CN208092095U - Electrical test neutral point gap earth protective device special isolation cover - Google Patents
Electrical test neutral point gap earth protective device special isolation cover Download PDFInfo
- Publication number
- CN208092095U CN208092095U CN201820523164.6U CN201820523164U CN208092095U CN 208092095 U CN208092095 U CN 208092095U CN 201820523164 U CN201820523164 U CN 201820523164U CN 208092095 U CN208092095 U CN 208092095U
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- Prior art keywords
- rotating cylinder
- insulating sleeve
- insulating
- drum shaft
- neutral point
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- Withdrawn - After Issue
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- 238000012360 testing method Methods 0.000 title claims abstract description 35
- 230000007935 neutral effect Effects 0.000 title claims abstract description 30
- 230000001681 protective effect Effects 0.000 title claims abstract description 26
- 238000002955 isolation Methods 0.000 title claims abstract description 18
- 230000000694 effects Effects 0.000 claims abstract description 15
- 239000011810 insulating material Substances 0.000 claims description 3
- 238000009434 installation Methods 0.000 description 9
- 238000009413 insulation Methods 0.000 description 8
- 238000002474 experimental method Methods 0.000 description 5
- 238000013461 design Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000007812 deficiency Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
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- Testing Relating To Insulation (AREA)
Abstract
A kind of electrical test neutral point gap earth protective device special isolation cover includes by the assembled square insulating pipe of bottom case and head cover, and bottom case is equipped with through-hole；Rotating cylinder upper end closed, rotating cylinder top surface is by rotating drum shaft on head cover, rotating cylinder lower end outer wall is equipped with locating ring, through-hole wall is equipped with locating slot, locating ring is stuck in locating slot, it is spaced apart on the side wall of rotating cylinder upper end there are two connecting rod holding tank, the first rotating drum shaft and the second rotating drum shaft is respectively equipped in two connecting rod holding tanks, rotating cylinder lower end inner wall is equipped with internal thread；First insulating sleeve and the second insulating sleeve are actively plugged in the both ends of square insulating pipe, the both ends of head rod are movably connected with the first insulating sleeve inner end and the first rotating drum shaft respectively, and the both ends of the second connecting rod are movably connected with the second insulating sleeve inner end and the second rotating drum shaft respectively；First insulating sleeve outer end is equipped with metallic conduction piece, and activity is equipped with third insulating sleeve in the second insulating sleeve outer end.Suitable for electrical test.
Description
Technical field
The utility model is related to a kind of insulating boots, are protected and are filled with neutral point gap ground more particularly to a kind of electrical test
Set special isolation cover.
Background technology
Currently, the power transformer of 110kV and above generally uses graded insulation, close to the ground of neutral point
The square class of insulation is relatively low.Overvoltage destroys neutral point insulation when neutral point is not directly grounded operation in order to prevent, in transformer
Property point can install the arrester for protecting neutral point from Lightning Over-voltage and the neutral point gap from switching overvoltage connects
Ground protective device.
Above-mentioned neutral point gap earth protective device is generally made of two conducting rods, and a conducting rod is mounted on insulated column
On, it is connected with earth point；Another conducting rod is mounted on transformer neutral point arrester.Two conducting rods are in straight line
On, it is intermediate that there are the portable protective gaps distances of relevant voltage grade.When carrying out Leakage Current experiment to neutral point MOA, due to
The DirectCurrent Voltage Ratio portable protective gaps withstanding voltage of application is much bigger, and insulation is installed additional between two conducting rods so generally requiring
Cover, to improve portable protective gaps withstanding voltage.
But in actual tests, due to there is no special isolation cover, so generally filled with managing security tools and instruments such as insulated shoes temporarily
Work as insulating boot, in this way, experiment preparation is extremely lack of standardization, interim insulating boot is very easy to fall off；Simultaneously as neutral point gap
The installation site of earth protective device is higher, so being required for high altitude vehicle cooperation that could install insulating boot additional every time, wastes a large amount of
Time, and reduce test efficiency；Moreover, because the gap between two conducting rods of neutral point gap earth protective device
Size can be different according to the difference of experiment, so existing interim insulating boot can not be applicable in completely.
Invention content
The purpose of this utility model is to overcome the deficiencies of above-mentioned background technology, provide a kind of electrical test neutral point
Gap earth protective device special isolation cover.
In order to achieve the goal above, a kind of electrical test neutral point gap earth protective device provided by the utility model
Special isolation cover, including square insulating pipe, rotating cylinder, the first insulating sleeve, the second insulating sleeve, head rod and the second connection
Bar, wherein
The square insulating pipe includes the bottom case and head cover of U-shaped structure, and the head cover is installed on the bottom case, the bottom case
Bottom surface in the middle part of be equipped with through-hole for installing the rotating cylinder；
The upper end closed of the rotating cylinder, the rotating cylinder are inserted into the through-hole, and the top surface of the rotating cylinder passes through rotating cylinder
Axis can be mounted on the inner surface of the head cover to rotation, and the position that the through-hole is corresponded on the lower end outer wall of the rotating cylinder is equipped with
Locating ring, is along the circumferential direction equipped on the inner wall of the through-hole and the matched locating slot of the locating ring, the locating ring card
In the locating slot, the upper end side wall upper edge circumferencial direction of the rotating cylinder, which is spaced apart, sets that there are two connecting rod holding tank, institutes
The first rotating drum shaft and the second rotating drum shaft for being respectively equipped in two connecting rod holding tanks and arranging vertically are stated, in the lower end of the rotating cylinder
Wall is equipped with the internal thread that can be mounted on insulating bar；
First insulating sleeve is actively plugged in one end of the square insulating pipe, and the second insulating sleeve activity is inserted
In the other end of the square insulating pipe, the inner end activity phase of one end of the head rod and first insulating sleeve
Even, the other end of the head rod is movably arranged on first rotating drum shaft, one end of second connecting rod and institute
The inner end for stating the second insulating sleeve is movably connected, and the other end of second connecting rod is movably arranged on second rotating drum shaft
On；
The outer end of first insulating sleeve is equipped with metallic conduction piece, and activity is slotting in the outer end of second insulating sleeve
Equipped with third insulating sleeve.
By the way that two insulating sleeves are actively plugged in respectively in the both ends of a square insulating pipe, and in the square insulating pipe
Middle part adds rotating cylinder free to rotate, connects two insulating sleeves with rotating cylinder activity respectively finally by two connecting rods
Connect, so as to drive insulating sleeve to be slided in square insulating pipe by rotating rotating cylinder, and then can realize insulating boot length from
By adjusting, to adapt to different gap sizes between two conducting rods；Simultaneously as the metallic conduction piece and the third are exhausted
The internal diameter of edge casing is matched with the outer diameter of conducting rod, so the both ends of this insulating boot can be set in two conducting rods
On, this sample insulating boot is not easy to fall off；Finally, due to which rotating cylinder can be directly mounted on insulating bar, so this insulating boot
Directly it can be installed and be adjusted by insulating bar, to greatly increase test efficiency.
In the above scheme, the inner end of first insulating sleeve passes through first sleeve shaft and the head rod
End is movably connected, and the inner end of second insulating sleeve passes through the activity of the end of the second casing shaft and second connecting rod
It is connected.
In the above scheme, the both ends of the head rod are respectively equipped with the first notch, and the two of the head rod
End active card is distinguished in the first sleeve shaft and first rotating drum shaft by first notch.Notch design side
Connecting rod installation and the later stage replacement.
In the above scheme, the both ends of second connecting rod are respectively equipped with the second notch, and the two of second connecting rod
End active card is distinguished in the second casing shaft and second rotating drum shaft by second notch.
In the above scheme, the metallic conduction piece is square ring structure, and the metallic conduction piece is coaxially installed on described the
In the outer end of one insulating sleeve, the metallic conduction on piece is installed with terminal plate in an axial direction.By being added in metallic conduction on piece
Terminal plate is so that it is convenient to test connection.
