CN203811684U - Safe discharge device for cable insulation test - Google Patents
Safe discharge device for cable insulation test Download PDFInfo
- Publication number
- CN203811684U CN203811684U CN201420158436.9U CN201420158436U CN203811684U CN 203811684 U CN203811684 U CN 203811684U CN 201420158436 U CN201420158436 U CN 201420158436U CN 203811684 U CN203811684 U CN 203811684U
- Authority
- CN
- China
- Prior art keywords
- cable
- operation board
- discharge device
- metal wire
- resistance meter
- 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.)
- Expired - Lifetime
Links
- 238000009413 insulation Methods 0.000 title claims abstract description 28
- 238000012360 testing method Methods 0.000 title claims abstract description 14
- 239000004020 conductor Substances 0.000 claims abstract description 14
- 229910052751 metal Inorganic materials 0.000 claims abstract description 13
- 239000002184 metal Substances 0.000 claims abstract description 13
- 238000010586 diagram Methods 0.000 claims description 4
- 238000000034 method Methods 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 241000270722 Crocodylidae Species 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- LNNWVNGFPYWNQE-GMIGKAJZSA-N desomorphine Chemical compound C1C2=CC=C(O)C3=C2[C@]24CCN(C)[C@H]1[C@@H]2CCC[C@@H]4O3 LNNWVNGFPYWNQE-GMIGKAJZSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
Landscapes
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
Abstract
The utility model relates to a safe discharge device for a cable insulation test. The safe discharge device comprises an insulation resistance meter, metal wire clamps, a wire and an operation board. An L end and an E end of the insulation resistance meter are respectively connected to corresponding interfaces of the operation board. A pedaled discharge switch S and a control circuit are disposed on the operation board. A G interface of the operation board is connected to the two-phase wire. The end portions of the two-phase wire are equipped with the metal wire clamps respectively. The two metal wire clamps are clamped onto a cable conductor and a grounding pole. When the safe discharge device is in use, the cable conductor is firmly grounded, the discharge is safe, no ignition phenomenon occurs, the cable insulation test can be completed by one person, and the manpower is saved. Besides, the device is compact, portable, and low in cost.
Description
Technical field
The utility model belongs to power technology field, relates to cable insulation testing device, especially a kind of cable insulation test safety electric discharge device.
Background technology
The application of cable in urban power distribution network is increasingly extensive, when cable generation earth fault or phase-to phase fault, need to use the apparatus measures such as insulation resistance meter each relatively and alternate insulation resistance, thereby judge that shorted to earth has occurred mutually for which or phase fault has occurred which two-phase.Owing to having distributed capacitance between cable and the earth, so can charge to cable by the process of insulation resistance meter measurement insulating resistance of cable.If by cable grounding electric discharge, residual electric charge can make to form voltage difference between cable and the earth in cable not in time, threaten the safety of the person and equipment.
At present, cable discharge is general adopt by cable conductor directly and earthing pole touches, between cable conductor and earthing pole by methods such as foreign material overlap joint such as branches, there is following shortcoming:
When 1, cable insulation is better, the residual electric charge of cable is more, during ground connection, can produce the phenomenons such as electric discharge, sparking, may damage the equipment such as cable, earthing pole, even threatens personal safety;
2,, before cable discharge, insulation resistance meter can not stop operating, thus ground connection action need other people assisted, megger test process at least needs two people, has wasted manpower.
If use the special-purpose electric discharge device of similar converting equipment electrical test, have that volume is large, weight is large, carry inconvenience, wiring is complicated, high in cost of production shortcoming.
Utility model content
The purpose of this utility model is to overcome the weak point of original technology, provides a kind of ground connection firm, the cable insulation test safety electric discharge device that discharges safe, easy and simple to handle, easy to carry.
The technical scheme that the utility model technical solution problem adopts is:
A kind of cable insulation test safety electric discharge device, by insulation resistance meter, metal wire clamp, wire, operation board, formed, the L end of insulation resistance meter and E end be the corresponding interface of attended operation dish respectively, foot-operated discharge switch S and control circuit are installed on operation board, the G interface of operation board connects two phase conductors, a metal wire clamp is all installed in the end of this two phase conductor, and these two metal wire clamps are installed on cable conductor and earthing pole.
