CN205450128U - Low pressure three -phase phase sequence table - Google Patents

Low pressure three -phase phase sequence table Download PDF

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Publication number
CN205450128U
CN205450128U CN201620146127.9U CN201620146127U CN205450128U CN 205450128 U CN205450128 U CN 205450128U CN 201620146127 U CN201620146127 U CN 201620146127U CN 205450128 U CN205450128 U CN 205450128U
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China
Prior art keywords
phase
test side
connects
resistance
phase test
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Withdrawn - After Issue
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CN201620146127.9U
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Chinese (zh)
Inventor
杨嘉骏
支玉清
屈志坚
刘烨
黄昊坤
陆示赟
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State Grid Shanghai Electric Power Co Ltd
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State Grid Shanghai Electric Power Co Ltd
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Priority to CN201620146127.9U priority Critical patent/CN205450128U/en
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Abstract

The utility model discloses an electric wire netting detection area's a low pressure three -phase phase sequence table, including phase sequence table body, be equipped with A looks sense terminal, B looks sense terminal and C looks sense terminal on the phase sequence table body, a looks sense terminal B looks sense terminal with all be equipped with adsorbable a correspondence on the position in storehouse is qualified for the next round of competitions on the C looks sense terminal, and can make correspond the position in storehouse be qualified for the next round of competitions with the magnetism electric conductor that phase sequence table body switched on. Its technological effect is: its operation that makes low pressure three -phase phase sequence table is simplified greatly, makes single completion phase sequence detection work for probably, has saved the human cost.

