CN203367704U - Current short-circuit wiring device for terminal strip in relay protection screen - Google Patents
Current short-circuit wiring device for terminal strip in relay protection screen Download PDFInfo
- Publication number
- CN203367704U CN203367704U CN 201320347561 CN201320347561U CN203367704U CN 203367704 U CN203367704 U CN 203367704U CN 201320347561 CN201320347561 CN 201320347561 CN 201320347561 U CN201320347561 U CN 201320347561U CN 203367704 U CN203367704 U CN 203367704U
- Authority
- CN
- China
- Prior art keywords
- wing bolt
- electric conductor
- screw rod
- half portion
- circular electric
- 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
Links
- 239000004020 conductor Substances 0.000 claims abstract description 31
- 230000004323 axial length Effects 0.000 claims description 3
- 230000008878 coupling Effects 0.000 claims description 3
- 238000010168 coupling process Methods 0.000 claims description 3
- 238000005859 coupling reaction Methods 0.000 claims description 3
- 230000001681 protective effect Effects 0.000 description 10
- 238000005516 engineering process Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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Abstract
The utility model discloses a current short-circuit wiring device for a terminal strip in a relay protection screen. The current short-circuit wiring device includes two wiring sub devices used in pairs. The two wiring sub devices are connected via a wire. Each wiring sub device includes a wing bolt and a circular conductor. The upper half portion of a screw of the wing bolt has a greater diameter than that of the lower half portion of the wing bolt. The outer surface of the upper half portion of the screw of the wing bolt is provided with an external screw thread, and the outer surface of the lower half portion is smooth. An internal screw thread matching the external screw thread of the upper half portion of the screw of the wing bolt is disposed in a cavity of the circular conductor. Two attaching rods extending axially along the circular conductor are disposed on the lower end face of the circular conductor. The gap width between the two attaching rods is the same as the diameter of the lower half portion of the screw of the wing bolt. The current short-circuit wiring device provided by the utility model is firm and reliable in connection and can effectively prevent the falling off of a current short-circuit wire of the terminal strip in the relay protection screen, thus ensuring the connectivity of a secondary current circuit and increasing the operation safety of relay protection devices.
Description
Technical field
The utility model relates to electric power tool, specifically relates to a kind of relay-set inner terminal row short circuit current termination.
Background technology
Protective relaying device is arranged in corresponding relay-set, and the current terminal row that the secondary circuit wiring of current transformer is introduced in relay-set by cable is upper, then accesses in protective relaying device by dedicated pin.Usually several different protective relaying devices share a set of secondary loop of mutual inductor wiring by being connected in series; while running into the Commissioning of Relay Protection maintenance; in order not affect the normal operation of other protective relaying devices; guarantee that electric current can normally flow into other protective relaying devices; need to be by the electric current short circuit on terminal board; the turn-off current brace, cut off electric current and the path that needs the protective relaying device of debugging and maintenance again.The on-the-spot terminal board short circuit current wiring of using is conventional short-circuit line at present; conventional short circuit the end of a thread is cylinder; when terminal board electric current line bore dia is slightly larger than conventional short circuit the end of a thread diameter; conventional short circuit the end of a thread is unreliable, unstable with being connected of terminal board electric current line hole; commissioning staff's touching because of carelessness can come off; cause electric current can't normally flow into the protective relaying device of normal operation; the protective relaying device of normal operation can be judged because of current interruptions disconnected causing by accident and misoperation be brought huge potential safety hazard to electric power netting safe running.
The utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art; and a kind of short circuit termination for relay-set inner terminal row electric current is provided; be connected and fixed reliable; can effectively avoid the relay-set inner terminal row short circuit current line problem that comes off; thereby guaranteed the connectedness in secondary current loop, improved the relay-set inner terminal row short circuit current termination of the fail safe of protective relaying device operation.
For completing above-mentioned purpose, the utility model adopts following technical scheme:
A kind of relay-set inner terminal row short circuit current termination, is characterized in that: comprise two wiring separating devices that use in pairs, two wiring
Separating device connects use by wire, each wiring separating device includes wing bolt and circular electric conductor, the screw rod first half diameter of wing bolt is greater than wing bolt Lower Half diameter, wing bolt screw rod first half outer surface is provided with external screw thread, wing bolt screw rod Lower Half smooth outer surface, circular electric conductor middle part is hollow electric conductor, be provided with the internal thread with the external screw thread of wing bolt screw rod first half coupling in the cavity of circular electric conductor, the axial length of circular electric conductor is less than the length that the wing bolt screw rod has the externally threaded screw rod first half, be provided with two along axially extended two fallers of circular electric conductor on the lower surface of circular electric conductor, two fallers are spaced the lower surface in circular electric conductor, gap width between two fallers is identical with wing bolt screw rod Lower Half diameter.
