CN208872836U - Mutual inductor is wireless polarity tester - Google Patents

Abstract

The utility model discloses the wireless polarity testers of mutual inductor, including being connected to the main equipment of mutual inductor primary side and being connected to the test equipment of mutual inductor secondary side, main equipment includes wireless receiving module, current output circuit, voltage follower circuit, current regulating circuit, voltage regulator circuit, deferred action circuit and power-switching circuit, test equipment includes wireless transmitter module, control module and measurement module, current output circuit and voltage follower circuit are all connected with mutual inductor primary side, measurement module connects mutual inductor secondary side, observation microampere meter indicator deflection judges the polarity of mutual inductor.Compared with prior art, the utility model improves work on the spot efficiency when testing mutual inductor, saves manpower and time, substantially increases the accuracy of measurement.

Description

Mutual inductor is wireless polarity tester

Technical field

The utility model relates to mutual inductor polarity the field of test technology, the specifically wireless polarity tester of mutual inductor.

Background technique

In substation's construction, mutual inductor polarity test job is a pith of relay protection work, is become in tradition It is DC power supply method that the mutual inductor polarity test job in power station, which is applied at most, and traditional mutual inductor polarity test job needs 3-4 People's operation, it is secondary when current transformer changes greatly when measuring CT (current transforme, current transformer) The induced current very little of side, it is virtually impossible to deflect pointer gauge, just can not accurately judge if reusing the milliampere shelves of multimeter Whether current transformer polarity is correct, and frequently not only causes to waste using dry cell but also be unfavorable for environmental protection.

In measurement PT (Potential transforme, voltage transformer) or CVT (Capacitor Voltage Transformer, capacitance type potential transformer) when, very big due to being added in primary side voltage needs, conventional method requires manually It goes to add a higher voltage, or one high voltage of measurement, leads to that there is certain risk in the course of work.

The traditional Work tool for measuring mutual inductor is scattered, and rapid wear, safety is poor, without professional tool, seriously constrains scene Working efficiency；And two groups of personnel are needed during traditional experiment, dosage side at a distance of remote, is tested different from test with test side Step, it is error-prone, and labor intensive and time；Conventional operation time is long, and personnel cooperate efficiency slow, it is necessary to by repeatedly measuring Judgment accuracy is improved, the working time is greatly increased.

Utility model content

For the above-mentioned the shortcomings of the prior art of customer service, the wireless polarity of mutual inductor is provided in the utility model embodiment and is surveyed Instrument is tried to test the polarity of mutual inductor, to solve the problems of the prior art.

Technical solution adopted by the utility model to solve its technical problems is the wireless polarity testers of mutual inductor, including even Connect mutual inductor primary side main equipment and be connected to the test equipment of mutual inductor secondary side；The main equipment includes wireless receiving Module, signal output module, signal-adjusting module and power-switching circuit, the test equipment include wireless transmitter module, control Molding block and measurement module, the control module connect wireless transmitter module, the wireless transmitter module and wireless receiving module It is wirelessly connected, the wireless receiving module is sequentially connected signal output module and mutual inductor primary side, the signal output module It is also connected with signal-adjusting module, the power-switching circuit connects wireless receiving module, and the measurement module connects mutual inductor two Secondary side.

Optionally, the control module includes that the input terminal of three sections of knobs SA, three sections of knob SA connect two sections of switches The first output end of S2, the first output end, second output terminal and the third output end of three sections of knob SA are connect by divider resistance The second output terminal on ground, two sections of switch S2 is grounded by divider resistance, the input terminal connection button S1's of two sections of switch S2 One terminals, another terminals of button S1 are separately connected one end of resistance R4 and the base stage of triode Q1, and resistance R4's is another End is separately connected the emitter of triode Q1 and the cathode of diode (LED) 1, and the collector of triode Q1 connects wireless transmission mould The anode of block, diode (LED) 1 passes through power switch S0 connection power supply.

Optionally, the wireless transmitter module includes coding chip, the Vcc of the collector connection coding chip of triode Q1 Pin, the Dout pin of coding chip connect transmitting antenna, D0 pin, D1 pin, D2 pin and the D3 pin point of coding chip It Lian Jie not the first output end of three sections of knob SA, second output terminal, the second output terminal of third output end and two sections of switch S2.

Optionally, the measurement module includes microampere meter, positive test pencil and negative test pencil, and the button S1 is placed in positive test pencil On, the first interface of positive test pencil is audio interface, connects one end of mutual inductor secondary side, and the one of second interface connection microampere meter is defeated Enter end, the other end of the first interface connection mutual inductor secondary side of negative test pencil, second interface connects another input terminal of microampere meter.

