CN203895261U - Combined wire end of short circuit wire of secondary circuit of current-voltage transformer - Google Patents
Combined wire end of short circuit wire of secondary circuit of current-voltage transformer Download PDFInfo
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- CN203895261U CN203895261U CN201420193564.7U CN201420193564U CN203895261U CN 203895261 U CN203895261 U CN 203895261U CN 201420193564 U CN201420193564 U CN 201420193564U CN 203895261 U CN203895261 U CN 203895261U
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- voltage transformer
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- 238000003780 insertion Methods 0.000 claims abstract description 10
- 230000037431 insertion Effects 0.000 claims abstract description 10
- 239000004020 conductor Substances 0.000 claims description 13
- 239000002184 metal Substances 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 9
- 230000004927 fusion Effects 0.000 claims description 2
- 239000012943 hotmelt Substances 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 5
- 238000002844 melting Methods 0.000 description 3
- 238000004804 winding Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 1
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Abstract
The utility model provides a combined wire head of a short circuit wire of a secondary circuit of a current-voltage transformer, which comprises a junction, a short circuit wire and a short connector; wherein, one end of the junction is formed with a fixed connection point, and the other end is formed with a ground wire insertion hole; the short connectors are four in number, one end of each short connector is provided with a terminal flat cable inserting hole, and the other end of each short connector is connected with the fixed connecting point of the junction connector through a short connecting wire. Implement the embodiment of the utility model provides a current-voltage transformer secondary circuit short circuit line combination end of a thread, it uses convenient improvement electric current or voltage secondary circuit short circuit speed, avoids simultaneously with current transformer or with voltage transformer short circuit in-process, the short circuit phenomenon such as unreliable, virtual connecing, the ground point is bad appear to electrical equipment's normal operating has been guaranteed.
Description
Technical Field
The utility model relates to an electric power system transformer overhauls technical field, especially relates to a current-voltage transformer secondary circuit short circuit line combination end of a thread.
Background
In the relay protection work, the secondary circuit of the current transformer needs to be short-circuited frequently, if the short-circuit method is improper, the secondary circuit of the current transformer is likely to be open-circuited, high voltage is generated to burn electrical equipment and even endanger personal safety, and similarly, in the voltage transformer pre-test work, in order to prevent endangering personal safety and equipment safety and ensure the accuracy of test results, the secondary circuit of the voltage transformer needs to be short-circuited and grounded frequently according to the field conditions, so that the short-circuit quality of the secondary circuit of the current transformer and the voltage transformer has very important significance to the electrical equipment and the personal safety.
At present, a secondary circuit short-circuit wire used on a current transformer and a voltage transformer has no unified standard, when the short-circuit wire is connected with the current transformer or the voltage transformer, the short-circuit wire is easy to cause the phenomena of unreliable short circuit, virtual connection, poor grounding point and the like in the short-circuit process (if the voltage transformer is in pre-test operation, the short-circuit is unreliable due to the fact that a thin wire winding mode is adopted on the site, accidents are caused frequently), so that the normal operation of electrical equipment is influenced, and in addition, the working efficiency is reduced due to the complex short-circuit process.
SUMMERY OF THE UTILITY MODEL
The embodiment of the utility model provides a technical problem that will solve provides a current-voltage transformer secondary circuit short circuit line combination end of a thread, and it uses convenient current or voltage secondary circuit short circuit speed that has improved, avoids simultaneously with current transformer or with voltage transformer short circuit in-process, the short circuit unreliable appears, virtual phenomenon such as connect, the ground point is bad to electrical equipment's normal operating has been guaranteed.
In order to solve the technical problem, an embodiment of the present invention provides a combined line head of a short circuit line of a secondary circuit of a current-voltage transformer, which includes a junction, a short circuit line and a short connector; wherein,
one end of the junction is provided with a fixed connection point, and the other end is provided with a ground wire insertion hole;
the short connectors are four in number, one end of each short connector is provided with a terminal flat cable inserting hole, and the other end of each short connector is connected with the fixed connecting point of the junction connector through a short connecting wire.
Wherein, the junction is made of metal conductor material, and the outer surface is coated with an insulating layer.
Wherein, the shorting stub is made of a metal conductor material, and the outer surface of the shorting stub is coated with an insulating layer.
Wherein each short joint is made of a metal conductor material, and the outer surface of each short joint is coated with an insulating layer.
And each short joint and the short connecting wire are connected in a binding manner, a hot-melting sleeving manner or a clamping manner by a clamp.
The short connecting wire and the fixed connecting point of the junction joint are connected in a binding mode, a hot-melting sleeving mode or a clamping mode through a clamp.
