CN204144633U - Detachable electrical short device - Google Patents
Detachable electrical short device Download PDFInfo
- Publication number
- CN204144633U CN204144633U CN201420630157.8U CN201420630157U CN204144633U CN 204144633 U CN204144633 U CN 204144633U CN 201420630157 U CN201420630157 U CN 201420630157U CN 204144633 U CN204144633 U CN 204144633U
- Authority
- CN
- China
- Prior art keywords
- short circuit
- instrument
- sheet
- connection metal
- metal sheet
- 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 - Lifetime
Links
- 239000002184 metal Substances 0.000 claims abstract description 23
- 238000004804 winding Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000002407 reforming Methods 0.000 description 1
- 230000000246 remedial effect Effects 0.000 description 1
Landscapes
- Transformers For Measuring Instruments (AREA)
Abstract
The utility model is detachable electrical short device, it is characterized in that comprising insulated handle 1, bolt hole 2, brace 3, metal hanger 4, wherein insulated handle 1 is screwed on connection metal sheet 3, the side of connection metal sheet 3 is provided with bolt hole 2, the end of the opposite side of connection metal sheet 3 is metal hangers 4.Advantage: 1) dismantle and install this short circuit sheet conveniently, directly just can be completed by tightening nut; 2) be particularly suitable for not allowing the equipment had a power failure uses, such as large-scale power station intelligent electric meter is a lot, when the instrument fault measured, can not need to have a power failure and change, on binding post, use short circuit sheet short circuit current instrument transformer during dismounting instrument, when installing after instrument, remove short circuit sheet; 3) ensure that the safe and reliable operation of the person and equipment.
Description
Technical field
The utility model is a kind of detachable electrical short device of short circuit current instrument transformer secondary side, belongs to assistance application technical field on regulator cubicle.
Background technology
On regulator cubicle, the effect of intelligent instrument is measured and protection; real-time power and power factor is calculated by sample rate current and voltage; facilitate the voltage and current of electrician's real-time inspection bus whether in normal working range; more and more extensive due to what use on electrically along with the raising intelligent instrument of power plant construction technical merit and protective meter, do not get rid of the possibility needing School Affairs to overhaul.But in the process of intelligent instrument, there is following problem:
Because electric equipment is in the process run, the secondary side of current transformer does not allow open circuit, and the size of current transformer primary current and the electric current of secondary load have nothing to do.When instrument transformer normally works, because impedance is very little, close to short-circuit condition, magnetizing force that primary current produces major part compensate by secondary current, total magnetic flux density is little, and secondary winding electromotive force is also little.Once open circuit; secondary winding impedance is infinitely great and electric current equals zero; secondary magnetizing force equals zero; total magnetic force equals the magnetizing force of primary winding; namely primary current becomes magnetizing current, produces very high electromotive force by secondary winding, and its peak value can reach several kilovolts; threaten personal safety, or cause the insulation breakdown of protective device or instrument.
Summary of the invention
The utility model proposes a kind of detachable electrical short device of short circuit current instrument transformer secondary side, its object is intended to conveniently overhaul and prevent secondary side loose contact, as the interim remedial measure of not power failure operation, and the safety of the available protecting person and equipment.
Technical solution of the present utility model: detachable electrical short device, its structure comprises insulated handle, bolt hole, brace, metal hanger, wherein insulated handle is screwed on connection metal sheet, the side of connection metal sheet is provided with bolt hole, and the end of the opposite side of connection metal sheet is metal hanger.
Advantage of the present utility model: 1) improvement cost is less; 2) reforming technology is simple, processing ease; 3) safety of the protection person and equipment.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of detachable electrical short apparatus structure.
Embodiment
As shown in Figure 1, detachable electrical short device, its structure comprises insulated handle 1, bolt hole 2, brace 3, metal hanger 4, wherein insulated handle 1 is screwed on connection metal sheet 3, the side of connection metal sheet 3 is provided with bolt hole 2, the end of the opposite side of connection metal sheet 3 is metal hangers 4.
From connecting terminal block connecting line to 3 binding posts, one section of binding post is through in binding post by screw hole, then the bolt on binding post is screwed, when intelligent instrument and secondary connection are all reliable time, brace not also inside circuit, but when instrument needs replacing or maintenance or secondary wiring terminals not firm, can unclamp the bolt on binding post, go here and there into metal short-circuit device, ensure that current transformer is not opened a way; When the conditions being possessed had a power failure time, be convenient to later maintenance.
Brace 3 is detachable, facilitates fastening and dismounting by tightening nut 4; Insulated handle 1 is screwed on connection metal sheet, and bolt hole 2 is fixed through binding post bolt, and metal hanger 4 connects another one binding post.
Final effect is prolongation electric components useful life, ensure that the safe operation of the person and equipment.
Claims (1)
1. detachable electrical short device, it is characterized in that comprising insulated handle (1), bolt hole (2), brace (3), metal hanger (4), wherein insulated handle (1) is screwed on connection metal sheet (3), the side of connection metal sheet (3) is provided with bolt hole (2), the end of the opposite side of connection metal sheet (3) is metal hanger (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420630157.8U CN204144633U (en) | 2014-10-29 | 2014-10-29 | Detachable electrical short device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420630157.8U CN204144633U (en) | 2014-10-29 | 2014-10-29 | Detachable electrical short device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204144633U true CN204144633U (en) | 2015-02-04 |
Family
ID=52421298
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420630157.8U Expired - Lifetime CN204144633U (en) | 2014-10-29 | 2014-10-29 | Detachable electrical short device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204144633U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117214493A (en) * | 2023-10-16 | 2023-12-12 | 海燕接线盒有限公司 | Junction box structure for electric energy meter |
-
2014
- 2014-10-29 CN CN201420630157.8U patent/CN204144633U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117214493A (en) * | 2023-10-16 | 2023-12-12 | 海燕接线盒有限公司 | Junction box structure for electric energy meter |
| CN117214493B (en) * | 2023-10-16 | 2024-04-30 | 海燕接线盒有限公司 | Junction box structure for electric energy meter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20150204 |