CN87200470U - Turns detector for cored winding - Google Patents
Turns detector for cored winding Download PDFInfo
- Publication number
- CN87200470U CN87200470U CN 87200470 CN87200470U CN87200470U CN 87200470 U CN87200470 U CN 87200470U CN 87200470 CN87200470 CN 87200470 CN 87200470 U CN87200470 U CN 87200470U CN 87200470 U CN87200470 U CN 87200470U
- Authority
- CN
- China
- Prior art keywords
- winding
- circles
- unshakable
- determination
- turn
- 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 - Lifetime
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Abstract
The utility model discloses a determinator measuring the turn number of windings wound on the iron-core of a close circuit, comprising a passive comparator, a measurement difference compensator and the electric source of a stepping transtat. When the measured turn number of windings is 1-11110 turns, 1-100 turns of windings in known turn number are added; two windings and the iron-core compose a current transformer. The determinator makes use of the theory for measuring the errors of the current transformer, has the accuracy of measured windings turn number as high as 0.1%-0.01%. Namely, the general measured turn number can be 100% accurate.
Description
The utility model is the analyzer about closed circuit umber of turn unshakable in one's determination.
At present the coil turn analyzer of producing all is the number of turn that the principle of utilizing error of measurement to press is measured air core coil, and it surveys circle accuracy is 0.5%～0.1%.The mensuration of umber of turn unshakable in one's determination is introduced as " electrical measurement and instrument " magazine o. 11th in 1981: increase the winding around the corresponding known number of turn on winding unshakable in one's determination, make tested current transformer that current ratio is identical with standard current transformer of two windings and composition unshakable in one's determination, utilize the principle of surveying current transformer error to determine the number of turn of tested winding.But because the current ratio of standard current transformer is limited, many tested windings are difficult to form the tested current transformer of corresponding current ratio, and the restriction of the error of the accuracy of measuring the number of turn when also being subjected to the standard current transformer actual motion.
The purpose of this utility model is in order to overcome above-mentioned shortcoming, provide a kind of standard mutual inductor that can obtain current ratio K any current ratio in 5/0.5≤K≤5/0.045 scope, the passive comparator and a kind of umber of turn analyzer unshakable in one's determination that can measure 1～11110 circle that promptly have fractional turns.
A kind of passive comparator that is used for umber of turn analyzer unshakable in one's determination of the present utility model, said umber of turn analyzer unshakable in one's determination comprises passive comparator, error of measurement compensator and stepping transtat power supply, be wiring diagram of the present utility model shown in the accompanying drawing, it is characterized in that said passive comparator I is by unshakable in one's determination 1 and 2 and a winding W on unshakable in one's determination 1
1, Secondary Winding W
2, compensation winding W
B, nulling winding Wu, contact winding W
21With the fractional turns winding W on iron core 2
22Form.W wherein
1=1 circle, W
2=1～110 circles composition * 10 and * 1 two decade dish, W
BFor self-coupling type has 1,10 and 100 circles three taps, i.e. d
1, d
2, d
3Three taps, corresponding to the measurement current transformer error, reading * 0.1, * 1 and * 10 three amount limits, the reading of ratio and angular difference is ± 0.001～11%, Wu connects zero indicator, and the number of turn is by the sensitivity decision of zero indicator, W
21=1 circle is connected on W
22100 circles on, W
22=1～110 circles, composition * 0.1 and * 0.01 two decade dish.
A kind of umber of turn analyzer unshakable in one's determination includes passive comparator, error of measurement compensator and stepping transtat power supply, it is characterized in that said passive comparator as previously mentioned.
The error of measurement compensator be in the comparator error of measurement circuit II by 0.1 Ω resistance γ and 0.5/0.5,1.59V voltage transformer (VT) and (0～10) (1+0.1) mS electricity guide box G and (0～10) (1+0.1) μ F capacitive C form.Reading f=± K(0～10 of homophase dish ratio difference) (0.1+0.01) %, the reading δ of quadrature dish phase differential=± K(0～10) (0.1+0.01) (%) radian, wherein K=0.1,1 or 10 is an amount limit switching coefficient.
Stepping transtat power supply III is made up of 220/0.7～50V stepping transtat and 0.5/5A self-coupling type current transformer, regulates transformer output voltage 0.7～50V by K switch s.
During work, earlier at the winding closed circuit unshakable in one's determination of 10～10000 tested circles (as tested winding less than 10 circles, can add around to 10 circles) on add winding around the known number of turn of 1～100 circle, two windings and current transformer that current ratio is K of composition unshakable in one's determination, 5/0.5≤K≤5/0.045 is then with tested winding W
XBe connected on K
1K
2Terminal, add around known number of turn winding n meet L
1L
2Terminal, L
1And K
1Should be end of the same name, when n=1,2,5,10,20,50 or 100 circles, the reading n of four dishes of passive comparator
0=* *. * * multiply by n, i.e. n n
0Should equal or near W
X
During energising, Ks is at a
1Polarity is observed in the position, and correct back Ks transfers to a
2The position is whenever advanced one later on, and electric current increases 60% approximately, gets final product work when electric current is 3～5A.
Utilize passive comparator to survey the principle of current transformer error, regulate n
0(n n
0Should be positive integer), when allowing the zero indicator nulling, f is a negative value, δ be on the occasion of, and | f|＜δ can record W
X=nn
0, can guarantee that the tested number of turn one circle is pretty good.
Accompanying drawing is the embodiment of umber of turn analyzer unshakable in one's determination of the present utility model.
Passive comparator:
Winding W
u≈ 350 circles use φ 0.33 lead all around one deck.
