CN110389280A - A kind of current transformer polarity measurement device - Google Patents
A kind of current transformer polarity measurement device Download PDFInfo
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- CN110389280A CN110389280A CN201910784594.2A CN201910784594A CN110389280A CN 110389280 A CN110389280 A CN 110389280A CN 201910784594 A CN201910784594 A CN 201910784594A CN 110389280 A CN110389280 A CN 110389280A
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- 238000005259 measurement Methods 0.000 title claims abstract description 42
- 238000012360 testing method Methods 0.000 claims abstract description 41
- 238000009413 insulation Methods 0.000 claims description 11
- 230000014759 maintenance of location Effects 0.000 claims description 4
- 238000003860 storage Methods 0.000 claims description 4
- 238000000465 moulding Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 13
- 239000000463 material Substances 0.000 abstract description 10
- 230000009194 climbing Effects 0.000 abstract description 7
- 230000008901 benefit Effects 0.000 abstract description 5
- 238000010586 diagram Methods 0.000 description 5
- 230000005611 electricity Effects 0.000 description 5
- 230000006378 damage Effects 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 230000010354 integration Effects 0.000 description 3
- 208000027418 Wounds and injury Diseases 0.000 description 2
- 208000014674 injury Diseases 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
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- 238000012986 modification Methods 0.000 description 1
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/72—Testing of electric windings
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- General Physics & Mathematics (AREA)
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
Abstract
The present invention relates to the polarity measurement fields of current transformer, more particularly to a kind of current transformer polarity measurement device, including device noumenon and external a p-wire hook and second test line, device noumenon includes power module, polarity instruction module, a pressurized control module；Power module is electrically connected with a pressurized control module, and a pressurized control module is connected by the primary side of a p-wire hook and current transformer, the voltage output of a pressurized control module control power module, and is once pressurizeed to current transformer；Polarity instruction module is connected by the secondary side of second test line and current transformer, and polarity instruction module is for current measurement and indicates polarity.The present apparatus improves a pressuring method, is once pressurizeed without climbing, and only needs a people that the operation of current transformer polarity measurement can be completed, convenient and efficient, while reducing security risk, uses manpower and material resources sparingly, has considerable economic benefit.
Description
Technical field
The present invention relates to the polarity measurement fields of current transformer, fill more particularly to a kind of current transformer polarity measurement
It sets.
Background technique
Current transformer includes primary side end of incoming cables P1, primary side leading-out terminal P2, secondary side head end S1 and secondary side tail end
S2, four ports should be connect respectively with respective lines, however S1 are likely to occur in wiring and the line polarity of S2 is reversed
Situation keeps measurement sense of current reversed, causes protection misoperation, instrument damage etc., it is therefore desirable to polarity test is carried out, to protect
Protect the polar correctness of current transformer.
Estimated current mutual inductor (CT) polarity test use method there are mainly three types of, be respectively direct current method, alternating current method and
Instrumental method is widely adopted wherein " direct current method " tests CT polarity advantage simple with its, safe and accurate.However this method exists
There are problems in practical application, and device therefor needs are temporarily raised by tester first in test, including battery, reality
The materials such as line, pointer microampere meter, lap bars are tested, the preparation of material is time-consuming and laborious；Its secondary device is built in the presence of randomness, no
Stability and inconvenient property, such as usual experiment line are fixed with insulating tape and battery, and the drawing of pulling in test is easily destroyed
The stability of connection, meanwhile, the connection of experiment line and two sides is not easy to operate and test process in personnel demand it is more, and exist
Matching problem.Especially in measurement, outdoor, voltage class is high so that when the higher CT of framework, and primary difficulty of pressurizeing is big, needs
Framework is climbed up by Insulation ladder to pressurize, there is the biggish person and equipment safety risk.Moreover, operation needs two groups
Personnel, a group of people add surge voltage in primary side using dry cell, another a group of people secondary side pointer microampere meter into
Row measurement, according to the throw of pointer direction of a compression aspect and secondary side microampere meter, judges the polarity of CT, it is clear that in this way
Measurement method so that the work of CT polarity measurement is expended more manpower and material resources.
