CN104698293A - Multipurpose three-phase test device - Google Patents
Multipurpose three-phase test device Download PDFInfo
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- CN104698293A CN104698293A CN201310658872.2A CN201310658872A CN104698293A CN 104698293 A CN104698293 A CN 104698293A CN 201310658872 A CN201310658872 A CN 201310658872A CN 104698293 A CN104698293 A CN 104698293A
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Abstract
The invention discloses a multipurpose three-phase test device, and belongs to the field of measuring devices. The multipurpose three-phase test device is provided with a test bar. A left-phase contact probe, a middle-phase contact probe and a right-phase contact probe are arranged at the front end of the test bar and are respectively correspondingly connected with three signal input ends of a three-phase tester by wires; two telescopic sleeves are respectively arranged at two edges of a transverse rod at the front end of the test bar; the left-phase contact probe and the right-phase contact probe are respectively fixed onto the telescopic sleeves; the middle-phase contact probe is fixed onto a middle fixing portion of the transverse rod; the left-phase contact probe and the right-phase contact probe are fixed onto the transverse rod at the front end of the test bar, and the middle-phase contact probe is fixed onto the transverse rod at the front end of the test bar by the aid of a spring; the three-phase tester is fixed onto a handheld rod of the test bar. The multipurpose three-phase test device has the advantages that contact frequencies of operators and live equipment can be reduced owing to a three-phase test point simultaneous contact measurement mode, accordingly, work risks can be reduced for test persons, inter-phase short-circuit accidents can be prevented, and the multipurpose three-phase test device is beneficial to increasing the speeds of integral test work; the multipurpose three-phase test device can be widely used in the fields of three-phase electric signal tests for low-voltage power supply systems.
Description
Technical field
The invention belongs to measurement mechanism field, particularly relate to a kind of three-phase phase-sequence calibration equipment for low-voltage alternating-current electric power system.
Background technology
In the actual power operation process of electric system, often to measure the phase sequence (being commonly called as nuclear phase) of three-phase alternating-current supply, such as, being incorporated into the power networks of generator, installation/the wiring of irreversible motor, the installation of power factor meter, three-phase wattless component watt-hour meter, crane/elevator, all will measure the phase sequence of three-phase alternating-current supply in advance, can not connect anti-.Therefore checked phase sequence, be an important process step of safe confession/electricity consumption.
As the independent low-tension supply to user's power transmission, pole transformer (being commonly called as bar to become) is equipment very general in operation of power networks, in resident powering, accounting for very important status, in order to ensure the reliable electricity consumption of resident, all will carry out renewal and the exchange of large gauge rod change every year.
In order to ensure the reliable electricity consumption of user, phase sequence checking to be carried out before bar change stops labour and after multiple labour, judging that bar modifies tone with this and changing forward and backward phase sequence consistance.
Be arranged on electric pole because bar becomes, field condition limit, and directly can not carry out the nuclear phase work of three-phase alternating-current supply phase sequence to it, so usually after circuit energising, with phase-sequence meter live testing on the crane case plug-in strip of bar change output terminal, the sense of rotation of observing phase-sequence meter judges phase sequence.
And when carrying out nuclear phase operation on charged crane case plug-in strip, the work risk of tester is large, easily there is low-voltage electric shock accident, cause the prolongation of running time, directly affects the progress of other installation, test job.
Concrete analysis is got off, and following factors is the main cause causing above-mentioned danger and problem to exist:
1, just must can carry out School Affairs near charging equipment and obtain check results, the safe distance of more than 30 centimetres can not be kept to carry out verifying with charging equipment, easily low-voltage electric shock accident occur;
2, three phase-sequence meter wire clamps will be assigned successively on crane case three-phase knife switch, and the three-phase wire clamp size of existing phasing tester is little, in measuring process, little with the contact area of plug-in strip, and easily come off, once come off, tester goes to contact with charging equipment again again, adds danger; And the alternate spacing of existing crane case three-phase knife switch only has 8 centimetres, in checking procedure, easily touch another has electric knife switch and phase fault occurs by mistake mutually;
3, the cleaning of connection wire, the winding between wire to be eliminated, recognizes, checks each phase conductor, add the preliminary work time, have impact on the progress of whole test job before each operation.
How reducing the work risk of tester, avoid low-voltage electric shock accident occurs, shorten the running time, improve the speed of test job, is the anxious problem waiting to solve in on-the-spot nuclear phase work.
Summary of the invention
Technical matters to be solved by this invention is to provide a kind of multi-usage three-phase proving installation, its measurement pattern adopting three-phase measuring point simultaneously to contact, once read the three-phase electricity signal on object to be measured, the frequency of exposure of operator and charging equipment can be reduced, reduce the work risk of tester, avoid phase fault accident occurs, decrease the preliminary work time, contribute to the speed improving whole test job.
Technical scheme of the present invention is: provide a kind of multi-usage three-phase proving installation, comprise three-phase tester, it is characterized in that: arrange a front end with left, center, right contact probe prod; Described left, center, right contact to pop one's head in and are arranged on the cross bar of prod front end; The described left, center, right probe that contacts connects through wire is corresponding with three signal input parts of three-phase tester respectively; The contact sonde of left and right two-phase described in it is fixed on the cross bar of prod front end, and the contact sonde of described middle phase is fixed on through spring on the cross bar of prod front end; Described three-phase tester is fixed on the holding rod of prod; The both sides of described prod front end cross bar, arrange a telescopic sleeve respectively; The contact sonde of described left and right two-phase is separately fixed on the telescopic sleeve on the both sides of cross bar; The contact sonde of described middle phase is fixed on the fixed part in the middle of cross bar.
The cross bar of prod described in it becomes 90 degree of angles to arrange with the holding rod of described prod.
Concrete, described wire is arranged in the body of rod of prod.
Further, the head end of described wire, the cross bar through prod is inner, correspondingly with left, center, right three-phase contact sonde respectively connects; The end of described wire, the holding rod through prod is inner, correspondingly with three signal input parts of the three-phase tester be fixed on holding rod respectively connects.
Three-phase tester data display surface described in it is fixed on the holding rod of prod upward.
For hard contact formula is connected between the contact sonde of left and right two-phase described in it and the left and right two-phase plug-in strip of object three-phase knife switch to be measured; The contact sonde of described middle phase makes between the middle phase plug-in strip of object three-phase knife switch as elastic contact type is connected with to be measured.
The spacing contacted between probe of left, center, right described in it equals the alternate spacing of each plug-in strip of object three-phase knife switch to be measured.
Three-phase tester described in it is three-phase phase-sequence tester, three-phase voltage meter or three-phase frequency meter.
Compared with the prior art, advantage of the present invention is:
1. adopt front end with the prod structure of three-phase contact sonde, ensure that keeps a safe distance between tester and charging equipment carries out verification operation;
2. three-phase contact sonde is set, once reads the three-phase electricity signal of object to be measured, decrease the number of times that tester contacts with charging equipment;
3. change wire clamp into contact sonde, effectively can avoid the generation of phase fault accident;
4. contact between probe and prod and spring is set, make between its with corresponding blade of knife switch, to form elastic contact type to connect, contribute to ensureing the close contact between three-phase contact sonde and corresponding three-phase knife switch sheet, avoid the loose contact caused because the fore-and-aft distance between probe and plug-in strip blade is inconsistent;
5. adopt built-in conductor structure, both can prevent the winding between wire, and save the preliminary work times such as identification, arrangement, improve the progress of whole test job, the unexpected hanging and pulling of wire and charged three-phase knife switch can be avoided again and contact, help avoid the generation of low-voltage electric shock accident;
6. prod front end adopts telescopic sleeve structure, effectively can reduce volume during whole device off working state, be easy to carry.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
In figure, 1 to contact probe for a left side, 2 be in contact probe, 3. for the right side contacts probe, 4 is cross bar, and 5a is wire, and 6 is three-phase tester, and 7a is signal input part, and 8 is spring, and 9 is holding rod, and 10 is data display surface, and 11,12 is telescopic sleeve.
Embodiment
Below in conjunction with accompanying drawing, the present invention will be further described.
In Fig. 1, technical scheme of the present invention provides a kind of multi-usage three-phase proving installation, comprises three-phase tester, and it arranges a front end and to contact with left, center, right the prod of probe 1,2,3; Described left, center, right contact to pop one's head in and are arranged on the cross bar 4 of prod front end; Described left, center, right contact and pop one's head in respectively through three signal input parts (in figure for 7a, lower same) the corresponding connection of wire (for 5a in figure, lower same) with three-phase tester 6; The contact sonde of left and right two-phase described in it is fixed on the cross bar of prod front end, and the contact sonde of described middle phase is fixed on through spring 8 on the cross bar of prod front end; Described three-phase tester is fixed on the holding rod 9 of prod; The both sides of described prod front end cross bar, arrange a telescopic sleeve 11 and 12 respectively; The contact sonde of described left and right two-phase is separately fixed on the telescopic sleeve on the both sides of cross bar; The contact sonde of described middle phase is fixed on the fixed part in the middle of cross bar.
The cross bar of prod described in it becomes 90 degree of angles to arrange with the holding rod of described prod.
Concrete, described wire is arranged in the body of rod of prod.
Further, the head end of described wire 5a, the cross bar through prod is inner, correspondingly with left, center, right three-phase contact sonde respectively connects; The end of described wire, the holding rod through prod is inner, correspondingly with three signal input part 7a of the three-phase tester be fixed on holding rod respectively connects.
The data display surface 10 of the three-phase tester 6 described in it is fixed on the holding rod of prod upward.
For hard contact formula is connected between the contact sonde of left and right two-phase described in it and the left and right two-phase plug-in strip of object three-phase knife switch to be measured; The contact sonde of described middle phase makes between the middle phase plug-in strip of object three-phase knife switch as elastic contact type is connected with to be measured.
Contact in why adopting the structure of probe on the cross bar that spring is fixed on prod front end, because left, formation surface of contact (determine straight line) is corrected at 2 before right two-phase contact sonde, so left, a left side for three-phase knife switch in the contact sonde of right two-phase and crane case to be measured, the connection mode of direct contact type is adopted between right two-phase plug-in strip, in order to the front end of the probe that contacts in ensureing is good with the contact between phase plug-in strip in three-phase knife switch in crane case to be measured, therefore make the elasticity connection mode for elastic contact type between the contact sonde of middle phase and the middle phase plug-in strip of three-phase knife switch in crane case to be measured.
In other words, in to contact the structure of probe on the cross bar that spring is fixed on prod front end, contribute to ensureing the close contact between the three-phase contact sonde of this device and corresponding three-phase knife switch sheet, avoid the loose contact caused because probe is different from longitudinal size between plug-in strip blade.
It is by adopting telescopic sleeve structure, can ensure that the described left, center, right spacing contacted between probe equals the alternate spacing of each plug-in strip of object three-phase knife switch to be measured on the one hand, also effectively can reduce volume during whole device off working state on the other hand, be easy to carry and receive.
Because the spacing of left, center, right mutually between three contact sondes equals the alternate spacing of each plug-in strip of object three-phase knife switch to be measured, ensure that the front face between contact sonde and each plug-in strip, the electric signal read work again caused because of the loose contact between probe and plug-in strip blade can be avoided, shorten the working time of on-the-spot actual test, improve test job efficiency.
Three-phase tester described in it is three-phase phase-sequence tester, three-phase voltage meter or three-phase frequency meter.
Due to the measurement pattern that the present invention adopts three-phase measuring point to contact simultaneously, decrease the frequency of exposure of operator and charging equipment, reduce the work risk of tester, ensure that the close contact between three-phase contact sonde and corresponding three-phase knife switch sheet, can avoid phase fault accident occurs, decrease the preliminary work time, contribute to the speed improving whole test job.
The present invention can be widely used in the three-phase electricity signal testing field of low-voltage power supply system.
Claims (8)
1. a multi-usage three-phase proving installation, comprises three-phase tester, it is characterized in that:
Arrange a front end with left, center, right contact probe prod;
Described left, center, right contact to pop one's head in and are arranged on the cross bar of prod front end;
The described left, center, right probe that contacts connects through wire is corresponding with three signal input parts of three-phase tester respectively;
The contact sonde of left and right two-phase described in it is fixed on the cross bar of prod front end, and the contact sonde of described middle phase is fixed on through spring on the cross bar of prod front end;
Described three-phase tester is fixed on the holding rod of prod;
The both sides of described prod front end cross bar, arrange a telescopic sleeve respectively;
The contact sonde of described left and right two-phase is separately fixed on the telescopic sleeve on the both sides of cross bar;
The contact sonde of described middle phase is fixed on the fixed part in the middle of cross bar.
2., according to multi-usage three-phase proving installation according to claim 1, it is characterized in that the cross bar of described prod becomes 90 degree of angles to arrange with the holding rod of described prod.
3., according to multi-usage three-phase proving installation according to claim 1, it is characterized in that described wire is arranged in the body of rod of prod.
4. according to multi-usage three-phase proving installation according to claim 3, it is characterized in that the head end of described wire, the cross bar through prod is inner, correspondingly with left, center, right three-phase contact sonde respectively connects; The end of described wire, the holding rod through prod is inner, correspondingly with three signal input parts of the three-phase tester be fixed on holding rod respectively connects.
5., according to multi-usage three-phase proving installation according to claim 1, it is characterized in that described three-phase tester data display surface is fixed on the holding rod of prod upward.
