CN212255656U - Low-voltage low-current load wiring bypass device - Google Patents
Low-voltage low-current load wiring bypass device Download PDFInfo
- Publication number
- CN212255656U CN212255656U CN202020403412.0U CN202020403412U CN212255656U CN 212255656 U CN212255656 U CN 212255656U CN 202020403412 U CN202020403412 U CN 202020403412U CN 212255656 U CN212255656 U CN 212255656U
- Authority
- CN
- China
- Prior art keywords
- low
- electrically connected
- voltage
- bypass device
- current
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
Abstract
The utility model discloses a low-voltage low-current load wiring bypass device, which comprises 2 power connection terminals, 2 cables, a voltage measurement module, a current transformer and a first switch, wherein the input end of a power side terminal is electrically connected with a power side circuit, and the output end of the power side terminal is electrically connected with one end of the first cable; an input end of the load side terminal is electrically connected to the load side line, and an output end of the load side terminal is electrically connected to one end of the second cable; one end of the first switch is electrically connected with the other end of the first cable; the other end of the first cable is electrically connected with the acquisition positive end of the voltage measurement module; the acquisition negative end of the voltage measurement module is electrically connected with the other end of the first switch; the acquisition negative end of the voltage measurement module is electrically connected with the other end of the second cable; the other end of the second cable is electrically connected with the primary side of the current transformer; the secondary side of the current transformer is electrically connected with the acquisition positive end of the current measurement module; the acquisition negative end of the current measurement module is electrically connected with the zero line.
Description
Technical Field
The utility model relates to an electric power system equipment field, more specifically relates to a low pressure undercurrent load wiring bypass device.
Background
At present, in daily low-voltage line urgent repair and line transformation work, because the low-voltage wire that inserts does not have a power failure jumper wire wiring, can have current load during the operation. When the wiring is carried out with load, the problem that the electric arc hurts people is easily generated. With the rapid development of society, people put forward higher and higher requirements on power supply reliability, and the mode of adopting live working, bypass uninterrupted power operation and the like to overhaul the distribution network low-voltage line becomes the most direct and most effective important means for improving the power supply reliability and the high-quality service level.
SUMMERY OF THE UTILITY MODEL
The utility model overcomes the above-mentioned prior art is not enough, provides a low pressure undercurrent load wiring bypass device. Through the utility model, when in emergency repair and maintenance, the jumper wiring port operation of the low-voltage wire is carried out without power failure; the utility model can transfer the current to the rear section line of jumper wiring port operation, effectively prevent the electric arc generated by the loaded wiring from hurting people; the power failure client range is reduced, the condition that emergency repair needs to be further expanded in power failure operation is effectively prevented, the power supply reliability is improved, and the power supply increase and expansion is guaranteed.
In order to solve the technical problem, the technical scheme of the utility model as follows:
a low-voltage small-current load wiring bypass device comprises 2 electric terminals, 2 cables, a voltage measuring module, a current transformer and a first switch, wherein,
the 2 electric terminals are defined as a power side terminal and a load side terminal, and the 2 cables are defined as a first cable and a second cable;
the input end of the power supply side terminal is electrically connected with the non-zero phase line of the power supply side line, and the output end of the power supply side terminal is electrically connected with one end of the first cable;
the input end of the load side terminal is electrically connected with the non-zero phase line of the load side line, and the output end of the load side terminal is electrically connected with one end of the second cable;
the first switch has an arc extinguishing function, and one end of the first switch is electrically connected with the other end of the first cable;
the other end of the first cable is electrically connected with the acquisition positive end of the voltage measurement module;
the acquisition negative end of the voltage measurement module is electrically connected with the other end of the first switch;
the acquisition negative end of the voltage measurement module is electrically connected with the other end of the second cable;
the other end of the second cable is electrically connected with the primary side of the current transformer;
the secondary side of the current transformer is electrically connected with the acquisition positive end of the current measurement module;
and the acquisition negative end of the current measurement module is electrically connected with the zero line.
The utility model discloses a working process:
connecting a power source side terminal to a non-zero phase line (i.e., any one of a phase A, a phase B, and a phase C) of the power source side line; connecting a load side terminal to a non-zero phase line of the load side line (the load side terminal and a power side terminal are connected to the same phase line); judging whether voltage exists through a voltage measuring module, and if the voltage exists, judging that wiring is wrong; if no voltage exists, the condition that no wiring error exists can be judged; closing the first switch, and judging whether the current is within the allowable safe current (below 100A current) through the current measuring module; and if the current is within the safe current, carrying out the connection operation of the connection jumper wire port. And after the connection operation of the wiring jumper port is completed, disconnecting the first switch and removing the load side terminal and the power supply side terminal. And then carrying out the connection operation of the next phase conductor wiring jumper wire port according to the operation.
The utility model has the advantages that: when in rush repair and maintenance, the jumper wiring port of the low-voltage lead is operated without power failure; the utility model can transfer the current to the rear section line of jumper wiring port operation, effectively prevent the electric arc generated by the loaded wiring from hurting people; the power failure client range is reduced, the condition that emergency repair needs to be further expanded in power failure operation is effectively prevented, the power supply reliability is improved, and the power supply increase and expansion is guaranteed.
In a preferred scheme, the low-voltage low-current load wiring bypass device further comprises an alarm module, wherein one end of the alarm module is electrically connected with the other end of the first cable; the other end of the alarm module is electrically connected with the other end of the first switch.
In the preferred scheme, the alarm module can immediately alarm against the fault connection of the wires or the interphase short circuit before the first switch is closed.
In a preferred scheme, the low-voltage low-current load wiring bypass device further comprises a second switch, the second switch has a function of starting/stopping the current measuring module, and one end of the second switch is electrically connected with the other end of the first cable; the other end of the second switch is electrically connected with a power supply end of the current measuring module.
In this preferred scheme, the second switch can also prevent that the return circuit from causing alarm module false start.
In a preferred embodiment, the alarm module is an acoustic alarm module and/or an optical alarm module.
In a preferred embodiment, the low-voltage low-current load wiring bypass device further comprises a box body, and the box body plays a role in fixing.
In a preferred scheme, the low-voltage low-current load wiring bypass device further comprises a hook, the hook is arranged on the outer side of the box body and fixedly connected with the box body, and the hook is used for fixing the low-voltage low-current load wiring bypass device.
In a preferred scheme, the low-voltage low-current load wiring bypass device further comprises a microprocessor chip, and a first input end of the microprocessor chip is electrically connected with a data output end of the voltage measurement module; and the second input end of the micro-processing chip is electrically connected with the data output end of the current measuring module.
In a preferred embodiment, the low-voltage low-current load wiring bypass device further includes a display module, and the output terminal of the microprocessor chip is electrically connected to the input terminal of the display module.
Compared with the prior art, the utility model discloses technical scheme's beneficial effect is:
when in rush repair and maintenance, the jumper wiring port of the low-voltage lead is operated without power failure; the utility model can transfer the current to the rear section line of jumper wiring port operation, effectively prevent the electric arc generated by the loaded wiring from hurting people; the power failure client range is reduced, the condition that emergency repair needs to be further expanded in power failure operation is effectively prevented, the power supply reliability is improved, and the power supply increase and expansion is guaranteed.
Drawings
FIG. 1 is a structural connection diagram of an embodiment.
Detailed Description
The drawings are for illustrative purposes only and are not to be construed as limiting the patent;
for the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product;
it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
The technical solution of the present invention will be further explained with reference to the accompanying drawings and examples.
Example 1
As shown in fig. 1, a low-voltage small-current load wiring bypass device comprises 2 electric terminals, 2 cables, a voltage measuring module, a current transformer and a first switch, wherein,
2 electric terminals are defined as a power source side terminal and a load side terminal, and 2 cables are defined as a first cable and a second cable;
the input end of the power supply side terminal is electrically connected with the non-zero phase line of the power supply side line, and the output end of the power supply side terminal is electrically connected with one end of the first cable;
an input end of the load side terminal is electrically connected with the non-zero phase line of the load side line, and an output end of the load side terminal is electrically connected with one end of the second cable;
the first switch has an arc extinguishing function, and one end of the first switch is electrically connected with the other end of the first cable;
the other end of the first cable is electrically connected with the acquisition positive end of the voltage measurement module;
the acquisition negative end of the voltage measurement module is electrically connected with the other end of the first switch;
the acquisition negative end of the voltage measurement module is electrically connected with the other end of the second cable;
the other end of the second cable is electrically connected with the primary side of the current transformer;
the secondary side of the current transformer is electrically connected with the acquisition positive end of the current measurement module;
the acquisition negative end of the current measurement module is electrically connected with the zero line.
Working procedure of example 1:
connecting a power source side terminal to a non-zero phase line (i.e., any one of a phase A, a phase B, and a phase C) of the power source side line; connecting a load side terminal to a non-zero phase line of the load side line (the load side terminal and a power side terminal are connected to the same phase line); judging whether voltage exists through a voltage measuring module, and if the voltage exists, judging that wiring is wrong; if no voltage exists, the condition that no wiring error exists can be judged; closing the first switch, and judging whether the current is within the allowable safe current (below 100A current) through the current measuring module; and if the current is within the safe current, carrying out the connection operation of the connection jumper wire port. And after the connection operation of the wiring jumper port is completed, disconnecting the first switch and removing the load side terminal and the power supply side terminal. And then carrying out the connection operation of the next phase conductor wiring jumper wire port according to the operation.
Advantages of example 1: when in rush repair and maintenance, the jumper wiring port of the low-voltage lead is operated without power failure; the utility model can transfer the current to the rear section line of jumper wiring port operation, effectively prevent the electric arc generated by the loaded wiring from hurting people; the power failure client range is reduced, the condition that emergency repair needs to be further expanded in power failure operation is effectively prevented, the power supply reliability is improved, and the power supply increase and expansion is guaranteed.
In example 1, the following modifications can also be made: the low-voltage low-current load wiring bypass device further comprises an alarm module, wherein one end of the alarm module is electrically connected with the other end of the first cable; the other end of the alarm module is electrically connected with the other end of the first switch.
In the improved embodiment, the alarm module can immediately alarm against the fault wire or the interphase short circuit before the first switch is closed.
In example 1 and the modified examples, the following modifications may also be made: the low-voltage small-current load wiring bypass device also comprises a second switch, the second switch has the function of starting/closing the current measuring module, and one end of the second switch is electrically connected with the other end of the first cable; the other end of the second switch is electrically connected with a power supply end of the current measuring module.
In the improved embodiment, the second switch can also prevent the circuit from causing the false start of the alarm module.
In example 1 and the modified examples, the following modifications may also be made: the alarm module is an acoustic alarm module and/or an optical alarm module.
In example 1 and the modified examples, the following modifications may also be made: the low-voltage low-current load wiring bypass device further comprises a box body, and the box body plays a role in fixing.
In example 1 and the modified examples, the following modifications may also be made: the low-voltage low-current load wiring bypass device further comprises a hook, the hook is arranged on the outer side of the box body and fixedly connected with the box body, and the hook is used for fixing the low-voltage low-current load wiring bypass device.
In example 1 and the modified examples, the following modifications may also be made: the low-voltage low-current load wiring bypass device also comprises a micro-processing chip, wherein a first input end of the micro-processing chip is electrically connected with a data output end of the voltage measurement module; and the second input end of the micro-processing chip is electrically connected with the data output end of the current measuring module.
In example 1 and the modified examples, the following modifications may also be made: the low-voltage low-current load wiring bypass device further comprises a display module, and the output end of the micro-processing chip is electrically connected with the input end of the display module.
In the detailed description of the embodiments, various technical features may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The same or similar reference numerals correspond to the same or similar parts;
the terms describing positional relationships in the drawings are for illustrative purposes only and are not to be construed as limiting the patent;
it is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not limitations to the embodiments of the present invention. For example, the connection modes of the components in the embodiments are only examples, and other connection modes still belong to the protection scope of the patent, and the embodiments are not limited to the patent.
Other variations and modifications will be apparent to persons skilled in the art in light of the above description. 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)
1. A low-voltage small-current load wiring bypass device is characterized by comprising 2 electric terminals, 2 cables, a voltage measuring module, a current transformer and a first switch, wherein,
the 2 electric terminals are defined as a power side terminal and a load side terminal, and the 2 cables are defined as a first cable and a second cable;
the input end of the power supply side terminal is electrically connected with the non-zero phase line of the power supply side line, and the output end of the power supply side terminal is electrically connected with one end of the first cable;
the input end of the load side terminal is electrically connected with the load side line non-zero phase line, and the output end of the load side terminal is electrically connected with one end of the second cable;
the first switch has an arc extinguishing function, and one end of the first switch is electrically connected with the other end of the first cable;
the other end of the first cable is electrically connected with the acquisition positive end of the voltage measurement module;
the acquisition negative end of the voltage measurement module is electrically connected with the other end of the first switch;
the acquisition negative end of the voltage measurement module is electrically connected with the other end of the second cable;
the other end of the second cable is electrically connected with the primary side of the current transformer;
the secondary side of the current transformer is electrically connected with the acquisition positive end of the current measurement module;
and the acquisition negative end of the current measurement module is electrically connected with the zero line.
2. The low-voltage small-current load wiring bypass device according to claim 1, further comprising a second switch having a function of turning on/off the current measuring module, one end of the second switch being electrically connected to the other end of the first cable; the other end of the second switch is electrically connected with a power supply end of the current measuring module.
3. A low-voltage small-current load wiring bypass device according to claim 1 or 2, further comprising an alarm module having one end electrically connected to the other end of the first cable; the other end of the alarm module is electrically connected with the other end of the first switch.
4. The low voltage low current load wiring bypass device according to claim 3, wherein the alarm module is an acoustic alarm module and/or an optical alarm module.
5. A low-voltage low-current load wiring bypass device according to claim 1, 2 or 4, characterized in that said low-voltage low-current load wiring bypass device further comprises a case, said case serving as a fixing means.
6. The low voltage low current load wiring bypass device according to claim 3, wherein said low voltage low current load wiring bypass device further comprises a case, said case serving as a fixing means.
7. The low-voltage small-current load wiring bypass device as claimed in claim 5, further comprising a hook, wherein the hook is arranged outside the box body and is fixedly connected with the box body, and the hook is used for fixing the low-voltage small-current load wiring bypass device.
8. The low-voltage small-current load wiring bypass device as claimed in claim 6, further comprising a hook, wherein the hook is arranged outside the box body and is fixedly connected with the box body, and the hook is used for fixing the low-voltage small-current load wiring bypass device.
9. The low-voltage low-current load wiring bypass device according to claim 1, 2, 4, 6, 7 or 8, characterized in that the low-voltage low-current load wiring bypass device further comprises a microprocessor chip, a first input terminal of the microprocessor chip is electrically connected with a data output terminal of the voltage measurement module; and the second input end of the micro-processing chip is electrically connected with the data output end of the current measuring module.
10. The low-voltage low-current load wiring bypass device according to claim 9, wherein the low-voltage low-current load wiring bypass device further comprises a display module, and the output terminal of the microprocessor chip is electrically connected with the input terminal of the display module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020403412.0U CN212255656U (en) | 2020-03-25 | 2020-03-25 | Low-voltage low-current load wiring bypass device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020403412.0U CN212255656U (en) | 2020-03-25 | 2020-03-25 | Low-voltage low-current load wiring bypass device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212255656U true CN212255656U (en) | 2020-12-29 |
Family
ID=73986469
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020403412.0U Active CN212255656U (en) | 2020-03-25 | 2020-03-25 | Low-voltage low-current load wiring bypass device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212255656U (en) |
-
2020
- 2020-03-25 CN CN202020403412.0U patent/CN212255656U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6746250B2 (en) | Connection for a distribution network | |
| US9227517B2 (en) | Charging device having a bidirectional auxiliary power supply unit | |
| CN103943396B (en) | Circuit breaker operation loop | |
| CN212255656U (en) | Low-voltage low-current load wiring bypass device | |
| KR20190098663A (en) | Power supply system based on dc grid for ship with high-voltage generator and low-voltage dc main switchboard | |
| CN108181528B (en) | High-voltage cable differential protection checking system in no-load state | |
| EP4068548A1 (en) | Direct current power supply system, photovoltaic system, energy storage system, and optical storage system | |
| CN111342496A (en) | Micro-grid switching device and switching control method | |
| CN111257797A (en) | Low-voltage low-current load wiring bypass device and operation method thereof | |
| US7573153B2 (en) | Power supply apparatus for field devices | |
| CN108964248A (en) | Power system | |
| CN108110726A (en) | Ship-to-shore equipotential protective device | |
| CN112834869A (en) | Differential protection calibration system for large-length submarine cable in no-load state | |
| CN210669911U (en) | Voltage stabilizing circuit for high-frequency switching power supply and high-frequency switching power supply | |
| US6420850B1 (en) | Telecommunication power distribution systems and apparatuses and methods of supplying power to a telecommunication device | |
| CN218300919U (en) | Arc light protection device for power supply incoming line | |
| CN216390588U (en) | Double-direct-current system control circuit | |
| CN211764951U (en) | Motor control module power supply system, power supply system and automobile | |
| US20200028350A1 (en) | Dc overvoltage protection for an energy system | |
| CN220914786U (en) | Quick connector switching device and box transformer matched with quick connector of low-voltage cable | |
| CN219164244U (en) | Power grid protection circuit and generator set | |
| CN211295793U (en) | High-voltage box power supply system | |
| CN215835189U (en) | Electrical control cabinet used in pit | |
| CN218788085U (en) | Zero sequence voltage monitoring device | |
| CN218005865U (en) | Comprehensive emergency protection device for digital traction substation of high-speed heavy haul railway |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |