CN109001586B - Polarity detection method for current transformer - Google Patents
Polarity detection method for current transformer Download PDFInfo
- Publication number
- CN109001586B CN109001586B CN201810559489.4A CN201810559489A CN109001586B CN 109001586 B CN109001586 B CN 109001586B CN 201810559489 A CN201810559489 A CN 201810559489A CN 109001586 B CN109001586 B CN 109001586B
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- Prior art keywords
- current transformer
- adjusting block
- base body
- adjusting
- wiring
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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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/04—Housings; Supporting members; Arrangements of terminals
- G01R1/0408—Test fixtures or contact fields; Connectors or connecting adaptors; Test clips; Test sockets
- G01R1/0416—Connectors, terminals
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R35/00—Testing or calibrating of apparatus covered by the other groups of this subclass
- G01R35/02—Testing or calibrating of apparatus covered by the other groups of this subclass of auxiliary devices, e.g. of instrument transformers according to prescribed transformation ratio, phase angle, or wattage rating
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transformers For Measuring Instruments (AREA)
Abstract
The invention discloses a polarity detection method of a current transformer, which comprises the following steps: (1) adjusting the conductive ends of all the adjusting blocks to positions opposite to the two terminal slots; (2) short-circuiting the secondary windings of all current transformers; (3) detecting; (4) judging the polarity of a secondary winding of the current transformer according to the rotation state of a pointer of the ammeter; (5) repeating the steps (3) and (4) to detect the next current transformer; (6) and (5) repeating the step until all the current transformers are detected. The polarity detection method of the current transformer adopts the polarity detector of the current transformer. The invention does not need the secondary winding terminal to be repeatedly wired, and has high switching speed, thereby avoiding the open circuit of the secondary winding of the current transformer.
Description
Technical Field
The invention relates to a power detection method, in particular to a polarity detection method of a current transformer.
Background
Chinese patent No. 201210422230.8 discloses a secondary wiring device for testing characteristics of a current transformer, one end of which is connected to a wiring terminal through a double-pole double-throw switch, and the other end of which can be placed in a test terminal or a short-circuit terminal, wherein the wiring terminal is connected to a lead wire led out from a secondary winding of the current transformer, and the short-circuit terminal is grounded, thereby realizing switching between two states of "on test" and "short-circuit grounding" without wiring.
Before testing, the testing device needs to connect a double-pole double-throw switch on a secondary coil of a current transformer to be tested, and needs to be provided with a short-circuit terminal and a testing terminal. The operation is cumbersome.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the polarity detection method of the current transformer is convenient to operate.
In order to solve the technical problem, the polarity detector of the current transformer comprises a current meter and a wiring device, wherein the wiring device comprises a base body and a plurality of wiring modules arranged on the base body, the base body is made of insulating materials, each wiring module comprises two terminal slots arranged on the base body and an adjusting block inserted on the base body, one end of each adjusting block is made of conductive materials, the other end of each adjusting block is made of insulating materials, two conductive sheets are respectively arranged on two side faces of the insulating end of each adjusting block and are insulated, the two conductive sheets are respectively connected with two wiring terminals of the current meter through leads, after the terminals are inserted in the two terminal slots, the adjusting blocks are provided with two states that the two conductive sheets are respectively contacted with the two terminals in the position adjusting process, and the adjusting blocks are also provided with states that the conductive ends are contacted with the two terminals.
In order to conveniently plug the terminals, the number of the wiring modules is 3-6, all the wiring modules are arranged in a straight line shape, and two terminal slots of each wiring module and slots of the adjusting block are arranged in an I shape. Therefore, the terminal slot is wider than the adjusting block slot, the adjusting block can be clamped in the terminal slot, and the terminal is not easy to fall off when the adjusting block slides.
In order to further prevent the terminal from falling off, the slots of the adjusting block penetrate through the base body, the terminal slots do not penetrate through the base body, and the notches of all the terminal slots are positioned on the same side of the base body.