6., according to multi-usage three-phase proving installation according to claim 1, it is characterized in that between the contact sonde of described left and right two-phase and the left and right two-phase plug-in strip of object three-phase knife switch to be measured for hard contact formula is connected; The contact sonde of described middle phase makes between the middle phase plug-in strip of object three-phase knife switch as elastic contact type is connected with to be measured.
7., according to multi-usage three-phase proving installation according to claim 1, it is characterized in that the described left, center, right spacing contacted between probe equals the alternate spacing of each plug-in strip of object three-phase knife switch to be measured.
8., according to multi-usage three-phase proving installation according to claim 1, it is characterized in that described three-phase tester is three-phase phase-sequence tester, three-phase voltage meter or three-phase frequency meter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310658872.2A CN104698293B (en) | 2013-12-06 | 2013-12-06 | A kind of multipurpose three-phase test device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310658872.2A CN104698293B (en) | 2013-12-06 | 2013-12-06 | A kind of multipurpose three-phase test device |
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| Publication Number | Publication Date |
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| CN104698293A true CN104698293A (en) | 2015-06-10 |
| CN104698293B CN104698293B (en) | 2018-11-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310658872.2A Active CN104698293B (en) | 2013-12-06 | 2013-12-06 | A kind of multipurpose three-phase test device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106324373A (en) * | 2016-11-28 | 2017-01-11 | 国网山东省电力公司济宁供电公司 | Handhold phase sequence detecting device and phase sequence detecting system |
| CN107607771A (en) * | 2017-08-31 | 2018-01-19 | 合保电气（芜湖）有限公司 | Insulator charged detection instrument |
| CN109540249A (en) * | 2018-12-27 | 2019-03-29 | 佛山科学技术学院 | A kind of clearance adjustment mechanism of detection probe |
Citations (7)
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| CN87200670U (en) * | 1987-01-20 | 1987-12-31 | 夏翼翔 | Double-probe test pencil with the function of determining power phase sequence |
| JP2000171508A (en) * | 1998-12-02 | 2000-06-23 | Meidensha Corp | Method for detecting break in distribution line |
| CN2692682Y (en) * | 2003-08-07 | 2005-04-13 | 西安福润德电子科技有限公司 | Portable high-voltage phase sequence measurer |
| CN201138359Y (en) * | 2007-12-27 | 2008-10-22 | 栾浩东 | Non-contact type phase sequence detector circuit |
| CN202502167U (en) * | 2012-03-20 | 2012-10-24 | 上海市电力公司 | Low-voltage nuclear phase instrument |
| CN202512158U (en) * | 2012-04-02 | 2012-10-31 | 武陟县电业总公司 | Detection rod with adjustable spark gap |
| CN102854405A (en) * | 2012-09-14 | 2013-01-02 | 中国一冶集团有限公司 | Safe and efficient high-voltage nuclear phasing method |
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2013
- 2013-12-06 CN CN201310658872.2A patent/CN104698293B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87200670U (en) * | 1987-01-20 | 1987-12-31 | 夏翼翔 | Double-probe test pencil with the function of determining power phase sequence |
| JP2000171508A (en) * | 1998-12-02 | 2000-06-23 | Meidensha Corp | Method for detecting break in distribution line |
| CN2692682Y (en) * | 2003-08-07 | 2005-04-13 | 西安福润德电子科技有限公司 | Portable high-voltage phase sequence measurer |
| CN201138359Y (en) * | 2007-12-27 | 2008-10-22 | 栾浩东 | Non-contact type phase sequence detector circuit |
| CN202502167U (en) * | 2012-03-20 | 2012-10-24 | 上海市电力公司 | Low-voltage nuclear phase instrument |
| CN202512158U (en) * | 2012-04-02 | 2012-10-31 | 武陟县电业总公司 | Detection rod with adjustable spark gap |
| CN102854405A (en) * | 2012-09-14 | 2013-01-02 | 中国一冶集团有限公司 | Safe and efficient high-voltage nuclear phasing method |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106324373A (en) * | 2016-11-28 | 2017-01-11 | 国网山东省电力公司济宁供电公司 | Handhold phase sequence detecting device and phase sequence detecting system |
| CN107607771A (en) * | 2017-08-31 | 2018-01-19 | 合保电气（芜湖）有限公司 | Insulator charged detection instrument |
| CN109540249A (en) * | 2018-12-27 | 2019-03-29 | 佛山科学技术学院 | A kind of clearance adjustment mechanism of detection probe |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104698293B (en) | 2018-11-16 |
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