In the above scheme, the terminal plate is installed on the bottom of the metallic conduction piece, and the terminal plate connects
Wiring tooth is equipped in the upper and lower surface of line end.It is further in this way by the way that terminal plate to be installed on the bottom of metallic conduction piece
Ground facilitates wiring；Meanwhile by adding wiring tooth in the upper and lower surface of the terminals of terminal plate, can effectively prevent in this way
Only wiring falls off.
In the above scheme, the rotating drum shaft is bolt, and the end face center position of the rotating cylinder is equipped with and the bolt phase
The screw portion of the mounting hole of cooperation, the bolt is inverted across the mounting hole and is fixedly mounted on the inner surface of the head cover
Upper corresponding position, the rotating cylinder can rotation movable hanging in the screw head of the bolt.By the way that rotating drum shaft is designed as spiral shell
Bolt so that it is convenient to the installation of rotating drum shaft and later stage replace.
In the above scheme, outer diameter phase of the internal diameter of the metallic conduction piece and the third insulating sleeve with conducting rod
Coordinate, the guiding conical surface being inserted into convenient for the insulating bar is equipped at the inner wall lower port of the rotating cylinder.By in rotating cylinder
It is added at inner wall lower port and is oriented to the conical surface so that it is convenient to which this insulating boot is mounted on insulating bar.
In the above scheme, after the rotating cylinder is installed in place, the lower end of the rotating cylinder extends downwardly out length L, the length
Degree L is at least 10mm.By the way that the lower end of rotating cylinder is extended downwardly out length L, such testing crew can pinch rotating cylinder with receipts, in turn
Facilitate and rotating cylinder is mounted on insulating bar.
In the above scheme, the rotating cylinder, the head rod and second connecting rod are made of insulating materials.
The advantageous effect that the technical solution of the utility model is brought is：
1, by the way that two insulating sleeves are actively plugged in respectively in the both ends of a square insulating pipe, and in the square insulating pipe
Middle part add rotating cylinder free to rotate, finally by two connecting rods by two insulating sleeves respectively with rotating cylinder activity connect
Connect, so as to drive insulating sleeve to be slided in square insulating pipe by rotating rotating cylinder, and then can realize insulating boot length from
By adjusting, to adapt to different gap sizes between two conducting rods；
2, due to being matched with the outer diameter of conducting rod due to the internal diameter of the metallic conduction piece and the third insulating sleeve
It closes, so the both ends of this insulating boot can be set on two conducting rods, this sample insulating boot is not easy to fall off；
3, since rotating cylinder can be directly mounted on insulating bar, so this insulating boot can directly be pacified by insulating bar
Dress and adjustment, to greatly increase test efficiency；
4, notch design facilitates the installation of connecting rod and the replacement in later stage；
5, by adding terminal plate so that it is convenient to test connection in metallic conduction on piece；
6, by the way that terminal plate to be installed on the bottom of metallic conduction piece, wiring is further facilitated in this way；
7, by adding wiring tooth in the upper and lower surface of the terminals of terminal plate, it is de- that it can be effectively prevented wiring in this way
It falls；
8, by the way that rotating drum shaft is designed as bolt so that it is convenient to which the installation of rotating drum shaft and later stage are replaced；
9, the conical surface is oriented to so that it is convenient to which this insulating boot is mounted on insulation behaviour by being added at the inner wall lower port of rotating cylinder
Make on bar；
10, by the way that the lower end of rotating cylinder is extended downwardly out length L, such testing crew can pinch rotating cylinder, Jin Erfang with receipts
Just rotating cylinder is mounted on insulating bar.
Description of the drawings
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is that this insulating boot retracts and removes the cross-sectional view of the line A-A along Fig. 1 after terminal plate；
Fig. 3 is the structural schematic diagram of rotating cylinder；
Fig. 4 is the structural schematic diagram of connecting rod.
In figure：Square insulating pipe 1, bottom case 1a, head cover 1b, through-hole 1c, locating slot 1d, rotating cylinder 2, locating ring 2a, connecting rod are held
It receives slot 2b, the first rotating drum shaft 2c, the second rotating drum shaft 2d, internal thread 2e, is oriented to conical surface 2f, the first insulating sleeve 3, first sleeve turns
Axis 3a, the second insulating sleeve 4, the second casing shaft 4a, head rod 5, the first notch 5a, the second connecting rod 6, the second notch
6a, rotating drum shaft 7, metallic conduction piece 8, third insulating sleeve 9, terminal plate 10.
Specific implementation mode
The utility model is described in further detail with reference to the accompanying drawings and embodiments, but the embodiment should not be understood
For limitations of the present invention.
Embodiment：
Present embodiments provide a kind of electrical test neutral point gap earth protective device special isolation cover, including insulation
Square tube 1, rotating cylinder 2, the first insulating sleeve 3, the second insulating sleeve 4, head rod 5 and the second connecting rod 6, wherein described exhausted
The bottom case 1a of edge square tube 1 including U-shaped structure and head cover 1b, the head cover 1b are installed on the bottom case 1a, the bottom case 1a's
The through-hole 1c for installing the rotating cylinder 2 is equipped in the middle part of bottom surface；
The upper end closed of the rotating cylinder 2, the rotating cylinder 2 is inserted into the through-hole 1c, and the top surface of the rotating cylinder 2 passes through
Rotating drum shaft 7 can be mounted on the inner surface of the head cover 1b to rotation, and the through-hole 1c is corresponded on the lower end outer wall of the rotating cylinder 2
Position be equipped with locating ring 2a, be along the circumferential direction equipped on the inner wall of the through-hole 1c and the matched positioning of locating ring 2a
Slot 1d, the locating ring 2a are installed in the locating slot 1d, and the upper end side wall upper edge circumferencial direction interval of the rotating cylinder 2 opens up
There are two be respectively equipped in connecting rod holding tank 2b, described two connecting rod holding tank 2b the first rotating drum shaft 2c arranged vertically and
Second rotating drum shaft 2d, the lower end inner wall of the rotating cylinder 2 are equipped with the internal thread 2e that can be mounted on insulating bar；Described first
Rotating drum shaft 2c and the second rotating drum shaft 2d be arranged in the rotating cylinder 2 it is same diametrically；
First insulating sleeve 3 is actively plugged in one end of the square insulating pipe 1, and second insulating sleeve 4 is lived
Dynamic to be inserted into the other end of the square insulating pipe 1, one end of the head rod 5 is interior with first insulating sleeve 3
End is movably connected, and the other end of the head rod 5 is movably arranged on the first rotating drum shaft 2c, second connecting rod
6 one end and the inner end of second insulating sleeve 4 are movably connected, and the other end of second connecting rod 6 is movably arranged on institute
It states on the second rotating drum shaft 2d；The outer end of first insulating sleeve 3 is equipped with metallic conduction piece 8, second insulating sleeve 4
Activity is fitted with third insulating sleeve 9 in outer end.
By the way that two insulating sleeves are actively plugged in respectively in the both ends of a square insulating pipe, and in the square insulating pipe
Middle part adds rotating cylinder free to rotate, connects two insulating sleeves with rotating cylinder activity respectively finally by two connecting rods
Connect, so as to drive insulating sleeve to be slided in square insulating pipe by rotating rotating cylinder, and then can realize insulating boot length from
By adjusting, to adapt to different gap sizes between two conducting rods；Simultaneously as the metallic conduction piece 8 and the third
The internal diameter of insulating sleeve 9 is matched with the outer diameter of conducting rod, so the both ends of this insulating boot can be set in two conductions
On bar, this sample insulating boot is not easy to fall off；Finally, due to which rotating cylinder 2 can be directly mounted on insulating bar, so this insulation
Cover directly can be installed and be adjusted by insulating bar, to greatly increase test efficiency.
The inner end of above-mentioned first insulating sleeve 3 passes through the activity of the end of first sleeve shaft 3a and the head rod 5
It is connected, the end activity phase that the inner end of second insulating sleeve 4 passes through the second casing shaft 4a and second connecting rod 6
Even.The both ends of the head rod 5 are respectively equipped with the first notch 5a, and the both ends of the head rod 5 pass through described first
Notch 5a difference active cards are on the first sleeve shaft 3a and the first rotating drum shaft 2c.Second connecting rod 6
Both ends are respectively equipped with the second notch 6a, and the both ends of second connecting rod 6 are distinguished active card by the second notch 6a and are mounted in
On the second casing shaft 4a and the second rotating drum shaft 2d.Notch design facilitates installing with the later stage more for connecting rod
It changes.
Above-mentioned metallic conduction piece 8 is square ring structure, and the metallic conduction piece 8 is coaxially installed on first insulating sleeve 3
Outer end in, be installed with terminal plate 10 in an axial direction on the metallic conduction piece 8.By adding terminal plate on metallic conduction piece 8
10 so that it is convenient to test connection.The terminal plate 10 is installed on the bottom of the metallic conduction piece 8, and the terminal plate
Wiring tooth is equipped in the upper and lower surface of 10 terminals.By the way that terminal plate 10 is installed on the bottom of metallic conduction piece 8, this
Sample further facilitates wiring；Meanwhile by adding wiring tooth in the upper and lower surface of the terminals of terminal plate 10, in this way
Wiring can be effectively prevented to fall off.
Above-mentioned rotating drum shaft 7 is bolt, and the end face center position of the rotating cylinder 2 is equipped with and the matched installation of the bolt
The screw portion in hole, the bolt is inverted across the mounting hole and is fixedly mounted on corresponding on the inner surface of the head cover 1b
Position, the rotating cylinder 2 can rotation movable hanging mounted in the bolt screw head on.By the way that rotating drum shaft 7 is designed as bolt, in this way
The installation and later stage for facilitating rotating drum shaft 7 are replaced.
The internal diameter of above-mentioned metallic conduction piece 8 and the third insulating sleeve 9 is matched with the outer diameter of conducting rod, by institute
State that metallic conduction piece 8 is square ring structure and the third insulating sleeve 9 is rhs-structure, so the metallic conduction piece 8 and institute
The internal diameter for stating third insulating sleeve 9 refers both to cross section inner wall width or length herein, is equipped at the inner wall lower port of the rotating cylinder 2
The guiding conical surface 2f being inserted into convenient for the insulating bar.It is oriented to conical surface 2f by being added at the inner wall lower port of rotating cylinder 2, this
This insulating boot is just mounted on insulating bar by sample prescription.After the rotating cylinder 2 is installed in place, the lower end of the rotating cylinder 2 is to downward
Extension elongation L, the length L are at least 10mm.By the way that the lower end of rotating cylinder 2 is extended downwardly out length L, such testing crew can
Rotating cylinder 2 is pinched with receipts, and then facilitates and rotating cylinder 2 is mounted on insulating bar.The rotating cylinder 2, the head rod 5 and institute
The second connecting rod 6 is stated to be made of insulating materials.
This insulating boot use process is as follows：
When testing crew carries out the experiment of neutral point MOA Leakage Current, DC generator pressurized line must be installed to lightning-arrest
On the conducting rod of device side.Such as this insulating boot is used to carry out test of lightning arrester, first, according to the experiment need of neutral point voltage grade
It asks, adjusts the position of the first insulating sleeve 3 and the second insulating sleeve 4 by rotating rotating cylinder 2, and coordinate adjustment third insulating sleeve
9 position makes the entire length of this insulating boot be slightly less than portable protective gaps distance, pressurization wire clamp is clipped on terminal plate 10, and handle
This insulating boot is mounted on insulating bar top.
Then this insulating boot is moved at neutral point gap earth protective device by insulating bar, and makes arrester
The conducting rod of side is inserted into the first insulating sleeve 3, and being rotated further by insulating bar makes this insulating boot extend, at this point, third insulation sleeve
Pipe 9 has just been sleeved on the conducting rod of ground side, entire insulating boot be equivalent to be stuck in portable protective gaps both sides conducting rod it
Between, meanwhile, pressurized line is also connected with arrester side conducting rod, completes test connection, simple to operate and efficient.
The present embodiment by the way that two insulating sleeves are actively plugged in respectively in the both ends of a square insulating pipe, and this absolutely
Rotating cylinder free to rotate is added in the middle part of edge square tube, finally by two connecting rods by two insulating sleeves respectively with rotating cylinder
Flexible connection so as to drive insulating sleeve to be slided in square insulating pipe by rotating rotating cylinder, and then can realize that insulating boot is long
Degree is freely adjusted, to adapt to different gap sizes between two conducting rods；Due to the metallic conduction piece 8 and the third
The internal diameter of insulating sleeve 9 is matched with the outer diameter of conducting rod, so the both ends of this insulating boot can be set in two conductions
On bar, this sample insulating boot is not easy to fall off；Since rotating cylinder 2 can be directly mounted on insulating bar, so this insulating boot can
It is directly installed and is adjusted by insulating bar, to greatly increase test efficiency；Notch design facilitates connecting rod
The replacement of installation and later stage.
In addition, the present embodiment is by metallic conduction piece 8 adding terminal plate 10 so that it is convenient to test connection；Pass through
Terminal plate 10 is installed on the bottom of metallic conduction piece 8, further facilitates wiring in this way；Pass through connecing in terminal plate 10
Wiring tooth is added in the upper and lower surface of line end, can be effectively prevented wiring in this way and be fallen off；By the way that rotating drum shaft 7 is designed as spiral shell
Bolt so that it is convenient to the installation of rotating drum shaft 7 and later stage replace；It is oriented to conical surface 2f by being added at the inner wall lower port of rotating cylinder 2,
Facilitate in this way and this insulating boot is mounted on insulating bar；By the way that the lower end of rotating cylinder 2 is extended downwardly out length L, try in this way
The personnel of testing can pinch rotating cylinder 2 with receipts, and then facilitate and rotating cylinder 2 is mounted on insulating bar.
The above is only the preferred embodiment of the present invention, is not intended to limit the utility model, all in this practicality
Within novel spirit and principle, any modification, equivalent replacement, improvement and so on should be included in the guarantor of the utility model
Within the scope of shield.
Claims (10)
1. a kind of electrical test neutral point gap earth protective device special isolation cover, which is characterized in that including square insulating pipe
(1), rotating cylinder (2), the first insulating sleeve (3), the second insulating sleeve (4), head rod (5) and the second connecting rod (6),
In,
The square insulating pipe (1) includes the bottom case (1a) and head cover (1b) of U-shaped structure, and the head cover (1b) is installed on the bottom case
The through-hole (1c) for installing the rotating cylinder (2) is equipped on (1a), in the middle part of the bottom surface of the bottom case (1a)；
The upper end closed of the rotating cylinder (2), the rotating cylinder (2) is inserted into the through-hole (1c), and the top surface of the rotating cylinder (2)
It can be mounted on the inner surface of the head cover (1b) to rotation by rotating drum shaft (7), it is corresponding on the lower end outer wall of the rotating cylinder (2)
The position of the through-hole (1c) is equipped with locating ring (2a), is along the circumferential direction equipped with and the positioning on the inner wall of the through-hole (1c)
Ring (2a) matched locating slot (1d), the locating ring (2a) are installed in the locating slot (1d), the rotating cylinder (2) it is upper
Circumferentially spaced on the wall of end side to set there are two connecting rod holding tank (2b), described two connecting rod holding tanks (2b) are interior to divide
The first rotating drum shaft (2c) and the second rotating drum shaft (2d) that She You do not arrange vertically, the lower end inner wall of the rotating cylinder (2) is equipped with can
Internal thread (2e) on insulating bar；
First insulating sleeve (3) is actively plugged in one end of the square insulating pipe (1), second insulating sleeve (4)
It is actively plugged in the other end of the square insulating pipe (1), one end and first insulating sleeve of the head rod (5)
(3) inner end is movably connected, and the other end of the head rod (5) is movably arranged on first rotating drum shaft (2c), institute
The one end and the inner end of second insulating sleeve (4) for stating the second connecting rod (6) are movably connected, second connecting rod (6)
The other end is movably arranged on second rotating drum shaft (2d)；
The outer end of first insulating sleeve (3) is equipped with metallic conduction piece (8), in the outer end of second insulating sleeve (4)
Activity is fitted with third insulating sleeve (9).
2. electrical test as described in claim 1 neutral point gap earth protective device special isolation cover, which is characterized in that
The end activity phase that the inner end of first insulating sleeve (3) passes through first sleeve shaft (3a) and the head rod (5)
Even, the inner end of second insulating sleeve (4) passes through the activity of the end of the second casing shaft (4a) and second connecting rod (6)
It is connected.
3. electrical test as claimed in claim 2 neutral point gap earth protective device special isolation cover, which is characterized in that
The both ends of the head rod (5) are respectively equipped with the first notch (5a), and the both ends of the head rod (5) pass through described
Active card is mounted on the first sleeve shaft (3a) and first rotating drum shaft (2c) one notch (5a) respectively.
4. electrical test as claimed in claim 2 neutral point gap earth protective device special isolation cover, which is characterized in that
The both ends of second connecting rod (6) are respectively equipped with the second notch (6a), and the both ends of second connecting rod (6) pass through described
Active card is mounted on the second casing shaft (4a) and second rotating drum shaft (2d) two notches (6a) respectively.
5. electrical test as described in claim 1 neutral point gap earth protective device special isolation cover, which is characterized in that
The metallic conduction piece (8) is square ring structure, and the metallic conduction piece (8) is coaxially installed on first insulating sleeve (3)
In outer end, it is installed with terminal plate (10) in an axial direction on the metallic conduction piece (8).
6. electrical test as claimed in claim 5 neutral point gap earth protective device special isolation cover, which is characterized in that
The terminal plate (10) is installed on the bottom of the metallic conduction piece (8), and the terminals of the terminal plate (10) is upper and lower
Wiring tooth is equipped on surface.
7. electrical test as described in claim 1 neutral point gap earth protective device special isolation cover, which is characterized in that
The rotating drum shaft (7) is bolt, and the end face center position of the rotating cylinder (2) is equipped with and the matched mounting hole of the bolt, institute
The screw portion for stating bolt is inverted across the mounting hole and is fixedly mounted on corresponding position on the inner surface of the head cover (1b)
Set, the rotating cylinder (2) can rotation movable hanging mounted in the bolt screw head on.
8. electrical test as described in claim 1 neutral point gap earth protective device special isolation cover, which is characterized in that
The internal diameter of the metallic conduction piece (8) and the third insulating sleeve (9) is matched with the outer diameter of conducting rod, the rotating cylinder
(2) the guiding conical surface (2f) being inserted into convenient for the insulating bar is equipped at inner wall lower port.
9. electrical test as described in claim 1 neutral point gap earth protective device special isolation cover, which is characterized in that
After the rotating cylinder (2) is installed in place, the lower end of the rotating cylinder (2) extends downwardly out length L, the length L and is at least 10mm.
10. electrical test as described in claim 1 neutral point gap earth protective device special isolation cover, feature exist
In the rotating cylinder (2), the head rod (5) and second connecting rod (6) are made of insulating materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820523164.6U CN208092095U (en) | 2018-04-13 | 2018-04-13 | Electrical test neutral point gap earth protective device special isolation cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820523164.6U CN208092095U (en) | 2018-04-13 | 2018-04-13 | Electrical test neutral point gap earth protective device special isolation cover |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208092095U true CN208092095U (en) | 2018-11-13 |
Family
ID=64056056
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820523164.6U Withdrawn - After Issue CN208092095U (en) | 2018-04-13 | 2018-04-13 | Electrical test neutral point gap earth protective device special isolation cover |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208092095U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108279326A (en) * | 2018-04-13 | 2018-07-13 | 国家电网公司 | Electrical test neutral point gap earth protective device special isolation cover |
-
2018
- 2018-04-13 CN CN201820523164.6U patent/CN208092095U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108279326A (en) * | 2018-04-13 | 2018-07-13 | 国家电网公司 | Electrical test neutral point gap earth protective device special isolation cover |
| CN108279326B (en) * | 2018-04-13 | 2024-02-06 | 国家电网公司 | Special insulating cover for neutral point gap grounding protection device for electrical test |
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