The invention discloses a polarity detection method of a current transformer, which comprises the following steps: (1) the current transformer polarity detector is adopted to adjust the conductive ends of all the adjusting blocks to positions opposite to the two terminal slots; (2) respectively inserting two wiring terminals of a secondary winding of each current transformer to be detected into two terminal slots of one wiring module to enable the secondary windings of all the current transformers to be in short circuit; (3) detecting, namely adjusting an adjusting block corresponding to a current transformer to be detected to enable two conducting strips to be respectively opposite to two terminal slots, so that a secondary winding of the current transformer is connected with an ammeter, then connecting and instantly disconnecting a primary winding of the current transformer with a power supply, and observing the ammeter; (4) judging the polarity of a secondary winding of the current transformer according to the rotation state of a pointer of the ammeter; (5) adjusting the position of the adjusting block to enable the measured secondary winding to be in short circuit, and repeating the steps (3) and (4) to detect the next current transformer; (6) and (5) repeating the step until all the current transformers are detected.
The invention has the beneficial effects that: the invention adopts a special wiring device, one wiring device can be connected with a plurality of secondary windings, the short circuit state of the secondary windings and the connection state of the secondary windings and an ammeter are switched by adjusting the position of the adjusting block, the terminals of the secondary windings are not required to be repeatedly wired, and the switching speed is high, thereby avoiding the open circuit of the secondary windings of the current transformer.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a sectional view taken along line A-A of FIG. 1;
FIG. 3 is a sectional view taken along line B-B of FIG. 2;
FIG. 4 is an enlarged view of the structure of the element 4;
in the figure: 1. ammeter, 2, base body, 3, terminal slot, 4, adjusting block, 5, wire, 4-1, conductive end, 4-2, insulating end, 4-3 and conducting strip.
Detailed Description
As shown in fig. 1, fig. 2 and fig. 3, the polarity detector of the current transformer comprises an ammeter 1 and a wiring device, wherein the wiring device comprises a base body 2 and a plurality of wiring modules arranged on the base body 2, the base body 2 is made of an insulating material, the wiring modules comprise two terminal slots 3 arranged on the base body 2 and an adjusting block 4 inserted on the base body 2, as shown in fig. 4, one end of the adjusting block 4 is made of a conductive material, the other end of the adjusting block 4 is made of an insulating material to form a conductive end 4-1 and an insulating end 4-2, two side surfaces of the insulating end 4-2 of the adjusting block 4 are respectively provided with a conductive sheet 4-3, the two conductive sheets 4-3 are insulated, the two conductive sheets 4-3 are respectively connected with two wiring terminals of the ammeter 1 through a lead 5, after terminals are inserted in the two terminal slots 3, the adjusting block 4 is in the position adjusting process, the regulating block has a state where two conductive pieces 4-3 are in contact with the two terminals, respectively, and the regulating block 4 also has a state where a conductive terminal 4-1 is in contact with the two terminals.
The number of the wiring modules is 4, all the wiring modules are arranged in a straight line shape, and two terminal slots 3 of each wiring module and slots of the adjusting block 4 are arranged in an I shape. The slots of the adjusting block 4 penetrate through the base body 2, the terminal slots 3 do not penetrate through the base body, and the notches of all the terminal slots 3 are positioned on the same side of the base body 2.
A polarity detection method for a current transformer comprises the following steps: (1) the polarity detector of the current transformer shown in fig. 1, 2 and 3 is adopted to adjust the conductive ends of all the adjusting blocks 4 to the positions opposite to the two terminal slots 3; (2) respectively inserting two wiring terminals of a secondary winding of each current transformer to be detected into two terminal slots 3 of a wiring module to enable the secondary windings of all the current transformers to be in short circuit; (3) detecting, namely adjusting an adjusting block 4 corresponding to a current transformer to be detected to enable two conducting strips 4-3 to be respectively opposite to two terminal slots 3, so that a secondary winding of the current transformer is connected with an ammeter (a short circuit state is removed), then connecting and instantly disconnecting the primary winding of the current transformer with a power supply, and observing the ammeter; (4) judging the polarity of a secondary winding of the current transformer according to the rotation state of a pointer of the ammeter; (5) adjusting the position of the adjusting block to enable the measured secondary winding to be in short circuit, and repeating the steps (3) and (4) to detect the next current transformer; (6) and (5) repeating the step until all the current transformers are detected.
Claims (1)
1. A polarity detection method of a current transformer is characterized by comprising the following steps: the method comprises the following steps: (1) the polarity detection instrument for the current transformer is adopted, the polarity detection instrument for the current transformer comprises a current meter and a wiring device, the wiring device comprises a base body and a plurality of wiring modules arranged on the base body, the base body is made of insulating materials, the wiring modules comprise two terminal slots arranged on the base body and an adjusting block inserted on the base body, one end of the adjusting block is made of conductive materials, the other end of the adjusting block is made of insulating materials, two conductive sheets are respectively arranged on two side surfaces of the insulating end of the adjusting block and are insulated, the two conductive sheets are respectively connected with two wiring terminals of the current meter through leads, when the terminals are inserted in the two terminal slots, the adjusting block is provided with a state that the two conductive sheets are respectively contacted with the two terminals in the position adjusting process, the adjusting block is also provided with a state that the conductive ends are contacted with the two terminals, and the two terminal slots of each wiring module and the slots of the adjusting block, the slots of the adjusting blocks penetrate through the base body, the terminal slots do not penetrate through the base body, the notches of all the terminal slots are positioned on the same side of the base body, and the conductive ends of all the adjusting blocks are adjusted to be opposite to the two terminal slots; (2) respectively inserting two wiring terminals of a secondary winding of each current transformer to be detected into two terminal slots of one wiring module to enable the secondary windings of all the current transformers to be in short circuit; (3) detecting, namely adjusting an adjusting block corresponding to a current transformer to be detected to enable two conducting strips to be respectively opposite to two terminal slots, so that a secondary winding of the current transformer is connected with an ammeter, then connecting and instantly disconnecting a primary winding of the current transformer with a power supply, and observing the ammeter; (4) judging the polarity of a secondary winding of the current transformer according to the rotation state of a pointer of the ammeter; (5) adjusting the position of the adjusting block to enable the measured secondary winding to be in short circuit, and repeating the steps (3) and (4) to detect the next current transformer; (6) and (5) repeating the step until all the current transformers are detected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810559489.4A CN109001586B (en) | 2016-01-18 | 2016-01-18 | Polarity detection method for current transformer |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810559489.4A CN109001586B (en) | 2016-01-18 | 2016-01-18 | Polarity detection method for current transformer |
| CN201610029503.0A CN105652146B (en) | 2016-01-18 | 2016-01-18 | A kind of current transformer polarity detector and detection method |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610029503.0A Division CN105652146B (en) | 2016-01-18 | 2016-01-18 | A kind of current transformer polarity detector and detection method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109001586A CN109001586A (en) | 2018-12-14 |
| CN109001586B true CN109001586B (en) | 2020-07-17 |
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Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810559489.4A Active CN109001586B (en) | 2016-01-18 | 2016-01-18 | Polarity detection method for current transformer |
| CN201610029503.0A Active CN105652146B (en) | 2016-01-18 | 2016-01-18 | A kind of current transformer polarity detector and detection method |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610029503.0A Active CN105652146B (en) | 2016-01-18 | 2016-01-18 | A kind of current transformer polarity detector and detection method |
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| CN (2) | CN109001586B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005057228A1 (en) * | 2003-11-12 | 2005-06-23 | International Business Machines Corporation | Ionization test for electrical verification |
| CN102944700A (en) * | 2012-10-30 | 2013-02-27 | 武汉华源电力工程有限责任公司 | Secondary wiring device for test of characteristics of a current transformer |
| CN204330944U (en) * | 2015-01-14 | 2015-05-13 | 李振东 | Instrument for testing polarity of current transformer |
| CN204832412U (en) * | 2015-08-07 | 2015-12-02 | 国网山东省电力公司淄博供电公司 | Novel combined instrument transformer polarity test appearance |
| CN204832398U (en) * | 2015-05-21 | 2015-12-02 | 国家电网公司 | Current transformer secondary wiring detection device that take a percentage more |
| CN204925309U (en) * | 2015-07-31 | 2015-12-30 | 国网山东沂源县供电公司 | Current transformer polarity tester |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202562967U (en) * | 2012-05-15 | 2012-11-28 | 珠海格力电器股份有限公司 | Rapid wiring device and testing system |
| CN203224526U (en) * | 2013-04-07 | 2013-10-02 | 国家电网公司 | A high-voltage wire connector used for AC withstanding voltage |
| CN103344935B (en) * | 2013-05-10 | 2016-04-13 | 国家电网公司 | Full-automatic low-voltage current transformer test termination |
| CN103715525A (en) * | 2013-12-30 | 2014-04-09 | 重庆雷士照明有限公司 | Fast-inserting terminal block |
| JP6270618B2 (en) * | 2014-05-14 | 2018-01-31 | 三菱電機株式会社 | Connection conductor unit |
| CN204271321U (en) * | 2014-08-29 | 2015-04-15 | 广东华声电器股份有限公司 | A kind of American cross two insert |
-
2016
- 2016-01-18 CN CN201810559489.4A patent/CN109001586B/en active Active
- 2016-01-18 CN CN201610029503.0A patent/CN105652146B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005057228A1 (en) * | 2003-11-12 | 2005-06-23 | International Business Machines Corporation | Ionization test for electrical verification |
| CN102944700A (en) * | 2012-10-30 | 2013-02-27 | 武汉华源电力工程有限责任公司 | Secondary wiring device for test of characteristics of a current transformer |
| CN204330944U (en) * | 2015-01-14 | 2015-05-13 | 李振东 | Instrument for testing polarity of current transformer |
| CN204832398U (en) * | 2015-05-21 | 2015-12-02 | 国家电网公司 | Current transformer secondary wiring detection device that take a percentage more |
| CN204925309U (en) * | 2015-07-31 | 2015-12-30 | 国网山东沂源县供电公司 | Current transformer polarity tester |
| CN204832412U (en) * | 2015-08-07 | 2015-12-02 | 国网山东省电力公司淄博供电公司 | Novel combined instrument transformer polarity test appearance |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105652146B (en) | 2018-11-16 |
| CN105652146A (en) | 2016-06-08 |
| CN109001586A (en) | 2018-12-14 |
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| Date | Code | Title | Description |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20200623 Address after: No.12, Lu Ou Road, Hudai Town, Binhu District, Wuxi City, Jiangsu Province Applicant after: Wuxi Kewei Electric Co.,Ltd. Address before: 262700 Shandong city in Weifang Province, Shouguang City Street, Guangming Road San Jin Pu Garden City Sanyou border agency name Applicant before: Xin Xinghua |
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| TA01 | Transfer of patent application right | ||
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| CP03 | Change of name, title or address |
Address after: Room 1822-772, D2 North, No. 32 Dazhou Road, Yuhuatai District, Nanjing City, Jiangsu Province, 210000 Patentee after: Jiangsu Exway Electric Co.,Ltd. Address before: No. 12 Luyou Road, Hudai Town, Binhu District, Wuxi City, Jiangsu Province, 214100 Patentee before: Wuxi Kewei Electric Co.,Ltd. |
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| CP03 | Change of name, title or address |