Winding W
1=1 circle, i.e. winding L
1K
1With the lead of 9 φ 0.51 evenly and around one deck.
Winding W
2=1～110 circles, i.e. winding A
0A
1, A
1A
2, A
2A
3, A
3A
4, A
4A
5, A
5A
6, A
6A
7, A
7A
8, A
8A
9And A
9A
10All use φ 1.25 leads all around 10 circles.
Winding B
0B
1, B
1B
2, B
2B
3, B
3B
4, B
4B
5, B
5B
6, B
6B
7, B
7B
8, B
8B
9And B
9B
10The lead of all using 4 φ 1.04 is evenly and around 1 circle.
Winding W
BFor self-coupling type has 1,10 and 100 circles three taps, i.e. d
1, d
2, d
3Three taps.
Winding Kd
1With the lead of 9 φ 0.51 all around 1 circle.
Winding d
1d
2With the lead of 4 φ 0.51 all around 9 circles.
Winding d
2d
3With the lead of φ 0.55 all around 90 circles.
Winding W
21=1 circle, with the lead of 4 φ 1.04 evenly and around 1 circle.
Winding W
22=1～110 circles, i.e. winding C
0C
1, C
1C
2, C
2C
3, C
3C
4, C
4C
5, C
5C
6, C
6C
7, C
7C
8, C
8C
9And C
9C
10The lead of all using φ 1.25 is all around 10 circles.
Winding D
0D
1, D
1D
2, D
2D
3, D
3D
4, D
4D
5, D
5D
6, D
6D
7, D
7D
8, D
8D
9And D
9D
10The lead of all using two φ 1.25 is evenly and around 1 circle.
The error of measurement compensator is the comparator measuring circuit:
T unshakable in one's determination
bBe of a size of φ 35/ φ 45 * 50, material is the 1J80 iron-nickel alloy.
Winding L
2L uses the lead of φ 1.56 all around 50 circles.
Winding G
1G
2With the lead of two φ 0.69 all around 50 circles.
Winding C
1C
2With the lead of φ 0.69 all around 159 circles.
γ＝0.1Ω。
Adjustable electric lead G for (0～10) (0.1+0.01) * 10
-3(S).
Tunable capacitor C be (0～10) (0.1+0.01) * 1(μ F).
The current constant of zero indicator D is 1 * 10
-8The A/ lattice
Stepping transtat power supply:
Unshakable in one's determination 3 and 4 size is φ 40/ φ 60 * 25, and material is the D340 cold-reduced silicon sheet.
Winding Ax uses the lead of φ 0.21 all around 3300 circles, 3 layers of insulation, polyesters.
Winding a
0a
110 circles, a
1a
270 circles, a
2a
350 circles, a
3a
480 circles, a
4a
5130 circles, a
5a
6200 circles, a
6a
7210 circles are all used the even coiling of lead of φ 0.51.
Winding a
0L uses the lead of φ 0.51 all around 600 circles.
Winding L LK uses the lead of φ 1.56 all around 66 circles.
Claims (2)
1, a kind of umber of turn analyzer unshakable in one's determination includes passive comparator, error of measurement compensator and stepping transtat power supply, it is characterized in that described passive comparator I is by unshakable in one's determination 1 and 2 and a winding W on unshakable in one's determination 1
1, Secondary Winding W
2, compensation winding W
3, nulling winding Wu, contact winding W
21With the fractional turns winding W on iron core 2
22Form.
2, umber of turn analyzer unshakable in one's determination according to claim 1 is characterized in that among the described passive comparator I W
1=1 circle, W
2=1-110 circle composition * 10 and * 1 two decade dish, W
BBe self-coupling type, three taps of 1,10 and 100 circles are arranged, corresponding to the measurement current transformer error, reading * 0.1, * 1 and * 10 three amount limits, the reading of ratio and angular difference is ± 0.001～11%, Wu connects zero indicator, and the number of turn is by the sensitivity decision of zero indicator, W
21=1 circle is connected on W
22100 circles on, W
22=1～110 circles, composition * 0.1 advances dish with * 0.01 two ten.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87200470 CN87200470U (en) | 1987-01-13 | 1987-01-13 | Turns detector for cored winding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87200470 CN87200470U (en) | 1987-01-13 | 1987-01-13 | Turns detector for cored winding |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN87200470U true CN87200470U (en) | 1987-12-30 |
Family
ID=4816890
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 87200470 Expired - Lifetime CN87200470U (en) | 1987-01-13 | 1987-01-13 | Turns detector for cored winding |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN87200470U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010130068A1 (en) * | 2009-05-13 | 2010-11-18 | 精进电动科技（北京）有限公司 | Apparatus and method for testing number of turns on coil |
| CN107544045A (en) * | 2016-06-24 | 2018-01-05 | 中国电力科学研究院 | A kind of system and method for being detected to self-correcting type current transformer error |
-
1987
- 1987-01-13 CN CN 87200470 patent/CN87200470U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010130068A1 (en) * | 2009-05-13 | 2010-11-18 | 精进电动科技（北京）有限公司 | Apparatus and method for testing number of turns on coil |
| US8653850B2 (en) | 2009-05-13 | 2014-02-18 | Jing-Jin Electric Technologies (Beijing) Co., Ltd. | Apparatus and method for testing number of turns on coil |
| CN107544045A (en) * | 2016-06-24 | 2018-01-05 | 中国电力科学研究院 | A kind of system and method for being detected to self-correcting type current transformer error |
| CN107544045B (en) * | 2016-06-24 | 2020-04-17 | 中国电力科学研究院 | System and method for detecting error of self-correcting current transformer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |