CN201096817Y - Testing tool for distribution transformer load current - Google Patents
Testing tool for distribution transformer load current Download PDFInfo
- Publication number
- CN201096817Y CN201096817Y CNU2007201248508U CN200720124850U CN201096817Y CN 201096817 Y CN201096817 Y CN 201096817Y CN U2007201248508 U CNU2007201248508 U CN U2007201248508U CN 200720124850 U CN200720124850 U CN 200720124850U CN 201096817 Y CN201096817 Y CN 201096817Y
- Authority
- CN
- China
- Prior art keywords
- assembling stand
- magnetic
- load current
- magnetic conductors
- transformer load
- 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
Images
Abstract
A distribution transformer load current test tool comprises an electrical signal sampling mechanism and a device body. The electrical signal sampling mechanism is in fixed connection with the top of an insulation rod component in which the lower part is assembled with the device body, which comprises an assembly seat and two magnetic conductors. The lower part of one magnetic conductor is hinged with the assembly seat, and the lower part of the other magnetic conductor is fixed or hinged with the assembly seat. The upper parts of the two magnetic conductors opposite each other are in contact and enclosed to a sealing ring together with the assembly seat. An elastic reset mechanism is arranged between the two magnetic conductors or between the assembly seat and the magnetic conductors. A guide mechanism is arranged on the contact part of the two magnetic conductors, and the assembly seat is fixed on the insulation rod component. With the utility model, without the requirement of the upper and lower power distribution stages, the operator can easily acquire the measured wiring parameters, and the test time is shortened with the elimination of the potential safety hazards and the enhancement of the operating efficiency. The working days for one test of the distributing and transforming load of towns completed by each distribution station is reduced by three days, and the cost savings within a year is more than 8, 400 yuan. Therefore, the operating costs is reduced significantly.
Description
Technical field
The utility model relates to a kind of electrical instrument, and is particularly a kind of under the situation that does not influence the normal operation of circuit-under-test, obtains the testing tool of circuit-under-test parameter fast.
Background technology
The test of distribution transforming low-pressure side load current is the important routine work of distribution operational management, along with substation transformer is more and more, adopt traditional clamp on amperemeter, also just more and more as DT-266 clamp on amperemeter full test distribution transformer load electric current required time and manpower.In addition, most substation transformers are that bench type is installed, and during with DT-266 pincerlike meter test distribution transformer load electric current, the operator must need expend the long period by the distribution transforming stand measurement up and down of instruments such as ladder, and efficient is extremely low.For example in the one-shot measurement process, the operator measures distribution stand under the operation from taking distribution transforming stand on the ladder to finishing, and need 9 minutes at least, and this process needs at least 3 people to carry out simultaneously.In accordance with regulations, per season is required, and to the test of administration distribution transforming low-pressure side load current once the every month phase of peak load summer should test twice, and promptly daytime, night are respectively once.300 of distribution transformings are administered by a distribution substation, divide two groups to carry out full test one time, need 5 day time approximately.Owing to also have other job placement, distribution operation class often occurs undermanned when arranging work, operator's working strength and pressure are also bigger, and in addition, the operator is last when measuring to the distribution stand, with the electrified body close together, there is bigger security risk.
The utility model patent that a kind of name is called " the dual-purpose clamp on amperemeter of division and composite body " is disclosed in CN2118311U, it is made up of three parts: first be a small-sized pincerlike magnetic circuit and on secondary coil, the secondth, the digital measurement circuit, the 3rd is a cable that first, second parts are coupled together, when zoarium used, first, second parts directly docked.The reometer of above-mentioned split-type structural operates, and than the dirigibility that has more of the clamp on amperemeter of traditional integral formula, but still can not carry out remote-controlled operation, can not play the effect that the person that further do not simplify the operation measures operation and reduces operation intensity.
The utility model content
The purpose of this utility model just provides a kind of simple in structure, service-strong substation transformer load current testing tool, it can make the operator need not upper and lower distribution stand, can obtain electric wire parameter to be measured easily, easy and simple to handle, efficiency of measurement significantly improves.
The purpose of this utility model is to realize by such technical scheme, it comprises electric signal sampling mechanism and table body, the electric signal sampling mechanism is connected with the table body by lead, constitute the closed-loop path, electric signal sampling mechanism and insulating bar assembly top are affixed, and insulating bar assembly bottom is equipped with the table body; The electric signal sampling mechanism includes assembling stand and two magnetic conductors, magnetic conductor bottom and assembling stand are hinged, another magnetic conductor bottom and assembling stand are fixed or are hinged, two magnetic conductor tops opposite each other contact, surround a closed level with assembling stand, be provided with flexible restoring organ between two magnetic conductors or between assembling stand and the magnetic conductor, two magnetic conductor contact positions are provided with the guiding mechanism that electric wire to be measured can be imported, derives closed level, and assembling stand is fixed on the insulating bar assembly.
Because the electric signal sampling mechanism is the branch body structure with the table body, and connects by the insulating bar assembly between the two, the operator can be provided with the length of insulating bar assembly according to the true altitude of electric wire to be measured.In the actual measurement operation, the operator needn't upper and lower again distribution stand, but stand on the ground, by controlling the insulating bar assembly in the hand, make the close and contact measured electric wire of electric signal sampling mechanism, apply less power then, electric wire to be measured overcomes the pretightning force of flexible restoring organ easily, slips into closed level through guiding mechanism.Behind to be measured the finishing, skid off closed level by guiding mechanism again.When electric wire to be measured slips into closed level, promptly be arranged in the closed-loop path, the electric current that changes in the electric wire to be measured produces induced current in the closed-loop path, and induced current inputs to table body 1 through lead 2, obtains the parameter of electric wire to be measured.
Owing to adopted technique scheme, the utlity model has simple in structure, easy to use and reliable advantage, it can make the operator need not upper and lower distribution stand, can obtain electric wire parameter to be measured easily, shorten the test duration, reduced operation intensity, and eliminated potential safety hazard, improved operating efficiency greatly, each distribution substation is finished reduced 3 the working day of once testing the cities and towns distribution transformer load, surplus cost saving reaches 8400 in 1 year yuan, operating cost significantly reduces.
Description of drawings
Description of drawings of the present utility model is as follows:
Fig. 1 is first kind of structural representation of the present utility model;
Fig. 2 is second kind of structural representation of the present utility model;
Fig. 3 is the enlarged drawing of A part among Fig. 2;
Fig. 4 is first kind of structural representation of insulating bar;
Fig. 5 is second kind of structural representation of insulating bar;
Fig. 6 is the third structural representation of insulating bar;
Among the figure: 1. show body; 2. lead; 3. assembling stand; 4. magnetic conductor; 5. approaching face; 6. derivation face; 7. orienting lug; 8. locating notch; 9. locating convex block; 10. back-moving spring; 11. magnetic conductor locating part; 12. insulation tube; 13. metallic plug; 14. metal consent; 15. pipe adapter; 16. pipe adapter cover; 17. insulation sleeve.
Embodiment
The utility model is described in further detail below in conjunction with drawings and Examples:
Shown in Fig. 1 or 2, the utility model comprises electric signal sampling mechanism and table body 1, and the electric signal sampling mechanism is connected with table body 1 by lead 2, constitutes the closed-loop path, electric signal sampling mechanism and insulating bar assembly top are affixed, and insulating bar assembly bottom is equipped with table body 1; The electric signal sampling mechanism includes assembling stand 3 and two magnetic conductors 4, one of them magnetic conductor 4 bottom and assembling stand 3 are hinged, another magnetic conductor 4 bottoms and assembling stand 3 are fixing or hinged, two magnetic conductor 4 tops opposite each other contact and surround a closed level with assembling stand 3, be provided with flexible restoring organ between two magnetic conductors 4 or between assembling stand 3 and the magnetic conductor 4, two magnetic conductors, 4 contact positions are provided with the guiding mechanism that electric wire to be measured can be imported, derives closed level, and assembling stand 3 is fixed on the insulating bar assembly.
As shown in Figure 1, magnetic conductor 4 can be curved electromagnetic core, two electromagnetic cores are opposite each other, left side electromagnetic core and assembling stand 3 are fixing, right side electromagnetic core and assembling stand 3 are hinged, and be connected with spring between right side electromagnetic core and the assembling stand, promptly form one between two electromagnetic cores and the assembling stand 3 and can open closed closed level.
As shown in Figure 2, guiding mechanism can be arranged on the approaching face 5 and the derivation face 6 of two magnetic conductors, 4 inboards, and approaching face 5 and derivation face 6 lay respectively at the above and below at two magnetic conductors, 4 contact position places.As shown in Figure 2, orienting lug 7, two orienting lugs 7 inboards that guiding mechanism also can be arranged on two magnetic conductors, 4 tops are provided with approaching face 5 and derivation face 6, and described approaching face 5 and derivation face 6 lay respectively at the above and below at two magnetic conductors, 7 contact position places.
As shown in Figure 1, left side orienting lug 7 is provided with locating notch 8, and right side orienting lug 7 is provided with locating convex block 9.The locating notch 8 and the locating convex block 9 that cooperatively interact make electric wire to be measured before and after importing or deriving closed level, and the top of two magnetic conductors 4 remains contact, thereby guarantee magnetic conductor 4 and show to become a closed-loop path all the time between the written or printed documents 1.
As shown in Figure 1, the bottom of right side magnetic conductor 4 and assembling stand 3 are hinged, and the bottom of left side magnetic conductor 4 and assembling stand 3 are fixing, and flexible restoring organ is a back-moving spring 10, one end of back-moving spring 10 is against on the assembling stand 3, and the other end is against on the magnetic conductor 4 that is hinged with assembling stand 3.
As shown in Figure 2, the magnetic conductor 4 of and arranged on left and right sides is all hinged with assembling stand 3, and flexible restoring organ is a back-moving spring 10, and back-moving spring 10 is between the magnetic conductor 4 and assembling stand of correspondence, one end of back-moving spring 10 all is against on the assembling stand 3, and the other end is against respectively on the bottom of two magnetic conductors 4; Assembling stand 3 is provided with magnetic conductor locating part 11.11 pairs of magnetic conductors of magnetic conductor limited block 4 carry out spacing, prevent that magnetic conductor 4 opening angles are excessive or shaking amplitude is excessive, are beneficial to the importing of electric wire to be measured.
The insulating bar assembly can be made of an insulation tube 12, also can constitute by at least two insulation tubes 12, the quantity of insulation tube 12 can by the operator according to etc. the true altitude of survey electric wire determine.
When insulation tube 12 is many, as shown in Figure 2, can connect into the rod shaped structure of an integral body between the adjacent insulation tube 12 from beginning to end by screw thread; Or as shown in Figure 6, insulation tube 12 also can be the gradually little tubular structure of diameter, overlaps each other between the adjacent insulation tube 12 and dresses up the rod shaped structure that is similar to " fishing rod " shape extension type.Or shown in Fig. 2 and 5, insulation tube 12 two ends can also be respectively arranged with the metallic plug 13 and metal consent 14 that matches, and lead 4 one ends that are positioned at insulation tube 12 are connected with metallic plug 13, and another is connected with metal consent 14; One end of insulation tube 12 is connected with is with externally threaded pipe adapter 15, and the pipe adapter that is with of the other end activity of insulation tube 12 overlaps 16, and pipe adapter 15 that matches and pipe adapter cover 16 connect into adjacent insulation tube 12 rod shaped structure of an integral body.The insulation tube assembly of said structure all can carry out folding, and it is very convenient to use.
As shown in Figure 1, be set with insulation sleeve 19 on the magnetic conductance basis, these insulation 19 covers can be the insulation engineering plastics.When electric wire to be measured was exposed shape, the outer engineering ambroin that covers can guarantee security measurement on the magnetic conductor 4.
Be that example further specifies use principle of the present utility model to measure a station power distribution transformer now in conjunction with Fig. 1:
Claims (10)
1. substation transformer load current testing tool, comprise electric signal sampling mechanism and table body (1), the electric signal sampling mechanism is connected with table body (1) by lead (2), constitute the closed-loop path, it is characterized in that: electric signal sampling mechanism and insulating bar assembly top are affixed, and insulating bar assembly bottom is equipped with table body (1); The electric signal sampling mechanism includes assembling stand (3) and two magnetic conductors (4), one of them magnetic conductor (4) bottom and assembling stand (3) are hinged, another magnetic conductor (4) bottom and assembling stand (3) are fixing or hinged, two magnetic conductors (4) top opposite each other contacts, and surround a closed level with assembling stand (3), be provided with flexible restoring organ between two magnetic conductors (4) or between assembling stand (3) and the magnetic conductor (4), contact position, two magnetic conductors (4) upper end is provided with and electric wire to be measured can be imported, derive the guiding mechanism of closed level, assembling stand (3) is fixed on the insulating bar assembly.
2. substation transformer load current testing tool according to claim 1, it is characterized in that: guiding mechanism is arranged on two magnetic conductors (4) inboard approaching face (5) and derivation face (6), and described approaching face (5) and derivation face (6) lay respectively at the above and below at contact position place, two magnetic conductors (4) upper end.
3. substation transformer load current testing tool according to claim 1, it is characterized in that: guiding mechanism is arranged on the orienting lug (7) at two magnetic conductors (4) top, two orienting lugs (7) inboard is provided with approaching face (5) and derivation face (6), and described approaching face (4) and derivation face (5) lay respectively at the above and below at two magnetic conductors (4) contact position place.
4. substation transformer load current testing tool according to claim 3 is characterized in that: an orienting lug (7) is provided with locating notch (8), and another orienting lug (7) is provided with the locating convex block (9) that matches with locating notch (8).
5. substation transformer load current testing tool according to claim 1, it is characterized in that: magnetic conductor (4) bottom and assembling stand (3) are hinged, another magnetic conductor (4) bottom and assembling stand (3) are fixing, flexible restoring organ is back-moving spring (10), one end of described back-moving spring (10) is against on the assembling stand (3), and the other end is against on the magnetic conductor (4) that is hinged with assembling stand (3).
6. substation transformer load current testing tool according to claim 1, it is characterized in that: two magnetic conductors (4) are all hinged with assembling stand (3), flexible restoring organ is two back-moving springs (10), one end of two back-moving springs (10) all is against on the assembling stand (3), and the other end is against respectively on two magnetic conductors (4); Assembling stand (3) is provided with magnetic conductor locating part (11).
7. substation transformer load current testing tool according to claim 1 is characterized in that: the insulating bar assembly is made of at least two insulation tubes (12), connects into the rod shaped structure of an integral body between the adjacent insulation tube (12) from beginning to end by screw thread.
8. substation transformer load current testing tool according to claim 1, it is characterized in that: the insulating bar assembly is made of at least two insulation tubes (12), insulation tube (12) is the gradually little tubular structure of diameter, overlaps the rod shaped structure of dressing up extension type between the adjacent insulation tube (12) each other.
9. substation transformer load current testing tool according to claim 1, it is characterized in that: the insulating bar assembly is made of at least two insulation tubes (12), insulation tube (12) two ends are respectively arranged with the metallic plug (13) and metal consent (14) that matches, lead (4) one ends that are positioned at insulation tube (12) are connected with metallic plug (13), and another is connected with metal consent (14); One end of insulation tube (12) is connected with is with externally threaded pipe adapter (15), the other end activity of insulation tube (12) be with the tapped pipe adapter cover (16) that matches with pipe adapter (15).
10. according to claim 1,2,3,4,5,6,7,8 or 9 described substation transformer load current testing tools, it is characterized in that: be set with insulation sleeve (17) on the magnetic conductor (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201248508U CN201096817Y (en) | 2007-07-30 | 2007-07-30 | Testing tool for distribution transformer load current |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201248508U CN201096817Y (en) | 2007-07-30 | 2007-07-30 | Testing tool for distribution transformer load current |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201096817Y true CN201096817Y (en) | 2008-08-06 |
Family
ID=39923870
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201248508U Expired - Fee Related CN201096817Y (en) | 2007-07-30 | 2007-07-30 | Testing tool for distribution transformer load current |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201096817Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102636688A (en) * | 2012-04-27 | 2012-08-15 | 武汉电力职业技术学院 | Detector for unbalance ratio of three-phase current of low-voltage line |
| CN102922460A (en) * | 2012-10-30 | 2013-02-13 | 辽宁省电力有限公司盘锦供电公司 | Ground potential live working wrench |
| CN107677852A (en) * | 2017-06-23 | 2018-02-09 | 国家电网公司 | A kind of Telescopic clip-on ammeter |
-
2007
- 2007-07-30 CN CNU2007201248508U patent/CN201096817Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102636688A (en) * | 2012-04-27 | 2012-08-15 | 武汉电力职业技术学院 | Detector for unbalance ratio of three-phase current of low-voltage line |
| CN102636688B (en) * | 2012-04-27 | 2014-11-26 | 武汉电力职业技术学院 | Detector for unbalance ratio of three-phase current of low-voltage line |
| CN102922460A (en) * | 2012-10-30 | 2013-02-13 | 辽宁省电力有限公司盘锦供电公司 | Ground potential live working wrench |
| CN107677852A (en) * | 2017-06-23 | 2018-02-09 | 国家电网公司 | A kind of Telescopic clip-on ammeter |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105954594B (en) | A kind of reverse short distance measurement method and device of Novel connecting ground network ground resistance | |
| CN106018900A (en) | Novel rapidly wired combined intelligent electric meter | |
| CN201096817Y (en) | Testing tool for distribution transformer load current | |
| CN209860353U (en) | Grounding component of power transformation and distribution device | |
| CN203443993U (en) | Electric energy metering wiring apparatus | |
| CN204882739U (en) | Remote portable relay protection testing case | |
| CN205428682U (en) | Current transformer integrated device | |
| CN205450042U (en) | Experimental switching operation platform of power transformer | |
| CN103777057A (en) | True-root-mean-square capacitive current tester | |
| CN102169754B (en) | Current and voltage transformer | |
| CN206907961U (en) | Electric power meter secondary connection cable | |
| CN202362352U (en) | Load current testing tool for distribution transformer | |
| CN203365519U (en) | Sampling device for high-voltage bushing electrified detection test | |
| CN104007294B (en) | Overhead line parameter measurement wiring device | |
| CN207148153U (en) | A kind of pincerlike current sensor of suitable plurality of specifications wire | |
| CN103983814A (en) | Comprehensive test case for transformer | |
| CN204166019U (en) | A kind of easy device producing big current | |
| CN204204617U (en) | A kind of guide tracked current transformer | |
| CN203365556U (en) | Temporary earthing device for public change earth resistance measurement | |
| CN106018902A (en) | Intelligent meter with quick-replaceable and high-insulation wiring device | |
| CN205139227U (en) | Current conversion station earthing pole feeder cable current test device | |
| CN202693724U (en) | Safety testing equipment of command and control vehicle power distribution device | |
| CN207801216U (en) | A kind of mounting structure of bracket mount type current transformer suitable for switchgear | |
| CN207866882U (en) | A kind of list instrument secondary pressurized device | |
| CN203310928U (en) | Transformer bushing ct characteristic test device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080806 Termination date: 20100730 |