Description

A kind of low voltage three-phase phase-sequence meter
Technical field
This utility model relates to a kind of low voltage three-phase phase-sequence meter of electrical network detection field.
Background technology
Phase sequence detection is intelligent grid for the operating recurrent item of electricity consumption, be also avoid some special electromechanical equipments because power phase is made mistakes or phase shortage and cause accident to occur or the Reliable guarantee of device damage.Phase sequence detection is the most all to use phase detector circuit to complete at present, its poor-performing.The binding post of three-phase wire need to be pushed aside by the most traditional Phase sequence detection, the three of phase-sequence meter exposed alligator clamp or testing needle are connected on the live wire of exposed 3, thus on-the-spot test gets up to be inconvenient for, what is more important tester has the danger of contact high pressure, therefore, the phase-sequence meter developing a kind of safety high, easy to operate, reliable and stable is the most necessary.
Utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art, it is provided that a kind of low voltage three-phase phase-sequence meter, and it makes the operation of low voltage three-phase phase-sequence meter be greatly simplified, and makes single to complete Phase sequence detection work and become possibility, saves human cost.
A kind of technical scheme realizing above-mentioned purpose is: a kind of low voltage three-phase phase-sequence meter, including phase-sequence meter body, described phase-sequence meter body is provided with A phase test side, B phase test side and C phase test side;
It is equipped with one piece on described A phase test side, described B phase test side and described C phase test side to can be adsorbed in corresponding position in storehouse outlet, and the magnetic conductive body of described corresponding position in storehouse outlet and the conducting of described phase-sequence meter body can be made.
Further, described magnetic conductive body is neodium magnet.
Further, described phase-sequence meter body includes:
The first diode D1, the first resistance R1 and the first testing circuit being sequentially connected in series between described A phase test side with described C phase test side, the positive pole of described first diode D1 connects described A phase test side, negative pole connects the first end of described first resistance R1, and the second end of described first resistance R1 connects described first testing circuit;
Described first testing circuit includes the first branch road parallel with one another and the second branch road, described first branch road includes the first light emitting diode and the first nmos switch pipe being sequentially connected in series, the positive pole of described first light emitting diode connects the second end making described first resistance, negative pole connects the drain electrode of described first nmos switch pipe, and the source electrode of described first nmos switch pipe connects described C phase test side;
Described second branch road includes the first detection diode and the first detection resistance being sequentially connected in series, the negative pole of described first detection diode connects the second end of described first resistance R1, positive pole connects the first end of described first detection resistance, and the second end of described first detection resistance connects described C phase test side;
The second diode D2, the second resistance R2 and the second testing circuit being sequentially connected in series between described B phase test side with described C phase test side, the positive pole of described second diode D2 connects described B phase test side, negative pole connects the first end of described second resistance R2, and the second end of described second resistance R2 connects described second testing circuit;
Described second testing circuit includes the 3rd branch road parallel with one another and the 4th branch road, described 3rd branch road includes the second light emitting diode and the second nmos switch pipe being sequentially connected in series, the positive pole of described second light emitting diode connects the second end of described second resistance R2, negative pole connects the drain electrode of described second nmos switch pipe, and the source electrode of described second nmos switch pipe connects described C phase test side;
Described 4th branch road includes the second detection diode and the second detection resistance being sequentially connected in series;The negative pole of described second detection diode connects the second end of described second resistance R2, and positive pole connects the first end of described second detection resistance, and the second end of described second detection resistance connects described C phase test side;
The base stage of described first nmos switch pipe connects the positive pole of described second detection diode, and the base stage of described second nmos switch pipe connects the positive pole of described first detection diode.
Further, the glow color of described first light emitting diode and described second light emitting diode is different.
Further, described first light emitting diode green light, described second light emitting diode glows.
Further, the A phase test side of described phase-sequence meter body, B phase test side and C phase test side being equipped with a contact rod, described magnetic conductive body is fixed on the free end of described contact rod by soldering.
Further, the resistance value of described first resistance R1 and described second resistance R2 is 330k Ω, and the resistance value of described first detection resistance and described second detection resistance is 47k Ω.
Have employed the technical scheme of a kind of low voltage three-phase phase-sequence meter of the present utility model, including phase-sequence meter body, described phase-sequence meter body is provided with A phase test side, B phase test side and C phase test side;It is equipped with one piece on described A phase test side, described B phase test side and described C phase test side to can be adsorbed in corresponding position in storehouse outlet, and the magnetic conductive body of described corresponding position in storehouse outlet and the conducting of described phase-sequence meter body can be made.It has the technical effect that it makes the operation of low voltage three-phase phase-sequence meter be greatly simplified, make single complete Phase sequence detection work become possibility, save human cost.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of low voltage three-phase phase-sequence meter of the present utility model.
Fig. 2 is the structural representation of the phase-sequence meter body of a kind of low voltage three-phase phase-sequence meter of the present utility model.
Detailed description of the invention
Referring to Fig. 1, inventor of the present utility model is in order to enable preferably to understand the technical solution of the utility model, below by specifically embodiment, and combines accompanying drawing and is described in detail:
Referring to Fig. 1, a kind of low voltage three-phase phase-sequence meter of the present utility model includes that phase-sequence meter body 1, phase-sequence meter body 1 include A phase test side, B phase test side and C phase test side.
The first diode D1, the first resistance R1 and the first testing circuit 11 being sequentially connected in series it is provided with between A phase test side with C phase test side.Wherein the positive pole of the first diode D1 connects A phase test side, and the negative pole of the first diode D1 connects the first end of the first resistance R1, is connected the first testing circuit 11 between the second end of the first resistance R1 with C phase test side.
The second diode D2, the second resistance R2 and the second testing circuit 12 being sequentially connected in series it is provided with between B phase test side with C phase test side.Wherein the positive pole of the second diode D2 connects B phase test side, and the negative pole of the second diode D2 connects the first end of the second resistance R2, is connected the second testing circuit 12 between the second end of the second resistance R2 with C phase test side.
First testing circuit 11 includes the first branch road parallel with one another and the second branch road, first branch road includes the first light emitting diode 111 and the first nmos switch pipe 112 being sequentially connected in series, wherein, the positive pole of the first light emitting diode 111 connects the second end of the first resistance R1, the negative pole of the first light emitting diode 111 connects the drain electrode of the first nmos switch pipe 112, and the source electrode of the first nmos switch pipe 112 connects C phase test side.Second branch road includes the first detection diode 113 and the first detection resistance 114 being sequentially connected in series.The negative pole of the first detection diode 113 connects the second end of the first resistance R1, and the positive pole of the first detection diode 113 connects the first end of the first detection resistance 114, and the second end of the first detection resistance 114 connects C phase test side.
Second testing circuit 12 includes the 3rd branch road parallel with one another and the 4th branch road, 3rd branch road includes the second light emitting diode 121 and the second nmos switch pipe 122 being sequentially connected in series, wherein, the positive pole of the second light emitting diode 121 connects the second end of the second resistance R2, the negative pole of the second light emitting diode 121 connects the drain electrode of the second nmos switch pipe 122, and the source electrode of the second nmos switch pipe 122 connects C phase test side.4th branch road includes the second detection diode 123 and the second detection resistance 124 being sequentially connected in series.The negative pole of the second detection diode 123 connects the second end of the second resistance R2, and the positive pole of the second detection diode 123 connects the first end of the second detection resistance 124, and the second end of the second detection resistance 124 connects C phase test side.
The base stage of the first nmos switch pipe 112 connects the positive pole of the second detection diode 123, and the base stage of the second nmos switch pipe 122 connects the positive pole of the first detection diode 113.
On A phase test side, B phase test side and C phase test side, there is a neodium magnet 3 each connection.Owing to neodium magnet 3 is electrically conductive, and volume is little, light weight, and magnetic flux is big, therefore can adsorb in corresponding position in storehouse outlet, i.e. on live wire, and makes the position in storehouse outlet of correspondence turn on phase-sequence meter body 1, makes phase-sequence meter body 1 complete Phase sequence detection work.
Can be adsorbed in corresponding position in storehouse outlet by respectively increasing by one piece in the A phase test side of phase-sequence meter body 1, B phase test side and C phase test side, and the magnetic conductive body of corresponding position in storehouse outlet and the conducting of described phase-sequence meter body 1 can be made, make single complete Phase sequence detection work become possibility, save human cost so that the operation of low voltage three-phase phase-sequence meter is greatly simplified.
When phase sequence is positive phase sequence, the first light emitting diode 112 is luminous, and when phase sequence is negative phase sequence, the second light emitting diode 122 is luminous, and when phase shortage, the first light emitting diode 112 and the second light emitting diode 122 are the most luminous.In order to distinguish positive phase sequence and negative phase sequence, the glow color of the first light emitting diode 112 and the second light emitting diode 122 is different, wherein the first light emitting diode 112 green light, and the second light emitting diode 122 glows.
In the present embodiment, the resistance value of the first resistance R1 and the second resistance R2 is 330k Ω, and the resistance value of the first detection resistance 114 and the second detection resistance 124 is 47k Ω.
In the present embodiment, the A phase test side of phase-sequence meter body 1, B phase test side and C phase test side are equipped with a contact rod 31, and neodium magnet 3 is fixed on the free end of contact rod 3 by soldering.
Those of ordinary skill in the art will be appreciated that, above embodiment is intended merely to this utility model is described, and it is not used as to restriction of the present utility model, as long as in spirit of the present utility model, change, the modification of embodiment described above all will be fallen in Claims scope of the present utility model.

Claims (6)

1. a low voltage three-phase phase-sequence meter, including phase-sequence meter body, described phase-sequence meter body is provided with A phase test side, B phase test side and C phase test side;It is characterized in that:
It is equipped with one piece on described A phase test side, described B phase test side and described C phase test side to can be adsorbed in corresponding position in storehouse outlet, and the magnetic conductive body of described corresponding position in storehouse outlet and the conducting of described phase-sequence meter body can be made.
A kind of low voltage three-phase phase-sequence meter the most according to claim 1, it is characterised in that: described magnetic conductive body is neodium magnet.
A kind of low voltage three-phase phase-sequence meter the most according to claim 1 and 2, it is characterised in that: described phase-sequence meter body includes:
The first diode D1, the first resistance R1 and the first testing circuit being sequentially connected in series between described A phase test side with described C phase test side, the positive pole of described first diode D1 connects described A phase test side, negative pole connects the first end of described first resistance R1, and the second end of described first resistance R1 connects described first testing circuit;
Described first testing circuit includes the first branch road parallel with one another and the second branch road, described first branch road includes the first light emitting diode and the first nmos switch pipe being sequentially connected in series, the positive pole of described first light emitting diode connects the second end making described first resistance, negative pole connects the drain electrode of described first nmos switch pipe, and the source electrode of described first nmos switch pipe connects described C phase test side;
Described second branch road includes the first detection diode and the first detection resistance being sequentially connected in series, the negative pole of described first detection diode connects the second end of described first resistance R1, positive pole connects the first end of described first detection resistance, and the second end of described first detection resistance connects described C phase test side;
The second diode D2, the second resistance R2 and the second testing circuit being sequentially connected in series between described B phase test side with described C phase test side, the positive pole of described second diode D2 connects described B phase test side, negative pole connects the first end of described second resistance R2, and the second end of described second resistance R2 connects described second testing circuit;
Described second testing circuit includes the 3rd branch road parallel with one another and the 4th branch road, described 3rd branch road includes the second light emitting diode and the second nmos switch pipe being sequentially connected in series, the positive pole of described second light emitting diode connects the second end of described second resistance R2, negative pole connects the drain electrode of described second nmos switch pipe, and the source electrode of described second nmos switch pipe connects described C phase test side;
Described 4th branch road includes the second detection diode and the second detection resistance being sequentially connected in series;The negative pole of described second detection diode connects the second end of described second resistance R2, and positive pole connects the first end of described second detection resistance, and the second end of described second detection resistance connects described C phase test side;
The base stage of described first nmos switch pipe connects the positive pole of described second detection diode, and the base stage of described second nmos switch pipe connects the positive pole of described first detection diode.
A kind of low voltage three-phase phase-sequence meter the most according to claim 3, it is characterised in that: the glow color of described first light emitting diode and described second light emitting diode is different.
A kind of low voltage three-phase phase-sequence meter the most according to claim 4, it is characterised in that: described first light emitting diode green light, described second light emitting diode glows.
A kind of low voltage three-phase phase-sequence meter the most according to claim 1, it is characterized in that: be equipped with a contact rod on the A phase test side of described phase-sequence meter body, B phase test side and C phase test side, described magnetic conductive body is fixed on the free end of described contact rod by soldering.
CN201620146127.9U 2016-02-26 2016-02-26 Low pressure three -phase phase sequence table Withdrawn - After Issue CN205450128U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201620146127.9U CN205450128U (en) 2016-02-26 2016-02-26 Low pressure three -phase phase sequence table

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201620146127.9U CN205450128U (en) 2016-02-26 2016-02-26 Low pressure three -phase phase sequence table

Publications (1)

Publication Number Publication Date
CN205450128U true CN205450128U (en) 2016-08-10

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Application Number Title Priority Date Filing Date
CN201620146127.9U Withdrawn - After Issue CN205450128U (en) 2016-02-26 2016-02-26 Low pressure three -phase phase sequence table

Country Status (1)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105548731A (en) * 2016-02-26 2016-05-04 国网上海市电力公司 Low-voltage and three-phase phase-sequence meter

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105548731A (en) * 2016-02-26 2016-05-04 国网上海市电力公司 Low-voltage and three-phase phase-sequence meter
CN105548731B (en) * 2016-02-26 2018-07-13 国网上海市电力公司 A kind of low voltage three-phase phase-sequence meter

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AV01 Patent right actively abandoned

Granted publication date: 20160810

Effective date of abandoning: 20180713

AV01 Patent right actively abandoned