CN209069965U - DC Resistance Test of Transformer rapid wiring device - Google Patents
DC Resistance Test of Transformer rapid wiring device Download PDFInfo
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- CN209069965U CN209069965U CN201821361477.2U CN201821361477U CN209069965U CN 209069965 U CN209069965 U CN 209069965U CN 201821361477 U CN201821361477 U CN 201821361477U CN 209069965 U CN209069965 U CN 209069965U
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- binding post
- transformer
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- test
- over switch
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- 238000012360 testing method Methods 0.000 title claims abstract description 55
- 230000005283 ground state Effects 0.000 claims abstract description 8
- 230000007935 neutral effect Effects 0.000 claims abstract description 7
- 239000004020 conductor Substances 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims description 2
- 230000009466 transformation Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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Abstract
The utility model relates to a kind of DC Resistance Test of Transformer rapid wiring devices, its technical characteristics is: including transformer binding post, change-over switch, test apparatus binding post and ground connection binding post, transformer binding post is voltage link column, the electric current binding post of high, medium and low three-phase line end and neutral point, and test apparatus binding post is corresponding with transformer binding post；Change-over switch is 4 and including connection status and ground state, the other end of the side connection transformer voltage binding post and electric current binding post of each change-over switch, each change-over switch is separately connected test apparatus binding post and ground connection binding post by connection status and ground state.The utility model is designed reasonably, the quick test function for realizing phase resistance and line resistance in D.C. resistance test avoids and frequently disconnects line work, improves test efficiency, and ensure that the accuracy of test result, have many advantages, such as that structure is concise, safe and reliable, easy to use, flexible operation.
Description
Technical field
The utility model belongs to transformer test technical field, especially a kind of DC Resistance Test of Transformer fast-wiring
Device.
Background technique
Direct current resistance m easurem ent is a particularly important project in transformer test, by measurement, can check equipment
The defects of whether there is or not poor contact, failure welding, coil fault and wiring errors for galvanic circle.High-pressure side is opened using tap
The high-power transformer of pass needs to carry out patching operations constantly between three-phase and neutral point, no when carrying out D.C. resistance test
But it takes a substantial amount of time, and there is also security risks for frequent high altitude operation, simultaneously as it is excessive to tear patching operations open, pole
Wire clamp poor contact is easily caused, the accuracy and comparativity of test result under different position of tapping switch are influenced.
Utility model content
The purpose of the utility model is to overcome the deficiencies in the prior art, and it is quick to provide a kind of DC Resistance Test of Transformer
Termination solves the problems, such as that patching operations are complicated, safety and reliability are low, accuracy is poor.
The utility model solves its technical problem and adopts the following technical solutions to achieve:
A kind of DC Resistance Test of Transformer rapid wiring device, including transformer binding post, change-over switch, test apparatus
Binding post and ground connection binding post, the transformer binding post are voltage link column, the electricity of high, medium and low three-phase line end and neutral point
Binding post is flowed, test apparatus binding post is corresponding with transformer binding post；The change-over switch is 4 and including connection status and connects
Ground state, the side connection transformer voltage binding post and electric current binding post of each change-over switch, each change-over switch it is another
End is separately connected test apparatus binding post and ground connection binding post by connection status and ground state.
The transformer binding post, test apparatus binding post and ground connection binding post are insulating terminal.
Between the transformer binding post and change-over switch, change-over switch and test apparatus binding post and ground connection binding post it
Between be connected by insulated conductor.
The advantages and positive effects of the utility model are as follows:
The utility model is connected with transformer and test apparatus respectively using four change-over switches, realizes D.C. resistance examination
The quick test function for testing middle phase resistance and line resistance, it is more obvious especially for the transformer advantage with tap switch, it keeps away
Exempt from frequently to disconnect line work, improved test efficiency, and ensure that the accuracy of test result, there is structure simplicity, peace
The advantages that complete reliable, easy to use, flexible operation.
Detailed description of the invention
Fig. 1 is the circuit diagram of the utility model.
Specific embodiment
The utility model is further described below in conjunction with attached drawing.
A kind of DC Resistance Test of Transformer rapid wiring device, as shown in Figure 1, including transformer binding post, converting and open
Pass, test apparatus binding post, ground connection binding post G and insulated conductor.The transformer binding post is 8 and for connecting transformation
Device, 8 transformer binding posts are respectively the voltage link column of high, medium and low three-phase line end and neutral point, electric current binding post, above-mentioned
Transformer binding post is measured according to voltage and current input and output in Three-Phase Transformer and neutral point connection and D.C. resistance test
It is designed.Test apparatus binding post is 8 and is used for joint test instrument, 8 test apparatus binding posts and transformer binding post
It is corresponding.Ground connection binding post G is connected to the earthing position of change-over switch for realizing grounding function, can try in DCR of Transformer
Winding is substantially discharged after testing.The change-over switch is 4 and for realizing the conversion of test method, each change-over switch
Including connection status (switch is located at the position a), ground state (switch is located at the position b), the side of each change-over switch, which connects, to be become
Depressor voltage link column and electric current binding post, the other end joint test instrument binding post and ground connection binding post of each change-over switch
G, when switch is located at the position a, the switch joint test instrument binding post, when switch is located at the position b, switch connection ground connection
Binding post G, for example, transformer binding post U2-A is connected with test apparatus binding post U1-A when change-over switch A is in the position a
It is logical, while transformer binding post I2-A is connected with test apparatus binding post I1-A, when change-over switch A is in the position b, transformation
Device binding post U2-A and transformer binding post I2-A is connected with ground connection binding post G.Change-over switch B, C are similarly.The insulated conductor
It is connected for realizing the inside of conversion equipment, such as the connection of transformer binding post and change-over switch, change-over switch and test apparatus
Binding post and the connection for being grounded binding post.
Above-mentioned all binding posts are insulating Design, guarantee that short-circuit conditions do not occur in D.C. resistance test.
It is illustrated by taking the test of three-phase transformer high-pressure side as an example below, high voltage side of transformer is YN pattern.
(1) all change-over switches of the rapid wiring device of the utility model are in the position b, keep ground state.It will
It is grounded binding post G ground connection, it is ensured that transformer is substantially discharged.
(2) wire clamp of 4 groups of D.C. resistance test wires is separately connected Three-Phase Transformer line end and neutral point, voltage and current line
It is respectively connected to the transformer binding post of rapid wiring device.
(3) by taking high pressure A phase directly hinders test as an example, instrument for measuring DC resistance is accessed into test apparatus binding post U1-A, I1-A
With U1-N, I1-N, all change-over switches are transformed into link position a.Then it can be tested.After test, by change-over switch A
It is put into earthing position with N, guarantees that transformer is substantially discharged.
(4) similarly, high pressure B phase, C phase and line resistance can pass through change-over switch and test apparatus and test apparatus
The connection of binding post is realized.
It is emphasized that embodiment described in the utility model be it is illustrative, without being restrictive, therefore this reality
It is all practical new according to this by those skilled in the art with novel including being not limited to embodiment described in specific embodiment
The other embodiments that the technical solution of type obtains also belong to the range of the utility model protection.
Claims (3)
1. a kind of DC Resistance Test of Transformer rapid wiring device, it is characterised in that: opened including transformer binding post, conversion
It closes, test apparatus binding post and ground connection binding post, the transformer binding post are the electricity of high, medium and low three-phase line end and neutral point
Terminal, electric current binding post are crimped, test apparatus binding post is corresponding with transformer binding post；The change-over switch be 4 and including
Connection status and ground state, the side connection transformer voltage binding post and electric current binding post of each change-over switch, Mei Gezhuan
The other end for changing switch is separately connected test apparatus binding post and ground connection binding post by connection status and ground state.
2. DC Resistance Test of Transformer rapid wiring device according to claim 1, it is characterised in that: the transformer
Binding post, test apparatus binding post and ground connection binding post are insulating terminal.
3. DC Resistance Test of Transformer rapid wiring device according to claim 1, it is characterised in that: the transformer
Pass through insulated conductor phase between binding post and change-over switch, between change-over switch and test apparatus binding post and ground connection binding post
Connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821361477.2U CN209069965U (en) | 2018-08-23 | 2018-08-23 | DC Resistance Test of Transformer rapid wiring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821361477.2U CN209069965U (en) | 2018-08-23 | 2018-08-23 | DC Resistance Test of Transformer rapid wiring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209069965U true CN209069965U (en) | 2019-07-05 |
Family
ID=67090845
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821361477.2U Active CN209069965U (en) | 2018-08-23 | 2018-08-23 | DC Resistance Test of Transformer rapid wiring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209069965U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110888084A (en) * | 2019-11-27 | 2020-03-17 | 天威保变（秦皇岛）变压器有限公司 | Method for measuring short-circuit point of winding coil of large transformer |
| CN111337750A (en) * | 2020-02-11 | 2020-06-26 | 深圳供电局有限公司 | Method and device for synchronously testing direct resistance of three-phase winding of cable outgoing type transformer |
-
2018
- 2018-08-23 CN CN201821361477.2U patent/CN209069965U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110888084A (en) * | 2019-11-27 | 2020-03-17 | 天威保变（秦皇岛）变压器有限公司 | Method for measuring short-circuit point of winding coil of large transformer |
| CN111337750A (en) * | 2020-02-11 | 2020-06-26 | 深圳供电局有限公司 | Method and device for synchronously testing direct resistance of three-phase winding of cable outgoing type transformer |
| CN111337750B (en) * | 2020-02-11 | 2021-12-21 | 深圳供电局有限公司 | Method and device for synchronously testing direct resistance of three-phase winding of cable outgoing type transformer |
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