CN209015854U - Improve the cable tail structure of the big N-terminal dielectric level of voltage transformer - Google Patents
Improve the cable tail structure of the big N-terminal dielectric level of voltage transformer Download PDFInfo
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- CN209015854U CN209015854U CN201822182963.4U CN201822182963U CN209015854U CN 209015854 U CN209015854 U CN 209015854U CN 201822182963 U CN201822182963 U CN 201822182963U CN 209015854 U CN209015854 U CN 209015854U
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- cable tail
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- voltage transformer
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Abstract
The utility model relates to a kind of cable tail structures for improving the big N-terminal dielectric level of voltage transformer; including cable tail; it is characterized in that the end of cable tail is provided with conductive nut; conductive contact is connected on nut; cable tail is electrically connected with nut, contact formation; it is coated with insulating protective sleeve in the outside of one section of cable tail by its end, outer diameter and the big N-terminal outlet hole of voltage transformer of insulating protective sleeve match, and the outer end of insulating protective sleeve is provided with ring flange.Its main feature is that: the pressure resistance of cable tail structure and anti-tamper performance are good, good be electrically connected can be formed with big N-terminal, it is safe and reliable, structure is simple, reduces process flow, reduces the production cost, convenient and reliable operation is installed, it is time saving and energy saving, product operational reliability is improved, higher product standard requirement is met.
Description
Technical field
The utility model relates to a kind of voltage transformer connecting component, a kind of especially big N-terminal of raising voltage transformer is exhausted
The cable tail structure of edge level.
Background technique
The voltage transformer used on GIS switchgear, its main feature is that external surface grounded zero potential when product operation；Voltage
Big N-terminal, that is, the ground terminal and secondary terminals of mutual inductor are drawn jointly from voltage transformer secondary outlet hole with gage system.Electricity
Press the test of product export specified in mutual inductor standard GB/T.20840.3-2013, it is desirable that do big N-terminal to secondary winding and ground work
Frequency pressure test contacts with each other to each other since big N-terminal ground lead and secondary line are drawn jointly, major insulation between the two
The line skin wrapped up outside lead copper core is relied primarily on, the insulating capacity of line skin is limited, when being higher than industrial frequency withstand voltage acceptance test standard,
Being very likely to cause big N-terminal, industrial frequency withstand voltage punctures over the ground and between secondary winding.In Product transport circular flow, operational mistake
Misunderstanding causes secondary lead wires line skin impaired, big N-terminal industrial frequency withstand voltage breakdown or insulated electro over the ground and between secondary winding when causing to check and accept
Resistance is unsatisfactory for requiring.
In order to overcome the above problem, traditional solution is that upper Insulating heat shrink is covered outside lead, so as to improve drawing
The dielectric strength of line.This method operating procedure is cumbersome, higher cost and outer diameter is larger unsightly, brings to production process very big
Trouble.
Summary of the invention
The purpose of this utility model is to provide a kind of cable tail knots for improving the big N-terminal dielectric level of voltage transformer
Structure is connected using contact type, and installation is easy to operate, and structure is simple, effectively improves big N-terminal over the ground and secondary winding industrial frequency withstand voltage is exhausted
The cable tail of edge level.
The technical solution of the utility model is: a kind of cable tail improving the big N-terminal dielectric level of voltage transformer
Structure, including cable tail, it is characterised in that the end of cable tail is provided with conductive nut, and conductive touching is connected on nut
Head, cable tail are electrically connected with nut, contact formation, are coated with insulation protection in the outside of one section of cable tail by its end
Set, outer diameter and the big N-terminal outlet hole of voltage transformer of insulating protective sleeve match, and the outer end of insulating protective sleeve is provided with flange
Disk.
The nut is with externally threaded nut, and nut is fixed on the end of cable tail, is equipped with interior spiral shell with one end
The cylindrical contact of line is threadedly coupled.
The insulating protective sleeve is that silastic material is made and has certain thickness protective case.
It is provided by the utility model it is a kind of improve the big N-terminal dielectric level of voltage transformer cable tail structure, by
Conductive contact is arranged in cable tail end, and big N-terminal is formed with cable tail and is effectively reliably electrically connected.In the cable for leaning on end
Insulating protective sleeve is set outside lead, protects this section of cable tail not influenced by external factor and cause to damage, insulating protective sleeve
It is interference fit with the big N-terminal outlet hole of voltage transformer, the big N-terminal of voltage transformer is sealed in outlet hole, keeps it resistance to over the ground
Pressure is not influenced by filthy and height above sea level factor, improves resistance to voltage levels over the ground.Cable tail in voltage transformer outlet hole and
Insulating protective sleeve is fixed by ring flange, is kept it solid and reliable in transport circular flow, is reduced and do caused breakdown by accidentally behaviour
Probability.Insulating protective sleeve outside cable tail is made of silastic material, and insulation, antifriction intensity are much larger than PVC series
Material, relatively original cable tail improve big N-terminal resistance to voltage levels over the ground.Using cable tail structure can make big N-terminal with it is secondary
Lead separation, increase big N-terminal cable tail between secondary lead wires at a distance from, improve big N-terminal to voltage transformer secondary lead and
Ground industrial frequency withstand voltage is horizontal, meanwhile, the copper wire diameter of cable tail is big, improves overcurrent capability.
