CN203705490U - Short sealing test wire - Google Patents
Short sealing test wire Download PDFInfo
- Publication number
- CN203705490U CN203705490U CN201420077867.2U CN201420077867U CN203705490U CN 203705490 U CN203705490 U CN 203705490U CN 201420077867 U CN201420077867 U CN 201420077867U CN 203705490 U CN203705490 U CN 203705490U
- Authority
- CN
- China
- Prior art keywords
- fuse
- short
- short sealing
- test wire
- metal 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
- 238000007789 sealing Methods 0.000 title claims abstract description 16
- 238000012360 testing method Methods 0.000 title claims abstract description 15
- 239000002184 metal Substances 0.000 claims abstract description 27
- 238000009413 insulation Methods 0.000 claims abstract description 19
- 230000006378 damage Effects 0.000 abstract description 7
- 238000005516 engineering process Methods 0.000 abstract description 2
- 208000027418 Wounds and injury Diseases 0.000 abstract 1
- 208000014674 injury Diseases 0.000 abstract 1
- 238000012423 maintenance Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001143 conditioned effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000001012 protector Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
Landscapes
- Fuses (AREA)
Abstract
The utility model discloses a short sealing test wire and relates to the plugging member technology field for an electric power system test. The short sealing test wire comprises an insulation box, wherein the insulation box is internally provided with a fuse, two ends of the fuse are respectively provided with metal caps, bottom ends of the metal caps are connected with the insulation box, inner ends of the metal caps are connected with the fuse, outer ends of the metal caps are fixedly connected with inner ends of two short sealing leads respectively, and outer ends of the two short sealing leads are respectively provided with metal connectors. According to the short sealing test wire, a central portion of the short sealing wire is connected in series with the fuse, when short sealing is in fault, the fuse fuses instantly, so injury to a person, damage to equipment and an accident are avoided, and the short sealing test wire is safe and reliable.
Description
Technical field
The utility model relates to electric system test and uses connector art field.
Background technology
When relay protection of power system personnel work on the spot and defect elimination; often need temporary transient by certain a part of short envelope of secondary circuit; for example, while needing when protective relaying device verification intake, the primary equipment of short seal apparatus not have a power failure, carry out protector revise, when short packing checks that from knife switch secondary contact alternating voltage switching circuit, optical difference protection transmission are looked far into the distance short envelope its look far into the distance open into etc.In the time carrying out short envelope, if short envelope is accidentally or to wanting the position misjudgment of short envelope will cause power supply short circuit, produce larger electric arc burn testing crew, the equipment that burns short envelope position, short-circuit current at short envelope position and cause that wire crosses heat damage loop insulation or cause that fire, power supply sky opened thermal tripping, therefore short envelope mistake is very harmful.At present, in the time carrying out short envelope operation, be all to adopt common short envelope line, do not there is short-circuit protection, in the time of short envelope mistake, will damage.
Utility model content
The technical problems to be solved in the utility model is to provide a kind of short testing sealing line, and at short envelope line middle part, string has fuse, in the time of short envelope mistake, and the instantaneous fusing of fuse, thus avoid people and equipment to come to harm and have an accident, there is safe and reliable feature.
Technical solution adopted in the utility model is: a kind of short testing sealing line, comprise insulation booth, described insulation booth inside is provided with fuse, the two ends of fuse are respectively equipped with metal cap, the bottom of metal cap is connected with insulation booth, the inner of metal cap is connected with fuse, and the outer end of metal cap is fixedly connected with two short envelope wire the inners respectively, and the outer end of two short envelope wires is respectively equipped with metal joint.
Best, the rated current of described fuse is 0.5A.Described insulation booth is plastic casing.
The beneficial effect that adopts technique scheme to produce is: the utility model is provided with fuse, the rated current of fuse is selected 0.5A, while guaranteeing short envelope mistake, fuse is opened instantaneous fusing early than controlling sky, can not cause that power supply sky holds tripping operation, work on the spot is more safe and efficient, thereby avoids people and equipment to come to harm and have an accident.When use, only need check that whether fuse is intact, after fusing, only needing to change fuse can normally use, use, safeguard very convenient, simultaneously the utility model, also for the newcomer of technical merit and on-site experience deficiency has created the chance of starting, is conducive to newcomer's Fast Growth.The utlity model has the feature safe, reliable, use and maintenance is convenient, cost is low, there is good promotional value.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Fig. 1 is structural representation of the present utility model.
In figure, 1. short envelope wire, 2. fuse, 3. insulation booth, 4. metal cap, 5. metal joint.
Embodiment
Referring to accompanying drawing 1, a kind of short testing sealing line, comprises insulation booth 3, and described insulation booth 3 is plastic casing, and insulation booth 3 can shield to inner fuse 2, prevents that in box, metal cap 4 causes short circuit because misconnection is tactile simultaneously, plays insulating effect.Insulation booth 3 inside are provided with fuse 2, and the rated current of described fuse 2 is 0.5A, and while guaranteeing short envelope mistake, fuse 2 is opened instantaneous fusing early than controlling sky.The two ends of fuse 2 are respectively equipped with metal cap 4, metal cap 4 has electric conductivity, the bottom of metal cap 4 is connected with insulation booth 3, the inner of metal cap 4 is connected with fuse 2, the outer end of metal cap 4 is fixedly connected with two short envelope wire 1 the inners respectively, the outer end of two short envelope wires 1 is respectively equipped with metal joint 5, and metal joint 5 is connected with the interface that need to carry out short envelope.
The utility model only need check that whether fuse 2 is intact while use, then insert the interface that need to carry out short envelope with the metal joint 5 at short envelope wire 1 two ends and carry out short-circuit operation, in the time of short envelope mistake, the instantaneous fusing of fuse 2, can not cause that power supply sky holds tripping operation, work on the spot is more safe and efficient, thereby avoids people and equipment to come to harm and have an accident.When after fuse 2 fusing, open insulation booth 3, fuse 2 is taken out from metal cap 4, the installation more renewing, operation and maintenance is very convenient.The utility model can be to the corresponding phase of the short envelope voltage transformer (VT) of simulation system phase ground connection open delta, need need be to certain point or the short envelope of certain element, the transmission of relay protection check secondary circuit while searching control loop fault time short Sealed lock conditioned disjunction intake etc. to carry out short envelope operation, has safety, the feature that reliable, use and maintenance is convenient, cost is low.
Claims (3)
1. one kind short testing sealing line, it is characterized in that: comprise insulation booth (3), described insulation booth (3) inside is provided with fuse (2), the two ends of fuse (2) are respectively equipped with metal cap (4), the bottom of metal cap (4) is connected with insulation booth (3), the inner of metal cap (4) is connected with fuse, and the outer end of metal cap (4) is fixedly connected with two short envelope wires (1) the inner respectively, and the outer end of two short envelope wires (1) is respectively equipped with metal joint (5).
2. short testing sealing line according to claim 1, is characterized in that: the rated current of described fuse (2) is 0.5A.
3. short testing sealing line according to claim 1, is characterized in that: described insulation booth (3) is plastic casing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420077867.2U CN203705490U (en) | 2014-02-24 | 2014-02-24 | Short sealing test wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420077867.2U CN203705490U (en) | 2014-02-24 | 2014-02-24 | Short sealing test wire |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203705490U true CN203705490U (en) | 2014-07-09 |
Family
ID=51055910
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420077867.2U Expired - Fee Related CN203705490U (en) | 2014-02-24 | 2014-02-24 | Short sealing test wire |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203705490U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105842487A (en) * | 2016-03-22 | 2016-08-10 | 国网山东省电力公司章丘市供电公司 | Relay protection loop short-circuiting device |
-
2014
- 2014-02-24 CN CN201420077867.2U patent/CN203705490U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105842487A (en) * | 2016-03-22 | 2016-08-10 | 国网山东省电力公司章丘市供电公司 | Relay protection loop short-circuiting device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205752844U (en) | There is the insert row of load priority management function | |
| CN203180517U (en) | Microcomputer arc-extinguishing, harmonic-eliminating and overvoltage-protecting device | |
| CN203705490U (en) | Short sealing test wire | |
| CN202888955U (en) | Lightning protection and double-alternating-current power switching device | |
| CN204440773U (en) | Three grades of aftercurrent action protecting simulation training systems | |
| CN203039363U (en) | Three-phase surge protector | |
| CN201733065U (en) | Low-voltage single-phase power source overvoltage protective device | |
| CN203377449U (en) | Duel temperature regulation safety socket | |
| CN204651645U (en) | The safe electricity-getting converter of replaceable plug | |
| CN103384419A (en) | Self-fusing protecting electric heating device and protecting method thereof | |
| CN203325790U (en) | GIS circuit breaker | |
| CN203707798U (en) | Line-side soft start circuit of converter | |
| CN204144932U (en) | A kind of novel surge protection device | |
| CN201928001U (en) | Open circuit protector of current transformer | |
| CN202473563U (en) | Overcurrent self-protecting transformer | |
| CN201994154U (en) | Full-insulating lightning protection device | |
| CN104600684A (en) | Active arc extinguishing type three-tripping surge protection device | |
| CN204332866U (en) | A kind of safety device for high-voltage power equipment being provided with shell fragment | |
| CN204905838U (en) | Simple and easy overvoltage protection trigger device | |
| CN104466892A (en) | Laboratory power supply protection device | |
| CN105322523A (en) | Novel surge protection device | |
| CN204230854U (en) | Siganl thunder-proof device | |
| CN203367980U (en) | Distribution box with temperature protection device | |
| CN103296670A (en) | Direct current power supply lightning arrester used for electrical power system | |
| CN203071019U (en) | Automatic air switch having temperature protection function |
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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140709 Termination date: 20180224 |