CN114242384A - A device for easy replacement of low-voltage current transformers - Google Patents
A device for easy replacement of low-voltage current transformers Download PDFInfo
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- CN114242384A CN114242384A CN202111522886.2A CN202111522886A CN114242384A CN 114242384 A CN114242384 A CN 114242384A CN 202111522886 A CN202111522886 A CN 202111522886A CN 114242384 A CN114242384 A CN 114242384A
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- current transformer
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 5
- 229910052802 copper Inorganic materials 0.000 claims description 4
- 239000010949 copper Substances 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 4
- 238000009434 installation Methods 0.000 abstract description 2
- 230000009194 climbing Effects 0.000 abstract 1
- 239000004020 conductor Substances 0.000 description 15
- 230000000670 limiting effect Effects 0.000 description 3
- 230000001174 ascending effect Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/06—Mounting, supporting or suspending transformers, reactors or choke coils not being of the signal type
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/29—Terminals; Tapping arrangements for signal inductances
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F38/00—Adaptations of transformers or inductances for specific applications or functions
- H01F38/20—Instruments transformers
- H01F38/22—Instruments transformers for single phase AC
- H01F38/28—Current transformers
- H01F38/30—Constructions
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transformers For Measuring Instruments (AREA)
Abstract
本发明涉及互感器安装技术领域，公开了一种便于更换低压电流互感器的装置。低压电流互感器中间设置有穿线孔，变压器低压侧的一次导线穿过穿线孔对低压电流互感器进行安装，一次导线包括第一段导线、第二段导线和连接段导线，连接段导线的两端分别与第一段导线和第二段导线可拆装相连，低压电流互感器安装于连接段导线上。需要更换低压电流互感器时，将连接段导线与第一段导线和第二段导线的连接拆开，可轻松将连接段导线拆卸下来，对低压电流互感器进行更换。更换过程中无需将整根一次导线从低压负荷开关接线柱或变压器变低侧接线柱解开拉出，操作更加简单，极大地提高了工作效率，而且免去了登高作业，提高了操作安全性。
The invention relates to the technical field of transformer installation, and discloses a device for facilitating replacement of a low-voltage current transformer. There is a threading hole in the middle of the low-voltage current transformer, and the primary wire on the low-voltage side of the transformer is installed through the threading hole to install the low-voltage current transformer. The ends are detachably connected with the first section of wire and the second section of wire respectively, and the low-voltage current transformer is installed on the connection section of the wire. When it is necessary to replace the low-voltage current transformer, disconnect the connection section of the wire from the first section of wire and the second section of wire, and the connection section of the wire can be easily removed to replace the low-voltage current transformer. During the replacement process, there is no need to untie and pull out the entire primary wire from the terminal of the low-voltage load switch or the terminal on the lower side of the transformer, which makes the operation easier, greatly improves the work efficiency, and eliminates the need for climbing operations, which improves the operation safety. .
Description
Technical Field
The invention relates to the technical field of mutual inductor installation, in particular to a device convenient for replacing a low-voltage current mutual inductor.
Background
When measuring alternating current's heavy current, for secondary instrument measurement, need convert the heavy current into standard current and supply relevant instrument to use for, the conversion equipment who uses at present is low-voltage current transformer, and low-voltage current transformer is the equipment that can convert high alternating current into the low current of easy control, has excellent performance, the stable characteristics of precision. The low-voltage current transformer is arranged at the variable-low side (0.4kV) of a 10kV transformer of an electric customer, and a low-voltage copper wire of the transformer needs to penetrate through a threading hole in the middle of the low-voltage current transformer.
When the low-voltage current transformer breaks down and is replaced by a new low-voltage current transformer, the low-voltage wire needs to be disconnected from the wiring column of the low-voltage load switch or the transformer step-down side, the primary low-voltage wire of the transformer is pulled out, the fault current transformer is detached, the primary low-voltage wire of the transformer penetrates into the new current transformer again, and the wiring of the wiring column of the low-voltage load switch or the transformer step-down side is recovered. The working efficiency is low, the speed is slow, and the operation process has risks.
Disconnecting the primary low-voltage conductor and the low-voltage load of the transformerThe operation of wiring of the switch wiring post or the transformer low-side wiring post is complex, and the working efficiency is low; the transformer low-voltage primary lead is made of pure copper, the length is usually more than 10m, and the sectional area is more than 50mm2The weight is more than 25kg, the difficulty of drawing the lead is high, and the physical strength is consumed; need step on transformer rack and carry out the operation, have the high altitude risk of falling.
Disclosure of Invention
The invention aims to provide a device convenient for replacing a low-voltage current transformer, and solves the problems of complex operation, low working efficiency and potential safety hazard existing in the replacement of the conventional low-voltage current transformer.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides a device convenient to change low-voltage current transformer, low-voltage current transformer installs on the primary conductor of transformer low pressure side, be provided with the through wires hole in the middle of the low-voltage current transformer, the primary conductor passes the through wires hole is right low-voltage current transformer installs, the primary conductor includes first section wire, second section wire and linkage segment wire, the both ends of linkage segment wire respectively with first section wire with second section wire dismantled and assembled links to each other, low-voltage current transformer install in on the linkage segment wire.
Alternatively, the connecting section of wire is connected with the first section of wire and the second section of wire through bolts.
Alternatively, the connecting segment wires are provided in a plate-like structure.
As an alternative, the connecting section lead is made of a copper material.
As an alternative, the outer cover of the low-voltage current transformer is provided with a box body, and the connecting section wire, the first section wire and the second section wire are located in the box body at the connecting part of the connecting section wire.
As an alternative, the connecting section lead is detachably connected with the inner wall of the box body.
Alternatively, the connecting section conducting wire is connected with the inner wall of the box body through a bolt.
As an alternative, a pillar is arranged on the inner wall of the box body, a screw hole is formed in the pillar and the connecting section wire in a right-to-right mode, and the bolt penetrates through the screw hole to connect the connecting section wire to the pillar.
Alternatively, a voltage line is arranged on the connecting section wire, and the free end of the voltage line is electrically connected with the low-voltage current transformer.
Alternatively, the voltage line is fixed to the connecting segment wire by a bolt.
The invention has the beneficial effects that:
according to the device convenient for replacing the low-voltage current transformer, when the low-voltage current transformer needs to be replaced, the connecting section wire is disconnected with the first section wire and the second section wire, the connecting section wire can be easily detached, then the old low-voltage current transformer is taken down from one end of the connecting section wire, a new low-voltage current transformer is replaced, and then the connecting section wire is connected with the first section wire and the second section wire. Need not to untie the whole root of a wire from low voltage load switch terminal or transformer step-down side terminal and pull out among the change process, the operation is simpler, has greatly improved work efficiency, has removed the operation of ascending a height moreover from, has improved the operational safety nature.
Drawings
FIG. 1 is a first schematic structural view of an apparatus for facilitating low-voltage current transformer replacement according to the present invention;
fig. 2 is a schematic structural diagram ii of the apparatus for facilitating replacement of a low-voltage current transformer according to the present invention.
In the figure:
100. a low-voltage current transformer;
210. a first length of wire; 220. a second section of wire; 230. connecting section wires;
300. a pillar;
400. and a voltage line.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
In the description of the present embodiment, the terms "upper", "lower", "right", "left", and the like are used based on the orientations and positional relationships shown in the drawings only for convenience of description and simplification of operation, and do not indicate or imply that the referred device or element must have a specific orientation, be configured and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.
The first embodiment is as follows:
the low-voltage current transformer is a common conversion device for converting a large current into a standard current to be used by a related instrument and instrument, and is installed on a low-voltage primary conductor of a transformer.
In order to solve the above problems, as shown in fig. 1, this embodiment provides a device convenient for replacing a low-voltage current transformer, the low-voltage current transformer 100 is installed on a primary conductor at a low-voltage side of a transformer, a threading hole is provided in the middle of the low-voltage current transformer 100, the primary conductor at the low-voltage side of the transformer passes through the threading hole to install the low-voltage current transformer 100, the primary conductor includes a first section conductor 210, a second section conductor 220 and a connecting section conductor 230, two ends of the connecting section conductor 230 are detachably connected with the first section conductor 210 and the second section conductor 220, respectively, and the low-voltage current transformer 100 is installed on the connecting section conductor 230.
When the low-voltage current transformer 100 needs to be replaced, the connection of the connecting section wire 230 and the first section wire 210 and the second section wire 220 is disconnected, the connecting section wire 230 can be easily detached, then the old low-voltage current transformer 100 is taken down from one end of the connecting section wire 230, a new low-voltage current transformer 100 is replaced, and then the connecting section wire 230 is connected with the first section wire 210 and the second section wire 220. Need not to untie the whole root of a wire from low voltage load switch terminal or transformer step-down side terminal and pull out among the change process, the operation is simpler, has greatly improved work efficiency, has removed the operation of ascending a height moreover from, has improved the operational safety nature.
Preferably, as shown in fig. 1, the connection section wire 230 is connected with the first section wire 210 and the second section wire 220 by bolts, so that the connection is firm and the operation is convenient.
As shown in fig. 2, in order to facilitate the bolt connection, the connection section wire 230 is configured as a plate-shaped structure, screw holes are disposed at two ends of the plate-shaped structure, the connection portions between the first section wire 210 and the second section wire 220 and the connection section wire 230 are also configured as a plate-shaped structure, screw holes are disposed at plate-shaped end portions of the first section wire 210 and the second section wire 220, and a bolt passes through the first section wire 210 or the second section wire 220 to be connected with the screw holes on the connection section wire 230.
Preferably, the connecting section wire 230 is made of copper material, and has good conductive effect.
Further, the low-voltage current transformer 100 is covered by a box, and the connection section wire 230, the first section wire 210 and the second section wire are located in the box at the connection position with the connection section wire 230. The box protects the low-voltage current transformer 100 and the wires connected with the low-voltage current transformer 100 from being damaged by the outside.
Further, the connecting section wire 230 is detachably connected with the inner wall of the box body, the low-voltage current transformer 100 is sleeved on the connecting section wire 230, the connecting section wire 230 is connected to the box body, the low-voltage current transformer 100 is fixed, and the low-voltage current transformer 100 can be effectively prevented from swinging randomly to affect normal operation.
Specifically, the connection segment wire 230 is connected to the inner wall of the case by a bolt. The inner wall of the box body is provided with a strut 300, screw holes are oppositely arranged on the strut 300 and the connecting section lead 230, and bolts penetrate through the screw holes to connect the connecting section lead 230 to the strut 300. Preferably, the pillar 300 can be fixed on the inner wall of the box, and the inner wall of the box can be attached to the low-voltage current transformer 100 by the pillar 300, so that the inner wall of the box can limit the low-voltage current transformer 100, and the low-voltage current transformer 100 can be prevented from swinging, thereby ensuring accurate and stable operation of the low-voltage current transformer 100. Preferably, two pillars 300 are provided, two pillars 300 are respectively located at two sides of the low voltage current transformer 100, and the two pillars 300 can provide a better limiting effect for the low voltage current transformer 100.
Further, as shown in fig. 1, a voltage line 400 is disposed on the connecting section wire 230, and a free end of the voltage line 400 is electrically connected to the low-voltage current transformer 100 to supply power to the low-voltage current transformer 100. Preferably, the voltage line 400 is fixed on the connecting section wire 230 by a bolt, so that the connection is convenient, and the disassembly and assembly are quick and convenient.
Example two:
the apparatus for replacing a low-voltage current transformer provided by this embodiment is substantially the same as the first embodiment, except that: the connecting section wire 230 is connected with the first section wire 210 and the second section wire 220 in a plugging mode, the connecting terminals are arranged at two ends of the connecting section wire 230, the connecting terminals are also arranged at one ends of the first section wire 210 and the second section wire 220 connected with the connecting section wire 230, the connecting section wire 230 is connected with the first section wire 210 and the second section wire 220 through the plugging matching of the connecting terminals, the dismounting is more convenient and faster, the outer sides of the connecting terminals are insulated, and the operation is safer.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Numerous obvious variations, adaptations and substitutions will occur to those skilled in the art without departing from the scope of the invention. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111522886.2A CN114242384A (en) | 2021-12-13 | 2021-12-13 | A device for easy replacement of low-voltage current transformers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111522886.2A CN114242384A (en) | 2021-12-13 | 2021-12-13 | A device for easy replacement of low-voltage current transformers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114242384A true CN114242384A (en) | 2022-03-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111522886.2A Pending CN114242384A (en) | 2021-12-13 | 2021-12-13 | A device for easy replacement of low-voltage current transformers |
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| CN (1) | CN114242384A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202076117U (en) * | 2011-03-14 | 2011-12-14 | 北京四方继保自动化股份有限公司 | Dry type current transformer having a small auxiliary screen |
| CN103093941A (en) * | 2013-01-31 | 2013-05-08 | 山东彼岸电力科技有限公司 | Current transformer wiring terminal |
| CN205900299U (en) * | 2016-08-24 | 2017-01-18 | 国网山东省电力公司高唐县供电公司 | Quick-installed knife-type low-voltage current transformer |
| CN206584814U (en) * | 2017-03-23 | 2017-10-24 | 国家电网公司 | A kind of low-voltage current mutual inductor secondary side terminal screw |
| CN109411220A (en) * | 2018-11-07 | 2019-03-01 | 黄浩平 | Combined instrument transformer and electrical equipment |
| CN210403488U (en) * | 2019-09-09 | 2020-04-24 | 嘉兴威士顿电子科技有限公司 | Current transformer with primary coil and magnetic shielding |
| CN210429532U (en) * | 2019-09-09 | 2020-04-28 | 嘉兴威士顿电子科技有限公司 | Current transformer with compact structure |
| CN212113433U (en) * | 2020-04-29 | 2020-12-08 | 肖远奇 | Open-closed type feed-through current transformer |
| CN213366350U (en) * | 2020-11-24 | 2021-06-04 | 天津市百利纽泰克电气科技有限公司 | Primary terminal connecting structure of current transformer |
-
2021
- 2021-12-13 CN CN202111522886.2A patent/CN114242384A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202076117U (en) * | 2011-03-14 | 2011-12-14 | 北京四方继保自动化股份有限公司 | Dry type current transformer having a small auxiliary screen |
| CN103093941A (en) * | 2013-01-31 | 2013-05-08 | 山东彼岸电力科技有限公司 | Current transformer wiring terminal |
| CN205900299U (en) * | 2016-08-24 | 2017-01-18 | 国网山东省电力公司高唐县供电公司 | Quick-installed knife-type low-voltage current transformer |
| CN206584814U (en) * | 2017-03-23 | 2017-10-24 | 国家电网公司 | A kind of low-voltage current mutual inductor secondary side terminal screw |
| CN109411220A (en) * | 2018-11-07 | 2019-03-01 | 黄浩平 | Combined instrument transformer and electrical equipment |
| CN210403488U (en) * | 2019-09-09 | 2020-04-24 | 嘉兴威士顿电子科技有限公司 | Current transformer with primary coil and magnetic shielding |
| CN210429532U (en) * | 2019-09-09 | 2020-04-28 | 嘉兴威士顿电子科技有限公司 | Current transformer with compact structure |
| CN212113433U (en) * | 2020-04-29 | 2020-12-08 | 肖远奇 | Open-closed type feed-through current transformer |
| CN213366350U (en) * | 2020-11-24 | 2021-06-04 | 天津市百利纽泰克电气科技有限公司 | Primary terminal connecting structure of current transformer |
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