CN106291156B - A kind of demand limiter decompression working time test circuit - Google Patents
A kind of demand limiter decompression working time test circuit Download PDFInfo
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- CN106291156B CN106291156B CN201510308807.6A CN201510308807A CN106291156B CN 106291156 B CN106291156 B CN 106291156B CN 201510308807 A CN201510308807 A CN 201510308807A CN 106291156 B CN106291156 B CN 106291156B
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- 230000006837 decompression Effects 0.000 title claims abstract description 10
- 238000005259 measurement Methods 0.000 claims abstract description 22
- 230000005611 electricity Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
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Abstract
The present invention relates to electrical measurement field, a kind of demand limiter decompression working time test circuit, comprising: the right end of master switch SA1 connects the power supply anode of digital timer PT, digital voltmeter PV, digital electronic ammeter PA respectively；Digital timer PT, digital voltmeter PV, digital electronic ammeter PA power supply negative terminal connect power supply negative terminal respectively；The time of digital timer PT measures the left end of positive relay termination K1 normally-closed contact, and the right end of relay K1 normally-closed contact connects positive output end；The time measurement negative terminal of digital timer PT connects negative output terminal, and when the coil of relay K1 is connected on power supply negative terminal and surveys between collection terminal, triggering end is connected when the survey of collection terminal and measured device when the survey.The energy safety and precise measurement decompression working time of the present invention.
Description
Technical field
The present invention relates to electrical measurement fields more particularly to a kind of demand limiter decompression working time to test circuit.
Background technique
GLB-2A demand limiter is to prevent surge voltage from carrying out to aircraft power grid when starting liquid cooling pump on certain aircraft
A kind of device of impact.The decompression working time is 1.2s ± 0.2s, and the measurement that technical parameter is depressured the working time limits electric current
Device processed has very important effect.At present decompression working time measuring circuit there is several methods that: 1, be in circuit by two pieces of moulds
Quasi- number table carries out the measurement of time difference and carries out, and the type circuit is there are measuring accuracy is poor, poor sensitivity.2, circuit is surveyed
Demand limiter main circuit needs independent external voltage source to be tested in examination, be easy to cause product working power and main control electricity
Source Type is different and causes safety accident.
Summary of the invention
The object of the present invention is to provide a kind of demand limiter decompression working times to test circuit, can safety and precise measurement
It is depressured the working time.
The technical scheme is that a kind of demand limiter decompression working time tests circuit, comprising:
Power supply, power positive end connect the left end of master switch SA1 by fuse, switch SA2 when the right end of master switch SA1 connects survey
Left end, the right end of switch SA2 passes through the control anode that positive output terminates measured device when survey；Power supply negative terminal passes through negative output terminal
Connect the control negative terminal of measured device；
The right end of master switch SA1 connect respectively digital timer PT, digital voltmeter PV, digital electronic ammeter PA power supply just
End；Digital timer PT, digital voltmeter PV, digital electronic ammeter PA power supply negative terminal connect power supply negative terminal respectively；Digital timer
The time of PT measures the left end of positive relay termination K1 normally-closed contact, and the right end of relay K1 normally-closed contact connects positive output end；Number
The time measurement negative terminal of word timer PT connects negative output terminal, when the coil of relay K1 is connected on power supply negative terminal and surveys collection terminal it
Between, triggering end connects when the survey of collection terminal and measured device when the survey；
The voltage measurement anode of digital voltmeter PV is defeated by the main circuit that main circuit out-put supply is just terminating measured device
Enter power positive end；The voltage measurement negative terminal of digital voltmeter PV connects the main circuit of measured device by main circuit out-put supply negative terminal
Input power negative terminal；
The current measurement of digital electronic ammeter PA is just terminating main circuit out-put supply negative terminal；The current measurement of digital electronic ammeter PA
Negative terminal connects main circuit out-put supply anode by resistance R.
