CN205656267U - Polarity tester for portable current transformers - Google Patents
Polarity tester for portable current transformers Download PDFInfo
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- CN205656267U CN205656267U CN201620510637.XU CN201620510637U CN205656267U CN 205656267 U CN205656267 U CN 205656267U CN 201620510637 U CN201620510637 U CN 201620510637U CN 205656267 U CN205656267 U CN 205656267U
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- socket
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- voltage source
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- 238000012360 testing method Methods 0.000 claims abstract description 15
- 238000001514 detection method Methods 0.000 abstract description 4
- 238000010276 construction Methods 0.000 abstract description 3
- 238000004804 winding Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
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Abstract
The utility model provides a polarity tester for portable current transformers, relates to electric power construction equipment detection area, and its structure is: be provided with power socket (2) on tester (1), power socket (2) link to each other through the wire with storage battery (3) that set up on tester (1) base, storage battery (3) link to each other with direct current constant voltage source (4), the positive pole of direct current constant voltage source (4) passes through the wire with this and switch (10), pilot lamp (11) and voltage output correct utmost point socket B (9) and link to each other, the negative pole of direct current constant voltage source (4) passes through the wire and links to each other with voltage output end negative pole socket B (8), anodal anodal socket A (7) with the current test end of ampere meter (5) link to each other, the negative pole of ampere meter (5) links to each other with the negative pole socket A (6) of current test end.
Description
One, technical field
The present invention relates to power construction equipment Inspection field, particularly to a kind of portable type current transformer polarity test
Instrument.
Two, background technology
Estimated current mutual inductor polarity detection technique has tended to maturing, however its using method of existing detection technique and
All there is certain drawback in instrument size.As detection method is loaded down with trivial details, it is impossible to apply to have been mounted to the current transformer pole of position
Property test etc., and market its size of existing tester is relatively big, and onsite application is inconvenient for.It addition, find a lot through statistics
Tester needs external 220V power supply, accesses power work at the construction field (site) the most loaded down with trivial details.Further investigation reveals that, Qinghai Province's electric power
Each subordinate prefecture-level company of company all uses aneroid battery as voltage source when current transformer polarity testing, uses power supply and milliampere
The method that table separates is carried out.Still there is a lot of problem in this method of testing, such as clicks on electric current when test with aneroid battery mutual
Winding of sensor there will be the phenomenon of loose contact, the phenomenon that the milliammeter of Secondary Winding is easily damaged, and onsite moving is not
Problem etc. easily.
Three, summary of the invention
A kind of Portable current transformer polarity tester is provided for the above-mentioned technical problem present invention, it is characterised in that:
Being provided with outlet (2) on tester (1), outlet (2) passes through with the storage battery (3) being arranged on tester (1) base
Wire is connected, and storage battery (3) is connected with DC constant voltage source (4), and the positive pole of DC constant voltage source (4) and is switched with this by wire
(10), display lamp (11) and voltage output end positive pole socket B(9) be connected, the negative pole of DC constant voltage source (4) passes through wire and voltage
Negative pole of output end socket B(8) it is connected, the positive pole socket A(7 of the positive pole of ammeter (5) and testing current end) it is connected, ammeter
(5) the negative pole socket A(6 of negative pole and testing current end) it is connected.
The using method of the present invention is: inserted with voltage output end positive pole respectively at the two ends of current transformer winding
Mouthful B(9), voltage output end negative pole socket B(8) be attached with p-wire, then by any one secondary of current transformer
The positive pole socket A(7 of the two ends of the winding principle according to " Same Name of Ends " and testing current end), the negative pole socket A of testing current end
(6) connecting with p-wire, open switch (10), now ammeter (5) rotates forward and then represents that the polarity of current transformer is correct, otherwise
Ammeter (5) reversion then represents the incorrect polarity of current transformer.
The invention have the benefit that storage battery uses 6 joint 1.2V can repeatedly charge the rechargeable battery used, capacity is big, property
Can be stable；Install direct-flow voltage stabilizer additional, voltage can be made to remain at certain value, fluctuate less, add switching device, permissible
Carry out the switching of voltage source conveniently and efficiently, use the milliammeter that positively biased is reverse-biased, ensureing that range disclosure satisfy that field demand
Can reduce the spoilage of ammeter under premise, crust of the device uses 4mm thickness load insulant, is allowed to meet on-the-spot insulation
Requirement.
Four, accompanying drawing explanation
Fig. 1 is present configuration schematic diagram；
Fig. 2 is the test philosophy figure of Fig. 1.
Wherein: 1, tester, 2, outlet, 3, storage battery, 4, DC constant voltage source, 5, ammeter, 6, negative pole socket A, 7,
Positive pole socket A, 8, negative pole socket B, 9, positive pole socket B, 10, switch, 11, display lamp.
Five, detailed description of the invention
Embodiment 1, a kind of Portable current transformer polarity tester, it is characterised in that: tester is provided with electricity on (1)
Source socket (2), outlet (2) is connected by wire with the storage battery (3) being arranged on tester (1) base, and storage battery (3) is with straight
Stream constant pressure source (4) is connected, and the positive pole of DC constant voltage source (4) is defeated with switch (10), display lamp (11) and voltage with this by wire
Go out proper pole socket B(9) it is connected, the negative pole of DC constant voltage source (4) passes through wire and voltage output end negative pole socket B(8) be connected,
The positive pole socket A(7 of the positive pole of ammeter (5) and testing current end) it is connected, the negative pole of ammeter (5) is negative with testing current end
Pole socket A(6) it is connected.
Claims (1)
1. a Portable current transformer polarity tester, it is characterised in that: it is provided with outlet (2) on tester (1),
Outlet (2) is connected by wire with the storage battery (3) being arranged on tester (1) base, storage battery (3) and DC constant voltage source
(4) being connected, the positive pole of DC constant voltage source (4) with this and switchs (10), display lamp (11) and voltage output end positive pole by wire
Socket B(9) it is connected, the negative pole of DC constant voltage source (4) passes through wire and voltage output end negative pole socket B(8) be connected, ammeter
(5) the positive pole socket A(7 of positive pole and testing current end) it is connected, the negative pole of ammeter (5) and the negative pole socket of testing current end
A(6) it is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620510637.XU CN205656267U (en) | 2016-05-31 | 2016-05-31 | Polarity tester for portable current transformers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620510637.XU CN205656267U (en) | 2016-05-31 | 2016-05-31 | Polarity tester for portable current transformers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205656267U true CN205656267U (en) | 2016-10-19 |
Family
ID=57405414
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620510637.XU Active CN205656267U (en) | 2016-05-31 | 2016-05-31 | Polarity tester for portable current transformers |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205656267U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105842579A (en) * | 2016-05-31 | 2016-08-10 | 国网青海省电力公司西宁供电公司 | Portable current transformer polarity tester |
-
2016
- 2016-05-31 CN CN201620510637.XU patent/CN205656267U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105842579A (en) * | 2016-05-31 | 2016-08-10 | 国网青海省电力公司西宁供电公司 | Portable current transformer polarity tester |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |