CN207603177U - A kind of grounding box of recordable discharge time and Leakage Current - Google Patents
A kind of grounding box of recordable discharge time and Leakage Current Download PDFInfo
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- CN207603177U CN207603177U CN201721621676.8U CN201721621676U CN207603177U CN 207603177 U CN207603177 U CN 207603177U CN 201721621676 U CN201721621676 U CN 201721621676U CN 207603177 U CN207603177 U CN 207603177U
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- leakage current
- discharge time
- grounding
- monitoring device
- recordable
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Abstract
The utility model discloses a kind of recordable discharge times and the grounding box of Leakage Current; including seal case; the incoming seal pipe for leading into earth cable is provided on the seal case, the sequentially connected binding clip for connecting earth cable, the sheath protector for limiting induced voltage and fault overvoltage on earth cable metal sheath, the grounding assembly for the monitoring device that records discharge time and Leakage Current and for monitoring device to be grounded are provided in the seal case；The earth cable is connect across incoming seal pipe with binding clip.The discharge time and leakage current of cable grounding system are recorded by succinct convenient monitoring device; it can check sheath protector discharge time and Leakage Current; improve cable run operation management; it realizes the management of cable grounding system operation data, running state real-time monitoring, improves the safe and reliable target of cable operation.Global design is simple, easy for installation, occupies little space.
Description
Technical field
The utility model is related to HV CABLE SYSTEM grounding technology field, particularly a kind of recordable discharge time and leakage
The grounding box of electric current.
Background technology
When the core of high pressure single earth cable passes through alternating current, alternating electric field, cable metal set are generated around it
On will generate induced potential.Therefore, earth cable line-to-ground, that is, earth cable protective metal shell reliable ground, is that effective guarantee connects
One of important safeguard measure of ground cable run safe operation.Earth fault or lightning surge are occurring for earth cable circuit
And under internal overvoltage state, need using the sheath protector in protective grounding case, by the electricity of cable run earthing position
It clamps down on the earthing potential of permission position.Sheath protector action frequency and service life are inversely proportional situation, existing grounding box
Sheath protector discharge time and leakage current can not be recorded, power grid maintenance personnel can not differentiate the use shape of sheath protector
State, once sheath protector fails, and the circulation directly contributed on Voltage Cable Lines Construction protective metal shell is excessive so as to cause cable
Protective metal shell generates heat, and accelerates cable insulation aging, eventually leads to the generation of cable run accident, brings very big safety hidden to power grid
Suffer from.
Utility model content
To solve the above problems, the purpose of this utility model is to provide a kind of recordable discharge time and leakage currents
Grounding box records the discharge time and Leakage Current of sheath protector, so as to judge the use state of sheath protector, prevent because
Sheath protector failure causes safety accident.
Technical solution is used by the invention for solving the technical problem：
The grounding box of a kind of recordable discharge time and Leakage Current including seal case, is set on the seal case
It is useful for leading to the incoming seal pipe into earth cable, be provided in the seal case sequentially connected for connecting earth cable
Binding clip, for limit induced voltage and fault overvoltage on earth cable metal sheath sheath protector, for remembering
Record the monitoring device of discharge time and Leakage Current and the grounding assembly for monitoring device to be grounded；The earth cable passes through
Incoming seal pipe is connect with binding clip.
Preferably, the binding clip is pressed from both sides for wiring copper, and the wiring copper folder is arranged with the insulation board for preventing electric leakage.
Further, the binding clip, sheath protector, monitoring device pass sequentially through connecting copper bar connection.
Further, the monitoring device include signal input module, for detect the current measurement module of Leakage Current, use
Electric discharge counting module in record sheath protector discharge time and the circuit protection mould for monitoring for protection device internal circuit
Block, the signal input module are connect simultaneously with current measurement module, electric discharge counting module and circuit protection module；The monitoring
Device further includes the visual window for checking sheath protector discharge time and Leakage Current, and the visual window is located at current measurement
Above module and electric discharge counting module.Sheath protector discharge time and Leakage Current can be checked by visual window.
Further, the monitoring device includes the monitoring grounding end of one or more.
Further, the grounding assembly is included for the earthing rod of grounding connection and for by the monitoring grounding of monitoring device
The bus-bar being electrically connected with earthing rod is held, the bus-bar is connected with earthing rod.
Further, the ground terminal of the current measurement module, electric discharge counting module and circuit protection module is filled with monitoring
The monitoring grounding end connection put, the monitoring grounding end of the monitoring device is connect with bus-bar.
The beneficial effects of the utility model are：A kind of recordable discharge time and leakage current that the utility model uses
Grounding box records sheath protector discharge time and Leakage Current using monitoring device, realizes cable grounding system operation data
Management, running state real-time monitoring improve the safe and reliable target of cable operation.
Description of the drawings
The utility model is described in further detail with example below in conjunction with the accompanying drawings.
Fig. 1 is the internal structure front view of the utility model；
Fig. 2 is the internal structure side view of the utility model；
Fig. 3 is the functional block diagram of the utility model.
Specific embodiment
With reference to Fig. 1-Fig. 3, a kind of recordable discharge time of the utility model and the grounding box of Leakage Current, including sealing
Babinet 1 is provided with the incoming seal pipe 2 for leading into earth cable on the seal case 1, is set in the seal case 1
Have it is sequentially connected for connect earth cable binding clip 4, for limit induced voltage on earth cable metal sheath and
The sheath protector 6 of fault overvoltage, for the monitoring device 7 that records discharge time and Leakage Current and for by monitoring device
The grounding assembly of ground connection；The earth cable passes through incoming seal pipe 2, and core is inserted into binding clip 4, will be grounded using bolt
The core of cable is fixed in binding clip 4, and binding clip 4 is further through connecting copper bar 5 and the ungrounded end 12 of sheath of sheath protector 6
Connection, wherein, connecting copper bar 5 is fixed by bolt, in order to good electric conductivity, the binding clip 4 in the present embodiment
It presss from both sides for wiring copper, leaks electricity in order to prevent, wiring copper folder is arranged with insulation board, and insulation board is epoxy insulating board 3 in the present embodiment；
The sheath ground terminal 13 of sheath protector 6 is connect by the end 11 ungrounded with the monitoring of monitoring device 7 of connecting copper bar 5.
Wherein, the monitoring device 7 includes signal input module 71, the current measurement module for detecting Leakage Current
72nd, it is filled for the electric discharge counting module 73 that records 6 discharge time of sheath protector and for monitoring for protection such as lightning protection or Anti-surgings
Put the circuit protection module 74 of 7 internal circuits, the signal input module 71 simultaneously with current measurement module 72, electric discharge count module
Block 73 and circuit protection module 74 connect；The monitoring device 7 further includes discharge time for checking sheath protector 6 with letting out
Reveal the visual window 14 of electric current, the visual window 14 is located at 73 top of current measurement module 72 and electric discharge counting module.By visual
Window 14 can check the discharge time and Leakage Current of sheath protector 6.
Wherein, the monitoring device 7 includes two monitoring grounding ends 8；The grounding assembly is included for grounding connection
Earthing rod 10 and the bus-bar 9 for the monitoring grounding end 8 of monitoring device 7 and earthing rod 10 to be electrically connected, the confluence
Row 9 is connected with earthing rod 10, and in the present embodiment, bus-bar 9 is confluence copper bar, and earthing rod 10 is epoxy earthing rod；Electric current is surveyed
The ground terminal of amount module 72, electric discharge counting module 73 and circuit protection module 74 is connect with the monitoring grounding end 8 of monitoring device,
The monitoring grounding end 8 of the monitoring device is connect with bus-bar 9.
Preferably, the current measurement module 72 in the present embodiment includes non linear metal oxide resistor and milliammeter,
The voltage of sheath protector 6 is obtained using non linear metal oxide resistor, electric current is converted to by milliammeter, milliammeter is color
Color scale marks off 6 leakage current values range of sheath protector, intuitively to judge the operating status of sheath protector 6.This
In embodiment, the colored criteria for classifying of 6 leakage current values range of sheath protector is：0-1.5mA is green area, and expression is remembered
Leakage current is recorded in the range of 6 running current of sheath protector, sheath protector 6 works normally；1.5-2.5mA is yellow
Region, expression record leakage current not in the range of sheath protection running current, earthed system and sheath need to be protected
Device 6 is checked and is monitored；More than 2.5mA is red area, and expression records leakage current and exceeded sheath protector 6 normally
Current margin, sheath protector 6 are likely to occur failure, need to overhaul or replace in time；
Wherein, the electric discharge counting module 73 includes three-position electromagnetic formula counter, when the earth cable metal coating of access
When induced voltage on layer is excessive, the conducting electric discharge of sheath protector 6, the non linear metal oxidation in current measurement module 72 at this time
Low resistance state and turning circuit is presented in object resistance, and three-position electromagnetic formula counter carries out cycle count, records discharge time.
Wherein, leakage current measurement and discharge time can directly observe acquisition by visual window 14, to safeguard
Personnel's preferably management service earth cable.
The preferred embodiment of the above, only the utility model, the utility model are not limited to above-mentioned implementation
Mode as long as it reaches the technique effect of the utility model with identical means, should all belong to the scope of protection of the utility model.
Claims (7)
1. a kind of grounding box of recordable discharge time and Leakage Current, it is characterised in that：It is described close including seal case (1)
The incoming seal pipe (2) for leading into earth cable is provided on joint sealing body (1), is provided with successively in the seal case (1)
Connection for connect earth cable binding clip (4), for limiting the induced voltage and failure on earth cable metal sheath
The sheath protector (6) of overvoltage, for the monitoring device (7) that records discharge time and Leakage Current and for by monitoring device
The grounding assembly of ground connection；The earth cable is connect across incoming seal pipe (2) with binding clip (4).
2. the grounding box of a kind of recordable discharge time according to claim 1 and Leakage Current, it is characterised in that：It is described
Binding clip (4) is pressed from both sides for wiring copper, and the wiring copper folder is arranged with the insulation board for preventing electric leakage.
3. the grounding box of a kind of recordable discharge time according to claim 1 and Leakage Current, it is characterised in that：It is described
Binding clip (4), sheath protector (6), monitoring device (7) pass sequentially through to be connected for conductive connecting copper bar (5).
4. the grounding box of a kind of recordable discharge time according to claim 1 and Leakage Current, it is characterised in that：It is described
Monitoring device (7) including signal input module (71), for detect the current measurement module of Leakage Current (72), for record protect
The electric discharge counting module (73) and the circuit protection for monitoring for protection device (7) internal circuit of layer protector (6) discharge time
Module (74), the signal input module (71) and meanwhile with current measurement module (72), electric discharge counting module (73) and circuit guarantor
Module (74) is protected to connect；The monitoring device (7) is further included for intuitive discharge time and the leakage for checking sheath protector (6)
The visual window (14) of electric current, the visual window (14) is above current measurement module (72) and electric discharge counting module (73).
5. the grounding box of a kind of recordable discharge time according to claim 4 and Leakage Current, it is characterised in that：It is described
Monitoring grounding end (8) of the monitoring device (7) including one or more.
6. the grounding box of a kind of recordable discharge time according to claim 5 and Leakage Current, it is characterised in that：It is described
Grounding assembly include for grounding connection earthing rod (10) and for by the monitoring grounding end (8) of monitoring device (7) with ground connection
The bus-bar (9) that column (10) is electrically connected, the bus-bar (9) are connected with earthing rod (10).
7. the grounding box of a kind of recordable discharge time according to claim 6 and Leakage Current, it is characterised in that：It is described
Current measurement module (72), electric discharge counting module (73) and circuit protection module (74) ground terminal with the monitoring of monitoring device
Ground terminal (8) connects, and the monitoring grounding end (8) of the monitoring device is connect with bus-bar (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721621676.8U CN207603177U (en) | 2017-11-28 | 2017-11-28 | A kind of grounding box of recordable discharge time and Leakage Current |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721621676.8U CN207603177U (en) | 2017-11-28 | 2017-11-28 | A kind of grounding box of recordable discharge time and Leakage Current |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207603177U true CN207603177U (en) | 2018-07-10 |
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ID=62761978
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721621676.8U Active CN207603177U (en) | 2017-11-28 | 2017-11-28 | A kind of grounding box of recordable discharge time and Leakage Current |
Country Status (1)
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| CN (1) | CN207603177U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112129992A (en) * | 2020-09-14 | 2020-12-25 | 重庆泰山电缆有限公司 | High tension cable grounding box inspection device |
| CN112730952A (en) * | 2020-12-29 | 2021-04-30 | 康威通信技术股份有限公司 | High tension cable sheath ground connection case detection device |
-
2017
- 2017-11-28 CN CN201721621676.8U patent/CN207603177U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112129992A (en) * | 2020-09-14 | 2020-12-25 | 重庆泰山电缆有限公司 | High tension cable grounding box inspection device |
| CN112730952A (en) * | 2020-12-29 | 2021-04-30 | 康威通信技术股份有限公司 | High tension cable sheath ground connection case detection device |
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