Summary of the invention
This reality is novel to provide a kind of current transformer polarity measurement device, is improved a pressuring method, makes to grasp
Make personnel and once pressurizeed from climbing up the framework of eminence, and realizes the one of polarity instruction device and voltage generation circuit
Body, it is only necessary to which the operation of current transformer polarity measurement can be completed in a people, greatly reduces the work of current transformer polarity measurement
The person and equipment safety risk, reduce the consuming of manpower and material resources, have considerable economic benefit.
In order to achieve the above objectives, the invention provides the following technical scheme:
A kind of current transformer polarity measurement device, including device noumenon and external a p-wire hook and second test
Line, described device ontology include power module, polarity instruction module, a pressurized control module；
The power module is electrically connected with a pressurized control module, a pressurized control module and described one
Secondary p-wire hook connects, the other end of a p-wire hook and the primary side of current transformer connect, the primary pressurization
Control module controls the voltage output of the power module, and is carried out once by a p-wire hook to current transformer
Pressurization；
The polarity instruction module is connect with the second test line, the other end and Current Mutual Inductance of the second test line
The secondary side of device connects, and the polarity instruction module carries out current measurement to current transformer by the second test line and refers to
Show polarity.
By measuring device integration, collect power supply pressurization and display polarity in a device, it is only necessary to which electricity can be completed in a people
The work of current transformer polarity measurement, reduces the consuming of manpower and material resources；And pass through the one of a p-wire hook and current transformer
The quick hook joint connection in secondary side, the secondary side grafting of second test line and current transformer, improve a pressuring method,
So that operator is once pressurizeed from climbing up the framework of eminence, greatly reduces the people of current transformer polarity measurement work
Body and equipment safety risk.
Further, the power module is composed in series by several chargeable storages.Battery passes through once pressurization control
Molding block controls output voltage, is once pressurizeed to current transformer, one time pressurized control module can be according to polarity instruction mould
The polarity instruction situation of block, is adjusted the output voltage of battery.
Further, the polarity instruction module is equipped with mA terminal and com terminal, the mA terminal and the com terminal point
The second test line is not connected.
Further, the polarity instruction module is equipped with the polarity that milliampere dial plate is used to indicate current transformer.
Polarity instruction module is identical as the deflection principle of milliammeter, when electric current is flowed by mA terminal, and com terminal flows out,
The pointer positively biased of milliampere dial plate can be by analyzing primary pressurized condition conversely, pointer is reverse-biased, secondary throw of pointer situation,
To measure the polarity of current transformer.
Further, a pressurized control module is equipped with positive terminal and negative terminal, the positive terminal
With the negative terminal respectively with a p-wire hook connects.Connect the p-wire hook and electric current of positive terminal
The primary side end of incoming cables hook joint of mutual inductor connects a p-wire hook and the primary side outlet of current transformer of negative terminal
Hold hook joint.
Further, the positive terminal is electrically connected in described device body interior with the anode of the power module, institute
Negative terminal is stated to be electrically connected in described device body interior with the cathode of the power module.Power module passes through positive terminal
Column and negative terminal output voltage pressurize to current transformer.
Further, a pressurized control module is equipped with indicator light and pressurized control switch, the indicator light and
The pressurized control switch is connected in the circuit that the negative terminal is connect with the negative electrode of the power module.Refer to
Show that lamp is used to indicate whether power module has connection, one time pressurized control switch has different stalls, can control power module
Binding post output voltage, different gears is selected according to the no-load voltage ratio of current transformer, when current transformer ratio is smaller,
The voltage pressurization for selecting smaller gear, when current transformer ratio is larger, selects the voltage of larger gear to pressurize, if polarity
The throw of pointer of indicating module is unobvious, then the primary side of current transformer needs to add bigger voltage, is formed more in secondary side
Big electric current just can make throw of pointer obvious, preferably judge the polarity of current transformer, keep its measurement more acurrate.
