CN209045956U - A kind of short-circuit jumper of CT secondary circuit safety - Google Patents
A kind of short-circuit jumper of CT secondary circuit safety Download PDFInfo
- Publication number
- CN209045956U CN209045956U CN201821523651.9U CN201821523651U CN209045956U CN 209045956 U CN209045956 U CN 209045956U CN 201821523651 U CN201821523651 U CN 201821523651U CN 209045956 U CN209045956 U CN 209045956U
- Authority
- CN
- China
- Prior art keywords
- connection
- connecting wire
- peg
- shelves
- insulator shell
- 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.)
- Active
Links
Landscapes
- Connections Arranged To Contact A Plurality Of Conductors (AREA)
Abstract
A kind of short-circuit jumper of CT secondary circuit safety, including conducting wire and it is connected to two connection-pegs at conducting wire both ends, two connection-pegs are respectively the first connection-peg and the second connection-peg, each connection-peg includes the hollow columnar insulator shell extended up and down, the bottom of insulator shell is provided with the contact pin portion for connecting current terminal row, rotary screw is coated in insulator shell with one heart, is installed with knob at the top of rotary screw；At least four circular baffles are evenly arranged in the insulator shell of first connection-peg from top to bottom, and are provided with the conducting wire connecting with contact pin portion in the interior annular of the top baffle；Rotary screw is connect after capable of passing through baffle with the contact pin portion contact for being set to insulator shell bottom；It is provided with the connecting wire connecting with the rotary screw in the second connection-peg in the interior annular of each baffle, and resistance value successively reduces connecting wire from top to bottom, is provided with the colour code of different colours on baffle according to the difference for being correspondingly connected with conductive line resistance values.
Description
Technical field
The utility model relates to a kind of high-voltage electrical equipment protective devices, are specifically related to a kind of CT secondary circuit
Safety short circuit jumper.
Background technique
In the service work of power equipment, the work such as some replacement routes, transformer and bus protection equipment cannot stop
Electricity carries out, if there are operation tasks for current loop at this time, it is necessary to the secondary circuit of CT be carried out short circuit isolation, do corresponding peace
Full measure；Sealing-in (or bridging) operation is needed in addition, being frequently encountered in daily maintenance, defect elimination, maintenance, unusual fluctuation, technological transformation
The secondary circuit terminal of middle CT encounters drawing mistake, goes to the wrong way interval, holds when if executing sealing-in (or bridging) current transformer terminal
Pedestrian misunderstands when terminal, it is possible to cause misplacement (or bridging), which once will result in switch mis-jumping, protects
The accidents such as shield movement, compressor emergency shutdown, power grid examination.
Summary of the invention
Purpose of the utility model is to overcome the above-mentioned shortcomings and provide a kind of easy to operate, structure is simple, has test shelves
Function, the correctness with low current verification operation that can be safe and reliable provide the CT secondary circuit of fault-tolerant chance for operator
Safety short circuit jumper.
The purpose of this utility model is completed by following technical solution, a kind of CT secondary circuit safety short circuit bridging
Line including conducting wire and is connected to two connection-pegs at conducting wire both ends, and two connection-pegs are respectively one with test shelves
Second connection-peg of the first connection-peg of function and a normal inserting function, each connection-peg include extend up and down it is hollow
Column insulator shell, the bottom of insulator shell is provided with the contact pin portion for connecting current terminal row, in insulator shell
It is coated with the rotary screw that bottom can be connect with the top contact in contact pin portion with one heart, is installed with rotation at the top of the rotary screw
Button；At least four circular baffles are evenly arranged in the insulator shell of first connection-peg from top to bottom, and topmost
The conducting wire connecting with contact pin portion is provided in the interior annular of baffle；After the rotary screw closely can pass through the baffle
It is connect with the contact pin portion contact for being set to insulator shell bottom；It is provided in the interior annular of each baffle and second
The connecting wire of rotary screw connection in connection-peg, and resistance value successively reduces the connecting wire from top to bottom, the baffle
The difference that upper basis is correspondingly connected with conductive line resistance values is correspondingly arranged on the colour code of different colours.
As preferred: the connecting wire is followed successively by the maximum high resistant shelves connecting wire of resistance value, resistance value second from top to bottom
Middle resistance shelves connecting wire, resistance value third low-resistance shelves and the smallest conducting shelves connecting wire of connecting wire resistance value, high resistant shelves connect
Conducting wire, middle resistance shelves connecting wire and low-resistance shelves connecting wire is connect to be made of the synthetic material of high resistivity, as constantan, nickel chromium triangle,
Nickel chromium iron, ferrum-chromium-aluminum etc.；Conducting shelves connecting wire is made of plain conductor.
As preferred: the front end of the hollow columnar insulator shell is pyramidal structure.
