CN204142947U - Secondary terminals shorting stub is used in mutual inductor test - Google Patents
Secondary terminals shorting stub is used in mutual inductor test Download PDFInfo
- Publication number
- CN204142947U CN204142947U CN201420566135.XU CN201420566135U CN204142947U CN 204142947 U CN204142947 U CN 204142947U CN 201420566135 U CN201420566135 U CN 201420566135U CN 204142947 U CN204142947 U CN 204142947U
- Authority
- CN
- China
- Prior art keywords
- secondary terminals
- mutual inductor
- shorting stub
- wire clamp
- column cap
- 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
- 241000270722 Crocodylidae Species 0.000 claims description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 6
- 229910052802 copper Inorganic materials 0.000 description 5
- 239000010949 copper Substances 0.000 description 5
- 238000004804 winding Methods 0.000 description 2
- 239000004698 Polyethylene (PE) Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
Abstract
The utility model discloses the shorting stub of a kind of mutual inductor test secondary terminals, it is characterized in that, described shorting stub comprises the junction block (1) that has multiple block form spliced eye (101); Multiple wire clamp (3), described wire clamp handle end is provided with plug hole; And many connecting lines (2), described connecting line two ends are equipped with wiring column cap (201), wherein one end wiring column cap (201) is connected with the spliced eye (101) of junction block (1), and other end wiring column cap (201) is detachably electrically connected with the plug hole of wire clamp (3).The utility model structure is simple, is easy to carry about with one, easy to use, is applicable to various different size secondary terminals, and can accomplishes reliable short circuit.
Description
Technical field
The utility model relates to power equipment, specifically a kind of mutual inductor test secondary terminals shorting stub
Background technology
Mutual inductor is mainly divided into current transformer and voltage transformer (VT), runs quantity many in electric system, and in running order for a long time.The Main Function of mutual inductor is for the devices such as electric energy metrical, relay protection, automatically control provide reliable and stable standard secondary current or voltage, its functional reliability to the safe operation of whole electric system all tool be of great significance.In numerous pilot projects of current transformer and voltage transformer (VT) (such as megger test, dielectric dissipation factor test etc.), all requiring secondary terminals short circuit or short circuit grounding, is all generally adopt thin bare copper wire as shorting stub according to convention for many years.But because the mutual inductor Secondary Winding terminal design of different manufacturers, different model exists larger difference, for the dry type mutual inductor of some 35kV and following electric pressure, due to its Secondary Winding terminal board narrow space, employing screw-type designs, the short circuit of secondary terminals just seems and wastes time and energy, and on-the-spot work efficiency is not high.
For common several current transformers, the averaging time adopting bare copper wire short circuit current mutual inductor secondary terminals to spend is shown in table 1.
Table 1 short circuit dry type rheological secondary terminal short circuit time statistical form
Can find out by upper table, adopt bare copper wire short circuit mutual inductor secondary terminals spended time longer, especially for dry type mutual inductor, its secondary terminals of short circuit generally all to spend eight minutes even longer, in the test of the dry-type current transformer particularly in inspection switch cabinet, due to switch cubicle narrow space, the short circuit mutual inductor secondary terminals used time is longer, more require great effort.
In addition, due to bare copper wire in use for some time, easy loose stock, disconnected stock, form burr on surface, easily stab the hand of staff.
Utility model content
In order to avoid the weak point that prior art exists, the utility model provides a kind of structure simple, is easy to carry about with one, easy to use, is applicable to various different size secondary terminals, and can accomplishes the mutual inductor test secondary terminals shorting stub of reliable short circuit.
The utility model technical solution problem adopts following technical scheme:
Secondary terminals shorting stub is used in mutual inductor test, and its design feature is, described shorting stub comprises
One junction block with multiple block form spliced eye;
Multiple wire clamp, described wire clamp handle end is provided with plug hole; And
Many connecting lines, described connecting line two ends are equipped with wiring column cap, and wherein wiring column cap in one end is connected with the spliced eye of junction block, and other end wiring column cap is detachably electrically connected with the plug hole of wire clamp.
The utility model design feature is also:
Many described connecting lines are different in size.
Described wire clamp is sharp mouth crocodile clip.
The earth terminal of described junction block is provided with wire clamp.
Compared with the prior art, the utility model beneficial effect as shown in Figure 2.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation.
Fig. 2 is the utility model beneficial effect figure.
Number in the figure: 1 junction block, 101 spliced eyes, 2 connecting lines, 201 wiring column caps, 3 wire clamps.
By embodiment, explanation is further explained to technical solutions of the utility model below in conjunction with accompanying drawing.
Embodiment
As shown in Figure 1, secondary terminals shorting stub is used in mutual inductor test, comprises the junction block 1 that has multiple block form spliced eye 101; Wire clamp 3 (when specifically implementing, wire clamp is sharp mouth crocodile clip), wire clamp handle end is provided with plug hole; And the connecting line 2 that many different in size, connecting line two ends are equipped with wiring column cap 201, and wherein one end wiring column cap 201 is connected with the spliced eye 101 of junction block 1, and other end wiring column cap 201 is detachably electrically connected with the plug hole of wire clamp 3.The earth terminal of described junction block arranges wire clamp 3 simultaneously.
The present embodiment have employed the testing current line of standard, and connecting line copper core sectional area is 2.5 square millimeters, and maximum trouble free service electric current is more than 10A, and the fine polyethylene insulation sheath of outsourcing fourth, shorting stub is withstand voltage is greater than 3kV.
During embody rule, we add up, in table 2 conventional mutual inductor secondary terminals quantity.
Table 2 mutual inductor secondary terminals quantity statistics table
As shown in table 2, the secondary terminals quantity of most mutual inductor is between 6-10, and the short-circuit line therefore designed by the utility model adopts 10 test splices.
Through site test, we find can firmly by electric mutual inductor secondary terminals short circuit ground connection in the shorting stub of use mutual inductor experiment secondary terminals, and general effect is very good.
Equally for movable front several current transformer, adopt mutual inductor experiment secondary terminals shorting stub short circuit current mutual inductor secondary terminals, the current transformer short circuit twice respectively of each model, the table 34 the utility model shorting stub averaging time short circuit time statistical form spent
As can be seen from Table 3, the time that the utility model secondary terminals shorting stub short circuit dry type stream becomes greatly reduces, and has 8 points needed for original use bare copper wire short circuit secondary terminals within 27 seconds, to be reduced to 47.1 seconds, drastically increases efficiency.
Claims (4)
1. secondary terminals shorting stub is used in mutual inductor test, and it is characterized in that, described shorting stub comprises
One junction block (1) with multiple block form spliced eye (101);
Multiple wire clamp (3), described wire clamp handle end is provided with plug hole; And
Many connecting lines (2), described connecting line two ends are equipped with wiring column cap (201), wherein one end wiring column cap (201) is connected with the spliced eye (101) of junction block (1), and other end wiring column cap (201) is detachably electrically connected with the plug hole of wire clamp (3).
2. mutual inductor test secondary terminals according to claim 1 shorting stub, is characterized in that, described many connecting lines (2) are different in size.
3. mutual inductor test secondary terminals according to claim 1 shorting stub, is characterized in that, described wire clamp (3) is sharp mouth crocodile clip.
4. mutual inductor test secondary terminals according to claim 1 shorting stub, is characterized in that, the earth terminal of described junction block is provided with wire clamp (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420566135.XU CN204142947U (en) | 2014-09-28 | 2014-09-28 | Secondary terminals shorting stub is used in mutual inductor test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420566135.XU CN204142947U (en) | 2014-09-28 | 2014-09-28 | Secondary terminals shorting stub is used in mutual inductor test |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204142947U true CN204142947U (en) | 2015-02-04 |
Family
ID=52419627
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420566135.XU Expired - Fee Related CN204142947U (en) | 2014-09-28 | 2014-09-28 | Secondary terminals shorting stub is used in mutual inductor test |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204142947U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104991096A (en) * | 2015-08-03 | 2015-10-21 | 国家电网公司 | Short circuit plug-in for test |
| CN105680207A (en) * | 2016-03-10 | 2016-06-15 | 国网山东省电力公司莱州市供电公司 | Free experimental short-circuit connector |
-
2014
- 2014-09-28 CN CN201420566135.XU patent/CN204142947U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104991096A (en) * | 2015-08-03 | 2015-10-21 | 国家电网公司 | Short circuit plug-in for test |
| CN105680207A (en) * | 2016-03-10 | 2016-06-15 | 国网山东省电力公司莱州市供电公司 | Free experimental short-circuit connector |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150204 Termination date: 20210928 |