CN204832408U - Portable current transformer secondary circuit tester of working a telephone switchboard - Google Patents
Portable current transformer secondary circuit tester of working a telephone switchboard Download PDFInfo
- Publication number
- CN204832408U CN204832408U CN201520627826.0U CN201520627826U CN204832408U CN 204832408 U CN204832408 U CN 204832408U CN 201520627826 U CN201520627826 U CN 201520627826U CN 204832408 U CN204832408 U CN 204832408U
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- power supply
- current transformer
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- 238000012545 processing Methods 0.000 claims abstract description 20
- 238000012360 testing method Methods 0.000 claims abstract description 11
- 238000002955 isolation Methods 0.000 claims abstract description 8
- 238000005259 measurement Methods 0.000 claims description 12
- 238000004891 communication Methods 0.000 claims description 4
- 238000007689 inspection Methods 0.000 abstract description 8
- 230000003071 parasitic effect Effects 0.000 description 3
- 238000012937 correction Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012795 verification Methods 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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- Testing Electric Properties And Detecting Electric Faults (AREA)
Abstract
The utility model discloses a portable current transformer secondary circuit tester of working a telephone switchboard, including DCAC contravariant module, the functional module, interface module, measured module and computer processing module, DCAC contravariant module is connected with the functional module, the functional module is connected with computer processing module and measured module, be provided with between functional module and the computer processing module and report to the police and the protected location, measuring device and interface module are connected, interface module and test loop are connected, computer processing module is connected with the display module, functional module and DCAC contravariant module are connected with the battery, be provided with the isolation module between DCAC contravariant module and the functional module, the functional module includes the power, the fuse, the switch, the utility model discloses simple structure, portable, verify the sureness to current transformer secondary circuit wiring carrying on checksum to the testing terminal exactness after resumeing under the condition of not demolising the wiring, ensureing to the efficient inspection of electric current secondary circuit wiring carrying on under the exactness prerequisite.
Description
technical field:
The utility model relates to a kind of tester, particularly relates to a kind of portable type current transformer second loop return wiring tester.
background technology:
In the project such as generating plant, transformer station, current transformer finds broad application, and its correct relation that puts into operation the action message of electric protection, electric measurement, measuring apparatus accurate; So in project debugging and maintenance, the inspection of secondary loop of mutual inductor wiring is all the most important thing.
Secondary loop of mutual inductor wiring correctness, is related to the safe and stable operation of the measurement of current transformer arrangement and connection thereof, metering, protection, the device such as automatic.The put into operation reason of fault 90% of secondary loop of mutual inductor causes because wiring is incorrect, so before current transformer puts into operation, needs to detect secondary loop of mutual inductor wiring.Portable type current transformer secondary circuit tester makes secondary loop of mutual inductor wiring check be promoted to instrument automatic decision by the inspection of human subjective and be recorded data objectively to check, decrease artificial subjective factor to the impact checked, can be applicable to secondary loop of mutual inductor inspection and debugging in each duty generator group, each electric pressure transformer station, distribution network, ensure installation and adjustment quality.
Domestic and international existing comprehensive tester of current transformer is mainly used in measuring current mutual inductor device characteristics (no-load voltage ratio, polarity, volt-ampere characteristic etc.), and the precondition of its test is that secondary loop of mutual inductor wiring is correctly firm; The instrument of domestic and international existing butted line Correctness checking is mainly: school line lamp, correcting line machine etc., its principle uses direct supply to utilize the electric conductivity butted line of cable to check, due to secondary winding in current transformer DC resistance less (0.2-20 ohm), short circuit is equivalent to for direct supply, need to remove body wiring when carrying out secondary loop of mutual inductor wiring verification, and school line lamp, correcting line machine are only that verification core is correct, can not butted line position, wiring fixing and parasitic loop etc. check.
So need a kind of equipment to secondary loop of mutual inductor wiring core and wiring position correctness, wiring fixing, check with or without parasitic loop, can must possess portable, can carry with as debugging acid simultaneously.
utility model content:
Technical problem to be solved in the utility model is: overcome the deficiencies in the prior art, there is provided a kind of structure simple, be easy to carry, when not removing wiring, secondary loop of mutual inductor wiring checked and checking is carried out to the testing terminal correctness after recovering and determine, guaranteeing the portable type current transformer second loop return wiring tester under correctness prerequisite, electric current secondary loop wiring being carried out to high-level efficiency inspection.
The technical solution of the utility model is: a kind of portable type current transformer second loop return wiring tester, comprise DC/AC inversion module, functional module, interface module, measurement module and MICROCOMPUTER PROCESSING module, described DC/AC inversion module is connected with functional module, described functional module is connected with MICROCOMPUTER PROCESSING module and measurement module, be provided with between described functional module and MICROCOMPUTER PROCESSING module and report to the police and protected location, described measurement mechanism is connected with interface module, described interface module is connected with test loop, described MICROCOMPUTER PROCESSING module is connected with display module, described functional module is connected with battery with DC/AC inversion module, isolation module is provided with between described DC/AC inversion module and functional module, described functional module comprises power supply, fuse, switch.