As preferred: the contact pin portion is the expansion plug that lower end has expansion function.
The technical effect of the utility model is: having test shelves function, structure is simple, securely and reliably can use low current
The correctness of verification operation provides fault-tolerant chance for operator, prevents the contingency caused by operation error.
Detailed description of the invention
Fig. 1 is schematic diagram when the utility model high resistant shelves connecting wire is connected.
Fig. 2 is schematic diagram when resistance shelves connecting wire is connected in the utility model.
Fig. 3 is schematic diagram when the utility model low-resistance shelves connecting wire is connected.
Fig. 4 is the schematic diagram when connection of shelves connecting wire is connected in the utility model.
Specific embodiment
The utility model is described in detail below in conjunction with attached drawing: as shown in Figs 1-4, described in the utility model one
The short-circuit jumper of the safety of kind of CT secondary circuit, it includes conducting wire and two connection-pegs for being connected to conducting wire both ends, and described two
A connection-peg is respectively the second connection-peg 2 of first connection-peg 1 and a normal inserting function with test shelves function,
Each connection-peg includes the hollow columnar insulator shell 3 extended up and down, and the bottom of insulator shell 3 is provided with for connecting
The contact pin portion 4 of current terminal row, is coated with the rotation that bottom can be connect with the top contact in contact pin portion in insulator shell 3 with one heart
Turn screw rod 5, the top of the rotary screw 5 is installed with knob 6；In the insulator shell 3 of first connection-peg 1 from top to bottom
It is even to be provided at least four circular baffles 7, and be provided with one in the interior annular of the top baffle and led with what contact pin portion was connect
Line 8；The rotary screw 5 can closely pass through after the baffle 7 be set to 4 contact of contact pin portion of insulator shell bottom
Connection；The connecting wire connecting with the rotary screw in the second connection-peg is provided in the interior annular of each baffle 7, and
Resistance value successively reduces the connecting wire from top to bottom, is correspondingly arranged on the baffle according to the difference for being correspondingly connected with conductive line resistance values
There is the colour code of different colours.
Shown in referring to Fig.1, the connecting wire is followed successively by the maximum high resistant shelves connecting wire 8(purple of resistance value from top to bottom
Line), the middle resistance shelves connecting wire 9(green line of resistance value second), the low-resistance shelves connecting wire 10(blue line of resistance value third) and resistance
It is worth the smallest conducting shelves connecting wire 11(red line), high resistant shelves connecting wire 8, middle resistance shelves connecting wire 9 and the connection of low-resistance shelves
Conducting wire 10 is made of the synthetic material of high resistivity, such as constantan, nickel chromium triangle, nickel chromium iron, ferrum-chromium-aluminum, and shelves connecting wire 11 is connected
It is made of plain conductor.
In use, the second connection-peg 2 insertion CT one end, check the first connection-peg 1 rotary screw position, confirm its
The other end that CT is accessed after high resistant gear utilizes the low current of short-circuit jumper shunting by adjusting the gear of the first connection-peg 1
The variation of Functional observation device sampling.
By this running CT secondary circuit of safe shorting stub sealing-in (or bridging), the sampling variation of device is observed, is sentenced
Whether the disconnected CT secondary circuit being shorted is correct, will not cause the malfunction of protective device, automatic device in the process.
Shown in referring to Fig.1, the front end of the hollow columnar insulator shell 3 is pyramidal structure.
Shown in referring to Fig.1, the contact pin portion 4 is the expansion plug that lower end has expansion function, when rotary screw is screwed to
When bottom, expansion plug is strutted, and forms locking function, avoiding in the course of work causes CT to open a way.
When the present embodiment is in use, running CT is met bis- times using high resistant shelves (shown in Fig. 1) sealing-in (or bridging) first
Circuit, when confirmation protective device sampling changes, rotary screw is threaded to fourth speed and is directly connected by the knob of direct rotary top
(shown in Fig. 4)；
When not changed using the sampling of high resistant shelves protective device, rotary screw is threaded to middle resistance shelves by the knob of rotary top
Rotary screw is threaded to fourth speed and is directly connected (shown in Fig. 4) by (shown in Fig. 2) when observation device sampling changes；
When the sampling of resistance shelves protective device does not still change in use, rotary screw is threaded to low by the knob of rotary top
It hinders shelves (shown in Fig. 3), when observation device sampling changes, rotary screw is threaded to fourth speed and is directly connected (shown in Fig. 4).
Specific embodiment described herein is only illustrative of the principle and efficacy of the utility model, not for
Limit the utility model.Any person skilled in the art all can be under the spirit and scope without prejudice to the utility model, to upper
It states embodiment and carries out modifications and changes.Therefore, as long as those of ordinary skill in the art is practical new without departing from this
All equivalent modifications or change completed under the revealed spirit of type and technical idea, should be wanted by the right of the utility model
It asks and is covered.
