CN103676920B - A kind of ETU calibration instrument - Google Patents
A kind of ETU calibration instrument Download PDFInfo
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- CN103676920B CN103676920B CN201210326236.5A CN201210326236A CN103676920B CN 103676920 B CN103676920 B CN 103676920B CN 201210326236 A CN201210326236 A CN 201210326236A CN 103676920 B CN103676920 B CN 103676920B
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Abstract
The present invention relates to a kind of ETU calibration instrument, comprise power module, signaling module, verification control module and display measurement module, described power module connection signal mould block sum check control module, described verification control module connection signal module, for controlling the generation of checking signal, described signaling module is all connected with tested ETU with display measurement module, described signaling module is the signaling module that can export three-phase voltage signal simultaneously or export separately unidirectional voltage signal, this signaling module comprises four output terminals, be respectively A phase voltage signal, B phase voltage signal, the output terminal of C phase voltage signal and neutral voltage signal.Compared with prior art, the present invention has that function is complete, cost is low, accuracy of detection advantages of higher.
Description
Technical field
The present invention relates to a kind of isolating switch checkout equipment, especially relate to a kind of checkout equipment of the electronic controller for isolating switch.
Background technology
Frame circuit breaker (ACB) is the important electrical equipment of distribution system.In current ACB, the core component overwhelming majority is electronic controller (ETU).The quality of ETU directly determines that can ACB available protecting subscriber's line circuit.
How to verify ETU according to national standard, not yet have applicable tester at present, each manufacturer self manufacture is for the calibration equipment of respective product.The large multiplex pressure regulator manual adjustments voltage of each manufacturer calibration equipment does the signal input of ETU, and only has monophasic pulses, and when reality uses, ETU inputs three-phase current signal simultaneously, only detects with monophasic pulses, obviously do not conform to the actual conditions during detection.In addition, the method for manual adjustments voltage, is subject to external power source impact, when producing in batches, and unavoidable generation personal error even mistake.
Summary of the invention
Object of the present invention be exactly in order to overcome above-mentioned prior art exist defect and the ETU calibration instrument that a kind of function is complete, cost is low, accuracy of detection is high is provided.
Object of the present invention can be achieved through the following technical solutions:
A kind of ETU calibration instrument, comprise power module, signaling module, verification control module and display measurement module, described power module connection signal mould block sum check control module, described verification control module connection signal module, for controlling the generation of checking signal, described signaling module is all connected with tested ETU with display measurement module, described signaling module is the signaling module that can export three-phase voltage signal simultaneously or export separately unidirectional voltage signal, this signaling module comprises four output terminals, be respectively A phase voltage signal, B phase voltage signal, the output terminal of C phase voltage signal and neutral voltage signal.
Described signaling module comprises signal generating unit, voltage regulation unit and phase adjustment unit, described signal generating unit connects voltage regulation unit, and described voltage regulation unit comprises overload Long-time-delay circuit in parallel, overload short time delay circuit, short circuit momentary power and ground fault circuit, described phase adjustment unit comprises three A phase phase regulating circuits for exporting three-phase voltage signal in parallel, B phase phase regulating circuit and C phase phase regulating circuit, described overload Long-time-delay circuit, overload short time delay circuit is connected with phase adjustment unit with the output terminal after the parallel connection of short circuit momentary power, the A phase phase regulating circuit of phase adjustment unit, the output terminal of B phase phase regulating circuit and C phase phase regulating circuit respectively with the A phase input end of tested ETU, B phase input end is connected with C phase input end, and the output terminal of described ground fault circuit connects the zero line input end of tested ETU, carries Long-time-delay circuit, overload short time delay circuit, short circuit momentary power, ground fault circuit, A phase phase regulating circuit, B phase phase regulating circuit and C phase phase regulating circuit are all connected with the contact switch of the relay for control circuit break-make.
Described verification control module comprises measure-controlling unit and signaling control unit, described signaling control unit comprises the first switch, second switch and the first relay for contact switch in control signal module, second relay, 3rd relay, 4th relay, 5th relay, 6th relay, 7th relay, 8th relay and the 9th relay, the first described switch comprises at least 4 selector channel, 4 selector channel respectively with the first relay, second relay, 3rd relay is connected with the 4th relay, the second described switch comprises at least 5 selector channel, 5 selector channel respectively with the 5th relay, 6th relay, 7th relay, 8th relay is connected with the 9th relay.
