CN205786955U - Motor turns to and CT polarity commissioning device - Google Patents
Motor turns to and CT polarity commissioning device Download PDFInfo
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- CN205786955U CN205786955U CN201620531765.2U CN201620531765U CN205786955U CN 205786955 U CN205786955 U CN 205786955U CN 201620531765 U CN201620531765 U CN 201620531765U CN 205786955 U CN205786955 U CN 205786955U
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Abstract
The utility model discloses a kind of motor to turn to and CT polarity commissioning device, it includes battery, milliammeter and slide rheostat, the positive pole of described battery connects one end of main switch by wire, the other end of main switch connects one end and one end of automatic reset switch of motor steering switch respectively, described motor steering switch is parallel with one another with automatic reset switch, the other end of motor steering switch connects line end as A, the other end of automatic reset switch is as positive terminals, the negative pole of described battery is divided into two-way by wire, the end on one tunnel is as negative terminals, another road connects the negative pole of described milliammeter and connects line end simultaneously as C, the positive pole of described milliammeter connects one end of described slide rheostat, the other end of slide rheostat connects line end as B.This utility model is done manual work simple, and low price is easy to operate, quick, can be effectively improved work efficiency；The problems such as connecting line is many, waste time and energy when efficiently solving commonsense method verification.
Description
Technical field
This utility model relates to threephase asynchronous phase sequence and the confirmation turned to, and current transformer polarity confirms；It is specially a kind of motor to turn to and CT polarity commissioning device.
Background technology
For threephase asynchronous and transformer phase sequence, the mensuration turned to, calibration equipment the most unified in construction at present, on-the-spot common practice is to add aneroid battery with circuit tester to carry out, the shortcoming of this method is that connecting line is the most, wiring easily make mistakes and circuit tester and aneroid battery inconvenient to carry, need more than 2 people just can complete during operation.
Summary of the invention
For the deficiency overcoming prior art to exist, this utility model provides a kind of motor and turns to and CT polarity commissioning device.
This utility model adopts the technical scheme that: a kind of motor turns to and CT polarity commissioning device, it includes battery, milliammeter and slide rheostat, the positive pole of described battery connects one end of main switch by wire, the other end of main switch connects one end and one end of automatic reset switch of motor steering switch respectively, described motor steering switch is parallel with one another with automatic reset switch, the other end of motor steering switch connects line end as A, the other end of automatic reset switch is as positive terminals, the negative pole of described battery is divided into two-way by wire, the end on one tunnel is as negative terminals, another road connects the negative pole of described milliammeter and connects line end simultaneously as C, the positive pole of described milliammeter connects one end of described slide rheostat, the other end of slide rheostat connects line end as B.
Described A connects line end and positive terminals link together, and both connection ends are provided with yellow test jack, and the described B line end that connects is provided with green test jack, and the C line end that connects is provided with red test jack, and negative terminals are provided with black test jack.
Described yellow test jack, green test jack, red test jack and black test jack are the female of 4mm.
The range of described milliammeter is-30～30mA.
The specification of described main switch is 20A 125V, and the specification of motor steering switch is 15A 250V.
The beneficial effects of the utility model are: do manual work simple, and low price is easy to operate, quick, can be effectively improved work efficiency；The problems such as connecting line is many, waste time and energy when efficiently solving commonsense method verification.It is simultaneously connected with line and only has 3, be yellow respectively, green, red, which decrease the error rate of wiring, the most time-consuming.
Accompanying drawing explanation
Fig. 1 is circuit structure schematic diagram of the present utility model.
Fig. 2 is CT polarity DC detection method schematic diagram.
In figure: 1-battery, 2-milliammeter, 3-slide rheostat, 4-main switch, 5-motor steering switchs, 6-automatic reset switch.
Detailed description of the invention
With specific embodiment, this utility model is described in detail below in conjunction with the accompanying drawings.
As shown in Figure 1, a kind of motor turns to and CT polarity commissioning device, it includes battery 1, milliammeter 2 and slide rheostat 3, the positive pole of described battery 1 connects one end of main switch 4 by wire, the other end of main switch 4 connects one end and one end of automatic reset switch 6 of motor steering switch 5 respectively, described motor steering switch 5 is parallel with one another with automatic reset switch 6, the other end of motor steering switch 5 connects line end as A, the other end of automatic reset switch 6 is as positive terminals, the negative pole of described battery 1 is divided into two-way by wire, the end on one tunnel is as negative terminals, another road connects the negative pole of described milliammeter 2 and connects line end simultaneously as C, the positive pole of described milliammeter 2 connects one end of described slide rheostat 3, the other end of slide rheostat 3 connects line end as B.