Optionally, the signal output module includes current output circuit and voltage follower circuit, the Signal Regulation mould Block includes current regulating circuit and voltage regulator circuit；The wireless receiving module includes decoding chip, the D0 pipe of decoding chip Foot, D1 pin and D2 pin connect current output circuit, and the D3 pin of decoding chip connects voltage follower circuit, decoding chip VCC pin connects 5V power supply, the VSS pin ground connection of decoding chip, and the OSV1 pin of decoding chip is managed by resistance R16 and OSV2 Foot is connected, and the VT pin of decoding chip is connected by resistance R15 with the GND pin for receiving chip, and the DIN pin of decoding chip connects The DATA pin and DATA1 pin for receiving chip receive the VCC pin connection 5V power supply of chip, receive the TX pin of chip Connect receiving antenna.

Optionally, the voltage follower circuit includes resistance R1, the D3 pin of one end connection decoding chip of resistance R1, electricity The other end of resistance R1 is separately connected one end of resistance R2 and the base stage of triode Q2, the other end of resistance R2 and the hair of triode Q2 Emitter-base bandgap grading is grounded, the collector of triode Q2 be separately connected one end of electromagnetic type relay K1 coil, relay K2 coil one The anode at end and diode D1, the other end of electromagnetic type relay K1 coil, the other end of 2 coil of relay and diode D1 Cathode is all connected with power supply VCC, and one end of the contact electromagnetic type relay K1 connects the port V3, and the other end is separately connected the port VN or V2 Port, one end of 2 contact of relay connect power supply VCC, and the other end connects deferred action circuit by the port V0.

Optionally, the deferred action circuit includes relay K6, and one end of the relay K6 coil is separately connected V0 Port, the cathode of diode D6 and resistance R3 one end, the other end of relay K6 coil is separately connected the current collection of triode Q6 The anode of pole and diode D6, triode Q6 emitter ground connection, the base stage of triode Q6 be separately connected resistance R11 one end and The anode of voltage-stabiliser tube DO1, the cathode of voltage-stabiliser tube DO1 are separately connected the other end of resistance R3 and one end of capacitor C1, capacitor C1's The other end of the other end and resistance R11 are grounded, and one end of the contact relay K6 connects the port V0, the contact relay K6 it is another End connects voltage regulator circuit by the port V1.

Optionally, the current output circuit includes that A phase current output circuit, B phase current output circuit and C phase current are defeated Circuit out, the A phase current output circuit include resistance R5, the D0 pin of one end connection decoding chip of the resistance R5, electricity The other end of resistance R5 is separately connected one end of resistance R6 and the base stage of triode Q3, the other end of resistance R6 and the hair of triode Q3 Emitter-base bandgap grading is grounded, and the collector of triode Q3 is separately connected one end of relay K3 coil and the anode of diode D3, relay The other end of K3 coil and the cathode of diode D3 are all connected with power supply VCC, one end connection current regulation electricity of the contact relay K3 Road, the other end connect the port IA；

The B phase current output circuit includes resistance R7, the D1 pin of one end connection decoding chip of the resistance R7, separately One end is separately connected one end of resistance R8 and the base stage of triode Q4, and the other end of resistance R8 and the emitter of triode Q4 connect Ground, the collector of triode Q4 are separately connected one end of relay K4 coil and the anode of diode D4, relay K4 coil The cathode of the other end and diode D4 are all connected with power supply VCC, and one end of the contact relay K4 connects current regulating circuit, the other end Connect the port IB；

The C phase current output circuit includes resistance R9, the D2 pin of one end connection decoding chip of the resistance R9, separately One end is separately connected one end of resistance R10 and the base stage of triode Q5, and the other end of resistance R10 and the emitter of triode Q5 are equal Ground connection, the collector of triode Q5 are separately connected one end of relay K5 coil and the anode of diode D5, relay K5 coil The other end and the cathode of diode D5 be all connected with power supply VCC, one end of the contact relay K5 connects current regulating circuit, another The end connection port IC.

Optionally, the tester further includes wrist strap, pedestal, the first rotating part and the second rotating part, and the pedestal is fixed It is connected on wrist strap, card slot, the buckle that setting is cooperatively connected with card slot on the first rotating part, first rotation is set on pedestal Portion is rotated vertically by being buckled in card slot, and second rotating part is fixedly connected with test equipment, the second rotating part and first Rotating part is rotatablely connected by screw rod.