Implement the embodiment of the utility model provides a, following beneficial effect has:
the embodiment of the utility model provides an in, owing to only need link to each other the test wire of connecting terminal row looks terminal with the terminal winding displacement patchhole of short connector respectively, link to each other the ground wire with the ground wire patchhole that converges simultaneously, it uses convenient improvement electric current or voltage secondary circuit short circuit speed to the short circuit is reliable, has avoided phenomenons such as virtual connecing, ground connection harmfulness to appear, thereby has guaranteed electrical equipment's normal operating.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings obtained from these drawings still belong to the scope of the present invention without inventive laboriousness.
Fig. 1 is a schematic structural diagram of a short circuit line combined end of a secondary circuit of a current-voltage transformer provided by an embodiment of the present invention;
fig. 2 is an application schematic diagram of a short circuit line combined line head of a secondary circuit of a current-voltage transformer provided by the embodiment of the present invention;
fig. 3 is a schematic view of another application of the short-circuit line combined terminal of the secondary circuit of the current-voltage transformer provided by the embodiment of the present invention;
in the figure: 1-bus connector, 11-fixed connection point, 12-ground wire insertion hole, 2-short connection wire, 3-short connector, 31-terminal flat cable insertion hole, 4-terminal row, 41-phase wire connector, 5-test wire, L-current transformer or voltage transformer side and R-protection side.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1, in the embodiment of the present invention, the short-circuit line combined line head of the secondary circuit of the current-voltage transformer includes a junction 1, a short-circuit line 2 and a short-circuit connector 3; wherein,
one end of the junction 1 is formed with a fixed connection point 11, and the other end is formed with a ground wire insertion hole 12, the ground wire insertion hole 12 being for connection with a ground wire;
the short terminals 3 are four in number, and each short terminal 3 is formed at one end thereof with a terminal bus bar insertion hole 31, the terminal bus bar insertion hole 31 being adapted to be connected to a test wire, and the other end thereof being connected to the fixed connection point 11 of the junction 1 through a short connection wire 2, wherein the test wire is adapted to be connected to phase terminals (e.g., A, B, C and N phase terminals) on the terminal row, so that positive and negative electrons on the phase wires can be transmitted to the short terminal 3 through the test wire and discharged to the ground.
In order to facilitate the conduction and the safety of the conduction, the junction 1, the shorting stub 2 and the shorting stub 3 can be made of various conductive materials and have insulation or other discharge protection measures. The junction 1 of the utility model is made of metal conductor material, and the outer surface is coated with an insulating layer; the short-circuit wire 2 is made of a metal conductor material, and the outer surface of the short-circuit wire is coated with an insulating layer; each short terminal 3 is made of a metallic conductor material, and an outer surface thereof is covered with an insulating layer.
Furthermore, each short connector 3 is connected with the short wire 2 in a binding manner, a thermal fusion sleeve manner or a clamping manner by a clamp.
Furthermore, the short-circuit wires 2 are connected with the fixed connection points 11 of the junction 1 in a binding manner, a hot-melting sleeving manner or a clamping manner by clamps.
Please refer to fig. 2 and fig. 3, which further illustrate the specific application scenario of the short-circuit line combined stub of the secondary circuit of the current-voltage transformer provided by the present invention:
the four short joints 3 are 2cm (centimeter) long, and the insulating layers on the outer surfaces of the four short joints are correspondingly coated with yellow, green, red and black for the convenience of distinguishing;
the short connecting wires 2 are all 10cm long, the number of the short connecting wires is four, the short connecting wires are respectively connected with each short joint 3, the insulating layer on the outer surface of each short joint corresponds to the color of the insulating layer on the outer surface of each short joint 3, namely the color of each short joint 3 is yellow, and the color of the short connecting wire 2 connected with the yellow short joint 3 is also yellow;
the junction 1 was 2cm long and the insulating layer on the outer surface was coated in yellow-green.
Step 1: adopting four test wires 5, wherein one end of each test wire 5 is provided with a clamp or a fork, and the other end is provided with an exposed 2cm metal conductor, connecting one end of each clamp or fork with a terminal flat cable inserting hole 31 of a short joint 3 on the short-circuit wire switching combined wire head in sequence, connecting one end of each exposed 2cm metal conductor with A, B, C and an N-phase wire end on the terminal row 5 in sequence, and checking whether the connection is firm and reliable, wherein the phase wire connectors 41 on a current transformer or a voltage transformer side L and a protection side R are in a connection state (as shown in fig. 2);
step 2: adopting the same test wire 5, connecting one end of a belt clip or a fork with a ground wire insertion hole 12 of a junction 1 on the short-circuit wire switching combined wire head, grounding one end of a metal conductor with an exposed length of 2cm, and checking whether the connection is firm and reliable;
and 3, step 3: after the relay protection is completed and the pre-test work of disconnecting the secondary circuit of the current transformer or the voltage transformer is completed, sequentially disconnecting the phase line connector 41 connected with the current transformer or the voltage transformer side L and the protection side R on the terminal row 5 according to the N, C, B, A sequence (as shown in fig. 3);
and 4, step 4: respectively detaching the test wire 5 to connect with A, B, C and N phase wire ends on the terminal block 5;
and 5, step 5: the dismantling test line 5 is connected with the ground;
and 6, step 6: and respectively detaching the test wire 5 to connect the junction 1 and the short joint 1.
Implement the embodiment of the utility model provides a, following beneficial effect has:
the embodiment of the utility model provides an in, owing to only need link to each other the test wire of connecting terminal row looks terminal with the terminal winding displacement patchhole of short connector respectively, link to each other the ground wire with the ground wire patchhole that converges simultaneously, it uses convenient improvement electric current or voltage secondary circuit short circuit speed to the short circuit is reliable, has avoided phenomenons such as virtual connecing, ground connection harmfulness to appear, thereby has guaranteed electrical equipment's normal operating.
The above disclosure is only a preferred embodiment of the present invention, and certainly should not be taken as limiting the scope of the invention, which is defined by the claims and their equivalents.
Claims (6)
1. A combined wire end of a short circuit wire of a secondary circuit of a current-voltage transformer is characterized by comprising a junction (1), a short circuit wire (2) and a short connector (3); wherein,
one end of the junction (1) is provided with a fixed connection point (11), and the other end is provided with a ground wire insertion hole (12);
the short connectors (3) are four in number, one end of each short connector (3) is provided with a terminal flat cable inserting hole (31), and the other end of each short connector is connected with the fixed connecting point (11) of the junction connector (1) through a short connecting wire (2).
2. The combined stub of the secondary circuit short-circuit wire of the current-voltage transformer as claimed in claim 1, wherein the junction (1) is made of a metal conductor material, and the outer surface of the junction is coated with an insulating layer.
3. The combined stub of the secondary circuit short circuit wire of the current-voltage transformer as claimed in claim 1, wherein the short circuit wire (2) is made of a metal conductor material, and the outer surface of the short circuit wire is coated with an insulating layer.
4. The combined stub of the secondary circuit short-circuit wire of the current-voltage transformer as claimed in claim 1, wherein each short-circuit terminal (3) is made of a metallic conductor material, and the outer surface of the short-circuit terminal is coated with an insulating layer.
5. The combined stub of the secondary circuit short circuit wire of the current-voltage transformer as claimed in any one of claims 1 to 4, wherein the connection mode of each short joint (3) and the short circuit wire (2) is binding, hot-melt sleeving or clamping by a clamp.
6. The combined stub of the secondary circuit short circuit wire of the current-voltage transformer according to any one of claims 1 to 4, wherein the short circuit wire (2) is connected with the fixed connection point (11) of the junction (1) in a binding manner, a thermal fusion sleeve manner or a clamping manner by a clamp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420193564.7U CN203895261U (en) | 2014-04-21 | 2014-04-21 | Combined wire end of short circuit wire of secondary circuit of current-voltage transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420193564.7U CN203895261U (en) | 2014-04-21 | 2014-04-21 | Combined wire end of short circuit wire of secondary circuit of current-voltage transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203895261U true CN203895261U (en) | 2014-10-22 |
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ID=51721632
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420193564.7U Expired - Lifetime CN203895261U (en) | 2014-04-21 | 2014-04-21 | Combined wire end of short circuit wire of secondary circuit of current-voltage transformer |
Country Status (1)
| Country | Link |
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| CN (1) | CN203895261U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105717330A (en) * | 2014-12-04 | 2016-06-29 | 上海西门子线路保护系统有限公司 | Dielectric test connection device for low voltage switch |
| CN108899715A (en) * | 2018-07-05 | 2018-11-27 | 上海思方电气技术有限公司 | A kind of single-phase one point of multiloop a little concentrates the anti-short circuit connector of PT of ground connection |
-
2014
- 2014-04-21 CN CN201420193564.7U patent/CN203895261U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105717330A (en) * | 2014-12-04 | 2016-06-29 | 上海西门子线路保护系统有限公司 | Dielectric test connection device for low voltage switch |
| CN108899715A (en) * | 2018-07-05 | 2018-11-27 | 上海思方电气技术有限公司 | A kind of single-phase one point of multiloop a little concentrates the anti-short circuit connector of PT of ground connection |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20141022 |
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| CX01 | Expiry of patent term |