CN202351368U - DC (direct current) ground connection testing device - Google Patents
DC (direct current) ground connection testing device Download PDFInfo
- Publication number
- CN202351368U CN202351368U CN2011205126718U CN201120512671U CN202351368U CN 202351368 U CN202351368 U CN 202351368U CN 2011205126718 U CN2011205126718 U CN 2011205126718U CN 201120512671 U CN201120512671 U CN 201120512671U CN 202351368 U CN202351368 U CN 202351368U
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- China
- Prior art keywords
- ground connection
- testing device
- branch
- connection testing
- detection module
- 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 - Fee Related
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- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
Abstract
The utility model relates to a DC (direct current) ground connection testing device, and adopts the technical scheme as follows: the DC ground connection testing device includes a DC system, branches and branch switches, wherein the DC system is connected with multiple branches through multiple branch switches. The DC ground connection testing device is characterized by further including a testing circuit formed by a detection module, detection switches and a universal meter, wherein the detection module is connected to ground points of the branches through multiple detection switches, and the universal meter is connected onto the last branch. The DC ground connection testing device has the benefits that the manufacture cost is low, the operation and maintenance are convenient, the detection is fast and safe, the DC is prevented from power loss, and the working efficiency and power supply reliability are greatly improved.
Description
Technical field:
The utility model relates to a kind of DC earthing pick-up unit, particularly a kind of DC earthing proving installation.
Background technology:
The transforming plant DC power-supply system is made up of DC equipments such as battery pack and charging equipment, direct current cabinet, DC feedback networks, when earth point occurring in the straight-flow system loop, can make the earthing pole voltage-to-ground reduce; Existing method of testing is an open line method: just successively, respectively, each dc feeder is confirmed earth point place feeder assembly in the short-time switching-off straight-flow system, at present, is under an embargo the use open line method because break feeder assembly fully in short-term.Another kind method is a high frequency DC earthing proving installation: under the low situation of D.C. isolation, accuracy rate is extremely low, can't detect during multipoint earthing.
Summary of the invention:
The purpose of the utility model is exactly the above-mentioned defective that exists to prior art, and a kind of DC earthing proving installation is provided.
Its technical scheme is: comprise straight-flow system, branch road, branch switch; Described straight-flow system connects a plurality of branch roads through a plurality of branch switchs; It is characterized in that: also comprise detection module, detector switch, multimeter composition test loop; Described detection module is connected to the earth point of each branch road respectively through a plurality of detector switches, in the end connect multimeter on a branch road.
The beneficial effect of the utility model is: cost of manufacture is low, and operating maintenance is convenient, detects fast and safely, and guarantees not dead electricity of direct current, has improved the reliability of work efficiency and power supply greatly.
Description of drawings:
Accompanying drawing 1 is the structural representation of the utility model.
Embodiment:
In conjunction with accompanying drawing 1, the utility model is done further to describe:
The utility model mainly by straight-flow system, branch road (1-n), branch switch (ZK1, ZK2, ZK3, ZKn), detection module, detector switch (SK1, SK2, SK3), multimeter form; Described straight-flow system connects a plurality of branch roads (1-n) through a plurality of branch switchs (ZK1, ZK2, ZK3, ZKn); Also comprise detection module, detector switch (SK1, SK2, SK3), multimeter composition test loop; Described detection module is connected to the earth point of each branch road respectively through a plurality of detector switches (SK1, SK2, SK3), in the end connect multimeter on a branch road.
When DC earthing takes place, at first on the branch road 1 of straight-flow system and connect direct current output of detection module, break off ZK1; Be that branch road provides direct supply temporarily by detection module, this moment check the branch road test voltage, if voltage be+l 10V and-110V; Prove that then there is earth point in branch road 1; Otherwise explain that then branch road 1 is normal, search downwards successively then, use the same method and continue to search device that branch road connects and the loop in the device.Like this, the staff is had only under the cover straight-flow system situation in transformer station still can continue to search the DC earthing point, and guarantee not dead electricity of direct current, improve the reliability of work efficiency and power supply greatly.
Claims (1)
1. DC earthing proving installation; Comprise straight-flow system, branch road, branch switch; Described straight-flow system connects a plurality of branch roads through a plurality of branch switchs; It is characterized in that: also comprise detection module, detector switch, multimeter composition test loop, described detection module is connected to the earth point of each branch road respectively through a plurality of detector switches, in the end connect multimeter on a branch road.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205126718U CN202351368U (en) | 2011-12-12 | 2011-12-12 | DC (direct current) ground connection testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205126718U CN202351368U (en) | 2011-12-12 | 2011-12-12 | DC (direct current) ground connection testing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202351368U true CN202351368U (en) | 2012-07-25 |
Family
ID=46540364
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205126718U Expired - Fee Related CN202351368U (en) | 2011-12-12 | 2011-12-12 | DC (direct current) ground connection testing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202351368U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110542829A (en) * | 2019-08-15 | 2019-12-06 | 贵州电网有限责任公司 | direct-current grounding judgment device and method for power distribution network below 35kV |
-
2011
- 2011-12-12 CN CN2011205126718U patent/CN202351368U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110542829A (en) * | 2019-08-15 | 2019-12-06 | 贵州电网有限责任公司 | direct-current grounding judgment device and method for power distribution network below 35kV |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120725 Termination date: 20141212 |
|
| EXPY | Termination of patent right or utility model |