CN106093763A

CN106093763A - Tester

Info

Publication number: CN106093763A
Application number: CN201610393623.9A
Authority: CN
Inventors: 胡小青
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-07-27
Filing date: 2012-07-27
Publication date: 2016-11-09
Also published as: CN106124974B; CN106124974A; CN105866674A; CN106168648A; CN106168649A; CN105891709A; CN106093764A; CN105866673A; CN102759709A; CN105866676A

Abstract

The present invention relates to a kind of tester, including have the first live wire end and the AC power circuit of the second live wire end, for the phase generating circuit being connected with the fire wire output end of equipment under test, regulate circuit and time detection circuit；First live wire end and the second live wire end are for being connected with the live wire input of equipment under test, and the zero line side of described load circuit is for being connected with the zero line side of equipment under test；Phase generating circuit includes control knob circuit, and control knob circuit generates respectively to produce meet the test electric current of national standard for controlling phase generating circuit.The present invention tests scope relatively extensively, and performance is relatively stable reliably.

Description

Tester

Technical field

The present invention relates to a kind of tester.

Background technology

According to standard GB/T 14048.2-2001, the regulation such as GB16916.1-2003, GB16917.1-2003: to no matter It is the residue pulsating direct current with regulation or residue simple sinusoidal alternating current applying suddenly or slowly rising, can ensure that when regulation The interior RCCB threaded off is referred to as A type RCCB.Either applying suddenly or slow rising are had without direct current The residue 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 " the residue pulsating current of regulation " is following 4 kinds of situations: the half-wave rectified current of current lagging voltage 0, electricity The stream half-wave rectified current of lagging voltage 90, the half-wave rectified current of current lagging voltage 135, electric current containing 6mA direct current The half-wave rectified current of lagging voltage 0.

Prior art does not exist the device measuring A type RCCB.

Summary of the invention

The technical problem to be solved is to provide a kind of test scope compared with wide and the relatively stable reliable use of performance Tester in test RCCB.

For solving above-mentioned technical problem, the invention provides a kind of tester, including: AC power circuit, direct current supply Circuit, phase generating circuit, ac leakage regulation circuit, phase place display circuit, indicator light circuit and time detection circuit；

AC power circuit has the first live wire end for constituting load circuit and for constituting the second of simulation loop of electric leakage Live wire end, the first live wire end and the second live wire end are used for being connected with the live wire input of equipment under test, the zero of described load circuit Line end is for being connected with the zero line side of equipment under test；Described equipment under test is A type RCCB；

Phase generating circuit, for being connected with the fire wire output end of equipment under test；Phase generating circuit includes control knob circuit, Control knob circuit generates current lagging voltage 0 for controlling phase generating circuit in described simulation loop of electric leakage respectively Half-wave rectified current, the half-wave rectified current of current lagging voltage 90, the half-wave rectified current of current lagging voltage 135 and contain There is the half-wave rectified current of the current lagging voltage 0 of 6mA direct current；

Described phase generating circuit includes: the 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 Current control circuit；Described controllable silicon current control circuit is according to described first half-wave rectifying circuit, the second half-wave rectifying circuit In described simulation loop of electric leakage, current lagging voltage 0 is generated respectively with the control signal of the 3rd half-wave rectifying circuit output Half-wave rectified current, the half-wave rectified current of current lagging voltage 90, the half-wave rectified current of current lagging voltage 135 and contain There is the half-wave rectified current of the current lagging voltage 0 of 6mA 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, resistance R11, potentiometer WR1 and operational amplifier IC1B；Sine wave shaped electricity routing transformer T2, two Pole pipe D5, resistance R3, resistance R4, resistance R5, resistance R6, resistance R7 and operational amplifier IC1A are constituted；Charged electrical routing resistance R8 and electric capacity C5 is constituted, and resistance R8 is connected with the outfan of electric capacity C5 with operational amplifier IC1A；With door by diode D6 and D7 Constitute；Resistance R9 and resistance R10 is used for setting the voltage of adjusting relative to current lagging voltage 135；Resistance R11 and potentiometer WR1 is used for regulating the comparison voltage relative to current lagging voltage 135 of the backward end of operational amplifier IC1B；Operation amplifier The outfan of device IC1B is for exporting the control signal of current lagging voltage 135；

Ac leakage regulation circuit, for controlling the size of current of described simulation loop of electric leakage；

Time detection circuit, is conducted to the time needed for A type RCCB is threaded off for measuring from described simulation loop of electric leakage, I.e. movement time；

Described time detection circuit includes: single-chip microcomputer IC6, being used for of being connected with the detection of electrical leakage end of single-chip microcomputer IC6 detect described The simulation leakaging signal detecting circuit that whether turns on of loop of electric leakage and being connected with the temporal information outfan of single-chip microcomputer IC6 For showing the charactron of time；The electric leakage signal that single-chip microcomputer IC6 exports according to leakaging signal detecting circuit is measured from described mould Intend loop of electric leakage and be conducted to the time needed for A type RCCB is threaded off and by this time of described numeral method；

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 sheet IC7,6 feet are connected with press button SB3 intermediate contact SB3-21, normally opened contact SB3-22 respectively.

The present invention has positive effect: the tester of (1) present invention includes: AC power circuit, DC power-supply circuit, Phase generating circuit, ac leakage regulation circuit, phase place display circuit, indicator light circuit, time detection circuit.Described tester Can be to the residual current value of A type RCCB with measure movement time.

Accompanying drawing explanation

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

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

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

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

Detailed description of the invention

(embodiment 1)

See that Fig. 1-3, the present embodiment are a kind of testers for testing RCCB, including: AC power circuit 1, direct current Power supply circuits 7, phase generating circuit 2, ac leakage regulation circuit 3, phase place display circuit 6, indicator light circuit 5 and time detecting Circuit 4.

AC power circuit 1 has the first live wire end for constituting load circuit and for constituting simulation loop of electric leakage Second live wire end, the first live wire end and the second live wire end are used for being connected with the live wire input of equipment under test 9, described load circuit Zero line side for being 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 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 and generates current hysteresis respectively in described simulation loop of electric leakage The half-wave rectified current of rear 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 0 containing 6mA direct current.

Ac leakage regulation circuit 3 is for controlling the size of current of described simulation loop of electric leakage；Time detection circuit 4 is used for Measure and be conducted to the time needed for A type RCCB is threaded off, i.e. movement time from described simulation loop of electric leakage.

Described phase generating circuit 2 includes: the 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 exported according to described first half-wave rectifying circuit, the second half-wave rectifying circuit and the 3rd half-wave rectifying circuit Described simulation loop of electric leakage generates the half-wave rectified current of current lagging voltage 0, the half-wave of current lagging voltage 90 respectively The half-wave of rectified current, the half-wave rectified current of current lagging voltage 135 and the current lagging voltage 0 containing 6mA direct current 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, with the outfan of operational amplifier IC1A Be connected the 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 relative to electricity Resistance R9 and R10 of voltage of adjusting of stream lagging voltage 135, be used for regulating operational amplifier IC1B backward end relative to The resistance R11 and potentiometer WR1 of the comparison voltage of current lagging voltage 135, 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 press button SB1, resistance R58 Pipe BG18 drives opto-coupler chip IC4, resistance R59 to be current-limiting resistances, 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, the turn-on and turn-off of control bidirectional triode thyristor BG19, resistance R60, R61, for controlling the G pole input current of bidirectional triode thyristor BG19, makes input signal enough trigger bidirectional triode thyristor BG19 conducting. Bidirectional triode thyristor BG19 A, K bis-pole be connected on load with alternating current power supply between, the electric current flowing through load lags behind voltage exactly The half-wave rectified current of 135.Control bidirectional triode thyristor BG19 can control, by the residue pulsating current specified in circuit, to adjust Nodal potential device WR3, WR4, WR5 can control leakage current.

When press button SB10 closes, two intermediate contacts of press button 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 control signal of the 3rd half-wave rectifying circuit output and the audion BG18 turned on, the opto-coupler chip that driven by audion BG18 IC4, opto-coupler chip IC4 A, K pole of the bidirectional triode thyristor BG19, bidirectional triode thyristor BG19 that control break-make is connected on described simulation In loop of electric leakage.

Described time detection circuit 4 includes: single-chip microcomputer IC6, being used for of being connected with the detection of electrical leakage end of single-chip microcomputer IC6 detect Leakaging signal detecting circuit that whether described simulation loop of electric leakage turns on and the temporal information outfan phase with single-chip microcomputer IC6 The charactron for showing the time even；The electric leakage signal that single-chip microcomputer IC6 exports according to leakaging signal detecting circuit is measured from institute State simulation loop of electric leakage and be conducted to the time needed for A type RCCB is threaded off and by this time of described numeral method.

Described phase generating circuit 2 connects with the presence of for showing the half of described simulation loop of electric leakage current lagging voltage 0 Ripple rectified current or the half-wave rectified current of current lagging voltage 90 or the half-wave rectified current of current lagging voltage 135 or contain There is the phase place display circuit 6 of the half-wave rectified current of the current lagging voltage 0 of 6mA direct current.

AC power circuit by 220V 50Hz alternating current power supply supply electricity to transformator T4, transformator T4 output 180V, 220V, 250V, 380V voltage is connected to exchange on output wiring terminal L1, N through band switch SA1.Shelves by adjusting band switch SA1 Position, can change exchange output wiring terminal L1 and the voltage at N two ends.The load of transformator T4 is that ac leakage regulates circuit 3.

Ac leakage regulation circuit 3 is exported 26V alternating current by transformator T4, and its outfan one end is gone here and there with band switch SA2 Connection is followed by exchange output wiring terminal L1, the other end and ammeter, electric leakage regulation resistance, bidirectional triode thyristor BG19, band switch After SA3 series connection, it is connected to exchange output wiring terminal L2.