The effect provided in utility model content is only the effect of embodiment, rather than whole effects that utility model is all Fruit, a technical solution in above-mentioned technical proposal have the following advantages that or the utility model has the advantages that

1, the wireless polarity tester of the utility model mutual inductor includes main equipment and test equipment, the signal output of main equipment Module is connected to mutual inductor primary side, and the measurement module of test equipment connects mutual inductor secondary side, few using number of devices, and only It needs a people that can singly complete the polarity test of mutual inductor, improves work on the spot efficiency, save manpower and time, Substantially increase the accuracy of measurement.

2, wireless receiving module receives the wireless signal of wireless transmitter module transmitting, the output of wireless receiving module driving current Circuit output A phase, B phase and C phase current, and A phase, B phase and C phase current are connected to mutual inductor primary side, avoid the prior art In frequently use the wasting situation of dry cell, wireless receiving module driving voltage output circuit output voltage, output Voltage is also connected to mutual inductor primary side, avoids in the prior art the primary side high voltage the case where, increases work Safety.

3, the wireless polarity tester of mutual inductor further includes wrist strap, pedestal, the first rotating part and the second rotating part, in mutual inductor When secondary side test mutual inductor polarity, test equipment can be fixed in wrist by wrist strap, and as needed set test It is standby to be rotated, facilitate tester to test the polarity of mutual inductor.

Detailed description of the invention

In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, for ordinary skill people For member, without creative efforts, it is also possible to obtain other drawings based on these drawings.

Fig. 1 is the module map of the wireless polarity tester of mutual inductor；

Fig. 2 is test equipment control module and wireless module structure chart；

Fig. 3 is test equipment measurement module structure chart；

Fig. 4 is test equipment measurement test pencil wiring diagram；

Fig. 5 is power-switching circuit structure chart；

Fig. 6 is wireless receiving module structure chart；

Fig. 7 is voltage follower circuit structure chart；

Fig. 8 is deferred action circuit structure diagram；

Fig. 9 is voltage regulator circuit structure chart；

Figure 10 is current regulating circuit structure chart；

Figure 11 A is A phase current output circuit figure；

Figure 11 B is B phase current output circuit figure；

Figure 11 C is C phase current output circuit figure；

Figure 12 is test equipment schematic diagram (one)；

Figure 13 is test equipment schematic diagram (two)；

Figure 14 is main equipment schematic diagram.

In figure, 1 test equipment, 10 wrist straps, 101 pedestals, 1011 card slots, 102 first rotating parts, 1021 buckles, 103 second Rotating part, 104 screw rods, tri- sections of knobs of SA, bis- sections of S2 switches, 11 transmitting antennas, 12 3.5mm audio interface, 13 standard interfaces, 14 microampere meters, 15 test equipment power switches；2 main equipments, IA A phase current output port, IB B phase current output port, IC C phase current output port, IN N electrode current output port, V3 positive polarity output port, VN voltage cathode output port, 211 Voltage adjusting knob, 212 current adjusting knobs, 22 receiving antennas, 23 main equipment power switches.

Specific embodiment

In order to clarify the technical characteristics of the invention, below by specific embodiment, and its attached drawing is combined, to this reality It is described in detail with novel.Following disclosure provides many different embodiments or example is used to realize the utility model Different structure.In order to simplify the disclosure of the utility model, hereinafter the component of specific examples and setting are described.In addition, The utility model can in different examples repeat reference numerals and/or letter.This repetition is for simplified and clear mesh , the relationship between discussed various embodiments and/or setting itself is not indicated.It should be noted that illustrated in the accompanying drawings Component is not drawn necessarily to scale.The description to known assemblies and treatment technology and process is omitted to avoid not in the utility model Necessarily limit the utility model.

As shown in Figure 1, the wireless polarity tester of the mutual inductor of the utility model, the master including being connected to mutual inductor primary side Equipment and the test equipment for being connected to mutual inductor secondary side；Main equipment includes wireless receiving module, signal output module, signal tune Saving module, power-switching circuit and deferred action circuit, signal output module includes current output circuit and voltage follower circuit, Signal-adjusting module includes current regulating circuit and voltage regulator circuit, and test equipment includes wireless transmitter module, control module And measurement module, control module connect wireless transmitter module, wireless transmitter module and wireless receiving module are wirelessly connected, wirelessly connect It receives module and is sequentially connected signal output module and mutual inductor primary side, signal output module is also connected with signal-adjusting module, power supply Conversion circuit connects wireless receiving module, and deferred action circuit connection voltage regulator circuit, it is secondary that measurement module connects mutual inductor Side.

As shown in Fig. 2, control module includes three sections of knob SA, the input terminal of three sections of knob SA connects the of two sections of switch S2 One output end, the first output end, second output terminal and the third output end of three sections of knob SA are grounded by divider resistance, and two sections The second output terminal of switch S2 is grounded by divider resistance, and a terminals of the input terminal connection button S1 of two sections of switch S2 are pressed Another terminals of button S1 are separately connected one end of resistance R4 and the base stage of triode Q1, and the other end of resistance R4 is separately connected three The collector of the emitter of pole pipe Q1 and the cathode of diode (LED) 1, triode Q1 connects wireless transmitter module, diode (LED) 1 Anode pass through power switch S0 connection power supply.

Yellow indicator lamp is connected to the first output end of three sections of knob SA, and green indicator light is connected to the of three sections of knob SA Two output ends, red indicating light are connected to the third output end of three sections of knob SA, and blue indicator light is connected to two sections of switch S2's Second output terminal, yellow indicator lamp are used to indicate the output of A phase current, and green indicator light is used to indicate the output of B phase current, and red refers to Show that lamp is used to indicate the output of C phase current, blue indicator light is used to indicate positive polarity output.

Wireless transmitter module includes coding chip, the collector connection coding chip of model PT2262, triode Q1 Vcc pin, the Dout pin of coding chip connect transmitting antenna, and transmitting antenna selects 12V power supply power supply, and transmitting antenna has Ground line, the Vss pin and TE pin of coding chip are grounded, and the OCS1 pin of coding chip passes through resistance R and OCS2 pin Connection, the collector of the Vcc pin connecting triode Q1 of coding chip, D0, D1, D2 and D3 pin of coding chip are separately connected The first output end of three sections of knob SA, second output terminal, the second output terminal of third output end and two sections of switch S2, transmitting antenna Emit wireless signal to the wireless receiving module of main equipment, coding chip is that wireless signal is encoded.

As shown in figure 3, measurement module includes microampere meter, positive test pencil and negative test pencil, the interface end of positive test pencil connects microampere meter An input terminal, negative test pencil interface end connection microampere meter another input terminal.

As shown in figure 4, button S1 is placed on positive test pencil, the first interface of positive test pencil is audio interface, connects mutual inductor One end of secondary side, second interface connect an input terminal of microampere meter, the first interface connection mutual inductor secondary side of negative test pencil The other end, second interface connect another input terminal of microampere meter, and button S1-1 represents a terminals of button S1, and S1-2 representative is pressed Another terminals of button S1,3-0 represent the first interface of positive test pencil, and 3-1 represents a terminals of button S1, and 3-2 represents button Another terminals of S1.

Button S1 is switch button, and when button S1 is pressed, control module is connected with wireless transmitter module, to main equipment Wireless signal is sent, main equipment is mutual inductor primary side input electrical signal, and measurement module is in the secondary side test mutual inductor of mutual inductor Polarity.

As shown in figure 5 ,+12V voltage is converted to+5V voltage, the input voltage of power-switching circuit by power-switching circuit Connect the anode of diode D7, the V1 pin of voltage stabilizing chip of the cathode connection model LM7815 of diode D7, capacitor C2 One end of one end and capacitor C3, the other end of capacitor C2 and the other end of capacitor C3 are grounded, and the GND pin of voltage stabilizing chip connects Ground, the VO pin of voltage stabilizing chip are separately connected one end of capacitor C4 and capacitor C5, and the other end of capacitor C4 and capacitor C5 are grounded, One end of one end connection resistance R12 of capacitor C5, the anode of the other end connection Light-emitting diode LED 2 of resistance R12, luminous two The cathode of pole pipe LED2 is grounded, and one end of capacitor C4 is output voltage port, and+5V the voltage exported is supplied to wireless receiving module Electricity.

As shown in fig. 6, wireless receiving module includes receiving chip and decoding chip, receives chip and receive wireless signal, connect The model SCSR121 of chip is received, decoding chip is decoded wireless signal, the model PT2272 of decoding chip, receives The TX pin of chip connects antenna, receives the wireless signal of wireless transmitter module transmitting, receives the VCC pin connection power supply of chip + 5V the voltage of conversion circuit output, the DATA pin and DATA1 pin that receive chip are all connected with the DIN pin of decoding chip, connect The GND pin for receiving chip passes through the VT pin of resistance R15 connection decoding chip, and the OSV1 pin of decoding chip passes through resistance R16 Connect the OSV2 pin of decoding chip, the VSS pin ground connection of decoding chip, D0 pin, D1 pin and the D2 pin of decoding chip Current output circuit is connected, the D3 pin of decoding chip connects voltage follower circuit, controls the output or control of a certain phase of electric current The output of voltage processed.