The contact switch being connected to overload Long-time-delay circuit is the contact switch of the first relay, the contact being connected to overload short time delay circuit is the contact switch of the second relay, the contact being connected to short circuit momentary power is the contact switch of the 3rd relay, the contact switch being connected to ground fault circuit is the contact switch of the 4th relay and the 8th relay, the contact switch of the 4th relay and the 8th relay is arranged in series, the contact switch being connected to A phase phase regulating circuit is the contact switch of the 5th relay and the 9th relay, the contact switch of the 5th relay and the 9th relay is arranged in parallel, the contact switch being connected to B phase phase regulating circuit is the contact switch of the 6th relay and the 9th relay, the contact switch of the 6th relay and the 9th relay is arranged in parallel, the contact switch being connected to C phase phase regulating circuit is the contact switch of the 7th relay and the 9th relay, the contact switch of the 7th relay and the 9th relay is arranged in parallel.
The first described switch is all connected relay by resistance with triode with the selector channel of the second switch, one end of described resistance connects selector channel, the base stage of other end connecting triode, the grounded emitter of triode, collector connection relay.
Described display measurement module comprises voltage table and stopwatch, described voltage table respectively with A phase phase regulating circuit, B phase phase regulating circuit, C phase phase regulating circuit and output terminal be connected, described stopwatch is connected with the topworks of tested ETU.
Described power module comprises the transformer, bridge rectifier and the integrated regulator that connect successively, and described transformer connects AC power, carries out after rectification through bridge rectifier, input integrated regulator.
Described integrated regulator is provided with two output terminals, an output terminal connection signal control module, and another output terminal connects verification control module.
The input end of described transformer is provided with voltage protection device.
Compared with prior art, the present invention has the following advantages:
1) can export three-phase signal, operating mode when making to detect during more realistic use, can improve the precision of detection simultaneously.
2) output voltage all adopts electronic chip to regulate, and is not vulnerable to the impact of external power source, when producing in batches, being not easy generation and thinking error.
3) signaling module is according to the break-make of verification control module repeat circuit, can export for transshipping the voltage signal of the multiple detections such as the instantaneous and earth fault of long delay, overload short time delay, short circuit, and the signal of Reality simulation three-phase voltage can be obtained by phase adjusted, more realistic operating mode.
4) parts that the present invention adopts are the electronic devices and components of standard, and cost is low, reliable operation.
Accompanying drawing explanation
Fig. 1 is structured flowchart of the present invention;
Fig. 2 is the circuit diagram of power module and verification control module in the embodiment of the present invention;
Fig. 3 is the circuit diagram of signaling module and display measurement module in the embodiment of the present invention.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
Embodiment
As shown in Figure 1, a kind of ETU calibration instrument, comprises power module 2, signaling module 3, verification control module 1 and display measurement module 4.Power module 2 connection signal module 3 and verification control module 1, for it provides power supply, verification control module 1 connection signal module 3, for controlling the generation of checking signal, signaling module 3 is all connected with tested ETU5 with display measurement module 4, signaling module 3 is the signaling module that can export three-phase voltage signal simultaneously or export separately unidirectional voltage signal, this signaling module comprises four output terminals, is respectively the output terminal of A phase voltage signal, B phase voltage signal, C phase voltage signal and neutral voltage signal.
Verification control module 1 is formed primarily of measure-controlling unit and signaling control unit two parts, as shown in Figure 2.Measure-controlling unit comprises power switch KO, relay CJ0, CJ1, CJ2 and button AN0, AN1.AN2AN3, AN4, by the contact switch CJ0K of relay, CJ1K and CJ2K control signal control module, the break-make of the power supply of display measurement module 4 and tested ETU, signaling control unit then includes the first switch ZK1, second switch ZK2 and the first relay J 1 for contact switch in control signal module 3, second relay J 2, 3rd relay J 3, 4th relay J 4, 5th relay J 5, 6th relay J 6, 7th relay J 7, 8th relay J 8 and the 9th relay J 9, first switch ZK1 comprise 5 selector channel, and wherein 4 selector channel are respectively by resistance R1-R4 and triode T1-T4 and the first relay J 1, second relay J 2, 3rd relay J 3 is connected with the 4th relay J 4, and another selector channel puts sky, and the second switch ZK2 comprises 5 selector channel, 5 selector channel respectively resistance R5-R9 and triode T5-T9 with the 5th relay J 5, 6th relay J 6, 7th relay J 7, 8th relay J 8 is connected with the 9th relay J 9.One end of resistance connects selector channel, the base stage of other end connecting triode, the grounded emitter of triode, collector connection relay.
The concrete structure of signaling module 3 as shown in Figure 3, its circuit is made up of 5 chip IC 1-IC5 and peripheral circuit 15 electric capacity C1-C15 thereof, 27 resistance R10-R36 and 4 potentiometer VR1-VR4, comprises signal generating unit, voltage regulation unit and phase adjustment unit.Signal generating unit is the quiet function waveform generator adopting chip IC 1 and electric capacity C1-C4 and resistance R36 and potentiometer VR1 to form, for generation of original signal.This signal frequency 50Hz, output amplitude 2VP-P, sinusoidal wave degree of distortion≤0.75%, and there is overload protection function.Potentiometer VR1 carries out meticulous adjustment, and the alternating voltage of generation exports, through resistance R10 and electric capacity C5 input voltage regulation unit at IC1 the 19th pin.
This voltage regulation unit comprises overload Long-time-delay circuit 31 in parallel, overload short time delay circuit 32, short circuit momentary power 33 and ground fault circuit 34, phase adjustment unit comprises three A phase phase regulating circuits 35 for exporting three-phase voltage signal in parallel, B phase phase regulating circuit 36 and C phase phase regulating circuit 37, overload Long-time-delay circuit 31, overload short time delay circuit 32 is connected with phase adjustment unit with the output terminal after short circuit momentary power 33 parallel connection, the A phase phase regulating circuit 35 of phase adjustment unit, the output terminal of B phase phase regulating circuit 36 and C phase phase regulating circuit 37 respectively with the A phase input end IN-A of tested ETU5, B phase input end IN-B is connected with C phase input end IN-C, the output terminal of ground fault circuit 34 connects the zero line input end IN-N of tested ETU5.Wherein, carrying the chip IC 2-A of the Long-time-delay circuit 31 and chip IC 2-B of A phase phase regulating circuit 35 is integrated in chip IC 2, the overload chip IC 3-A of the short time delay circuit 32 and chip IC 3-B of B phase phase regulating circuit 36 is integrated in chip IC 3, the chip IC 4-A of short circuit the momentary power 33 and chip IC 4-B of C phase phase regulating circuit 37 is integrated in chip IC 4, and the chip IC-A of ground fault circuit 34 uses the part in integrated chip IC5.Carry Long-time-delay circuit 31, overload short time delay circuit 32, short circuit momentary power 33, ground fault circuit 34, A phase phase regulating circuit 35, B phase phase regulating circuit 36 and C phase phase regulating circuit 37 are all connected with the contact switch of the relay for control circuit break-make.
Wherein, the contact switch being connected to overload Long-time-delay circuit 31 is the contact switch J1K of the first relay J 1, the contact being connected to overload short time delay circuit 32 is the contact switch J2K of the second relay J 2, the contact being connected to short circuit momentary power 33 is the contact switch J3K of the 3rd relay J 3, the contact switch being connected to ground fault circuit 34 is the contact switch J4K of the 4th relay J 4 and the 8th relay J 8, J8K, contact switch J4K and J8K of the 4th relay and the 8th relay is arranged in series, the contact switch being connected to A phase phase regulating circuit 35 is the contact switch J5K of the 5th relay J 5 and the 9th relay J 9, J9K, contact switch J5K and J9K of the 5th relay and the 9th relay is arranged in parallel, the contact switch being connected to B phase phase regulating circuit 36 is the contact switch J6K of the 6th relay J 6 and the 9th relay J 9, J9K, contact switch J6K and J9K of the 6th relay and the 9th relay is arranged in parallel, the contact switch being connected to C phase phase regulating circuit 37 is the contact switch J7K of the 7th relay J 7 and the 9th relay J 9, J9K, contact switch J7K and J9K of the 7th relay and the 9th relay is arranged in parallel.
Deliver to the chip IC 2-A of voltage regulation unit by signal generating unit, the signal of IC3-A, IC4-A, IC5-A input end amplifies through ratio, obtain specifying the voltage VR of 4 kinds of verifications such as transshipping long delay, overload short time delay, short circuit are instantaneous, fault ground, Vsd, Vi, VN.
Controlled by one of the contact switch J1K-J4K of relay, the peripheral circuit through being made up of electric capacity C6, C9, C12, resistance R27-R34 and potentiometer VR2-VR4 enters into the chip IC 2-B of phase adjustment unit, carries out waveform phase shift in IC3-B, IC4-B.Electric capacity C7, C10, C13 participate in phase place adjustment, and potentiometer VR2-VR4 finely tunes.Obtain the waveform of 3 phase differential 120 ° thus, three-phase alternating voltage that is virtually reality like reality, send three-phase signal through electric capacity C8, C11, C14, the verification voltage VN (fault ground signal) exported by fault ground circuit does not then need through phase shift process.Through the verification voltage of phase shift process, finally controlled to deliver to tested ETU5 by the contact switch J5-J9 of relay.
Display measurement module 4 as shown in Figure 3, comprise voltage table M1 and stopwatch M2, voltage table M1 respectively with A phase phase regulating circuit, B phase phase regulating circuit, C phase phase regulating circuit and output terminal be connected, detect the actual voltage value of the tested ETU5 of input, stopwatch M1 is connected with the topworks DT of tested ETU.After tested ETU5 input validation voltage, according to different selections, send different protection act, drive topworks DT action.Before; when calibration voltage delivers to tested ETU; timing by relay CJ1K controls stopwatch M2; and contact point signal DJ is passed to stopwatch M2 by topworks DT action; notice stopwatch M2 stops timing; the time of its timing is compared with protection curve official hour, can judge that whether this tested ETU5 is qualified.If need again detect, then can be controlled contact switch CJ2K by the relay CJ2 in measure-controlling unit and make stopwatch M2 reset reset.
The particular circuit configurations of power module 2 as shown in Figure 1, comprise the transformer TB, bridge rectifier ZD1 and the integrated regulator that connect successively, integrated regulator includes 4 voltage stabilizing chip IC 6-IC9,6 electric capacity C16-C21 and 2 inductance L 1 and L2, wherein C16, C17 play filter action, and all the other electric capacity and inductance play Anti-Jamming.Voltage protection device YM is also provided with, for the protection of power supply not by the damage of ultra-voltage at the input end of transformer TB.Transformer TB connects the AC power of 220V, carry out after rectification through bridge rectifier, input integrated regulator, this voltage stabilizer is provided with two output terminals, be respectively ± 5V and the ± output terminal of 12V, the output terminal of the output terminal connection signal module 3, ± 12V of wherein ± 5V connects the signaling control unit of verification control module 1.
Function of the present invention is complete, and be applicable to batch detection ETU, be meet national standard, accurately and effectively three-phase signal tester, cost is low, easy to operate, and reliable operation has originality.
Claims (8)
1. an ETU calibration instrument, comprise power module, signaling module, verification control module and display measurement module, described power module connection signal mould block sum check control module, described verification control module connection signal module, for controlling the generation of checking signal, described signaling module is all connected with tested ETU with display measurement module, it is characterized in that, described signaling module is the signaling module that can export three-phase voltage signal simultaneously or export separately unidirectional voltage signal, this signaling module comprises four output terminals, be respectively A phase voltage signal, B phase voltage signal, the output terminal of C phase voltage signal and neutral voltage signal,
Described signaling module comprises signal generating unit, voltage regulation unit and phase adjustment unit, described signal generating unit connects voltage regulation unit, and described voltage regulation unit comprises overload Long-time-delay circuit in parallel, overload short time delay circuit, short circuit momentary power and ground fault circuit, described phase adjustment unit comprises three A phase phase regulating circuits for exporting three-phase voltage signal in parallel, B phase phase regulating circuit and C phase phase regulating circuit, described overload Long-time-delay circuit, overload short time delay circuit is connected with phase adjustment unit with the output terminal after the parallel connection of short circuit momentary power, the A phase phase regulating circuit of phase adjustment unit, the output terminal of B phase phase regulating circuit and C phase phase regulating circuit respectively with the A phase input end of tested ETU, B phase input end is connected with C phase input end, and the output terminal of described ground fault circuit connects the zero line input end of tested ETU, carries Long-time-delay circuit, overload short time delay circuit, short circuit momentary power, ground fault circuit, A phase phase regulating circuit, B phase phase regulating circuit and C phase phase regulating circuit are all connected with the contact switch of the relay for control circuit break-make.
2. a kind of ETU calibration instrument according to claim 1, it is characterized in that, described verification control module comprises measure-controlling unit and signaling control unit, described signaling control unit comprises the first switch, second switch and the first relay for contact switch in control signal module, second relay, 3rd relay, 4th relay, 5th relay, 6th relay, 7th relay, 8th relay and the 9th relay, the first described switch comprises at least 4 selector channel, 4 selector channel respectively with the first relay, second relay, 3rd relay is connected with the 4th relay, the second described switch comprises at least 5 selector channel, 5 selector channel respectively with the 5th relay, 6th relay, 7th relay, 8th relay is connected with the 9th relay.
3. a kind of ETU calibration instrument according to claim 2, it is characterized in that, the contact switch being connected to overload Long-time-delay circuit is the contact switch of the first relay, the contact being connected to overload short time delay circuit is the contact switch of the second relay, the contact being connected to short circuit momentary power is the contact switch of the 3rd relay, the contact switch being connected to ground fault circuit is the contact switch of the 4th relay and the 8th relay, the contact switch of the 4th relay and the 8th relay is arranged in series, the contact switch being connected to A phase phase regulating circuit is the contact switch of the 5th relay and the 9th relay, the contact switch of the 5th relay and the 9th relay is arranged in parallel, the contact switch being connected to B phase phase regulating circuit is the contact switch of the 6th relay and the 9th relay, the contact switch of the 6th relay and the 9th relay is arranged in parallel, the contact switch being connected to C phase phase regulating circuit is the contact switch of the 7th relay and the 9th relay, the contact switch of the 7th relay and the 9th relay is arranged in parallel.
4. a kind of ETU calibration instrument according to claim 2, it is characterized in that, the first described switch is all connected relay by resistance with triode with the selector channel of the second switch, one end of described resistance connects selector channel, the base stage of other end connecting triode, the grounded emitter of triode, collector connection relay.
5. a kind of ETU calibration instrument according to claim 2, it is characterized in that, described display measurement module comprises voltage table and stopwatch, described voltage table respectively with A phase phase regulating circuit, B phase phase regulating circuit, C phase phase regulating circuit and output terminal be connected, described stopwatch is connected with the topworks of tested ETU.
6. a kind of ETU calibration instrument according to claim 2, it is characterized in that, described power module comprises the transformer, bridge rectifier and the integrated regulator that connect successively, and described transformer connects AC power, carry out after rectification through bridge rectifier, input integrated regulator.
7. a kind of ETU calibration instrument according to claim 6, is characterized in that, described integrated regulator is provided with two output terminals, an output terminal connection signal control module, and another output terminal connects verification control module.
8. a kind of ETU calibration instrument according to claim 6, is characterized in that, the input end of described transformer is provided with voltage protection device.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210326236.5A CN103676920B (en) | 2012-09-05 | 2012-09-05 | A kind of ETU calibration instrument |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210326236.5A CN103676920B (en) | 2012-09-05 | 2012-09-05 | A kind of ETU calibration instrument |
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| CN103676920A CN103676920A (en) | 2014-03-26 |
| CN103676920B true CN103676920B (en) | 2016-03-23 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109725251A (en) * | 2019-01-31 | 2019-05-07 | 中国人民解放军海军工程大学 | AC-DC switch electronic trip unit tester |
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| WO2001067576A2 (en) * | 2000-03-09 | 2001-09-13 | General Electric Company | Connection tester for an electronic trip unit |
| CN201707433U (en) * | 2010-05-31 | 2011-01-12 | 江南机电设计研究所 | Intelligent controller characteristic test instrument |
| CN201853136U (en) * | 2010-11-19 | 2011-06-01 | 浙江科能达电气有限公司 | Tester for intelligent controller |
| CN102445656A (en) * | 2011-11-24 | 2012-05-09 | 天津市百利电气有限公司 | Detection device for electronic release of low-voltage apparatus, and control method |
| CN202815584U (en) * | 2012-09-05 | 2013-03-20 | 上海精翊电器有限公司 | ETU calibration instrument |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8552728B2 (en) * | 2009-11-30 | 2013-10-08 | Utility Relay Co., Ltd. | Sluggish circuit breaker detection system and method |
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- 2012-09-05 CN CN201210326236.5A patent/CN103676920B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001067576A2 (en) * | 2000-03-09 | 2001-09-13 | General Electric Company | Connection tester for an electronic trip unit |
| CN201707433U (en) * | 2010-05-31 | 2011-01-12 | 江南机电设计研究所 | Intelligent controller characteristic test instrument |
| CN201853136U (en) * | 2010-11-19 | 2011-06-01 | 浙江科能达电气有限公司 | Tester for intelligent controller |
| CN102445656A (en) * | 2011-11-24 | 2012-05-09 | 天津市百利电气有限公司 | Detection device for electronic release of low-voltage apparatus, and control method |
| CN202815584U (en) * | 2012-09-05 | 2013-03-20 | 上海精翊电器有限公司 | ETU calibration instrument |
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