CN106997991A - The lug plate of ground connection before can tearing open - Google Patents
The lug plate of ground connection before can tearing open Download PDFInfo
- Publication number
- CN106997991A CN106997991A CN201710193573.4A CN201710193573A CN106997991A CN 106997991 A CN106997991 A CN 106997991A CN 201710193573 A CN201710193573 A CN 201710193573A CN 106997991 A CN106997991 A CN 106997991A
- Authority
- CN
- China
- Prior art keywords
- lug plate
- ground connection
- screw
- ground
- tearing open
- 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.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R11/00—Individual connecting elements providing two or more spaced connecting locations for conductive members which are, or may be, thereby interconnected, e.g. end pieces for wires or cables supported by the wire or cable and having means for facilitating electrical connection to some other wire, terminal, or conductive member, blocks of binding posts
- H01R11/11—End pieces or tapping pieces for wires, supported by the wire and for facilitating electrical connection to some other wire, terminal or conductive member
- H01R11/28—End pieces consisting of a ferrule or sleeve
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/28—Clamped connections, spring connections
- H01R4/30—Clamped connections, spring connections utilising a screw or nut clamping member
- H01R4/36—Conductive members located under tip of screw
Landscapes
- Connections Arranged To Contact A Plurality Of Conductors (AREA)
Abstract
The lug plate of ground connection belongs to power transmission and distribution project technical field before can tearing open.Screw is formed with the wiring hole of lug plate, when equipment is run, is covered with shield card.During overhaul of the equipments " three-phase shortcircuit ground connection " process, lug plate is pulled down again after ground wire branch line being first screwed in screw, realizes whole ground protection in turn(a)round, when eliminating the operation of progress " three-phase shortcircuit " work step, the hidden danger that incoming call is produced in violation of rules and regulations.It is used as power equipment terminal.
Description
Technical field
Power transmission and distribution project.
Background technology
It is existing《Electric power apparatus examination is grounded code》Defined operation sequence is：" power-off " → " electrical verification " → " three-phase shortcircuit
Ground connection ".The code is for " single supply is powered and powered according to code " without potential safety hazard.But for " social power network, providing for oneself
Just there is potential safety hazard in power supply double voltage control " and " though social power network single supply but power by maloperation ".Problem, which goes out, " to be tested
Electricity " is between " three-phase shortcircuit ground connection " within this short a few minutes.After " electrical verification ", people must pull down three incoming call inlet wire cables
Lug plate（It is commonly called as line nose）Could be by three's short circuit grounding.Note！From being pulled down first lug plate, to three lug plates
It is not have ground protection entirely during short circuit.If sent a telegram here in violation of rules and regulations during this, and because single-phase earthing will not trip, just make to connect
Shock by electricity for a long time in place.
Operation of power networks face dissipates a little louder is not met mutually, and the probability of " maloperation is sent a telegram here during regulation has a power failure " can not be excluded, pre- to exclude
There is no the hidden danger of ground protection, it is necessary to before three lug plates of three-phase conducting wire are pulled down in " three-phase shortcircuit ground connection " operating process
Just three ground strips should be in advance grounded.
The content of the invention
The ground strip technical problem to be solved of ground connection is before can tearing open：Pulling down the lug plate of three incoming call inlet wire cables
Before.Ground protection ground wire is first loaded onto on the ground strip.The technical scheme of use is：A screw is made on lug plate in advance.
The lug plate of ground connection before can tearing open（Accompanying drawing）It can first be grounded and remove afterwards.Unthreaded hole 1 is arranged at lug plate top, can be through and set
On standby binding post.There is screw 2 under unthreaded hole 1, when equipment is run, covered with shield card 6.During overhaul of the equipments, ground wire is filled with screw 4
Branch line.Plug wire cylinder 3 is arranged at lug plate bottom, to crimping lead wire.
The concrete operations work step of " three-phase shortcircuit ground connection process " is：1. must be before " electrical verification " work step, in advance ground connection
The earth terminal of line is securely attached on ground terminal, and properly guides ground wire into equipment end, when " three-phase shortcircuit " work step is operated, with
Hand can and part.So, after electrical verification, so that it may carry out the operation of " three-phase shortcircuit " work step immediately.2. must " power-off ", " test
Two work steps of electricity " are continuously finished.3. must be after " electrical verification " and confirming without electricity, immediately successively in the wiring of three incoming call inlet wire cables
In screw 2 on piece, ground wire branch line is loaded onto.4. the equipment end from three ground wire branch lines is carefully recognized to the earth terminal of ground rails
True dialled with screwdriver looks into each tie point, and confirmation is connected firmly errorless.5. grounded lug plate is pulled down in slave unit.So far " three
Phase short circuit grounding " work step, which is just calculated, safely and reliably to be completed.
The advantage of the lug plate of ground connection is before can tearing open：1. it is truly realized overall process ground protection in turn(a)round.2. disappear
Except carrying out during the operation of " three-phase shortcircuit " work step, the hidden danger that incoming call is produced in violation of rules and regulations.
Brief description of the drawings
Accompanying drawing 1, which shows, can tear the ground strip dimensional decomposition structure figure of preceding ground connection open.In figure：1-unthreaded hole；2-screw；3-insert
Spool；4-screw；5-open button；6-shield card；7-chock plug.
2 times at unthreaded hole 1 are thickeied at the screw 2 of lug plate, the major diameter of thread of screw 2 is equal with the diameter of unthreaded hole 1.Shield card 6
Insulating materials is made, and main body takes the shape of the letter U, and inside has chock plug 7, and when opening the operation of the equipment of button 5. outside, chock plug 7 is tightly filled in screw 2, blocks shield
6 cover lug plate；During overhaul of the equipments, clamp to open button 5 and extract to protect and block 6, expose screw 2, it is loaded onto ground wire branch line.
Claims (3)
- Removed afterwards 1. the lug plate of ground connection can be first grounded before can tearing open, it is characterized in that：Unthreaded hole is arranged at lug plate top（1）；Unthreaded hole（1） Under have shield block（6）The screw covered（2）；Wiring cylinder is arranged at lug plate bottom（3）.
- 2. according to claim 1 can tear the lug plate of preceding ground connection open, it is characterized in that：Screw（2）Place thickeies into unthreaded hole（1） 2 times of place；Screw（2）Major diameter of thread and unthreaded hole（1）Diameter is equal.
- 3. according to claim 1 can tear the lug plate of preceding ground connection open, it is characterized in that：Shield card（6）Insulating materials is made, main body Take the shape of the letter U, inside there is chock plug（7）, button is opened outside（5）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710193573.4A CN106997991A (en) | 2017-03-28 | 2017-03-28 | The lug plate of ground connection before can tearing open |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710193573.4A CN106997991A (en) | 2017-03-28 | 2017-03-28 | The lug plate of ground connection before can tearing open |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106997991A true CN106997991A (en) | 2017-08-01 |
Family
ID=59430978
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710193573.4A Pending CN106997991A (en) | 2017-03-28 | 2017-03-28 | The lug plate of ground connection before can tearing open |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106997991A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111262137A (en) * | 2020-03-16 | 2020-06-09 | 国网河南省电力公司南阳供电公司 | Uninterrupted multifunctional grounding device for switch cabinet cable dismounting |
| CN112421251A (en) * | 2020-11-03 | 2021-02-26 | 广东电网有限责任公司 | Low-voltage grounding connecting piece |
-
2017
- 2017-03-28 CN CN201710193573.4A patent/CN106997991A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111262137A (en) * | 2020-03-16 | 2020-06-09 | 国网河南省电力公司南阳供电公司 | Uninterrupted multifunctional grounding device for switch cabinet cable dismounting |
| CN112421251A (en) * | 2020-11-03 | 2021-02-26 | 广东电网有限责任公司 | Low-voltage grounding connecting piece |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170801 |