The invention has the advantages that
Compared with the first scheme: can quickly read data, intuitive is strong, and measuring accuracy relatively simulation instrument is high, uses
Frequency is high, and the program is suitable for using in laboratory after being cured to exerciser.
Compared with the second scheme: safe and reliable, wiring is docked using attachment device.
Detailed description of the invention
Fig. 1 is measured device internal circuit schematic diagram.
Fig. 2 is that demand limiter of the present invention is depressured working time test circuit diagram.
Specific embodiment
Measured device circuit structure is as shown in Figure 1, circuit structure of the present invention is as shown in Figure 2, comprising:
Power supply uses DC28V, and power positive end connects the left end of master switch SA1 by fuse FU, and the right end of master switch SA1 connects
The left end of switch SA2 when survey, the right end of switch SA2 is connecing the control of measured device just by positive output end (Fig. 2 middle port 2) when survey
It holds (Fig. 1 middle port 2)；Power supply negative terminal (Fig. 2 middle port 1) terminates control negative terminal (Fig. 1 middle port of measured device by negative output
1)；
The right end of master switch SA1 connects the power supply anode of digital timer PT, digital voltmeter PV, digital electronic ammeter PA respectively
1；Digital timer PT, digital voltmeter PV, digital electronic ammeter PA power supply negative terminal 2 connect power supply negative terminal respectively；Digital timer
The left end of the time measurement 3 contact relay K1 normally-closed contact of anode of PT, the right end of relay K1 normally-closed contact connect positive output end；Number
The time measurement negative terminal 4 of word timer PT connects negative output terminal, the collection terminal when coil of relay K1 is connected on power supply negative terminal and surveys
Between (Fig. 2 middle port 4), triggering end (Fig. 1 middle port 4) is connected when the survey of collection terminal and measured device when the survey；
The voltage measurement anode 3 of digital voltmeter PV connects tested device by main circuit out-put supply anode (Fig. 2 middle port B)
The main circuit input power anode (Fig. 1 middle port B) of part；The voltage measurement negative terminal 4 of digital voltmeter PV is exported by main circuit
Power supply negative terminal (Fig. 2 middle port C) connects the main circuit input power negative terminal (Fig. 1 middle port C) of measured device；
The current measurement anode 3 of digital electronic ammeter PA connects main circuit out-put supply negative terminal；The electric current of digital electronic ammeter PA is surveyed
It measures negative terminal 4 and main circuit out-put supply anode is connect by resistance R.
Process when circuit is surveyed:
In Fig. 2,28V power module is connected by connecting SA1, gives digital timer PT, digital electronic ammeter PA, number respectively
Voltmeter PV provides working power.When connecting SA2 switch, the control anode (Fig. 1 middle port 2) of measured device is having 28V just in Fig. 1
Electricity input provides power supply to measured device power regulator module.Measured device internal delay time circuit works at this time, measured device
Relay K1 work, K1 normally opened contact closure, dut contactor K2 work, main contactor contact K2 closure.It connects at this time
Triggering end (Fig. 1 middle port 4) has positive electricity output when the survey of the contact contactor K2, collection terminal (Fig. 2 middle port 4) when passing through survey,
Relay K1 coil working, K1 normally-closed contact disconnect, and digital timer PT stops timing, and digital timer PT collection value is tested
Device is depressured the working time.
Claims (1)
1. a kind of demand limiter decompression working time tests circuit characterized by comprising
Power supply, power positive end connect the left end master switch (SA1) by fuse, and the right end of master switch (SA1) switchs (SA2) when connecing survey
Left end, the control anode that the right end of switch (SA2) passes through positive output termination measured device when survey；Power supply negative terminal passes through negative output
Terminate the control negative terminal of measured device；
The right end of master switch (SA1) connects the power supply of digital timer (PT), digital voltmeter (PV), digital electronic ammeter (PA) respectively
Anode；Digital timer (PT), digital voltmeter (PV), digital electronic ammeter (PA) power supply negative terminal connect power supply negative terminal respectively；Number
The time of word timer (PT) measures the left end of positive relay termination (K1) normally-closed contact, the right end of relay (K1) normally-closed contact
Connect positive output end；The time measurement negative terminal of digital timer (PT) connects negative output terminal, and the coil of relay (K1) is connected on power supply
Negative terminal and when surveying between collection terminal, triggering end connects when the survey of collection terminal and measured device when the survey；
The voltage measurement anode of digital voltmeter (PV) is just terminating the main circuit input of measured device by main circuit out-put supply
Power positive end；The voltage measurement negative terminal of digital voltmeter (PV) connects the main circuit of measured device by main circuit out-put supply negative terminal
Input power negative terminal；
The current measurement of digital electronic ammeter (PA) is just terminating main circuit out-put supply negative terminal；The current measurement of digital electronic ammeter (PA)
Negative terminal connects main circuit out-put supply anode by resistance (R).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510308807.6A CN106291156B (en) | 2015-06-05 | 2015-06-05 | A kind of demand limiter decompression working time test circuit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510308807.6A CN106291156B (en) | 2015-06-05 | 2015-06-05 | A kind of demand limiter decompression working time test circuit |
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| Publication Number | Publication Date |
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| CN106291156A CN106291156A (en) | 2017-01-04 |
| CN106291156B true CN106291156B (en) | 2019-05-10 |
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| CN201510308807.6A Active CN106291156B (en) | 2015-06-05 | 2015-06-05 | A kind of demand limiter decompression working time test circuit |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3976933A (en) * | 1974-02-20 | 1976-08-24 | Societa Italiana Elettronica S.P.A. | Method and circuit for in-service testing of an electro-magnetically actuated component |
| WO1995012236A1 (en) * | 1993-10-28 | 1995-05-04 | Elin Energieversorgung Gesellschaft Mbh | Device for measuring the time element of a power switch |
| CN101441235A (en) * | 2007-08-14 | 2009-05-27 | 福鲁克公司 | Systems and methods for an open circuit current limiter |
| CN102193036A (en) * | 2010-03-12 | 2011-09-21 | 华东电力试验研究院有限公司 | Device and method for measuring response time of fault current limiter |
| CN203838269U (en) * | 2014-05-19 | 2014-09-17 | 贵州天义电器有限责任公司 | Multifunctional delay detection and debugging equipment |
| CN203929914U (en) * | 2014-04-15 | 2014-11-05 | 许昌县电业公司 | Test the protective relaying device servicing unit of actuation time |
-
2015
- 2015-06-05 CN CN201510308807.6A patent/CN106291156B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3976933A (en) * | 1974-02-20 | 1976-08-24 | Societa Italiana Elettronica S.P.A. | Method and circuit for in-service testing of an electro-magnetically actuated component |
| WO1995012236A1 (en) * | 1993-10-28 | 1995-05-04 | Elin Energieversorgung Gesellschaft Mbh | Device for measuring the time element of a power switch |
| CN101441235A (en) * | 2007-08-14 | 2009-05-27 | 福鲁克公司 | Systems and methods for an open circuit current limiter |
| CN102193036A (en) * | 2010-03-12 | 2011-09-21 | 华东电力试验研究院有限公司 | Device and method for measuring response time of fault current limiter |
| CN203929914U (en) * | 2014-04-15 | 2014-11-05 | 许昌县电业公司 | Test the protective relaying device servicing unit of actuation time |
| CN203838269U (en) * | 2014-05-19 | 2014-09-17 | 贵州天义电器有限责任公司 | Multifunctional delay detection and debugging equipment |
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|---|---|
| CN106291156A (en) | 2017-01-04 |
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Address after: 723213 Liulin Town, Chenggu County, Hanzhong City, Shaanxi Province Patentee after: Shaanxi Aircraft Industry Co.,Ltd. Address before: Box 34, Hanzhong City, Shaanxi Province, 723213 Patentee before: Shaanxi Aircraft INDUSTRY(GROUP) Co.,Ltd. |
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