CN113937682A - Transposition error live-line defect eliminating tool for cross interconnection box - Google Patents
Transposition error live-line defect eliminating tool for cross interconnection box Download PDFInfo
- Publication number
- CN113937682A CN113937682A CN202111315118.XA CN202111315118A CN113937682A CN 113937682 A CN113937682 A CN 113937682A CN 202111315118 A CN202111315118 A CN 202111315118A CN 113937682 A CN113937682 A CN 113937682A
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- Prior art keywords
- transposition
- circuit breaker
- wire
- loops
- tool
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- 230000017105 transposition Effects 0.000 title claims abstract description 61
- 230000007547 defect Effects 0.000 title claims abstract description 16
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 19
- 229910052802 copper Inorganic materials 0.000 claims abstract description 19
- 239000010949 copper Substances 0.000 claims abstract description 19
- 238000000034 method Methods 0.000 claims abstract description 11
- 238000006243 chemical reaction Methods 0.000 claims abstract description 9
- 238000010891 electric arc Methods 0.000 abstract description 6
- 230000007704 transition Effects 0.000 abstract description 3
- 230000006835 compression Effects 0.000 abstract description 2
- 238000007906 compression Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 4
- 238000010009 beating Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G1/00—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines
- H02G1/14—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for joining or terminating cables
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- Supply And Distribution Of Alternating Current (AREA)
Abstract
The invention relates to a tool for eliminating transposition error electrification defects of a cross interconnection box, which comprises: the three-station circuit breaker can realize the connection of two loops, and realizes the sequential conversion of the two loops in three switch states of opening-closing, opening-closing and opening-closing through one operation hole. The external transposition copper bar is connected with the wire inlet and outlet terminals of two loops of the three-station circuit breaker, so that the conversion of two transposition modes is realized. The number of the bypass short-circuit wires is 6, and one end of each bypass short-circuit wire is in compression joint with an incoming and outgoing wire terminal of the three-station circuit breaker through a bolt; the other end is connected with a connecting terminal in the cross interconnection box. And the bypass short-circuit wire is connected with the wiring terminal in the cross interconnection box through a U-shaped wire clamp. It has realized the arc extinguishing operation of bypass short-circuit connection dismouting process through three station circuit breakers to realize the interim transition of no electric arc of transposition mode through external transposition copper bar. The arc discharge risk in the traditional electrified defect eliminating process is avoided.
Description
Technical Field
The invention relates to the technical field of electric power tools, in particular to an electrified defect eliminating tool for transposition errors of a cross interconnection box.
Background
Wrong connection order of transposition copper bars in the cross-connection box can cause cross transposition failure, and hidden errors of the in-box wiring are not easy to find and correct in time in construction and acceptance links. After the cable is put into operation, a failed transposition mode can cause higher voltage and sheath current to appear on the metal sheath of the cable, and threatens the long-term stable operation of the cable. In order to change the cross interconnection system into a correct transposition mode, the transposition copper bars in the box need to be dismantled and reconnected according to a correct sequence, but because of the existence of a larger sheath current, the direct dismantling of the transposition copper bars has an arc discharge risk. In order to complete the live-line defect elimination of the cable cross-connection system under the condition of no power failure, a certain arc extinguishing means is required to ensure the safety in the wiring reconnection process, so that a device for eliminating the live-line defect of the transposition error of the cable cross-connection system needs to be developed.
At present, a cable cross interconnection system transposition error does not have a special electrified defect eliminating device, after a bypass of transposition copper bars is short-circuited basically in a bypass live working mode, transposition copper bars are dismantled and reconnected according to a correct sequence, and then bypass short-circuit wires are dismantled. However, such a live-line fault-eliminating scheme requires a deep understanding of the principle of the transposition by the operator to correctly connect the bypass short-circuit wire, and the arc discharge risk still exists when the bypass short-circuit wire is removed.
Therefore, it is necessary to develop a device for eliminating the electrified defect of the transposition error of the cable cross interconnection system, which can realize the arc extinguishing function in the assembling and disassembling process of the bypass short-circuit wire and can realize the conversion of two transposition modes.
Disclosure of Invention
In order to solve the technical problems in the background art, the invention provides an electrified defect eliminating tool for transposition errors of a cross interconnection box, which realizes arc extinguishing operation in the dismounting and mounting process of a bypass short-circuit wire through a three-station circuit breaker and realizes arc-free temporary transition in a transposition mode through an external transposition copper bar. The arc discharge risk in the traditional electrified defect eliminating process is avoided.
The technical scheme adopted by the invention for solving the technical problems is as follows:
alternately electrified instrument of lacking that disappears of interconnection case transposition error includes:
the three-station circuit breaker can realize the connection of two loops, and realizes the sequential conversion of the two loops in three switch states of opening-closing, opening-closing and opening-closing through one operation hole.
The external transposition copper bar is connected with the wire inlet and outlet terminals of two loops of the three-station circuit breaker, so that the conversion of two transposition modes is realized.
The number of the bypass short-circuit wires is 6, and one end of each bypass short-circuit wire is in compression joint with an incoming and outgoing wire terminal of the three-station circuit breaker through a bolt; the other end is connected with a connecting terminal in the cross interconnection box.
Furthermore, a breaker operation knob is arranged on the three-station breaker.
Further, the cross section of the bypass shorting stub is 15mm2。
Furthermore, the bypass short-circuit wire is connected with the wiring terminal in the cross interconnection box through a U-shaped wire clamp.
Further, the three-position circuit breaker has the arc extinguishing capacity of not less than 200A.
The use method of the transposition error live-line defect eliminating tool for the cross interconnection box comprises the following steps:
s1, two loops of a three-station circuit breaker are switched to a 'separating-separating' state;
s2, respectively connecting A, B, C and 6 wire clamps a, b, c and the like of the device with A, B, C and 6 wiring terminals a, b, c and the like of a cross interconnection box;
s3, two loops of the three-station circuit breaker are switched to a 'separating-closing' state, and bypass short circuit of the transposition copper bar is achieved;
s4, beating the two loops of the three-station circuit breaker to a closing-opening state, and temporarily adjusting the transposition mode to a correct transposition mode through the bypass short-circuit wire;
s5, installing the transposition copper bar according to a correct transposition mode;
s6, two loops of the three-station circuit breaker are switched to a 'separating-separating' state;
s7, removing the bypass short-circuit wire.
The invention has the beneficial effects that:
according to the invention, arc extinguishing operation in the process of dismounting the bypass short-circuit wire is realized through the three-station circuit breaker, and arc-free temporary transition in a transposition mode is realized through the external transposition copper bar. The arc discharge risk in the traditional electrified defect eliminating process is avoided.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a schematic diagram of a correct cross-connect transposition scheme
FIG. 2 is a schematic diagram of an error cross-connection transposition mode
FIG. 3 is a schematic circuit diagram of an electrified defect eliminating device for cable cross-connection system transposition errors
FIG. 4 is a schematic diagram of a cable cross-connection system transposition error live-line defect eliminating device
In the figure:
1. the circuit breaker comprises a three-station circuit breaker, 2, a circuit breaker operating knob, 3, an external transposition copper bar and 4, a bypass short-circuit wire.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
The invention uses the three-station circuit breaker to match with the short-circuit wire, thereby realizing the switching-out operation of the bypass short-circuit wire and the conversion of two transposition modes.
The structure of the invention is divided into three parts.
The three-station circuit breaker 1 can realize connection of two loops, a circuit breaker operation knob 2 is arranged on the three-station circuit breaker 1, sequential switching of the two loops in three switching states of opening-closing, opening-opening and closing-opening is realized through one operation hole, and the three-station circuit breaker has arc extinguishing capacity not lower than 200A.
And the external transposition copper bar 3 is connected with the wire inlet and outlet terminals of two loops of the three-station circuit breaker, so that the conversion of two transposition modes is realized.
The number of the bypass short-circuit wires is 4, 6, the section of each bypass short-circuit wire is 15mm2, and one end of each bypass short-circuit wire is pressed on an incoming and outgoing wire terminal of the three-station circuit breaker by a bolt; the other end is provided with a U-shaped wire clamp for connecting a wiring terminal in the cross interconnection box.
The use process comprises the following steps:
s1, two loops of a three-station circuit breaker are switched to a 'separating-separating' state
S2, A, B, C and 6 wire clamps a, b, c and the like of the device are respectively connected with A, B, C and 6 connecting terminals a, b, c and the like of the cross interconnection box.
And S3, two loops of the three-station circuit breaker are switched to a 'separating-closing' state, so that a bypass short circuit of the transposition copper bar is realized.
And S4, the two loops of the three-station circuit breaker are switched to a closing-opening state, so that the transposition mode is temporarily adjusted to a correct transposition mode through the bypass short-circuit wire.
And S5, installing the transposition copper bar according to a correct transposition mode.
And S6, turning two loops of the three-station circuit breaker to a 'separating-separating' state.
S7, removing the bypass short-circuit wire.
In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (6)
1. Alternately electrified instrument of lacking that disappears of interconnection case transposition error, its characterized in that includes:
the three-station circuit breaker (1) can realize the connection of two loops, and realizes the sequential conversion of the two loops in three switch states of opening-closing, opening-closing and opening-closing through one operation hole.
And the external transposition copper bar (3) is connected with the wire inlet and outlet terminals of two loops of the three-station circuit breaker, so that the conversion of two transposition modes is realized.
The number of the bypass short-circuit wires (4) is 6, and one end of each bypass short-circuit wire is in pressure joint with an incoming and outgoing wire terminal of the three-station circuit breaker through a bolt; the other end is connected with a connecting terminal in the cross interconnection box.
2. The tool of claim 1, wherein the tool is used for eliminating the faulty electrification of the transposition of the cross-connection box,
the three-station circuit breaker (1) is provided with a circuit breaker operation knob (2).
3. The tool of claim 1, wherein the tool is used for eliminating the faulty electrification of the transposition of the cross-connection box,
the cross section of the bypass short-circuit wire (4) is 15mm2。
4. The tool of claim 1, wherein the tool is used for eliminating the faulty electrification of the transposition of the cross-connection box,
and the bypass short-circuit wire (4) is connected with the wiring terminal in the cross interconnection box through a U-shaped wire clamp.
5. The tool of claim 1, wherein the tool is used for eliminating the faulty electrification of the transposition of the cross-connection box,
the three-position circuit breaker (1) has the arc extinguishing capacity of not less than 200A.
6. The use method of the transposition error live-line defect eliminating tool for the cross interconnection box comprises the following steps:
s1, two loops of a three-station circuit breaker (1) are switched to a 'separating-separating' state;
s2, respectively connecting A, B, C and 6 wire clamps a, b, c and the like of the device with A, B, C and 6 wiring terminals a, b, c and the like of a cross interconnection box;
s3, two loops of the three-station circuit breaker (1) are switched to a 'separating-closing' state, and bypass short circuit of the transposition copper bar is achieved;
s4, two loops of the three-station circuit breaker (1) are switched to a closing-opening state, and the transposition mode is temporarily adjusted to a correct transposition mode through the bypass short-circuit wire;
s5, installing the transposition copper bar according to a correct transposition mode;
s6, two loops of the three-station circuit breaker (1) are switched to a 'separating-separating' state;
s7, removing the bypass short-circuit wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111315118.XA CN113937682A (en) | 2021-11-08 | 2021-11-08 | Transposition error live-line defect eliminating tool for cross interconnection box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111315118.XA CN113937682A (en) | 2021-11-08 | 2021-11-08 | Transposition error live-line defect eliminating tool for cross interconnection box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113937682A true CN113937682A (en) | 2022-01-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111315118.XA Pending CN113937682A (en) | 2021-11-08 | 2021-11-08 | Transposition error live-line defect eliminating tool for cross interconnection box |
Country Status (1)
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| CN (1) | CN113937682A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202749745U (en) * | 2012-08-30 | 2013-02-20 | 山东电力集团公司济南供电公司 | Special-purpose grounding lead wire for intersecting interconnection box maintenance |
| CN104113002A (en) * | 2014-06-18 | 2014-10-22 | 国家电网公司 | High-voltage cable cross interconnection grounding system transfer device |
| CN109473324A (en) * | 2018-10-31 | 2019-03-15 | 厦门安达兴电气集团有限公司 | Nonpolarity low-voltage circuit breaker |
| CN112018672A (en) * | 2020-09-16 | 2020-12-01 | 国网江西省电力有限公司南昌供电分公司 | Electrified repair method for cross-connection grounding system of power transmission cable |
-
2021
- 2021-11-08 CN CN202111315118.XA patent/CN113937682A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202749745U (en) * | 2012-08-30 | 2013-02-20 | 山东电力集团公司济南供电公司 | Special-purpose grounding lead wire for intersecting interconnection box maintenance |
| CN104113002A (en) * | 2014-06-18 | 2014-10-22 | 国家电网公司 | High-voltage cable cross interconnection grounding system transfer device |
| CN109473324A (en) * | 2018-10-31 | 2019-03-15 | 厦门安达兴电气集团有限公司 | Nonpolarity low-voltage circuit breaker |
| CN112018672A (en) * | 2020-09-16 | 2020-12-01 | 国网江西省电力有限公司南昌供电分公司 | Electrified repair method for cross-connection grounding system of power transmission cable |
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Application publication date: 20220114 |
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| RJ01 | Rejection of invention patent application after publication |