Claims (4)
1. a kind of short-circuit jumper of CT secondary circuit safety, including conducting wire and two connection-pegs at conducting wire both ends are connected to, it is special
Sign is that two connection-pegs are respectively first connection-peg and a normal inserting function with test shelves function
The second connection-peg, each connection-peg includes the hollow columnar insulator shell extended up and down, and the bottom of insulator shell is set
Be equipped with the contact pin portion for connecting current terminal row, be coated in insulator shell with one heart bottom can with contacted at the top of contact pin portion
The rotary screw of formula connection, is installed with knob at the top of the rotary screw；By upper in the insulator shell of first connection-peg
It is evenly arranged at least four circular baffles under, and is provided with one in the interior annular of the top baffle and is connect with contact pin portion
Conducting wire；The rotary screw can closely pass through after the baffle be set to the contact pin portion contact of insulator shell bottom
Connection；The connecting wire connecting with the rotary screw in the second connection-peg is provided in the interior annular of each baffle, and
Resistance value successively reduces the connecting wire from top to bottom, is correspondingly arranged on the baffle according to the difference for being correspondingly connected with conductive line resistance values
There is the colour code of different colours.
2. the short-circuit jumper of CT secondary circuit safety according to claim 1, which is characterized in that the connecting wire is by upper
The low-resistance shelves of the maximum high resistant shelves connecting wire of resistance value, the middle resistance shelves connecting wire of resistance value second, resistance value third are followed successively by under
And the smallest conducting shelves connecting wire of connecting wire resistance value, high resistant shelves connecting wire, middle resistance shelves connecting wire and the connection of low-resistance shelves
Conducting wire is made of the synthetic material of high resistivity；Conducting shelves connecting wire is made of plain conductor.
3. the short-circuit jumper of CT secondary circuit safety according to claim 1, which is characterized in that the insulator shell
Front end is pyramidal structure.
4. the short-circuit jumper of CT secondary circuit safety according to claim 1, which is characterized in that the contact pin portion is lower end
Portion has the expansion plug of expansion function.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821523651.9U CN209045956U (en) | 2018-09-18 | 2018-09-18 | A kind of short-circuit jumper of CT secondary circuit safety |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821523651.9U CN209045956U (en) | 2018-09-18 | 2018-09-18 | A kind of short-circuit jumper of CT secondary circuit safety |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209045956U true CN209045956U (en) | 2019-06-28 |
Family
ID=67033498
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821523651.9U Active CN209045956U (en) | 2018-09-18 | 2018-09-18 | A kind of short-circuit jumper of CT secondary circuit safety |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209045956U (en) |
-
2018
- 2018-09-18 CN CN201821523651.9U patent/CN209045956U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204666788U (en) | A kind of relay checking seat | |
| CN104241968B (en) | A kind of anti-misoperation short-circuit grounding device | |
| CN102565696A (en) | Quick measuring device of protective pressing plate and measuring method thereof | |
| CN208985418U (en) | Dress table connects electric Simulated training device | |
| CN209417960U (en) | It corrects errors with wiring and connects electric actual training device with the dress table of fabrication evaluation | |
| CN112782444A (en) | Junction box for replacing electric energy meter in live mode | |
| CN209045956U (en) | A kind of short-circuit jumper of CT secondary circuit safety | |
| CN102998573B (en) | Electric arc fault protection device verifying attachment | |
| CN204497496U (en) | The safe energization socket of Almightiness type | |
| CN109521311B (en) | Relay protection multi-outlet pressing plate measuring instrument | |
| CN210347884U (en) | DC power supply simulation grounding test device | |
| CN204065243U (en) | The straight resistive of dry-type transformer compares testing auxiliary device | |
| CN103592561B (en) | Secondary wiring of current mutual inductor testing fixture | |
| CN107132463A (en) | Secondary windings of PT short-circuit preventing device | |
| CN110609199B (en) | Zero and fire wire detection and identification method, device and system | |
| CN110426595B (en) | Ring network unit primary and secondary loop fault detection device | |
| CN208399621U (en) | A kind of partial pressure type electric detonation tube detection device | |
| CN108549044B (en) | Insulation line selection tester for direct current system of transformer substation | |
| CN203275458U (en) | Special terminal for live test of lightening arrester | |
| CN214281702U (en) | Passive high-resistance safety indicator lamp for protecting transmission outlet | |
| CN109375140A (en) | A kind of voltage transformer calibrating installation | |
| CN203643542U (en) | A current transformer secondary connection wire detection apparatus | |
| CN114325185B (en) | Transformer low-voltage wiring detection circuit, PCB and detection device | |
| CN205193186U (en) | Relay protection alarm device | |
| CN203811741U (en) | Single-phase plug type power detector |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |