CN201465792U - Feed through micro-current transformer - Google Patents
Feed through micro-current transformer Download PDFInfo
- Publication number
- CN201465792U CN201465792U CN2009201209610U CN200920120961U CN201465792U CN 201465792 U CN201465792 U CN 201465792U CN 2009201209610 U CN2009201209610 U CN 2009201209610U CN 200920120961 U CN200920120961 U CN 200920120961U CN 201465792 U CN201465792 U CN 201465792U
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- Prior art keywords
- inductance coil
- current transformer
- iron core
- micro
- circuit
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- 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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- Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
Abstract
The utility model discloses a feed through micro-current transformer, which comprises an inductance coil I, an ultracrystalline iron core, an inductance coil II, a load resistor, a driving circuit and a sampling circuit. The inductance coil I and the inductance coil II are both sleeved on the ultracrystalline iron core, one pin of the inductance coil I is connected to the driving circuit through the load resistor, another pin of the inductance coil I is directly connected to the driving circuit, the driving circuit is connected with the sampling circuit through a conducting wire, and the sampling circuit is connected with two pins of the inductance coil II. The feed through micro-current transformer has the advantages that the micro-current transformer utilizes the ultracrystalline iron core, has relatively high largest inductance, relatively low loss and extremely fine mechanical characteristics and temperature stability, can induce current of hundreds of microamperes, utilizes an active circuit network to be directly connected with a secondary winding to form a self-adaptive dynamic adjusting loop, greatly increases measuring precision, simultaneously keep high stability and guarantee accurate phase.
Description
Technical field
The utility model relates to the punching current transformer that declines.
Background technology
At present, current sensor has polytype, as Hall element, no magnetic core current sensor, high magnetic conduction non-crystaline amorphous metal multi-harmonic-oscillations current sensor, electron spin resonance current sensor etc.But when being applied on the leakage current collection of lightning arrester, because when not having thunderbolt, leakage current is at the hundreds of microampere, and when being hit by thunder and lightning, can reach kiloampere, the hundreds of microampere electric current that the lightning arrester that is coupled leaks needs to guarantee that its phase place is accurate, and the general current transformer of sampling can't reach requirement.
The utility model content
The purpose of this utility model is to provide the punching current transformer that declines, and can effectively solve existing current transformer and can't guarantee its phase place problem accurately to the little current detecting of hundreds of microampere.
In order to solve the problems of the technologies described above, the utility model is achieved through the following technical solutions: the punching current transformer that declines, comprise inductance coil I, the ultracrystallite iron core, inductance coil II, load resistance, drive circuit, sample circuit, described inductance coil I and inductance coil II are set on the ultracrystallite iron core, the pin of inductance coil I is linked on the drive circuit by load resistance, another root pin of inductance coil I is directly linked on the drive circuit, drive circuit links to each other with sample circuit by lead, and sample circuit is connected with two pins of inductance coil II.
Further, the turn ratio of the number of turn of measured lead and inductance coil I is 1: 9000; Number of turn specific energy reaches the ratio of better effects.
Preferably, the turn ratio of the number of turn of measured lead and inductance coil I is 1: 1000; Best turn ratio.
Compared with prior art, the utility model has the advantages that: adopt the ultracrystallite iron core, have higher maximum induction amount, lower loss and extraordinary mechanical property and temperature stability, can be well to the induction of hundreds of microampere electric current; Adopt the active circuit network directly to link to each other, after the formation self adaptation is dynamically adjusted the loop, make the certainty of measurement of low current sensor that by a relatively large margin raising be arranged, keep high stability simultaneously, guarantee that its phase place is accurate with the secondary winding.
Description of drawings
The utility model is described in further detail below in conjunction with accompanying drawing:
Fig. 1 is the utility model punching current transformer structural representation that declines.
Embodiment
Consult Fig. 1 and be the decline embodiment of current transformer of the utility model punching, the punching current transformer that declines, comprise inductance coil I 1, ultracrystallite iron core 2, inductance coil II 3, load resistance 4, drive circuit 5, sample circuit 6, described inductance coil I 1 is set on the ultracrystallite iron core 2 with inductance coil II3, the pin of inductance coil I 1 is linked on the drive circuit 5 by load resistance 4, another root pin of inductance coil I 1 is directly linked on the drive circuit 5, drive circuit 5 links to each other with sample circuit 6 by lead, sample circuit 6 is connected with two pins of inductance coil II 3, and the turn ratio of the number of turn of described measured lead and inductance coil I 1 is 1: 1000.
When installing and using, only need make measured lead pass ultracrystallite iron core 2 centers and get final product.
The above only is a specific embodiment of the utility model, but architectural feature of the present utility model is not limited thereto, any those skilled in the art is in field of the present utility model, and variation of being done or modification all are encompassed among the claim of the present utility model.
Claims (3)
1. the punching current transformer that declines, comprise inductance coil I (1), it is characterized in that: also comprise ultracrystallite iron core (2), inductance coil II (3), load resistance (4), drive circuit (5), sample circuit (6), described inductance coil I (1) and inductance coil II (3) are set on the ultracrystallite iron core (2), the pin of inductance coil I (1) is linked on the drive circuit (5) by load resistance (4), another root pin of inductance coil I (1) is directly linked on the drive circuit (5), drive circuit (5) links to each other with sample circuit (6) by lead, and sample circuit (6) is connected with two pins of inductance coil II (3).
2. the punching as claimed in claim 1 current transformer that declines, it is characterized in that: the turn ratio of the number of turn of measured lead and inductance coil I (1) is 1: 9000.
3. the punching as claimed in claim 1 current transformer that declines, it is characterized in that: the turn ratio of the number of turn of described measured lead and inductance coil I (1) is 1: 1000.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201209610U CN201465792U (en) | 2009-06-01 | 2009-06-01 | Feed through micro-current transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201209610U CN201465792U (en) | 2009-06-01 | 2009-06-01 | Feed through micro-current transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201465792U true CN201465792U (en) | 2010-05-12 |
Family
ID=42393140
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201209610U Expired - Lifetime CN201465792U (en) | 2009-06-01 | 2009-06-01 | Feed through micro-current transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201465792U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102305920A (en) * | 2011-07-14 | 2012-01-04 | 浙江省电力公司 | Bus type current transformer one-time penetrating method |
| CN103105593A (en) * | 2013-02-04 | 2013-05-15 | 上海理工大学 | Novel cross-core type sensor |
| CN113466534A (en) * | 2021-09-06 | 2021-10-01 | 常州常荣传感技术有限公司 | Low-power-consumption intelligent current sensor and working mode control method thereof |
-
2009
- 2009-06-01 CN CN2009201209610U patent/CN201465792U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102305920A (en) * | 2011-07-14 | 2012-01-04 | 浙江省电力公司 | Bus type current transformer one-time penetrating method |
| CN103105593A (en) * | 2013-02-04 | 2013-05-15 | 上海理工大学 | Novel cross-core type sensor |
| CN103105593B (en) * | 2013-02-04 | 2015-02-11 | 上海理工大学 | Novel cross-core type sensor |
| CN113466534A (en) * | 2021-09-06 | 2021-10-01 | 常州常荣传感技术有限公司 | Low-power-consumption intelligent current sensor and working mode control method thereof |
| CN113466534B (en) * | 2021-09-06 | 2021-12-03 | 常州常荣传感技术有限公司 | Low-power-consumption intelligent current sensor and working mode control method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100512 |
|
| CX01 | Expiry of patent term |