CN108387781A - A kind of D.C. resistance test device - Google Patents
A kind of D.C. resistance test device Download PDFInfo
- Publication number
- CN108387781A CN108387781A CN201710755555.0A CN201710755555A CN108387781A CN 108387781 A CN108387781 A CN 108387781A CN 201710755555 A CN201710755555 A CN 201710755555A CN 108387781 A CN108387781 A CN 108387781A
- Authority
- CN
- China
- Prior art keywords
- switch
- resistance
- tune
- voltmeter
- ammeter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
- G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
- G01R27/08—Measuring resistance by measuring both voltage and current
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Resistance Or Impedance (AREA)
Abstract
The invention discloses a kind of D.C. resistance test devices, including power supply, switch S1, switch S2, ammeter PA, voltmeter PV and adjustable resistance R tune；The power supply, switch S1, ammeter PA, voltmeter PV and the series connection of adjustable resistance R tune；The switch S1 is used for the break-make of power supply；The ammeter PA is used for the total current of measuring circuit；The both ends of the voltmeter PV are parallel with high-power transformer；The switch S2 is in parallel with adjustable resistance R tune, for controlling adjustable resistance R tune access circuit or short circuit；The high-power transformer includes concatenated inductance L and resistance RX；The time of measuring that D.C. resistance test device of the present invention can greatly shorten the D.C. resistance RX of high-power transformer greatly shortens.
Description
Technical field
The present invention relates to it is a kind of measure high-power transformer the D.C. resistance time it is short, and can survey crew erroneous judgement it is straight
Leakage resistance test device.
Background technology
Currently, the time mistake in the prior art for measuring D.C. resistance device and measuring the D.C. resistance of high-power transformer
It is long, it is easy to cause instrument fever；Personnel's erroneous judgement simultaneously, which cannot measure, to be come.
We have developed it is a kind of measure high-power transformer the D.C. resistance time it is short, and can survey crew erroneous judgement direct current
Resistance testing device.
Invention content
A kind of direct current measuring high-power transformer is provided the invention aims to overcome the deficiencies in the prior art
The resistance time is short, and the D.C. resistance test device of energy survey crew's erroneous judgement.
In order to achieve the above objectives, the technical solution adopted by the present invention is：A kind of D.C. resistance test device, including power supply,
Switch S1, switch S2, ammeter PA, voltmeter PV and adjustable resistance R tune；The power supply, switch S1, ammeter PA, voltmeter
PV and the series connection of adjustable resistance R tune；The switch S1 is used for the break-make of power supply；The ammeter PA is used for total electricity of measuring circuit
Stream；The both ends of the voltmeter PV are parallel with high-power transformer；The switch S2 is in parallel with adjustable resistance R tune, for controlling
Adjustable resistance R tune accesses circuit or short circuit；The high-power transformer includes concatenated inductance L and resistance RX.
Preferably, the D.C. resistance test device also includes switch S3；The switch S3 is for controlling voltmeter PV's
Break-make.
Due to the application of the above technical scheme, the present invention has following advantages compared with prior art：
D.C. resistance test device of the present invention can greatly shorten the time of measuring of the D.C. resistance RX of high-power transformer
It greatly shortens.
Description of the drawings
Technical scheme of the present invention is further explained below in conjunction with the accompanying drawings：
Attached drawing 1 is the circuit diagram of D.C. resistance test device of the present invention.
Specific implementation mode
Below in conjunction with the accompanying drawings and specific embodiment, the present invention is described in further details.
Attached drawing 1 is D.C. resistance test device of the present invention, including power supply, switch S1, switch S2, switch S3, electricity
Flow table PA, voltmeter PV and adjustable resistance R tune；The power supply, switch S1, switch S3, ammeter PA, voltmeter PV and adjustable electric
Hinder the series connection of R tune；The switch S1 is used for the break-make of power supply；The switch S3 is used to control the break-make of voltmeter PV；The electric current
Table PA is used for the total current of measuring circuit；The both ends of the voltmeter PV are parallel with high-power transformer；The switch S2 with can
Adjust resistance R tune in parallel, for controlling adjustable resistance R tune access circuit or short circuit；The high-power transformer includes concatenated electricity
Feel L and resistance RX.
When measuring the D.C. resistance RX of high-power transformer, the S1 that first closes a switch is powered on, switch S2 is disconnected again after a few minutes
Switch S2 simultaneously adjusts adjustable resistance R tune, and the time of measuring of D.C. resistance RX can be made to greatly shorten.
Due to the application of the above technical scheme, the present invention has following advantages compared with prior art：
D.C. resistance test device of the present invention can greatly shorten the time of measuring of the D.C. resistance RX of high-power transformer
It greatly shortens.
The above embodiments merely illustrate the technical concept and features of the present invention, and its object is to allow person skilled in the art
Scholar can understand present disclosure and be implemented, and it is not intended to limit the scope of the present invention, all according to the present invention
Equivalent change or modification made by Spirit Essence should all cover within the scope of the present invention.
Claims (2)
1. a kind of D.C. resistance test device, including power supply, switch S1, ammeter PA and voltmeter PV；The power supply, switch
S1, ammeter PA and voltmeter PV series connection；The switch S1 is used for the break-make of power supply；The ammeter PA is for measuring circuit
Total current；The both ends of the voltmeter PV are parallel with high-power transformer；The high-power transformer include concatenated inductance L and
Resistance RX；It is characterized in that：Also include switch S2 and adjustable resistance R tune；The adjustable resistance R connects with switch S1；It is described to open
It is in parallel with adjustable resistance R tune to close S2, for controlling adjustable resistance R tune access circuit or short circuit.
2. D.C. resistance test device according to claim 1, it is characterised in that：Also include switch S3；The switch S3
Break-make for controlling voltmeter PV.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710755555.0A CN108387781A (en) | 2017-08-29 | 2017-08-29 | A kind of D.C. resistance test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710755555.0A CN108387781A (en) | 2017-08-29 | 2017-08-29 | A kind of D.C. resistance test device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108387781A true CN108387781A (en) | 2018-08-10 |
Family
ID=63076474
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710755555.0A Pending CN108387781A (en) | 2017-08-29 | 2017-08-29 | A kind of D.C. resistance test device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108387781A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112816783A (en) * | 2020-12-31 | 2021-05-18 | 广东电网有限责任公司 | Device and method for measuring direct current resistance of reactor |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB587417A (en) * | 1944-10-05 | 1947-04-24 | Reyrolle A & Co Ltd | Improvements in or relating to the testing of electric insulation |
| JPH06351237A (en) * | 1993-06-07 | 1994-12-22 | Tokyo Electric Co Ltd | Switching regulator power supply |
| CN1124846A (en) * | 1994-10-26 | 1996-06-19 | 华北电力学院 | Dynamic measuring method and apparatus for D.C. resistance of power transformer |
| CN2304130Y (en) * | 1997-07-15 | 1999-01-13 | 沈治 | D. C. resistance detecting instrument |
| CN104714099A (en) * | 2015-04-15 | 2015-06-17 | 王永顺 | Method for over-speed measurement of direct-current resistance of large power transformer |
| CN106300312A (en) * | 2016-09-14 | 2017-01-04 | 海南电网有限责任公司海口供电局 | A kind of transformator directly hinders measurement double loop discharge circuit |
-
2017
- 2017-08-29 CN CN201710755555.0A patent/CN108387781A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB587417A (en) * | 1944-10-05 | 1947-04-24 | Reyrolle A & Co Ltd | Improvements in or relating to the testing of electric insulation |
| JPH06351237A (en) * | 1993-06-07 | 1994-12-22 | Tokyo Electric Co Ltd | Switching regulator power supply |
| CN1124846A (en) * | 1994-10-26 | 1996-06-19 | 华北电力学院 | Dynamic measuring method and apparatus for D.C. resistance of power transformer |
| CN2304130Y (en) * | 1997-07-15 | 1999-01-13 | 沈治 | D. C. resistance detecting instrument |
| CN104714099A (en) * | 2015-04-15 | 2015-06-17 | 王永顺 | Method for over-speed measurement of direct-current resistance of large power transformer |
| CN106300312A (en) * | 2016-09-14 | 2017-01-04 | 海南电网有限责任公司海口供电局 | A kind of transformator directly hinders measurement double loop discharge circuit |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112816783A (en) * | 2020-12-31 | 2021-05-18 | 广东电网有限责任公司 | Device and method for measuring direct current resistance of reactor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180810 |
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| RJ01 | Rejection of invention patent application after publication |