And the circuit connection diagram of described operation board is: L end and the E end of insulation resistance meter connect foot-operated discharge switch by discharge resistance R1, R2 respectively, the G interface of this foot-operated discharge switch attended operation dish.
Advantage of the present utility model and good effect are:
When this device is used, cable conductor ground connection is firm, and electric discharge safety, there will not be spark phenomenon, and cable insulation test can be completed by a people, has saved manpower, and installs small and exquisitely, easy to carry, and installation cost is cheap.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the schematic diagram of the utility model operation board inner control circuit.
Embodiment:
For further understanding content of the present utility model, Characteristic, hereby exemplify following examples, and coordinate accompanying drawing to be described in detail as follows.It should be noted that, the present embodiment is descriptive, is not determinate, can not limit thus protection domain of the present utility model.
A kind of cable insulation test safety electric discharge device, by insulation resistance meter 4, metal wire clamp 2, wire 3, operation board 5, formed, the L end of insulation resistance meter and E end be the corresponding interface of attended operation dish respectively, foot-operated discharge switch S and control circuit are installed on operation board, the G interface of operation board connects two phase conductors, a metal wire clamp is all installed in the end of this two phase conductor, and these two metal wire clamps are installed on cable conductor and earthing pole 1.
The present embodiment has also provided the circuit connection diagram of operation board in Fig. 2, and L end and the E end of insulation resistance meter connect foot-operated discharge switch by discharge resistance R1, R2 respectively, the G interface of this foot-operated discharge switch attended operation dish.
In the present embodiment, described metal wire clamp adopts Crocodile type wire clamp; Wire adopts good multiply copper, the aluminium flexible cord of electric conductivity; Discharge resistance adopts cement resistor; Foot-operated self-lock switch is circular machinery formula self-lock switch, and switch is closed, opening can be by having ridden.
Claims (2)
1. a cable insulation test safety electric discharge device, it is characterized in that: by insulation resistance meter, metal wire clamp, wire, operation board, formed, the L end of insulation resistance meter and E end be the corresponding interface of attended operation dish respectively, foot-operated discharge switch S and control circuit are installed on operation board, the G interface of operation board connects two phase conductors, a metal wire clamp is all installed in the end of this two phase conductor, and these two metal wire clamps are installed on cable conductor and earthing pole.
2. cable insulation test safety electric discharge device according to claim 1, it is characterized in that: the circuit connection diagram of described operation board is: L end and the E end of insulation resistance meter connect foot-operated discharge switch by discharge resistance R1, R2 respectively, the G interface of this foot-operated discharge switch attended operation dish.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420158436.9U CN203811684U (en) | 2014-04-02 | 2014-04-02 | Safe discharge device for cable insulation test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420158436.9U CN203811684U (en) | 2014-04-02 | 2014-04-02 | Safe discharge device for cable insulation test |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203811684U true CN203811684U (en) | 2014-09-03 |
Family
ID=51450417
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420158436.9U Expired - Lifetime CN203811684U (en) | 2014-04-02 | 2014-04-02 | Safe discharge device for cable insulation test |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203811684U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106124811A (en) * | 2016-07-28 | 2016-11-16 | 国网辽宁省电力有限公司丹东供电公司 | High-voltage electrical apparatus automatic discharging protection device |
-
2014
- 2014-04-02 CN CN201420158436.9U patent/CN203811684U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106124811A (en) * | 2016-07-28 | 2016-11-16 | 国网辽宁省电力有限公司丹东供电公司 | High-voltage electrical apparatus automatic discharging protection device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP02 | Change in the address of a patent holder |
Address after: 300010 Tianjin city Hebei District Wujing Road No. 39 Patentee after: State Grid Corporation of China Patentee after: STATE GRID TIANJIN ELECTRIC POWER Co. Address before: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Patentee before: State Grid Corporation of China Patentee before: STATE GRID TIANJIN ELECTRIC POWER Co. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20140903 |
|
| CX01 | Expiry of patent term |