Further, a p-wire hook includes telescopic insulating bar and the line hook at the top of it, the line hook and electricity
The primary side hook joint of current transformer, once p-wire, the other end of a p-wire are equipped with primary the line hook connects
Binding post, the primary connection column are connect with a pressurized control module.
By the primary side hook joint of line hook and current transformer at the top of telescopic insulating bar, line hook is by binding post and once
The connection of pressurized control module, plugs into quick and easy, simultaneous retractable insulating bar adjustable retractable length makes operator from climbing up
The framework of eminence is once pressurizeed, and the person and equipment safety risk of the work of current transformer polarity measurement are greatly reduced.
Further, the bottom of the telescopic insulating bar is equipped with insulation handle, and the insulation handle is equipped with limit rubber ring.Absolutely
Edge handle and limit rubber ring are made using the good insulating materials of insulation performance, operator can be protected not incuded
Electricity injury, has ensured the personal safety of survey crew very well.
Further, the both ends of the second test line are equipped with secondary connection column, wherein secondary connection column described in one end with
The secondary side of current transformer connects, and secondary connection column described in the other end is connect with the polarity instruction module.Use long enough
Second test line, one end connected by the Leading-out Terminal in Secondary Side of binding post and current transformer, the other end and polarity instruction mould
Block connection, convenient and efficient, connection is reliable.
The invention has the benefit that
1, measuring device integration, tester temporarily raises when solving traditional test, including battery, experiment line,
The materials such as pointer microampere meter, lap bars, Insulation ladder, the time-consuming and laborious problem of the preparation of material；
2, when overcoming traditional test, the randomness built and unstability of equipment, device back panel wiring are reliably not easy
It loosens, external connection is good, and contact is reliable；
3, a pressuring method is improved, operator is made once to be pressurizeed from climbing up the framework of eminence,
Greatly reduce the person and equipment safety risk of the work of current transformer polarity measurement；
4, easy to operate, do not need to cooperate, it is integrated with voltage generation circuit to realize polarity instruction device, it is only necessary to one
The work of current transformer polarity measurement can be completed in people, reduces the consuming of manpower and material resources, has considerable economic benefit.
Detailed description of the invention
Fig. 1 is overall structure diagram of the invention；
Fig. 2 is the structural schematic diagram of device noumenon；
Fig. 3 is the structural schematic diagram of a p-wire hook；
Fig. 4 is the structural schematic diagram of second test line；
Fig. 5 is the schematic diagram that the present apparatus carries out polarity measurement to current transformer；
In figure: 1- device noumenon, 11- power module, 12- polarity instruction module, 13- pressurized control module, a 14- refer to
Show lamp, pressurized control switch of 15-, p-wire hook of 2-, 21- telescopic insulating bar, 22- line hook, 23- p-wire,
24- primary connection column, 25- insulation handle, 3- second test line, 31- secondary connection column.
Specific embodiment
The attached figures are only used for illustrative purposes and cannot be understood as limitating the patent；In order to better illustrate this embodiment, attached
Scheme certain components to have omission, zoom in or out, does not represent the size of actual product；To those skilled in the art,
The omitting of some known structures and their instructions in the attached drawings are understandable.Being given for example only property of positional relationship is described in attached drawing
Illustrate, should not be understood as the limitation to this patent.
Embodiment 1:
As depicted in figs. 1 and 2, a kind of current transformer polarity measurement device, including device noumenon 1 and external primary survey
Line hook 2 and second test line 3 are tried, device noumenon 1 includes 12, power module 11, polarity instruction module pressurized control modules
13；
If power module 11 is composed in series by multiple chargeable storages, power module 11 and a pressurized control module 13
Electrical connection, a pressurized control module 13 are connect with a p-wire hook 2, the other end and Current Mutual Inductance of a p-wire hook 2
The primary side of device connects, and a pressurized control module 13 controls the voltage output of power module 11, and passes through a p-wire hook 2
It is once pressurizeed to current transformer；
Polarity instruction module 12 is connect with second test line 3, the other end of second test line 3 and current transformer it is secondary
Side connection, polarity instruction module 12 carry out current measurement to current transformer by second test line 3 and indicate polarity.
In the present embodiment, polarity instruction module 12 is equipped with mA terminal and com terminal, is additionally provided with a milliampere dial plate, mA terminal
It is separately connected second test line 3 with com terminal, polarity instruction module 12 is identical as the deflection principle of milliammeter, when electric current is by mA
Terminal flows into, when com terminal flows out, the pointer positively biased of milliampere dial plate, conversely, pointer is reverse-biased, it can be by analyzing primary pressurization
Situation, secondary throw of pointer situation, to measure the polarity of current transformer.
In the present embodiment, a pressurized control module 13 is equipped with positive terminal and negative terminal, positive terminal
Connect respectively with a p-wire hook 2 with negative terminal, positive terminal the inside of device noumenon 1 with power module 11 just
Pole electrical connection, negative terminal are electrically connected in 1 inside of device noumenon with the cathode of power module 11, negative terminal and power supply mould
It is also in series with indicator light 14 and a pressurized control switch 15 in the circuit of the negative electrode connection of block 11, indicator light 14 is used to indicate
Whether power module 11 has connection, and one time pressurized control switch 15 has different stalls, including "off", " KK1 ", " KK2 ", when
Control switch is in "off", the positive and negative electrode binding post Non voltage output of device, when control switch is at " KK1 ", device
Positive and negative electrode binding post exports larger voltage, and when control switch is at " KK2 ", the positive and negative electrode binding post of device exports small electric
Pressure.Different gears is selected according to the no-load voltage ratio of current transformer, when current transformer ratio is smaller, selects " KK2 " gear
Voltage pressurization selects the voltage pressurization of " KK1 " gear when current transformer ratio is larger, if polarity instruction module 12
Throw of pointer is unobvious, then the primary side of current transformer needs to add bigger voltage, forms bigger electric current just in secondary side
Throw of pointer can be made obvious, preferably judge the polarity of current transformer, keep its measurement more acurrate.
As shown in figure 3, a p-wire hook 2 includes telescopic insulating bar 21 and the line hook 22 being fixed at the top of it, line hook 22
Once p-wire 23, the other end of a p-wire 23 are equipped with primary connection column 24 for connection.One of them p-wire hook 2
Line hook 22 and the primary side end of incoming cables hook joint of current transformer, primary connection column 24 and a pressurized control module 13 anode
Binding post grafting；The line hook 22 of another p-wire hook 2 and primary side leading-out terminal hook joint, the primary connection of current transformer
The negative terminal grafting of column 24 and a pressurized control module 13.It is mutual by the line hook 22 and electric current at 21 top of telescopic insulating bar
The primary side hook joint of sensor, line hook 22 can hook the end of incoming cables of current transformer, the screw hole on leading-out terminal terminal plate, can
It is reliably connected, contact is good, and line hook 22 is connect by binding post with a pressurized control module 13, plugs into quick and easy, simultaneously
21 adjustable retractable length of telescopic insulating bar makes operator once be pressurizeed from climbing up the framework of eminence, substantially reduces
The person and equipment safety risk of current transformer polarity measurement work.
Wherein, the bottom of telescopic insulating bar 21 is equipped with insulation handle 25, and insulation handle 25 is equipped with limit rubber ring, slippage state
Hand 25 and limit rubber ring are made using the good insulating materials of insulation performance, and operator can be protected not by induced electricity
Injury, has ensured the personal safety of survey crew very well.
As shown in figure 4, the both ends of second test line 3 are equipped with secondary connection column 31；Wherein the two of a second test line 3
One end of secondary binding post 31 and the secondary side head end plug connection of current transformer, other end secondary connection column 31 and polarity instruction
The mA terminal plug connection of module 12；The two of one end of the secondary connection column 31 of another second test line 3 and current transformer
Secondary side tail end plug connection, the com terminal plug connection of other end secondary connection column 31 and polarity instruction module 12.Using enough
Long second test line 3, one end are connected by the secondary side of binding post and current transformer, the other end and polarity instruction module 12
Connection, convenient and efficient, connection is reliable.
As shown in figure 5, current transformer include primary side end of incoming cables P1, primary side leading-out terminal P2, secondary side head end S1 and
Secondary side tail end S2, four ports should be connect respectively with respective lines；
Power module 11 is composed in series by six chargeable storages of B1~B6, each battery 2V；
The milliammeter of polarity instruction module 12, milliammeter are equipped with mA terminal and com terminal, and there are also milliampere dial plates；
One time pressurized control module 13 is connected on the current supply circuit of power module 11, and one time pressurized control module 13 includes
The anode of the positive terminal of "+", the negative terminal of "-", indicator light and control switch, positive terminal and battery is even
It connects, the cathode connection of negative terminal indicating lights connected in series and control switch and battery, there are three gears for control switch, are respectively
"off", " KK1 ", " KK2 ", when switch is in "off", "+,-" binding post Non voltage output of device, when switch is at " KK1 "
When, "+,-" binding post of device exports 12V voltage, when switch is at the position " KK2 ", device "+,-" binding post output 6V electricity
Pressure.Different gears is selected according to the no-load voltage ratio of current transformer, when current transformer ratio is smaller, the position " KK2 " is selected to survey
Amount selects the position " KK2 " measurement when current transformer ratio is larger, and the deflection of polarity instruction list index is unobvious, primary to need
Add bigger voltage, just throw of pointer can be made obvious in the bigger electric current of secondary formation.
Test polarity chron is being carried out, mA terminal passes through the secondary of 31 current transformer of secondary connection column of second test line 3
Side head end S1 grafting, com terminal are inserted by the secondary connection column 31 of second test line 3 and the secondary side head end S2 of current transformer
It connects, 24 grafting of primary connection column of the positive terminal of "+" and a p-wire hook 2, the line hook 22 of a p-wire hook 2 passes through
Screw hole of 21 hook joint of telescopic insulating bar on the primary side end of incoming cables P1 terminal plate of current transformer, the negative terminal of "-"
Existed with the line hook 22 of 24 grafting of primary connection column of a p-wire hook 2, a p-wire hook 2 by 21 hook joint of telescopic insulating bar
Screw hole on the primary side end of incoming cables P2 terminal plate of current transformer, can test after wiring is connected, and according to
The current transformer tested selects the voltage output of different stalls, is placed in control switch " KK1 " or " KK2 ", observes milliampere
The milliampere hand of dial deflection of table can determine whether the polarity of current transformer, and after use, control switch is placed in "off"
It can stop once pressurizeing, and a p-wire hook 2 and second test line 3 are removed and stored, for use next time.
Measuring device integration is collected power supply pressurization and display polarity in a device, it is only necessary to a people by the present invention
The work of current transformer polarity measurement is completed, the consuming of manpower and material resources is reduced；And pass through a p-wire hook 2 and Current Mutual Inductance
The quick hook joint connection of the primary side of device, the secondary side grafting of second test line 3 and current transformer, carry out a pressuring method
It improves, so that operator is once pressurizeed from climbing up the framework of eminence, greatly reduce current transformer polarity measurement
The person and equipment safety risk of work.
Obviously, the above embodiment of the present invention be only to clearly illustrate example of the present invention, and not be pair
The restriction of embodiments of the present invention.For those of ordinary skill in the art, may be used also on the basis of the above description
To make other variations or changes in different ways.There is no necessity and possibility to exhaust all the enbodiments.It is all this
Made any modifications, equivalent replacements, and improvements etc., should be included in the claims in the present invention within the spirit and principle of invention
Protection scope within.
Claims (10)
1. a kind of current transformer polarity measurement device, which is characterized in that including device noumenon and an external p-wire hook
With second test line, described device ontology includes power module, polarity instruction module, a pressurized control module；
The power module is electrically connected with a pressurized control module, a pressurized control module and the primary survey
Line hook connects are tried, the other end of a p-wire hook and the primary side of current transformer connect, a pressurized control
Module controls the voltage output of the power module, and once add to current transformer by a p-wire hook
Pressure；
The polarity instruction module is connect with the second test line, the other end of the second test line and current transformer
Secondary side connection, the polarity instruction module carry out current measurement to current transformer by the second test line and indicate pole
Property.
2. a kind of current transformer polarity measurement device according to claim 1, which is characterized in that the power module by
Several chargeable storages are composed in series.
3. a kind of current transformer polarity measurement device according to claim 1, which is characterized in that the polarity instruction mould
Block is equipped with mA terminal and com terminal, and the mA terminal and the com terminal are separately connected the second test line.
4. a kind of current transformer polarity measurement device according to claim 1, which is characterized in that the polarity instruction mould
Block is equipped with the polarity that milliampere dial plate is used to indicate current transformer.
5. a kind of current transformer polarity measurement device according to claim 1, which is characterized in that the primary pressurization control
Molding block is equipped with positive terminal and negative terminal, the positive terminal and the negative terminal respectively with it is described primary
P-wire hook connects.
6. a kind of current transformer polarity measurement device according to claim 5, which is characterized in that the positive terminal
It is electrically connected in described device body interior with the anode of the power module, the negative terminal is in described device body interior
It is electrically connected with the cathode of the power module.
7. a kind of current transformer polarity measurement device according to claim 6, which is characterized in that the primary pressurization control
Molding block is equipped with indicator light and a pressurized control switch, and the indicator light and pressurized control switch are connected on described
In the circuit that negative terminal is connect with the negative electrode of the power module.
8. a kind of current transformer polarity measurement device according to claim 1, which is characterized in that a p-wire
Hook includes telescopic insulating bar and the line hook at the top of it, the primary side hook joint of the line hook and current transformer, the line hook
Once p-wire, the other end of a p-wire are equipped with primary connection column, the primary connection column and described one for connection
Secondary pressurized control module connection.
9. a kind of current transformer polarity measurement device according to claim 8, which is characterized in that the telescopic insulating bar
Bottom be equipped with insulation handle, the insulation handle be equipped with limit rubber ring.
10. a kind of current transformer polarity measurement device according to claim 1, which is characterized in that the second test
The both ends of line are equipped with secondary connection column, wherein the secondary side connection of the secondary connection column and current transformer of one end, separately
The secondary connection column of one end is connect with the polarity instruction module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910784594.2A CN110389280A (en) | 2019-08-23 | 2019-08-23 | A kind of current transformer polarity measurement device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910784594.2A CN110389280A (en) | 2019-08-23 | 2019-08-23 | A kind of current transformer polarity measurement device |
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| CN110389280A true CN110389280A (en) | 2019-10-29 |
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| CN201910784594.2A Pending CN110389280A (en) | 2019-08-23 | 2019-08-23 | A kind of current transformer polarity measurement device |
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| CN110596522A (en) * | 2019-11-06 | 2019-12-20 | 国网新疆电力有限公司阿克苏供电公司 | Portable wireless current transformer polarity testing device |
| CN117192235A (en) * | 2023-09-11 | 2023-12-08 | 国网山东省电力公司蒙阴县供电公司 | Current transformer transformation ratio and polarity testing device |
| CN117192235B (en) * | 2023-09-11 | 2024-07-05 | 国网山东省电力公司蒙阴县供电公司 | Current transformer transformation ratio and polarity testing device |
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