The utility model is characterized in that: the pressure resistance of cable tail structure and anti-tamper performance are good, can be formed with big N-terminal good
Electrical connection, safe and reliable, structure is simple, reduces process flow, reduces the production cost, and installs convenient and reliable operation, saves
Shi Shengli improves product operational reliability, meets higher product standard requirement.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the use state diagram of the utility model.
Specific embodiment
The utility model is further elaborated with reference to the accompanying drawing:
As shown in Figure 1, the cable tail structure provided by the utility model for improving the big N-terminal dielectric level of voltage transformer is
It is fixedly connected with conductive nut 2 in the end of cable tail 5, conductive nut and cable copper core, which pass through, to be welded and fused, conductive
Nut is equipped with external screw thread, sets internal thread cylindrical contact 1 with one end and is threadedly coupled, in one section of cable tail for leaning on its end
Outside be coated with insulating protective sleeve 3, insulating protective sleeve uses silastic material, and silicon rubber pressure injection is wrapped in electricity using mold
Outside cable lead, the insulating protective sleeve for being formed with certain thickness and matching with the big N-terminal outlet hole of voltage transformer, insulating protective sleeve
It is interference fit with the big N-terminal outlet hole of voltage transformer.The ring flange 4 of the outer end setting of insulating protective sleeve, cable tail is touched
Head end sealing is in the big N-terminal outlet hole of voltage transformer.
Fig. 2 is that cable tail structure is mounted on the schematic diagram on voltage transformer, and cable tail is assembled in mutual induction of voltage
Process on device is: smearing silicon in the outer surface of voltage transformer outlet internal surface of hole and cable tail insulating protective sleeve first
Then rouge is integrally inserted into the cable tail of contact end in voltage transformer outlet hole, contact is made to be against the spring 7 of big N-terminal 6
On, ring flange is fixed on voltage transformer pour mass finally by screw, the cable tail of contact end is prevented to be detached from outlet
Hole.
Claims (3)
1. a kind of cable tail structure for improving the big N-terminal dielectric level of voltage transformer, including cable tail, it is characterised in that electricity
The end of cable lead is provided with conductive nut, and conductive contact is connected on nut, and cable tail is electrically connected with nut, contact formation
It connects, is coated with insulating protective sleeve, the outer diameter and mutual induction of voltage of insulating protective sleeve in the outside of one section of cable tail by its end
The big N-terminal outlet hole of device matches, and the outer end of insulating protective sleeve is provided with ring flange.
2. the cable tail structure according to claim 1 for improving the big N-terminal dielectric level of voltage transformer, it is characterised in that
The nut is with externally threaded nut, and nut is fixed on the end of cable tail, sets internal thread cylinder with one end
Shape contact is threadedly coupled.
3. the cable tail structure according to claim 1 for improving the big N-terminal dielectric level of voltage transformer, it is characterised in that
The insulating protective sleeve is that silastic material is made and has certain thickness protective case.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822182963.4U CN209015854U (en) | 2018-12-25 | 2018-12-25 | Improve the cable tail structure of the big N-terminal dielectric level of voltage transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822182963.4U CN209015854U (en) | 2018-12-25 | 2018-12-25 | Improve the cable tail structure of the big N-terminal dielectric level of voltage transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209015854U true CN209015854U (en) | 2019-06-21 |
Family
ID=66844268
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822182963.4U Active CN209015854U (en) | 2018-12-25 | 2018-12-25 | Improve the cable tail structure of the big N-terminal dielectric level of voltage transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209015854U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112927904A (en) * | 2021-03-26 | 2021-06-08 | 合肥齐兴电器有限责任公司 | All-insulated lead based on voltage transformer or booster |
-
2018
- 2018-12-25 CN CN201822182963.4U patent/CN209015854U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112927904A (en) * | 2021-03-26 | 2021-06-08 | 合肥齐兴电器有限责任公司 | All-insulated lead based on voltage transformer or booster |
| CN112927904B (en) * | 2021-03-26 | 2022-02-25 | 合肥齐兴电器有限责任公司 | All-insulated lead based on voltage transformer or booster |
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