CN204142777U - Voltage transformer (VT) calibrating termination - Google Patents
Voltage transformer (VT) calibrating termination Download PDFInfo
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- CN204142777U CN204142777U CN201420673589.7U CN201420673589U CN204142777U CN 204142777 U CN204142777 U CN 204142777U CN 201420673589 U CN201420673589 U CN 201420673589U CN 204142777 U CN204142777 U CN 204142777U
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- 238000010618 wire wrap Methods 0.000 claims description 5
- 238000012544 monitoring process Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 9
- 238000012360 testing method Methods 0.000 abstract description 8
- 238000005070 sampling Methods 0.000 abstract 1
- 238000004804 winding Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 3
- 238000012795 verification Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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Abstract
The utility model discloses a kind of voltage transformer (VT) calibrating termination, it is characterized in that: comprise low-voltage distribution box, single-chip switching, monitor voltage table, connection terminal and wire, single-chip switching is loaded in low-voltage distribution box, three input wires terminals of described termination connect tested transformer test terminal, output wiring terminal connects mutual-inductor tester sampling terminal, wherein two output wiring terminal accesses monitor voltage table, damage from surge voltage for protecting mutual-inductor tester during switching circuit, by the break-make of operation single-chip switching during use, switch between three different measuring loops.Apply this device only by a boost process, can complete and many mutual inductors are examined and determine, greatly improve calibration operation efficiency, decrease personnel depaly, reduce the number of times of mounting or dismounting Hi-pot test line, reduce Hi-pot test electrification time, reduce the security risk in process of the test, improve enterprise security benefit.
Description
Technical field
The utility model relates to voltage transformer (VT) Calibration Technology field.
Background technology
The effect of voltage transformer (VT) be high voltage in proportion relation transformation become 100V or more low-grade standard secondary voltage; for protection, metering, metering device; meanwhile, use voltage transformer (VT) high voltage and electrician can be isolated, ensured personal security.Due to above-mentioned functions, voltage transformer (VT) is widely used in generating, the power transmission and distribution field of electric power.When for metering, metering device, in order to measure or instrument numerical value accurate, then must need regularly to do measurement verification to voltage transformer (VT), otherwise its accuracy cannot be ensured, cause false protection, measure mistake etc.In verification process, need to connect AC power, pressure regulator, stepup transformer and standard potential transformer successively, standard potential transformer is connected with tested voltage transformer (VT) again, standard potential transformer is in buck process each time, a tested voltage transformer (VT) can only be examined and determine, and on-the-spot general mutual inductor of often organizing is two to three, need repeatedly to install and remove Hi-pot test line, repeatedly rise high-pressure process, multiple calibration operation personnel are needed to coordinate, the band operation with high pressure time is long, and security risk is high, and calibration operation efficiency is low.
Utility model content
The technical problems to be solved in the utility model is to provide a kind of voltage transformer (VT) calibrating termination, only by a boost process, can complete and examine and determine two or three mutual inductors, greatly improves calibration operation efficiency, reduces security risk.
For solving the problems of the technologies described above, technical solution adopted in the utility model is: a kind of voltage transformer (VT) calibrating termination, it is characterized in that: comprise low-voltage distribution box, single-chip switching, monitor voltage table, connection terminal and wire, single-chip switching is loaded in low-voltage distribution box, first input wires terminal and the second single-chip switching of connecting between the first output wiring terminal, second input wires terminal and the 4th single-chip switching of connecting between the first output wiring terminal, first input wires terminal and the first single-chip switching of connecting between the second output wiring terminal, second input wires terminal and the 3rd single-chip switching of connecting between the second output wiring terminal, serial monitoring voltage table between second output wiring terminal and the 3rd output wiring terminal, described first input wires terminal and the second input wires terminal are used for the secondary wire wrap terminal of connection two accredited voltage transformer (VT) respectively, described first output wiring terminal and the 3rd outlet terminal sub-connection mutual-inductor tester.
When voltage transformer (VT) is examined and determine, AC power, pressure regulator, stepup transformer are connected successively with standard potential transformer, the primary winding of the primary winding of standard potential transformer and two voltage transformer (VT) to be measured is in parallel, standard potential transformer secondary coil x
0end and mutual-inductor tester x hold be connected, standard potential transformer secondary coil a
0the secondary coil a of end, two voltage transformer (VT) to be measured
1end and a
2end is held with a of mutual-inductor tester respectively and is connected, the secondary coil x of voltage transformer (VT) one to be measured
1end connects the first input wires terminal of described termination, the secondary coil x of voltage transformer (VT) two to be measured
2end connects the second input wires terminal of described termination, first output wiring terminal is held with the D of mutual-inductor tester and is connected, 3rd output wiring terminal is held with the K of mutual-inductor tester and is connected, series impedance between the D end of mutual-inductor tester and a end, the single-chip switching of termination is often set to disconnection.Examine and determine voltage transformer (VT) to be measured first to close for the moment the first single-chip switching, voltage table instruction think when being not more than 5% polarity and wiring correct, disconnect the first single-chip switching, close the second single-chip switching, now mutual-inductor tester measuring circuit connects the error can measuring voltage transformer (VT) one to be measured from mutual-inductor tester, disconnects the second single-chip switching after measuring; First close when examining and determine voltage transformer (VT) two to be measured 3rd single-chip switching, voltage table instruction think when being not more than 5% polarity and wiring correct, disconnect the 3rd single-chip switching, close the 4th single-chip switching, now mutual-inductor tester measuring circuit connects the error can measuring voltage transformer (VT) two to be measured from mutual-inductor tester, disconnects the 4th single-chip switching after measuring.
One as the technical program is improved, a kind of voltage transformer (VT) calibrating termination, it is characterized in that: also comprise the 3rd input wires terminal and the 6th single-chip switching of connecting between the first output wiring terminal, 3rd input wires terminal and the 5th single-chip switching of connecting between the second output wiring terminal, the secondary wire wrap terminal of described 3rd input terminal sub-connection the 3rd accredited voltage transformer (VT).
When voltage transformer (VT) is examined and determine, AC power, pressure regulator, stepup transformer are connected successively with standard potential transformer, the primary winding of the primary winding of standard potential transformer and voltage transformer (VT) to be measured is in parallel, standard potential transformer secondary coil x
0end and mutual-inductor tester x hold be connected, standard potential transformer secondary coil a
0the secondary coil a of end, three voltage transformer (VT) to be measured
1end, a
2end and a
3end is held with a of mutual-inductor tester respectively and is connected, the secondary coil x of voltage transformer (VT) one to be measured
1end connects the first input wires terminal of described termination, the secondary coil x of voltage transformer (VT) two to be measured
2end connects the second input wires terminal of described termination, the secondary coil x of voltage transformer (VT) three to be measured
3end connects the 3rd input wires terminal of described termination, first output wiring terminal is held with the D of mutual-inductor tester and is connected, 3rd output wiring terminal is held with the K of mutual-inductor tester and is connected, series impedance between the D end of mutual-inductor tester and a end, the single-chip switching of termination is often set to disconnection.Examine and determine voltage transformer (VT) to be measured first to close for the moment the first single-chip switching, voltage table instruction think when being not more than 5% polarity and wiring correct, disconnect the first single-chip switching, close the second single-chip switching, now mutual-inductor tester measuring circuit connects the error can measuring voltage transformer (VT) one to be measured from mutual-inductor tester, disconnects the second single-chip switching after measuring; First close when examining and determine voltage transformer (VT) two to be measured 3rd single-chip switching, voltage table instruction think when being not more than 5% polarity and wiring correct, disconnect the 3rd single-chip switching, close the 4th single-chip switching, now mutual-inductor tester measuring circuit connects the error can measuring voltage transformer (VT) two to be measured from mutual-inductor tester, disconnects the 4th single-chip switching after measuring; First close when examining and determine voltage transformer (VT) three to be measured 5th single-chip switching, voltage table instruction think when being not more than 5% polarity and wiring correct, disconnect the 5th single-chip switching, close the 6th single-chip switching, now mutual-inductor tester measuring circuit connects the error can measuring voltage transformer (VT) three to be measured from mutual-inductor tester, disconnects the 6th single-chip switching after measuring.
The beneficial effect adopting technique scheme to produce is: apply this device only by a boost process, can complete and many mutual inductors are examined and determine, greatly improve calibration operation efficiency, decrease personnel depaly, reduce the number of times of mounting or dismounting Hi-pot test line, reduce Hi-pot test electrification time, reduce the security risk in process of the test, improve enterprise security benefit.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is circuit diagram of the present utility model.
1, the first single-chip switching; 2, the second single-chip switching; 3, the 3rd single-chip switching; 4, the 4th single-chip switching; 5, the 5th single-chip switching; 6, the 6th single-chip switching; 7, the first input wires terminal; 8, the second input wires terminal; 9, the 3rd input wires terminal; 10, the first output wiring terminal; 11, the second output wiring terminal; 12, the 3rd output wiring terminal; 13, voltage table is monitored; 14, voltage transformer (VT) to be measured; 15, standard potential transformer; 16, stepup transformer; 17, pressure regulator; 18, AC power; 19, mutual-inductor tester; 20, termination;
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Embodiment
Embodiment one
Voltage transformer (VT) calibrating termination, comprise low-voltage distribution box, four single-chip switchings, a supervision voltage table 13, connection terminal and wire, single-chip switching is loaded in low-voltage distribution box, to connect between first input wires terminal 7 with the first output wiring terminal 10 second single-chip switching 2, to connect between second input wires terminal 8 with the first output wiring terminal 10 the 4th single-chip switching 4, to connect between first input wires terminal 7 with the second output wiring terminal 11 first single-chip switching 1, to connect between second input wires terminal 8 with the second output wiring terminal 11 the 3rd single-chip switching 3, serial monitoring voltage table 13 between second output wiring terminal 11 and the 3rd output wiring terminal 12.
When to two voltage transformer (VT) calibratings, AC power 18, pressure regulator 17, stepup transformer 16 are connected successively with standard potential transformer 15, the primary winding of the primary winding of standard potential transformer 15 and two voltage transformer (VT) to be measured is in parallel, standard potential transformer 15 secondary coil x
0end and mutual-inductor tester 19 x hold be connected, standard potential transformer 15 secondary coil a
0the secondary coil a of end, two voltage transformer (VT) to be measured
1end and a
2end is held with a of mutual-inductor tester 19 respectively and is connected, the secondary coil x of voltage transformer (VT) one to be measured
1end connects the first input wires terminal 7 of described termination, the secondary coil x of voltage transformer (VT) two to be measured
2end connects the second input wires terminal 8 of described termination, first output wiring terminal 10 is held with the D of mutual-inductor tester 19 and is connected, 3rd output wiring terminal 12 is held with the K of mutual-inductor tester 19 and is connected, series impedance between the D end of mutual-inductor tester 19 and a end, the single-chip switching of termination is often set to disconnection.Examine and determine voltage transformer (VT) to be measured first to close for the moment the first single-chip switching 1, voltage table instruction think when being not more than 5% polarity and wiring correct, disconnect the first single-chip switching 1, close the second single-chip switching 2, now mutual-inductor tester 19 measuring circuit connects the error can measuring voltage transformer (VT) one to be measured from mutual-inductor tester 19, disconnects the second single-chip switching 2 after measuring; First close when examining and determine voltage transformer (VT) two to be measured 3rd single-chip switching 3, voltage table instruction think when being not more than 5% polarity and wiring correct, disconnect the 3rd single-chip switching 3, close the 4th single-chip switching 4, now mutual-inductor tester 19 measuring circuit connects the error can measuring voltage transformer (VT) two to be measured from mutual-inductor tester 19, disconnects the 4th single-chip switching 4 after measuring.
Embodiment two
One as embodiment one is improved, a kind of voltage transformer (VT) calibrating termination, it is characterized in that: also comprise the 6th single-chip switching 6 of connecting between the 3rd input wires terminal 9 with the first output wiring terminal 10, to connect between 3rd input wires terminal 9 with the second output wiring terminal 11 the 5th single-chip switching 5, described 3rd input wires terminal 9 connects the secondary wire wrap terminal waiting to examine and determine voltage transformer (VT) three, waits the secondary coil a examining and determine voltage transformer (VT) three
3end is held with a of mutual-inductor tester 19 and is connected, the secondary coil x of voltage transformer (VT) three to be measured
3end connects the 3rd input wires terminal 9 of described termination.All the other connected modes are identical with embodiment one.
First close when examining and determine voltage transformer (VT) three to be measured 5th single-chip switching 5, voltage table instruction think when being not more than 5% polarity and wiring correct, disconnect the 5th single-chip switching 5, close the 6th single-chip switching 6, now mutual-inductor tester 19 measuring circuit connects the error can measuring voltage transformer (VT) three to be measured from mutual-inductor tester 19, disconnects the 6th single-chip switching 6 after measuring.
Claims (2)
1. a voltage transformer (VT) calibrating termination, it is characterized in that: comprise low-voltage distribution box, single-chip switching, monitor voltage table (13), connection terminal and wire, single-chip switching is loaded in low-voltage distribution box, first input wires terminal (7) and the second single-chip switching (2) of connecting between the first output wiring terminal (10), second input wires terminal (8) and the 4th single-chip switching (4) of connecting between the first output wiring terminal (10), first input wires terminal (7) and the first single-chip switching (1) of connecting between the second output wiring terminal (11), second input wires terminal (8) and the 3rd single-chip switching (3) of connecting between the second output wiring terminal (11), serial monitoring voltage table between second output wiring terminal (11) and the 3rd output wiring terminal (12), described first input wires terminal (7) and the second input wires terminal (8) are used for the secondary wire wrap terminal of connection two accredited voltage transformer (VT) respectively, described first output wiring terminal (10) is connected mutual-inductor tester with the 3rd output wiring terminal (12).
2. a kind of voltage transformer (VT) calibrating termination according to claim 1, it is characterized in that: also comprise the 3rd input wires terminal (9) and the 6th single-chip switching (6) of connecting between the first output wiring terminal (10), 3rd input wires terminal (9) and the 5th single-chip switching (5) of connecting between the second output wiring terminal (11), described 3rd input wires terminal (9) connects the secondary wire wrap terminal waiting to examine and determine voltage transformer (VT) three.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420673589.7U CN204142777U (en) | 2014-11-06 | 2014-11-06 | Voltage transformer (VT) calibrating termination |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420673589.7U CN204142777U (en) | 2014-11-06 | 2014-11-06 | Voltage transformer (VT) calibrating termination |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204142777U true CN204142777U (en) | 2015-02-04 |
Family
ID=52419457
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420673589.7U Withdrawn - After Issue CN204142777U (en) | 2014-11-06 | 2014-11-06 | Voltage transformer (VT) calibrating termination |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204142777U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104297532A (en) * | 2014-11-06 | 2015-01-21 | 国家电网公司 | Wiring device for detecting voltage transformer |
| CN110927649A (en) * | 2019-12-02 | 2020-03-27 | 云南电网有限责任公司玉溪供电局 | Voltage transformer modularization calibrating installation |
| CN111929526A (en) * | 2020-07-29 | 2020-11-13 | 国网冀北电力有限公司计量中心 | Electronic voltage transformer checking system and method |
-
2014
- 2014-11-06 CN CN201420673589.7U patent/CN204142777U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104297532A (en) * | 2014-11-06 | 2015-01-21 | 国家电网公司 | Wiring device for detecting voltage transformer |
| CN104297532B (en) * | 2014-11-06 | 2017-03-08 | 国家电网公司 | Voltage transformer calibrating termination |
| CN110927649A (en) * | 2019-12-02 | 2020-03-27 | 云南电网有限责任公司玉溪供电局 | Voltage transformer modularization calibrating installation |
| CN111929526A (en) * | 2020-07-29 | 2020-11-13 | 国网冀北电力有限公司计量中心 | Electronic voltage transformer checking system and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150204 Effective date of abandoning: 20171114 |
|
| AV01 | Patent right actively abandoned |