Described power supply comprises UAC power supply and UDC power supply, described UAC power supply and UDC power supply be provided with resistance R1 and R2 on the way, and be connected with switch S 1, described UAC power supply is connected with switch S 2 with another road of UDC power supply, described switch S 1 is connected with switch S 3, described switch S 2 is connected with switch S 4, described switch S 3 and switch S 4 include normally opened contact and normally closed contact, the normally opened contact of described switch S 3 and switch S 4 is interconnected and exports, described switch S 3 is connected with fuse FU1 and FU2 with the normally closed contact of switch S 4, described fuse FU1 with FU2 is connected with output interface.
Be provided with along separate routes between fuse FU1 and FU2 and output interface, be provided with fuse FU3 and voltage sensor U3 along separate routes, resistance R1 and R2 resistance value are 30 Ω, and two ends all arrange voltage sensor U1, U2 and gather magnitude of voltage.
Described isolation module is 12V/12V isolating transformer; described battery is 12V battery; described interface module comprises button, switch and communication interface; described warning and protected location comprise pilot lamp and loudspeaker; described DC/AC inversion module is square-wave inverter, and described MICROCOMPUTER PROCESSING module comprises single-chip microcomputer and storer.
The beneficial effects of the utility model are:
1, the utility model structure simple, be easy to carry, when not removing wiring, secondary loop of mutual inductor wiring checked and checking is carried out to the testing terminal correctness after recovering and determine, guaranteeing to carry out high efficiency inspection to electric current secondary loop wiring under correctness prerequisite.
2, the utility model, utilization apply alternating voltage, carry out secondary loop of mutual inductor wiring test for short-circuit, judge the correctness of wiring, shorting stub etc., check with or without parasitic loop.
3, the utility model is promoted to instrument by secondary loop of mutual inductor wiring check by the inspection of human subjective and judges and record data objectively to check, decrease human factor to inspection impact, ensure that secondary loop of mutual inductor wiring once puts into operation successfully, stopped a whole set of Start-up and Adjustment and electrical equipment put into operation in current return fault, ensure that the safety of generating plant and transformer station puts into operation.
4, the utility model is before instrument is started working, and self-verifying accesses between loop and voltage-to-ground, when voltage exceedes permissible value, and instrument alarm, and locking power supply exports, and avoids misconnection to enter energized circuit and causes instrument damage.
5, the utility model automatically carries out, checks open circuit of secondary loop of current transformer situation, short-circuit conditions, the correct situation of wiring, Grounding, and record related data.
6, the utility model manual examination (check) is used for substituting Traditional DC school line lamp, adopts alternating voltage check and correction, DC voltage check and correction, checks, accomplish the function of a tractor serves several purposes, add overcurrent blocking function, avoid damage equipment the wiring of other types.
accompanying drawing illustrates:
Fig. 1 is the connection block diagram of portable type current transformer second loop return wiring tester.
Fig. 2 is function module circuit figure.
embodiment:
Embodiment: see Fig. 1 and Fig. 2.
Portable type current transformer second loop return wiring tester, comprise DC/AC inversion module, functional module, interface module, measurement module and MICROCOMPUTER PROCESSING module, DC/AC inversion module is connected with functional module, functional module is connected with MICROCOMPUTER PROCESSING module and measurement module, be provided with between functional module and MICROCOMPUTER PROCESSING module and report to the police and protected location, measurement mechanism is connected with interface module, interface module is connected with test loop, MICROCOMPUTER PROCESSING module is connected with display module, functional module is connected with battery with DC/AC inversion module, isolation module is provided with between DC/AC inversion module and functional module, functional module comprises power supply, fuse, switch.
Power supply comprises UAC power supply and UDC power supply, UAC power supply and UDC power supply be provided with resistance R1 and R2 on the way, and be connected with switch S 1, UAC power supply is connected with switch S 2 with another road of UDC power supply, switch S 1 is connected with switch S 3, switch S 2 is connected with switch S 4, switch S 3 and switch S 4 include normally opened contact and normally closed contact, the normally opened contact of switch S 3 and switch S 4 is interconnected and exports, switch S 3 is connected with fuse FU1 and FU2 with the normally closed contact of switch S 4, and fuse FU1 with FU2 is connected with output interface.
Be provided with along separate routes between fuse FU1 and FU2 and output interface, be provided with fuse FU3 and voltage sensor U3 along separate routes, resistance R1 and R2 resistance value are 30 Ω, and two ends all arrange voltage sensor U1, U2 and gather magnitude of voltage.
Isolation module is 12V/12V isolating transformer; battery is 12V battery, and interface module comprises button, switch and communication interface, and warning and protected location comprise pilot lamp and loudspeaker; DC/AC inversion module is square-wave inverter, and MICROCOMPUTER PROCESSING module comprises single-chip microcomputer and storer.
During use; battery is by DC/AC inversion module; through transformer isolation; test AC power is provided; the switching of the voltage of Implement of Function Module AC and DC; and conversion that is manual, automatic operating; measurement module measuring voltage value, current value; and be converted to digital signal and be supplied to MICROCOMPUTER PROCESSING module; when situation appears in magnitude of voltage, current value, warning and protected location are reported to the police, and coordinate the startup of locking instrument if desired with interface module; and the output of communication information is carried out by interface module, display module shows test process and result simultaneously.
The above, it is only preferred embodiment of the present utility model, not any pro forma restriction is done to the utility model, every above embodiment is done according to technical spirit of the present utility model any simple modification, equivalent variations and modification, all still belong in the scope of technical solutions of the utility model.
Claims (4)
1. a portable type current transformer second loop return wiring tester, comprise DC/AC inversion module, functional module, interface module, measurement module and MICROCOMPUTER PROCESSING module, it is characterized in that: described DC/AC inversion module is connected with functional module, described functional module is connected with MICROCOMPUTER PROCESSING module and measurement module, be provided with between described functional module and MICROCOMPUTER PROCESSING module and report to the police and protected location, described measurement mechanism is connected with interface module, described interface module is connected with test loop, described MICROCOMPUTER PROCESSING module is connected with display module, described functional module is connected with battery with DC/AC inversion module, isolation module is provided with between described DC/AC inversion module and functional module, described functional module comprises power supply, fuse, switch.
2. portable type current transformer second loop return wiring tester according to claim 1, it is characterized in that: described power supply comprises UAC power supply and UDC power supply, described UAC power supply and UDC power supply be provided with resistance R1 and R2 on the way, and be connected with switch S 1, described UAC power supply is connected with switch S 2 with another road of UDC power supply, described switch S 1 is connected with switch S 3, described switch S 2 is connected with switch S 4, described switch S 3 and switch S 4 include normally opened contact and normally closed contact, the normally opened contact of described switch S 3 and switch S 4 is interconnected and exports, described switch S 3 is connected with fuse FU1 and FU2 with the normally closed contact of switch S 4, described fuse FU1 with FU2 is connected with output interface.
3. portable type current transformer second loop return wiring tester according to claim 2, it is characterized in that: be provided with along separate routes between fuse FU1 and FU2 and output interface, fuse FU3 and voltage sensor U3 is provided with along separate routes, R1 and R2 resistance value is 30 Ω, and two ends all arrange voltage sensor U1, U2 and gather magnitude of voltage.
4. portable type current transformer second loop return wiring tester according to claim 1; it is characterized in that: described isolation module is 12V/12V isolating transformer; described battery is 12V battery; described interface module comprises button, switch and communication interface; described warning and protected location comprise pilot lamp and loudspeaker; described DC/AC inversion module is square-wave inverter, and described MICROCOMPUTER PROCESSING module comprises single-chip microcomputer and storer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520627826.0U CN204832408U (en) | 2015-08-19 | 2015-08-19 | Portable current transformer secondary circuit tester of working a telephone switchboard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520627826.0U CN204832408U (en) | 2015-08-19 | 2015-08-19 | Portable current transformer secondary circuit tester of working a telephone switchboard |
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| Publication Number | Publication Date |
|---|---|
| CN204832408U true CN204832408U (en) | 2015-12-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520627826.0U Expired - Fee Related CN204832408U (en) | 2015-08-19 | 2015-08-19 | Portable current transformer secondary circuit tester of working a telephone switchboard |
Country Status (1)
| Country | Link |
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| CN (1) | CN204832408U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110208719A (en) * | 2019-05-30 | 2019-09-06 | 国网辽宁省电力有限公司电力科学研究院 | A kind of detection device and method of direct current system parasitic loop |
| CN110687482A (en) * | 2019-11-05 | 2020-01-14 | 国网山西省电力公司阳泉供电公司 | Visual secondary circuit comprehensive detector |
| CN113030834A (en) * | 2021-04-19 | 2021-06-25 | 北京送变电有限公司 | Transformer secondary circuit line calibration device and method |
-
2015
- 2015-08-19 CN CN201520627826.0U patent/CN204832408U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110208719A (en) * | 2019-05-30 | 2019-09-06 | 国网辽宁省电力有限公司电力科学研究院 | A kind of detection device and method of direct current system parasitic loop |
| CN110687482A (en) * | 2019-11-05 | 2020-01-14 | 国网山西省电力公司阳泉供电公司 | Visual secondary circuit comprehensive detector |
| CN113030834A (en) * | 2021-04-19 | 2021-06-25 | 北京送变电有限公司 | Transformer secondary circuit line calibration device and method |
| CN113030834B (en) * | 2021-04-19 | 2023-01-10 | 北京送变电有限公司 | Device and method for calibrating secondary circuit of transformer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 450001 the 1-11 floor of No. 2, No. 2, No. 30, Changchun Road, hi tech Industrial Development Zone, Zhengzhou, Henan Patentee after: Henan No.1 Thermal Power Construction Co., Ltd. Address before: 450001 Henan Province, Zhengzhou city high tech Development Zone Long Chun road and Holly Street intersection Patentee before: Henan No.1 Thermal Power Construction Co. |
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| CP03 | Change of name, title or address | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151202 Termination date: 20190819 |
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| CF01 | Termination of patent right due to non-payment of annual fee |