As shown in fig. 7, voltage follower circuit includes resistance R1, the D3 pin of one end connection decoding chip of resistance R1, electricity The other end of resistance R1 is separately connected one end of resistance R2 and the base stage of triode Q2, the other end of resistance R2 and the hair of triode Q2 Emitter-base bandgap grading is grounded, the collector of triode Q2 be separately connected one end of electromagnetic type relay K1 coil, relay K2 coil one The anode at end and diode D1, the other end of 1 coil of electromagnetic type relay, the other end of 2 coil of relay and diode D1 Cathode is all connected with power supply VCC, and one end of 1 contact of electromagnetic type relay connects the port V3, and the other end is separately connected the port VN or V2 Port, one end of 2 contact of relay connect power supply VCC, and the other end connects deferred action circuit by the port V0.

Relay 2 is controlled by decoding chip D3 pin and is attracted, when D3 pin is connected, triode Q2 conducting, and relay K1 Electric, corresponding contact movement is obtained with relay K2 coil.When relay K2 movement, the port V0 is connected, and is delay by the port V0 Actuating circuit provides voltage, and when electromagnetic type relay 1 acts, the port V2 is connect with the port V3, and voltage follower circuit passes through V2 Port is to the port V3 output voltage, and when electromagnetic type relay 1, which acts, to be returned, the port V3 and the port VN are connected, voltage output electricity Road electric discharge.

The output voltage V3 of voltage follower circuit is connected in a side loop of PT or CVT.

As shown in figure 8, deferred action circuit includes relay K6, the end V0 that one end of relay K6 coil is separately connected One end of mouth, the cathode of diode D6 and resistance R3, the other end of relay K6 coil are separately connected the collector of triode Q6 With the anode of diode D6, the emitter of triode Q6 is grounded, and the base stage of triode Q6 is separately connected one end of resistance R11 and steady The anode of pressure pipe DO1, the cathode of voltage-stabiliser tube DO1 are separately connected the other end of resistance R3 and one end of capacitor C1, capacitor C1 and electricity The other end of resistance R11 is grounded, and one end of the contact relay K6 connects the port V0, and the other end of the contact relay K6 passes through the end V1 Mouth connection voltage regulator circuit.

Deferred action circuit connects voltage regulator circuit by the port V1, and 5 seconds voltage is provided for voltage regulator circuit, prevents Only voltage regulator circuit, which works long hours, burns out device.

As shown in figure 9, voltage regulator circuit includes pwm chip, model OZ9RR, the PWM control of pwm chip The grid of the DRV1 pin connection N-channel power field effect pipe VF1 of coremaking piece, the source electrode ground connection of VF1, the drain electrode of VF1, which connects, to be become One end of depressor T first winding, the grid of the DRV2 pin connection N-channel power field effect pipe VF2 of pwm chip, VF2's Source electrode ground connection, the other end of the drain electrode connection transformer T first winding of VF2, the centre cap connection of transformer T first winding are prolonged When actuating circuit the port V1, transformer T secondary winding one end ground connection, secondary winding the other end connection resistance R13 one End, one end of the other end connection variable resistance R14 of resistance R13, the other end ground connection of variable resistance R14, pwm chip ISFN pin connects one end of resistance R13, and the other end of resistance R13 connects output voltage V2, output voltage VN ground connection.

Output voltage V2 provides voltage for voltage follower circuit, by the size for adjusting variable resistance R14, thus it is possible to vary defeated The size of voltage V2 out, to change the size of the output voltage V3 of voltage follower circuit.

As shown in Figure 10, current regulating circuit includes power conversion chip XL4016E1, the input electricity of current regulating circuit Pressure VCC is+12V, and output voltage VO UT is+1.5V, and the GND pin of power conversion chip is grounded, the VIN pipe of power conversion chip Foot connects the anode of VCC, and the VIN pin of power conversion chip is also connected with one end of capacitor C8, and the other end of capacitor C8 connects electricity The other end that one end of the VC pin of source transformation chip, capacitor C6 and capacitor C7 are all connected with VCC, capacitor C6 and capacitor C7 connects Ground, the output end of the SW pin connection voltage-stabiliser tube DO2 of power conversion chip, the input end grounding of voltage-stabiliser tube DO2, voltage-stabiliser tube DO2 Output end be also connected with one end of inductor L1, one end of the other end connection capacitor C9 of inductor L1 and one end of capacitor C10, The other end of capacitor C9 and the other end of capacitor C10 are grounded, one end of one end connection resistance R15 of capacitor C10, resistance R15 Other end connection resistance R16 one end, the other end ground connection of resistance R16, the FB pin of power conversion chip connects resistance R15 The other end, one end of capacitor C10 is separately connected one end of resistance R17 and one end of variable resistance R18, variable resistance R18's Other end connection output electric current I1, the other end of resistance R17 and the other end of variable resistance R18 are grounded, and output electric current IN connects Ground exports electric current I1 connection current output circuit.

The electric current I1 that exports of current regulating circuit provides input current to current output circuit, by adjusting variable resistance The size of R18, thus it is possible to vary the size of output electric current I1, to change the output electric current IA of current output circuit, output electric current The size of IB and output electric current IC.

As shown in Figure 11 A, Figure 11 B and Figure 11 C, current output circuit includes A phase current output circuit, the output of B phase current Circuit and C phase current output circuit, A phase current output circuit include resistance R5, the D0 of one end connection decoding chip of resistance R5 Pin, the other end of resistance R5 are separately connected one end of resistance R6 and the base stage of triode Q3, the other end of resistance R6 and three poles The emitter of pipe Q3 is grounded, and one end that the collector of triode Q3 is separately connected relay K3 coil and diode D3 are just Pole, the other end of relay K3 coil and the cathode of diode D3 are all connected with power supply VCC, and one end of the contact relay K3 connects electricity Stream adjusts circuit, and the other end connects the port IA；

B phase current output circuit includes resistance R7, the D1 pin of one end connection decoding chip of resistance R7, other end difference One end of resistance R8 and the base stage of triode Q4 are connected, the other end of resistance R8 and the emitter of triode Q4 are grounded, three poles The collector of pipe Q4 is separately connected one end of relay K4 coil and the anode of diode D4, the other end of relay K4 coil and The cathode of diode D4 is all connected with power supply VCC, and one end of the contact relay K4 connects current regulating circuit, and the other end connects the end IB Mouthful；

C phase current output circuit includes resistance R9, the D2 pin of one end connection decoding chip of resistance R9, other end difference One end of resistance R10 and the base stage of triode Q5 are connected, the other end of resistance R10 and the emitter of triode Q5 are grounded, and three The collector of pole pipe Q5 is separately connected one end of relay K5 coil and the anode of diode D5, the other end of relay K5 coil It is all connected with power supply VCC with the cathode of diode D5, one end of the contact relay K5 connects current regulating circuit, and the other end connects IC Port.

The electric current IB and C phase current output of electric current IA, B phase current output circuit output of A phase current output circuit output The electric current IC of circuit output is connected in a side loop of CT.

As shown in Figure 12,13, test equipment 1 includes that there are three gears, respectively A phase by three sections of knobs SA, three sections of knob SA Electric current output, the output of B phase current and the output of C phase current, two sections of switch S2 there are two gear, respectively CT grades with PT/CVT grades, Transmitting antenna 11 emits wireless signal to the wireless receiving module of main equipment 2, and 3.5mm audio interface 12 connects positive test pencil, standard Interface 13 connects negative test pencil, and microampere meter 14 shows the polarity of mutual inductor, and test equipment power switch 15 is the power supply of test equipment 1 Switch button, test equipment 1 further include wrist strap 10, pedestal 101, the first rotating part 102 and the second rotating part 103, and pedestal 101 is solid Surely it is connected on wrist strap 10, card slot 1011 is set on pedestal 101, and setting is cooperatively connected with card slot 1011 on the first rotating part 102 Buckle 1021, the first rotating part 102 1021 rotated vertically by buckle in card slot 1011, the second rotating part 103 and test Equipment 1 is fixedly connected, and the second rotating part 103 is rotatablely connected with the first rotating part 102 by screw rod 104.

Test equipment is wearable in wrist by wrist strap 10, and aspect tester is in the secondary side test mutual inductor of mutual inductor Polarity.

As shown in figure 14, main equipment 2 is exported including A phase current output port IA, B phase current output port IB, C phase current Port IC, N electrode current output port IN, positive polarity output port V3, voltage cathode output port VN, voltage adjusting knob 211, current adjusting knob 212, receiving antenna 22 and main equipment power switch 23.

When testing CT, open main equipment power switch 23, A phase current output port IA, B phase current output port IB and C phase current output port IC is accessed in side loop of CT, N electrode current output port IN ground connection, by current adjusting knob 212 Suitable position is rotated to, test equipment power switch 15 is opened, two sections of switch S2 are arranged at CT grades, if test A phase current, Three sections of knob SA settings are exported in A phase current, measurement test pencil are inserted on the secondary side terminal of CT to be tested, by lower button S1, while transmitting antenna 11 emits wireless signal to receiving antenna 22,1 yellow indicator lamp of test equipment is bright；If test b is mutually electric Three sections of knob SA setting is exported in B phase current, measurement test pencil is inserted on the secondary side terminal of CT to be tested by stream, press by Button S1, while transmitting antenna 11 emits wireless signal to receiving antenna 22,1 green indicator light of test equipment is bright；If testing C phase Three sections of knob SA settings are exported in C phase current, measurement test pencil are inserted on the secondary side terminal of CT to be tested, is pressed by electric current Button S1, while transmitting antenna 11 emits wireless signal to receiving antenna 22,1 red indicating light of test equipment is bright, and above-mentioned three kinds Situation judges the polarity of CT by observation 14 indicator of microampere meter deflection.

When testing PT or CVT, main equipment power switch 23 is opened, positive polarity output port V3 accesses PT or CVT A side loop in, voltage cathode output port VN ground connection, voltage adjusting knob 211 is rotated into suitable position, open Test equipment power switch 15, two sections of switch S2 are arranged at PT/CVT grades, and measurement test pencil is inserted in the secondary of PT or CVT to be tested On side terminal, by lower button S1, while transmitting antenna 11 emits wireless signal, 1 blue instruction of test equipment to receiving antenna 22 Lamp is bright, and the polarity of PT or CVT are judged by observation 14 indicator of microampere meter deflection.

The above is preferred embodiments of the present invention, and those skilled in the art are come Say, without departing from the principle of this utility model, several improvements and modifications can also be made, these improvements and modifications also by It is considered as the protection scope of the utility model.

Claims (9)

1. mutual inductor is wireless polarity tester, characterized in that including being connected to the main equipment of mutual inductor primary side and being connected to mutually The test equipment of sensor secondary side；The main equipment includes wireless receiving module, signal output module, signal-adjusting module and electricity Power-switching circuit, the test equipment include wireless transmitter module, control module and measurement module, and the control module connects nothing Line transmitting module, the wireless transmitter module and wireless receiving module are wirelessly connected, and the wireless receiving module is sequentially connected letter Number output module and mutual inductor primary side, the signal output module are also connected with signal-adjusting module, the power-switching circuit Wireless receiving module is connected, the measurement module connects mutual inductor secondary side.

2. the wireless polarity tester of mutual inductor according to claim 1, characterized in that the control module includes three Duan Xuan The first output end of two sections of switch S2 of input terminal connection of button SA, three sections of knob SA, the first output end of three sections of knob SA, Second output terminal and third output end are grounded by divider resistance, and the second output terminal of two sections of switch S2 passes through partial pressure electricity Resistance ground connection, a terminals of the input terminal connection button S1 of two sections of switch S2, another terminals of button S1 are separately connected resistance One end of R4 and the base stage of triode Q1, the other end of resistance R4 are separately connected the emitter and diode (LED) 1 of triode Q1 Cathode, the collector of triode Q1 connect wireless transmitter module, and the anode of diode (LED) 1 passes through power switch S0 connection power supply.

3. the wireless polarity tester of mutual inductor according to claim 2, characterized in that the wireless transmitter module includes compiling Code chip, the Vcc pin of the collector connection coding chip of triode Q1, the Dout pin of coding chip connect transmitting antenna, D0 pin, D1 pin, D2 pin and the D3 pin of coding chip are separately connected the first output end of three sections of knob SA, the second output It holds, the second output terminal of third output end and two sections of switch S2.

4. the wireless polarity tester of mutual inductor according to claim 3, characterized in that the measurement module includes microampere Table, positive test pencil and negative test pencil, the button S1 are placed on positive test pencil, and the first interface of positive test pencil is audio interface, and connection is mutual One end of sensor secondary side, second interface connect an input terminal of microampere meter, and the first interface connection mutual inductor of negative test pencil is secondary The other end of side, second interface connect another input terminal of microampere meter.

5. the wireless polarity tester of mutual inductor according to claim 1, characterized in that the signal output module includes electricity It flows output circuit and voltage follower circuit, the signal-adjusting module includes current regulating circuit and voltage regulator circuit；It is described Wireless receiving module includes decoding chip, and the D0 pin of decoding chip, D1 pin connect current output circuit with D2 pin, is decoded The D3 pin of chip connects voltage follower circuit, and the VCC pin of decoding chip connects 5V power supply, and the VSS pin of decoding chip connects Ground, the OSV1 pin of decoding chip are connected by resistance R16 with OSV2 pin, the VT pin of decoding chip pass through resistance R15 and The GND pin for receiving chip is connected, and the DIN pin connection of decoding chip receives the DATA pin and DATA1 pin of chip, receives The VCC pin of chip connects 5V power supply, receives the TX pin connection receiving antenna of chip.

6. the wireless polarity tester of mutual inductor according to claim 5, characterized in that the voltage follower circuit includes electricity R1, the D3 pin of one end connection decoding chip of resistance R1 are hindered, the other end of resistance R1 is separately connected one end and three of resistance R2 The base stage of pole pipe Q2, the other end of resistance R2 and the emitter of triode Q2 are grounded, and the collector of triode Q2 is separately connected One end, one end of relay K2 coil and the anode of diode D1 of electromagnetic type relay K1 coil, electromagnetic type relay K1 line The other end, the other end of 2 coil of relay and the cathode of diode D1 of circle are all connected with power supply VCC, electromagnetic type relay K1 touching One end of point connects the port V3, and the other end is separately connected the port VN or the port V2, and one end of 2 contact of relay connects power supply VCC, The other end connects deferred action circuit by the port V0.

7. the wireless polarity tester of mutual inductor according to claim 6, characterized in that the deferred action circuit include after One end of electric appliance K6, the relay K6 coil are separately connected one end of the port V0, the cathode of diode D6 and resistance R3, relay The other end of device K6 coil is separately connected the collector of triode Q6 and the anode of diode D6, and the emitter of triode Q6 connects Ground, the base stage of triode Q6 are separately connected one end of resistance R11 and the anode of voltage-stabiliser tube DO1, and the cathode of voltage-stabiliser tube DO1 connects respectively The other end of connecting resistance R3 and one end of capacitor C1, the other end of capacitor C1 and the other end of resistance R11 are grounded, relay K6 One end of contact connects the port V0, and the other end of the contact relay K6 connects voltage regulator circuit by the port V1.

8. the wireless polarity tester of mutual inductor according to claim 5, characterized in that the current output circuit includes A Phase current output circuit, B phase current output circuit and C phase current output circuit, the A phase current output circuit includes resistance R5, the resistance R5 one end connection decoding chip D0 pin, the other end of resistance R5 be separately connected resistance R6 one end and The base stage of triode Q3, the other end of resistance R6 and the emitter of triode Q3 are grounded, and the collector of triode Q3 connects respectively One end of contact relay K3 coil and the anode of diode D3, the other end of relay K3 coil and the cathode of diode D3 connect Power supply VCC is met, one end of the contact relay K3 connects current regulating circuit, and the other end connects the port IA；

The B phase current output circuit includes resistance R7, the D1 pin of one end connection decoding chip of the resistance R7, the other end It is separately connected one end of resistance R8 and the base stage of triode Q4, the other end of resistance R8 and the emitter of triode Q4 are grounded, The collector of triode Q4 is separately connected one end of relay K4 coil and the anode of diode D4, relay K4 coil it is another The cathode of end and diode D4 are all connected with power supply VCC, and one end of the contact relay K4 connects current regulating circuit, other end connection The port IB；

The C phase current output circuit includes resistance R9, the D2 pin of one end connection decoding chip of the resistance R9, the other end It is separately connected one end of resistance R10 and the base stage of triode Q5, the other end of resistance R10 and the emitter of triode Q5 connect Ground, the collector of triode Q5 are separately connected one end of relay K5 coil and the anode of diode D5, relay K5 coil The cathode of the other end and diode D5 are all connected with power supply VCC, and one end of the contact relay K5 connects current regulating circuit, the other end Connect the port IC.

9. the wireless polarity tester of mutual inductor according to claim 1-8, characterized in that the tester also wraps Wrist strap, pedestal, the first rotating part and the second rotating part are included, the pedestal is fixedly connected on wrist strap, card slot is set on pedestal, the The buckle being cooperatively connected with card slot is set on one rotating part, and first rotating part is rotated vertically by being buckled in card slot, institute It states the second rotating part to be fixedly connected with test equipment, the second rotating part and the first rotating part are rotatablely connected by screw rod.