The logic electricity that phase place display circuit 6 is made up of charactron LED1-LED4, diode D11-36, audion BG7-16 Road, press button 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 ", and charactron LED2 shows " C ".When pressing the button switch SB3, digital Pipe LED1, LED4 show " A0 "；Pressing the button switch SB2, charactron LED1, LED3, LED4 show " A90 "；Press the button Switch SB5, charactron LED1, LED2, LED3, LED4 show " A0-6 ".

Indicator light circuit 5 is made up of transformator T4, commutation diode D42-45, three terminal regulator BG27, RC filter circuit. DC power-supply circuit 7 includes: the 5V DC power-supply circuit powered by transformator T1, the 5V direct current supply powered by transformator T3 electricity Road, 12V DC power-supply circuit, 6mA direct current generative circuit.

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

6mA direct current generative circuit is made up of resistance R67,9V aneroid battery Bt, press button SB5, SB6.One end of resistance R67 Being connected with the positive pole of 9V aneroid battery U, the other end of resistance R67 is connected with the intermediate contact of press button SB5, press button SB5 Normally opened contact be connected with normally opened contact, the normally-closed contact of press button SB6,9V dry battery cathode connects the normal of press button SB6 Open contact, normally opened contact is connected, the intermediate contact of press button SB6 and direct current output wiring terminal "+" be connected, press button SB6 Intermediate contact SB6-21 and direct current output "-" be connected.

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 Constitute to controllable silicon BG19, operational amplifier IC2, opto-coupler chip IC4, potentiometer WR2.

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, the 4 of opto-coupler chip IC7,6 feet respectively with press button SB3 intermediate contact SB3-21, Normally opened contact SB3-22 is connected.Because of " the residue pulsating current of regulation " has current lagging voltage 0 containing the half of 6mA direct current 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.Press button SB17 is testing button, and press button SB18 is SR.

When press button 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 turn off, 3 feet of single-chip microcomputer IC6 have high level to input, and single-chip microcomputer IC6 stops timing and exports data and show to charactron LED11.When pressing When button switch SB18 presses, single-chip microcomputer IC6, charactron LED11 reset.

Above-described embodiment is only for clearly demonstrating 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, can also be made other on the basis of the above description different The change of form or variation.Here without also cannot all of embodiment be given exhaustive.And these belong to the essence of the present invention What god was extended out obviously changes or changes among still in protection scope of the present invention.

Claims

1. a tester, it is characterised in that including: AC power circuit (1), DC power-supply circuit (7), phase generating circuit (2), ac leakage regulation circuit (3), phase place display circuit (6), indicator light circuit (5) and time detection circuit (4)；

AC power circuit (1) has the first live wire end for constituting load circuit and for constituting the of simulation loop of electric leakage Two live wire ends, the first live wire end and the second live wire end are used for being connected with the live wire input of equipment under test (9), described load circuit Zero line side for being connected with the zero line side of equipment under test (9)；Described equipment under test is A type RCCB；

Phase generating circuit (2), for being connected with the fire wire output end (L2) of equipment under test (9)；Phase generating circuit (2) includes Control knob circuit, control knob circuit is used for controlling phase generating circuit (2) and generates respectively in described simulation loop of electric leakage The half-wave rectified current of current lagging voltage 0, the half-wave rectified current of current lagging voltage 90, current lagging voltage 135 Half-wave rectified current and the half-wave rectified current of the current lagging voltage 0 containing 6mA direct current；

Described phase generating circuit (2) including: the 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 Jike Control silicon current control circuit；Described controllable silicon current control circuit is according to described first half-wave rectifying circuit, the second halfwave rectifier The control signal of circuit and the output of the 3rd half-wave rectifying circuit generates current lagging voltage 0 in described simulation loop of electric leakage respectively Half-wave rectified current, the half-wave rectified current of current lagging voltage 90, the half-wave rectified current of current lagging voltage 135 Half-wave rectified current with the current lagging voltage 0 containing 6mA direct current；

Ac leakage regulation circuit (3), for controlling the size of current of described simulation loop of electric leakage；

Time detection circuit (4), for measure from described simulation loop of electric leakage be conducted to A type RCCB thread off needed for time Between, i.e. movement time；

Described time detection circuit (4) including: single-chip microcomputer IC6, being used for of being connected with the detection of electrical leakage end of single-chip microcomputer IC6 detect institute State the simulation leakaging signal detecting circuit that whether turns on of loop of electric leakage and be connected with the temporal information outfan of single-chip microcomputer IC6 For showing the charactron of time；The electric leakage signal that single-chip microcomputer IC6 exports according to leakaging signal detecting circuit is measured from described Simulation loop of electric leakage is conducted to the time needed for A type RCCB is threaded off and by this time of described numeral method；