CN203909209U - High-low voltage current voltage transformer polarity tester - Google Patents
High-low voltage current voltage transformer polarity tester Download PDFInfo
- Publication number
- CN203909209U CN203909209U CN201420169619.0U CN201420169619U CN203909209U CN 203909209 U CN203909209 U CN 203909209U CN 201420169619 U CN201420169619 U CN 201420169619U CN 203909209 U CN203909209 U CN 203909209U
- Authority
- CN
- China
- Prior art keywords
- housing
- power supply
- terminal
- selector switch
- point contact
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000009434 installation Methods 0.000 abstract 1
- 238000012360 testing method Methods 0.000 description 7
- 230000006698 induction Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Abstract
The utility model relates to a high-low voltage current voltage transformer polarity tester in the power industry meter installation and electric wiring work, and especially relates to the high-low voltage current voltage transformer polarity tester comprising a housing (1) and a power supply (7) arranged in the housing (1); an upper portion of the housing (1) is provided with a milliammeter (2) connected with a secondary wiring terminal (4) on a lower end of the housing (1); the housing (1) is provided with a selection switch (6) and a point contact button (3); the selection switch (6) and the point contact button (3) are connected with a primary wiring terminal (5) on the lower end of the housing (1) through the power supply (7) and an auxiliary circuit. The high-low voltage current voltage transformer polarity tester is similar to a universal meter, compact in structure, portable, can realize single man operation, and a connecting line has sufficient length so as to satisfy field work needs.
Description
Technical field
The utility model relates to a kind of power industry dress table and connects high-low pressure electric current, the polarity testing device for voltage mutual inductor in electricity work, particularly a kind of high-low pressure current-voltage transformer polarity tester.
Background technology
After completing, dress table must carry out the polarity test of high-low pressure electric current, voltage transformer (VT) before power transmission.At present, owing to there is no special-purpose polarity test instrument, when carrying out polarity test, must be operated by two people: a people is at the primary side of high-voltage mutual inductor simultaneously, utilize dry cell to be connected the end of incoming cables of current transformer and the limit phase of leading-out terminal or voltage transformer (VT) and middle phase with wire, then lead to, disconnected operation, simultaneously another people aims at limit phase and the middle phase of corresponding Current Transformer Secondary side end of incoming cables and leading-out terminal outlet or voltage transformer (VT) in terminal box with pointer multimeter, the yawing moment of observing multimeter pointer judges that whether wiring polarity is correct, waste of manpower resource, work efficiency is low.
Utility model content
According to above deficiency of the prior art, problem to be solved in the utility model is: provide a kind of simple in structure, easy to use, can realize one man operation, the high-low pressure current-voltage transformer polarity tester that can effectively increase work efficiency.
The utility model solves the technical scheme that its technical matters adopts:
Described high-low pressure current-voltage transformer polarity tester, comprise housing, enclosure interior arranges power supply, housing top arranges milliammeter, milliammeter is connected with the secondary wiring terminals of housing lower end, selector switch and point contact type button are set on housing, and selector switch is connected the primary connection terminal of housing lower end with accessory circuit by power supply with point contact type button.
The selector switch of described high-low pressure current-voltage transformer polarity tester can be selected corresponding circuit according to connecting circuit situation, closed selector switch, press point contact type button, after circuit turn-on, make current transformer or voltage transformer (VT) produce induction current, by induction current, follow the accuracy of the interaction Test Field wiring of milliammeter, easy to use, can one man operation, reduce cost of labor, improved work efficiency.
Preferably, power supply, selector switch, point contact type button and primary connection terminal form series arm, primary connection terminal comprises an input terminal and an outlet terminal, an outlet terminal connects the negative pole of power supply, the positive pole of power supply connects selector switch, and selector switch is by resistance tie point touch button, and point contact type button connects an input terminal, or selector switch tie point touch button, point contact type button connects an input terminal.
Preferably, secondary wiring terminals comprises secondary input terminal and secondary outlet terminal, and milliammeter is connected between secondary input terminal and secondary outlet terminal.
Preferably, two joint 1.5V dry cells for power acquisition.Volume is little, is convenient for carrying, and is convenient for changing.
