12 positive pole, are received from the positive/negative positive power signal to optocoupler unit；Diode D12's Negative pole is connected with resistance R15 first end, resistance R15 the second end and diode D11 negative pole, delay involution button F GY First end connects, and delay involution button F GY the second end is connected and is grounded with electric capacity C4 the second end.