In this utility model, described A connects line end and positive terminals link together, and both connection ends are provided with yellow test jack, and the described B line end that connects is provided with green test jack, and the C line end that connects is provided with red test jack, and negative terminals are provided with black test jack；Wherein, described yellow test jack, green test jack, red test jack and black test jack are the female of 4mm.Additionally, the range of described milliammeter is-30～30mA.The specification of described main switch is 20A 125V, and the specification of motor steering switch is 15A 250V.
The determination methods turned to of motor is:
Judging turning to of motor according to direct current actinobolia, connect the anode A phase in Fig. 1, milliammeter positive pole B phase, battery and milliammeter negative pole C phase with one end of three of the wires respectively, the other end of wire terminal any with the three-phase in motor is connected.According to load request rotary electric machine direction, if milliammeter is inclined clockwise, illustrate that motor steering is that just motor phase sequence is respectively A, B, C.If milliammeter is inclined counterclockwise, represents that motor steering is anti-, reselect motor terminal and test, until milliammeter is the most inclined.
Owing to the difference of capacity motor can cause milliammeter throw of pointer big or deflects little, can use adjustment slide rheostat to change the size of throw of pointer, to ensure that measurement result is more accurate.
The operating procedure of CT polarity test is:
As in figure 2 it is shown, when measuring CT, current transformer primary side current flows into from P1, flow out from P2.Now measure secondary side current to flow into from S1, flow out from S2.This kind of connection, should be defined as additive polarity.Current transformer primary side current flows into from P2, flows out from P1.Now measure secondary side current to flow into from S1, flow out from S2.This kind of connection, should be defined as subtractive polarity.
In primary side current P1 inflow access Fig. 1+(yellow) test jack, it is-(black) test jack that primary side current flows out access Fig. 1 from P2.Secondary side current flows into, from S1, B phase (green) test jack accessed Fig. 1, and secondary side current flows out, from S2, C phase (red) test jack accessed Fig. 1.Press automatic reset switch, ammeter positively biased, be expressed as additive polarity.
Primary side current P2 flow in Fig. 1+(yellow) test jack, primary side current flow out from P1 access Fig. 1-(black) test jack.Secondary side current flows into, from S1, B phase (green) test jack accessed Fig. 1, and secondary side current flows out, from S2, C phase (red) test jack accessed Fig. 1.Press automatic reset switch, ammeter positively biased, be expressed as subtractive polarity.
Of the present utility model ultimate principle, principal character and advantage have more than been shown and described.Those of ordinary skill in the art's technical scheme that mode obtained it should be appreciated that above-described embodiment limits protection domain of the present utility model the most in any form, all employing equivalents etc., all falls within protection domain of the present utility model.
This utility model is not directed to part and the most same as the prior art prior art maybe can be used to be realized.
Claims (5)
1. a motor turns to and CT polarity commissioning device, it is characterized in that: include battery, milliammeter and slide rheostat, the positive pole of described battery connects one end of main switch by wire, the other end of main switch connects one end and one end of automatic reset switch of motor steering switch respectively, described motor steering switch is parallel with one another with automatic reset switch, the other end of motor steering switch connects line end as A, the other end of automatic reset switch is as positive terminals, the negative pole of described battery is divided into two-way by wire, the end on one tunnel is as negative terminals, another road connects the negative pole of described milliammeter and connects line end simultaneously as C, the positive pole of described milliammeter connects one end of described slide rheostat, the other end of slide rheostat connects line end as B.
A kind of motor the most according to claim 1 turns to and CT polarity commissioning device, it is characterized in that: described A connects line end and positive terminals link together, both connection ends are provided with yellow test jack, the described B line end that connects is provided with green test jack, the C line end that connects is provided with red test jack, and negative terminals are provided with black test jack.
A kind of motor the most according to claim 2 turns to and CT polarity commissioning device, it is characterised in that: described yellow test jack, green test jack, red test jack and black test jack are the female of 4mm.
A kind of motor the most according to claim 1 turns to and CT polarity commissioning device, it is characterised in that: the range of described milliammeter is-30～30mA.
A kind of motor the most according to claim 1 turns to and CT polarity commissioning device, it is characterised in that: the specification of described main switch is 20A 125V, and the specification of motor steering switch is 15A 250V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620531765.2U CN205786955U (en) | 2016-06-01 | 2016-06-01 | Motor turns to and CT polarity commissioning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620531765.2U CN205786955U (en) | 2016-06-01 | 2016-06-01 | Motor turns to and CT polarity commissioning device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205786955U true CN205786955U (en) | 2016-12-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620531765.2U Active CN205786955U (en) | 2016-06-01 | 2016-06-01 | Motor turns to and CT polarity commissioning device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205786955U (en) |
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2016
- 2016-06-01 CN CN201620531765.2U patent/CN205786955U/en active Active
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