The relay-set inner terminal row short circuit current termination of this structure; in use; external force is applied to the wing bolt head; the rotation wing bolt; promote wing bolt axially vertical mobile to circular electric conductor, because wing bolt screw rod first half diameter is greater than the gap between two fallers, therefore; wing bolt can, by faller both sides skew to the left and right, make two fallers closely be connected with terminal board electric current wiring hole in the vertical moving process of circular electric conductor inner chamber.
In sum, the utility model following advantage compared to existing technology:
The utility model device is for the short circuit termination of relay-set inner terminal row electric current; be connected and fixed reliable; can effectively avoid the relay-set inner terminal row short circuit current line problem that comes off, thereby guarantee the connectedness in secondary current loop, improve the fail safe of protective relaying device operation.
The accompanying drawing explanation
The structural representation that Fig. 1 is the utility model relay-set inner terminal row short circuit current termination.
Circular electric conductor 21 fallers of the label declaration 1 wing bolt 11 wing bolt screw rod first half 12 wing bolt screw rod Lower Half 2
Embodiment
Below in conjunction with embodiment, the utility model is described in more detail.
A kind of relay-set inner terminal row short circuit current termination as shown in Figure 1, comprise two wiring separating devices that use in pairs, two wiring separating devices connect use by wire, each wiring separating device includes wing bolt 1 and circular electric conductor 2, the screw rod first half 11 diameters of wing bolt are greater than wing bolt Lower Half 12 diameters, wing bolt screw rod first half outer surface is provided with external screw thread, wing bolt screw rod Lower Half smooth outer surface, circular electric conductor middle part is hollow electric conductor, be provided with the internal thread with the external screw thread of wing bolt screw rod first half coupling in the cavity of circular electric conductor, the axial length of circular electric conductor is less than the length that the wing bolt screw rod has the externally threaded screw rod first half, on the lower surface of circular electric conductor, be provided with in twos along axially extended two fallers 21 of circular electric conductor, two fallers are spaced the lower surface in circular electric conductor, gap width between two fallers is identical with wing bolt screw rod Lower Half diameter.
It is same as the prior art that the present embodiment is not stated part.
Claims (1)
1. a relay-set inner terminal is arranged the short circuit current termination, it is characterized in that: comprise two wiring separating devices that use in pairs, two wiring separating devices connect use by wire, each wiring separating device includes wing bolt and circular electric conductor, the screw rod first half diameter of wing bolt is greater than wing bolt Lower Half diameter, wing bolt screw rod first half outer surface is provided with external screw thread, wing bolt screw rod Lower Half smooth outer surface, circular electric conductor middle part is hollow electric conductor, be provided with the internal thread with the external screw thread of wing bolt screw rod first half coupling in the cavity of circular electric conductor, the axial length of circular electric conductor is less than the length that the wing bolt screw rod has the externally threaded screw rod first half, be provided with two along axially extended two fallers of circular electric conductor on the lower surface of circular electric conductor, two fallers are spaced the lower surface in circular electric conductor, gap width between two fallers is identical with wing bolt screw rod Lower Half diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320347561 CN203367704U (en) | 2013-06-18 | 2013-06-18 | Current short-circuit wiring device for terminal strip in relay protection screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320347561 CN203367704U (en) | 2013-06-18 | 2013-06-18 | Current short-circuit wiring device for terminal strip in relay protection screen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203367704U true CN203367704U (en) | 2013-12-25 |
Family
ID=49815423
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320347561 Expired - Fee Related CN203367704U (en) | 2013-06-18 | 2013-06-18 | Current short-circuit wiring device for terminal strip in relay protection screen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203367704U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112051516A (en) * | 2020-08-03 | 2020-12-08 | 广东电网有限责任公司 | Current transformer secondary circuit short circuit instrument |
-
2013
- 2013-06-18 CN CN 201320347561 patent/CN203367704U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112051516A (en) * | 2020-08-03 | 2020-12-08 | 广东电网有限责任公司 | Current transformer secondary circuit short circuit instrument |
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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: 20131225 Termination date: 20200618 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |