CN106443425A

CN106443425A - Test device for detecting residual-current circuit breaker

Info

Publication number: CN106443425A
Application number: CN201510884056.2A
Authority: CN
Inventors: 高超
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-07-27
Filing date: 2012-07-27
Publication date: 2017-02-22
Also published as: CN106443424A; CN105301493A; CN105548870A; CN102749580B; CN105510817A; CN102749580A; CN105589031A; CN105589032A; CN105548869A; CN105425146A

Abstract

The present invention relates to a test device for detecting a residual-current circuit breaker. The device comprises an alternating current power supply circuit, a phase generation circuit, an alternating current leakage regulation circuit and a time detection circuit; the phase generation circuit includes a third half-wave rectifying circuit which includes a sine wave shaping circuit formed by a transformer T2, a diode D5, resistors R3, R5, R6 and R7 and an operational amplifier IC1A, a charging circuit formed by a resistor R8 and a capacitor C5 and connected with the output end of the operational amplifier IC1A, and a conjunction gate formed by diodes D6 and D7; and resistors R9, R10 and R11 and a potentiometer WR1 are configured to set the setting voltage relative to the current lagging voltage 135 degrees, and the output end of the operation amplifier IC1B is configured to output the control signals of the current lagging voltage 135 degrees. The test device for detecting the residual-current circuit breaker is reasonable in structure and can satisfy the users' special requirements.

Description

A kind of test equipment that RCCB is detected

The application be the applying date be " on 07 27th, 2012 ", Application No. " 2012102624890 ", entitled " to leakage The divisional application of the application for a patent for invention of the test equipment that electrical circuit breakers are detected ".

Technical field

The present invention relates to a kind of test equipment, more particularly, to a kind of test equipment that RCCB is detected.

Background technology

According to standard GB/T 14048.2-2001, GB16916.1-2003, GB16917.1-2003 etc. specify：To no matter It is unexpected remaining pulsating direct current or the residue simple sinusoidal alternating current with regulation applying or slowly rising, can ensure that in regulation The RCCB of interior dropout is referred to as A type RCCB.To either apply suddenly or slow rise there is no direct current The remaining simple sinusoidal alternating current of component, can ensure that the RCCB threaded off at the appointed time, referred to as AC type RCCB. From the foregoing, it will be observed that A type RCCB covers the function of AC type RCCB.

Above-mentioned " remaining pulsating current of regulation " is following 4 kinds of situations：The half-wave rectified current of current lagging voltage 0, electricity The half-wave rectified current of stream lagging voltage 90, the half-wave rectified current of current lagging voltage 135, the electric current containing 6mA direct current The half-wave rectified current of lagging voltage 0.

There is not the device that A type RCCB is measured in prior art.

Content of the invention

The technical problem to be solved is to provide a kind of test scope compared with wide and performance is relatively stable reliably right The test equipment that RCCB is detected.

For solving above-mentioned technical problem, the invention provides a kind of test equipment that RCCB is detected, bag Include AC power circuit, DC power-supply circuit, phase generating circuit, ac leakage regulation circuit, phase place display circuit and time Testing circuit；It is characterized in that：AC power circuit has the first zero line for constituting load circuit and is used for constituting mould Intend the second zero line of loop of electric leakage, the first zero line is used for being connected with the live wire input of equipment under test with the second zero line, The zero line side of described load circuit is used for being connected with the zero line side of equipment under test；Described equipment under test is A type RCCB；Phase Position is produced circuit and is used for being connected with the fire wire output end of equipment under test；Phase generating circuit includes control knob circuit, and control is pressed The half-wave that button circuit is used for controlling phase generating circuit to generate current lagging voltage 0 in described simulation loop of electric leakage respectively is whole Flow electric current, the half-wave rectified current of current lagging voltage 90, the half-wave rectified current of current lagging voltage 135 and contain 6mA The half-wave rectified current of the current lagging voltage 0 of direct current；Ac leakage adjusts circuit and is used for controlling described simulation loop of electric leakage Size of current；Time detection circuit is used for measurement and is conducted to needed for A type RCCB is threaded off from described simulation loop of electric leakage Time, i.e. movement time；

Described phase generating circuit includes：First half-wave rectifying circuit of current lagging voltage 0, the of current lagging voltage 90 Two half-wave rectifying circuits, the 3rd half-wave rectifying circuit of current lagging voltage 135,6mA direct current generative circuit and controllable silicon electricity Flow control circuit；Controllable silicon current control circuit is according to described first half-wave rectifying circuit, the second half-wave rectifying circuit and the 3rd The half-wave that the control signal of half-wave rectifying circuit output generates current lagging voltage 0 in described simulation loop of electric leakage respectively is whole Flow electric current, the half-wave rectified current of current lagging voltage 90, the half-wave rectified current of current lagging voltage 135 and contain 6mA The half-wave rectified current of the current lagging voltage 0 of direct current；

3rd half-wave rectifying circuit of described current lagging voltage 135 includes：Sine wave shaped circuit, charging circuit and door, Resistance R9, resistance R10, operational amplifier IC1B, resistance R11, potentiometer WR1, audion BG3, resistance R12, R13, button are opened Close SB1, resistance R58, audion BG18, opto-coupler chip IC4, resistance R59, bidirectional triode thyristor BG19, resistance R60 and resistance R61；

Sine wave shaped electricity routing transformer T2, diode D5, resistance R3, resistance R4, resistance R5, resistance R6, resistance R7 and fortune Calculate amplifier IC1A to constitute；

Charging circuit is made up of resistance R8 and electric capacity C5, the resistance R8 and electric capacity C5 outfan phase with operational amplifier IC1A successively Even；

It is made up of diode D6 and D7 with door, the negative pole connecting resistance R8 of diode D6, the positive pole of diode D6 connects operational amplifier The positive pole of IC1B；The negative pole of diode D7 connects the outfan of operational amplifier IC1A, resistance R9 and the respective input of resistance R10 Connect the positive pole of diode D7, resistance R9 and resistance R10 is used for setting the voltage of adjusting with respect to current lagging voltage 135；

The outfan of the input terminating resistor R9 of resistance R11, the output of resistance R11 terminates the reverse input of operational amplifier IC1B End；The reverse input end of the one termination operational amplifier IC1B of potentiometer WR1；Resistance R11 and potentiometer WR1 is used for adjusting computing The comparison voltage with respect to current lagging voltage 135 of the reverse input end of amplifier IC1B；

The base stage of audion BG3 connects the outfan of operational amplifier IC1B by resistance R12, and the emitter stage of audion BG3 connects electricity The input of resistance R11 and button switch SB1, input, audion BG3 and the resistance of the emitter stage connecting resistance R13 of audion BG3 R13 constitutes emitter follower；The adjustable side of potentiometer WR1 is all connected with the outfan of resistance R13 with the outfan of resistance R10； Resistance R12 is used as the current-limiting resistance of audion BG3 base stage；

The outfan of operational amplifier IC1B is used for the control signal of output current lagging voltage 135；Electric current on resistance R13 The control signal of lagging voltage 135 gives audion BG18 by button switch SB1, resistance R58, and audion BG18 drives light Coupling chip IC 4, resistance R59 is to carry out the current-limiting resistance of current limliting it is ensured that opto-coupler chip IC4 effectively works to opto-coupler chip IC4；Light Coupling chip IC 4, in order to isolate alternating current 220V and phase generating circuit direct current component, controls conducting and the pass of bidirectional triode thyristor BG19 Disconnected, resistance R60 and resistance R61 is used for controlling the G pole input current of bidirectional triode thyristor BG19, so that input signal is triggered enough two-way Controllable silicon BG19 turns on；A, K bis- pole of bidirectional triode thyristor BG19 is connected between load and alternating current power supply, flows through the electric current of load Exactly lag behind the half-wave rectified current of voltage 135；

Bidirectional triode thyristor BG19 is controlled to get final product the remaining pulsating current by regulation, regulator potentiometer WR3, WR4 in control circuit Control leakage current with WR5；When button switch SB10 closes, two intermediate contacts of button switch SB10 are used for phase place and produce The detection of raw circuit output waveform；Described controllable silicon current control circuit includes：According to described first half-wave rectifying circuit, second Half-wave rectifying circuit and the 3rd half-wave rectifying circuit output control signal and turn on audion BG18, driven by audion BG18 Dynamic opto-coupler chip IC4, is controlled the bidirectional triode thyristor BG19 of break-make, A, K pole string of bidirectional triode thyristor BG19 by opto-coupler chip IC4 It is associated in described simulation loop of electric leakage；

First half-wave rectifying circuit of current lagging voltage 0 is by resistance R50, resistance R51, resistance R52, resistance R53, resistance R54, resistance R55, resistance R56, resistance R57, resistance R58, resistance R59, resistance R60, resistance R61, diode D37, audion BG17, audion BG18, bidirectional triode thyristor BG19, operational amplifier IC3 and opto-coupler chip IC4 are constituted；The positive pole of diode D51 End is extremely connected with the e of the audion BG22 in phase place display circuit, and the negative pole end of diode D51 is connected with one end of resistance R75, The other end of resistance R75 is extremely connected with the b of audion BG28, and 2 feet of opto-coupler chip IC7 are extremely connected with the c of audion BG28, and three The e pole of pole pipe BG28 is connected with 2 feet of stabilivolt BG21；One end of resistance R74 is connected with 3 feet of stabilivolt BG21, optocoupler core The 4 of piece IC7,6 feet are connected with button switch SB3 intermediate contact SB3-21, normally opened contact SB3-22 respectively.

The present invention has positive effect：（1）The present invention passes through to improve the 3rd half-wave rectifying circuit so as to structure is more closed Reason, can effectively meet the testing requirement of special RCCB.

Brief description

Below in conjunction with accompanying drawing, the present invention is further explained, wherein accompanying drawing is as follows：

Fig. 1 is the contour structures schematic diagram of the test equipment of embodiment 1；

Fig. 2 is the part electrical schematic diagram of the test equipment of embodiment 1；

Fig. 3 is another part electrical schematic diagram of the test equipment of embodiment 1.

Specific embodiment

（Embodiment 1）

See Fig. 1-3, the present embodiment is a kind of inclusion for testing RCCB, including：AC power circuit 1, direct current supply Circuit 7, phase generating circuit 2, ac leakage adjust circuit 3, phase place display circuit 6, indicator light circuit 5 and time detecting electricity Road 4.

AC power circuit 1 has the first zero line for constituting load circuit and simulates loop of electric leakage for constituting Second zero line, the first zero line and the second zero line are used for being connected with the live wire input of equipment under test 9, described load circuit Zero line side be used for be connected with the zero line side of equipment under test 9.In the present embodiment, equipment under test 9 is A type RCCB.

Phase generating circuit 2 is used for being connected with fire wire output end L2 of equipment under test 9；Phase generating circuit 2 includes controlling Button circuit, control knob circuit is used for controlling phase generating circuit 2 to generate current hysteresis respectively in described simulation loop of electric leakage Afterwards the half-wave rectified current of voltage 0, the half-wave rectified current of current lagging voltage 90, current lagging voltage 135 half-wave whole Stream electric current and the half-wave rectified current of the current lagging voltage containing 6mA direct current 0.

Ac leakage adjusts circuit 3 and is used for controlling the size of current of described simulation loop of electric leakage；Time detection circuit 4 is used for Measurement is conducted to A type RCCB from described simulation loop of electric leakage and threads off the required time, i.e. movement time.

Described phase generating circuit 2 includes：First half-wave rectifying circuit of current lagging voltage 0, current lagging voltage 90 The second half-wave rectifying circuit, the 3rd half-wave rectifying circuit of current lagging voltage 135,6mA direct current generative circuit, Yi Jiyong Exist in the control signal being exported according to described first half-wave rectifying circuit, the second half-wave rectifying circuit and the 3rd half-wave rectifying circuit Half-wave rectified current, the half-wave of current lagging voltage 90 of current lagging voltage 0 is generated respectively in described simulation loop of electric leakage The half-wave of rectified current, the half-wave rectified current of current lagging voltage 135 and the current lagging voltage containing 6mA direct current 0 is whole The controllable silicon current control circuit of stream electric current.

3rd half-wave rectifying circuit of described current lagging voltage 135 includes：By transformator T2, diode D5, resistance The sine wave shaped that R3, R4, R5, R6, R7 are constituted with operational amplifier IC1A becomes circuit, the outfan with operational amplifier IC1A The connected charging circuit being made up of resistance R8, electric capacity C5, be made up of diode D6, D7 with door；It is used for setting with respect to electricity Stream lagging voltage 135 voltage of adjusting resistance R9 and R10, for adjust operational amplifier IC1B backward end with respect to The resistance R11 of the comparison voltage of current lagging voltage 135 and potentiometer WR1, the outfan of operational amplifier IC1B is used for exporting The control signal of current lagging voltage 135.

Resistance R12 is the current-limiting resistance of audion BG3 base stage, and audion BG3 and resistance R13 constitutes emitter follower, electricity The control signal of the current lagging voltage 135 on resistance R13 gives audion BG18, three poles by button switch SB1, resistance R58 Pipe BG18 drives opto-coupler chip IC4, and resistance R59 is current-limiting resistance it is ensured that opto-coupler chip IC4 effectively works.Opto-coupler chip IC4 uses To isolate alternating current 220V and phase generating circuit direct current component, control the turn-on and turn-off of bidirectional triode thyristor BG19, resistance R60, R61 is used for controlling the G pole input current of bidirectional triode thyristor BG19, makes input signal trigger bidirectional triode thyristor BG19 conducting enough. A, K bis- pole of bidirectional triode thyristor BG19 is connected between load and alternating current power supply, and the electric current flowing through load is exactly to lag behind voltage 135 half-wave rectified current.Control bidirectional triode thyristor BG19 to get final product the remaining pulsating current by regulation in control circuit, adjust Nodal potential device WR3, WR4, WR5 can control leakage current.

When button switch SB10 closes, two intermediate contacts of button switch SB10 are used for phase generating circuit output wave The detection of shape.

Described controllable silicon current control circuit includes：According to described first half-wave rectifying circuit, the second half-wave rectifying circuit With the 3rd half-wave rectifying circuit output control signal and the audion BG18 turning on, the opto-coupler chip being driven by audion BG18 IC4, is controlled the bidirectional triode thyristor BG19 of break-make, A, K pole of bidirectional triode thyristor BG19 is connected on described simulation by opto-coupler chip IC4 In loop of electric leakage.

1. described time detection circuit 4 includes：Single-chip microcomputer IC6, be connected with the detection of electrical leakage end of single-chip microcomputer IC6 for examining Survey leakaging signal detecting circuit and the temporal information outfan with single-chip microcomputer IC6 whether described simulation loop of electric leakage turns on The connected charactron for showing the time；The electric leakage signal measurement that single-chip microcomputer IC6 exports according to leakaging signal detecting circuit from Described simulation loop of electric leakage is conducted to the time needed for A type RCCB is threaded off and passes through this time of described numeral method.

2. described phase generating circuit 2 be connected with for show described simulation loop of electric leakage there is current lagging voltage 0 The half-wave rectified current of the half-wave rectified current of half-wave rectified current or current lagging voltage 90 or current lagging voltage 135 or The phase place display circuit 6 of the half-wave rectified current of current lagging voltage 0 containing 6mA direct current.

3. AC power circuit supplies electricity to transformator T4 by 220V 50Hz alternating current power supply, transformator T4 output 180V, 220V, 250V, 380V voltage connects to exchange output wiring terminal L1, N through band switch SA1.By adjusting band switch SA1 Gear, can change exchange output wiring terminal L1 and N two ends voltage.The load of transformator T4 is that ac leakage adjusts circuit 3.

4. ac leakage adjusts circuit 3 and exports 26V alternating current, its outfan one end and band switch SA2 by transformator T4 Series connection is followed by exchange output wiring terminal L1, and the other end and ammeter, electric leakage regulation resistance, bidirectional triode thyristor BG19, wave band are opened After closing SA3 series connection, connect to exchange output wiring terminal L2.

5. the logic that phase place display circuit 6 is made up of charactron LED1-LED4, diode D11-36, audion BG7-16 Circuit, button switch composition.

When pressing the button switch SB4, current signal trigger triode BG20 turns on, and audion BG20 output signal triggers Audion BG7, BG8 turn on, and charactron LED1 shows " A ", charactron LED2 shows " C ".When pressing the button switch SB3, digital Pipe LED1, LED4 show " A0 "；Press the button switch SB2, charactron LED1, LED3, LED4 show " A90 "；Press the button Switch SB5, charactron LED1, LED2, LED3, LED4 show " A0-6 ".

6. indicator light circuit 5 is by transformator T4, commutation diode D42-45, three terminal regulator BG27, RC filter circuit group Become.DC power-supply circuit 7 includes：The 5V DC power-supply circuit powered by transformator T1, the 5V direct current powered by transformator T3 supply Circuit, 12V DC power-supply circuit, 6mA direct current generative circuit.

Time detection circuit 4 by button switch, commutation diode D46-49, audion BG23-26, resistance, electric capacity C15, Photoelectrical coupler IC5, single-chip microcomputer IC6, charactron LED11 etc. form.

7. 6mA direct current generative circuit is made up of resistance R67,9V aneroid battery Bt, button switch SB5, SB6.The one of resistance R67 End is connected with the positive pole of 9V aneroid battery U, and the other end of resistance R67 is connected with the intermediate contact of button switch SB5, button switch The normally opened contact of SB5 is connected with the normally opened contact of button switch SB6, normally-closed contact, and 9V dry battery cathode connects button switch SB6's Normally opened contact, normally opened contact are connected, the intermediate contact of button switch SB6 and direct current output binding post "+" be connected, button switch The intermediate contact SB6-21 of SB6 is connected with direct current output "-".

8. the second half-wave rectifying circuit of current lagging voltage 90 by resistance R17, R18, R19, R20, R21, R22, R23, R24, R25, R26, R27, R57, R58, R59, R60, R61, electric capacity C6, diode D8, D9, D10, audion BG5, BG18, double To controllable silicon BG19, operational amplifier IC2, opto-coupler chip IC4, potentiometer WR2 are constituted.

9. the first half-wave rectifying circuit of current lagging voltage 0 by resistance R50, R51, R52, R53, R54, R55, R56, R57, R58, R59, R60, R61, diode D37, audion BG17, BG18, bidirectional triode thyristor BG19, operational amplifier IC3, light Coupling chip IC 4 is constituted.The positive terminal of diode D51 is extremely connected with the e of the audion BG22 in phase place display circuit, diode The negative pole end of D51 is connected with one end of resistance R75, and the other end of resistance R75 is extremely connected with the b of audion BG28, opto-coupler chip 2 feet of IC7 are extremely connected with the c of audion BG28, and the e pole of audion BG28 is connected with 2 feet of stabilivolt BG21.Resistance R74's One end is connected with 3 feet of stabilivolt BG21,4,6 feet of opto-coupler chip IC7 respectively with button switch SB3 intermediate contact SB3-21, Normally opened contact SB3-22 is connected.Because having containing 6mA direct current the half of current lagging voltage 0 in " the remaining pulsating current of regulation " Ripple rectified current, therefore this part is for realizing in the case of " A0-6 " it is ensured that the half-wave rectified current of current lagging voltage 0 Output.

Resistance R73, R77 are the current-limiting resistance of opto-coupler chip IC5, and resistance R78 is the current-limiting resistance of 1 foot of single-chip microcomputer IC6, Electric capacity C15, resistance R79 form peaker, and resistance R80, R81, R82, R83, R84, R85, R86, R87 are charactron LED11 The current-limiting resistance of each pin, resistance R88, R89, R90, R91 are the current limliting electricity of the b pole of audion BG23, BG24, BG25, BG26 Resistance.Button switch SB17 is testing button, and button switch SB18 is SR.

When button switch SB17 closes, breaker electrifying, DC current forms a spike, input through peaker 1 foot of single-chip microcomputer IC6, single-chip microcomputer IC6 starts timing.When circuit breaker trip, opto-coupler chip IC5 dead electricity, 4,6 feet shutoff, 3 feet of single-chip microcomputer IC6 have high level to input, and single-chip microcomputer IC6 stops timing and output data shows to charactron LED11.When pressing When button switch SB18 presses, single-chip microcomputer IC6, charactron LED11 reset.

Above-described embodiment is only intended to clearly illustrate example of the present invention, and is not the embodiment party to the present invention The restriction of formula.For those of ordinary skill in the field, other differences can also be made on the basis of the above description The change of form or variation.There is no need to be exhaustive to all of embodiment.And these belong to the essence of the present invention The obvious change extended out of god or variation still in protection scope of the present invention among.

Claims

1. a kind of test equipment that RCCB is detected, produces including AC power circuit, DC power-supply circuit, phase place Raw circuit, ac leakage adjust circuit, phase place display circuit and time detection circuit；It is characterized in that：AC power circuit has Have the first zero line for constituting load circuit and the second zero line for constituting simulation loop of electric leakage, the first zero line and Second zero line is used for being connected with the live wire input of equipment under test, and the zero line side of described load circuit is used for and equipment under test Zero line side is connected；Described equipment under test is A type RCCB；Phase generating circuit is used for the fire wire output end with equipment under test It is connected；Phase generating circuit includes control knob circuit, and control knob circuit is used for controlling phase generating circuit in described simulation Generate respectively in loop of electric leakage the half-wave rectified current of current lagging voltage 0, the half-wave rectified current of current lagging voltage 90, The half-wave rectified current of current lagging voltage 135 and the half-wave rectified current of the current lagging voltage containing 6mA direct current 0；Hand over Stream electric leakage adjusts circuit and is used for controlling the size of current of described simulation loop of electric leakage；Time detection circuit is used for measurement from described mould Intend loop of electric leakage and be conducted to A type RCCB dropout required time, i.e. movement time；