The beneficial effect that the utility model has is:
Input terminal, outlet terminal and interlock circuit are connected described high-low pressure current-voltage transformer polarity tester and connectivity port and the milliammeter of terminal box secondary outlet terminal, input terminal concentrate in together, shape is similar to multimeter, compact conformation, be easy to carry, can realize one man operation, connecting wire has enough length, can meet the needs of work on the spot.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is circuit theory diagrams of the present utility model;
Fig. 3 is elementary diagram of the present utility model;
Wherein, 1, housing; 2, milliammeter; 3, point contact type button; 4, secondary wiring terminals; 5, primary connection terminal; 6, selector switch; 7, power supply; 8, an input terminal; 9, an outlet terminal; 10, secondary input terminal; 11, secondary outlet terminal; 12, end of incoming cables of CT; 13, leading-out terminal of CT; 14, bis-ends of incoming cables of terminal box CT; 15, terminal box CT secondary outgoing line end.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described further:
As shown in Figure 1, high-low pressure current-voltage transformer polarity tester described in the utility model, comprise housing 1, housing 1 inside arranges power supply 7, housing 1 top arranges milliammeter 2, milliammeter 2 is connected with the secondary wiring terminals 4 of housing 1 lower end, and selector switch 6 and point contact type button 3 are set on housing 1, and selector switch 6 is connected the primary connection terminal 5 of housing 1 lower end with accessory circuit by power supply 7 with point contact type button 3.After selector switch closure, press point contact type button, after circuit turn-on, make current transformer or voltage transformer (VT) produce induction current, by induction current, follow the accuracy of the interaction Test Field wiring of milliammeter, easy to use, can one man operation, reduce cost of labor, improved work efficiency.
As described in Figure 2, power supply 7, selector switch 6, point contact type button 3 and primary connection terminal 5 form series arm, primary connection terminal 5 comprises an input terminal 8 and an outlet terminal 9, an outlet terminal 9 connects the negative pole of power supply 7, the positive pole of power supply 7 connects selector switch 6, and selector switch 6 is by resistance R tie point touch button 3, and point contact type button 3 connects an input terminal 8, or selector switch 6 tie point touch buttons 3, point contact type button 3 connects an input terminal 8.Secondary wiring terminals 4 comprises secondary input terminal 10 and secondary outlet terminal 11, and milliammeter 2 is connected between secondary input terminal 10 and secondary outlet terminal 11.Power supply 7 adopts two joint 1.5V dry cells.
Principle of work of the present utility model and use procedure:
As shown in Figure 3, take measuring current mutual inductor as example, high-low pressure current-voltage transformer polarity tester is when carrying out polarity test, one time input terminal 8 connects end of incoming cables 12 of CT, one time outlet terminal 9 connects leading-out terminal 13 of CT, secondary input terminal 10 connects bis-ends of incoming cables 14 of terminal box CT, secondary outlet terminal 11 connects terminal box CT secondary outgoing line end 15, closed selector switch 6, by the break-make of point contact type button 3 control loops, in the process switching on and off, observe the yawing moment of milliammeter 2 pointers, if deflection to the right (positively biased), illustrate that field wiring is correct, if deflection left (anti-inclined to one side), illustrate that field wiring is wrong, compact conformation, be easy to carry, can realize one man operation.
Claims (1)
1. a high-low pressure current-voltage transformer polarity tester, comprise housing (1), housing (1) inside arranges power supply (7), it is characterized in that: housing (1) top arranges milliammeter (2), milliammeter (2) is connected with the secondary wiring terminals (4) of housing (1) lower end, selector switch (6) and point contact type button (3) are set on housing (1), and selector switch (6) is connected the primary connection terminal (5) of housing (1) lower end with accessory circuit by power supply (7) with point contact type button (3);
Described power supply (7), selector switch (6), point contact type button (3) and primary connection terminal (5) form series arm, primary connection terminal (5) comprises an input terminal (8) and an outlet terminal (9), an outlet terminal (9) connects the negative pole of power supply (7), the positive pole of power supply (7) connects selector switch (6), selector switch (6) is by resistance (R) tie point touch button (3), point contact type button (3) connects an input terminal (8), or selector switch (6) tie point touch button (3), point contact type button (3) connects an input terminal (8),
Described secondary wiring terminals (4) comprises secondary input terminal (10) and secondary outlet terminal (11), and milliammeter (2) is connected between secondary input terminal (10) and secondary outlet terminal (11); Described power supply (7) adopts two joint 1.5V dry cells.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420169619.0U CN203909209U (en) | 2014-04-09 | 2014-04-09 | High-low voltage current voltage transformer polarity tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420169619.0U CN203909209U (en) | 2014-04-09 | 2014-04-09 | High-low voltage current voltage transformer polarity tester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203909209U true CN203909209U (en) | 2014-10-29 |
Family
ID=51783471
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420169619.0U Expired - Fee Related CN203909209U (en) | 2014-04-09 | 2014-04-09 | High-low voltage current voltage transformer polarity tester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203909209U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110389280A (en) * | 2019-08-23 | 2019-10-29 | 广东电网有限责任公司 | A kind of current transformer polarity measurement device |
| CN112698239A (en) * | 2020-11-10 | 2021-04-23 | 国网山东省电力公司淄博供电公司 | Portable mutual inductor polarity tester |
-
2014
- 2014-04-09 CN CN201420169619.0U patent/CN203909209U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110389280A (en) * | 2019-08-23 | 2019-10-29 | 广东电网有限责任公司 | A kind of current transformer polarity measurement device |
| CN112698239A (en) * | 2020-11-10 | 2021-04-23 | 国网山东省电力公司淄博供电公司 | Portable mutual inductor polarity tester |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141029 Termination date: 20190409 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |