CN101266878A - Current mutual inductor with shunt resistor - Google Patents
Current mutual inductor with shunt resistor Download PDFInfo
- Publication number
- CN101266878A CN101266878A CNA2008100592969A CN200810059296A CN101266878A CN 101266878 A CN101266878 A CN 101266878A CN A2008100592969 A CNA2008100592969 A CN A2008100592969A CN 200810059296 A CN200810059296 A CN 200810059296A CN 101266878 A CN101266878 A CN 101266878A
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- CN
- China
- Prior art keywords
- current transformer
- shunt resistance
- instrument transformer
- current instrument
- conductor
- 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.)
- Pending
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- 239000004020 conductor Substances 0.000 claims abstract description 37
- 239000000463 material Substances 0.000 claims description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 4
- 239000010949 copper Substances 0.000 claims description 4
- 229910052802 copper Inorganic materials 0.000 claims description 4
- HPDFFVBPXCTEDN-UHFFFAOYSA-N copper manganese Chemical group [Mn].[Cu] HPDFFVBPXCTEDN-UHFFFAOYSA-N 0.000 claims description 3
- 229910001369 Brass Inorganic materials 0.000 claims description 2
- 229910001006 Constantan Inorganic materials 0.000 claims description 2
- 239000010951 brass Substances 0.000 claims description 2
- 238000003466 welding Methods 0.000 claims description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 238000004804 winding Methods 0.000 abstract 1
- 238000005259 measurement Methods 0.000 description 3
- 230000007812 deficiency Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
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- Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
- Transformers For Measuring Instruments (AREA)
Abstract
The invention discloses a current instrument transformer provided with a shunt resistance and used on an electric energy meter, belonging to a device for measuring the current. The objective is to provide a current instrument transformer with strong capacity of resisting disturbance, small volume, low cost and separated input and output. The current instrument transformer comprises connecting conductors, the shunt resistance, the current instrument transformer, a primary conductor of the current instrument transformer; the two connecting conductors are fixedly interconnected as a whole through the shunt resistance; two ends of the primary conductor of the current instrument transformer are respectively connected with a connection conductor, the primary conductor of the current instrument transformer traverses the current instrument transformer; the current instrument transformer is composed of windings with iron cores or magnetic cores. The invention has the characteristics of reliable clamping, convenience in operation, safety in working, and meanwhile, the invention does not need much artificial intervention in the process of testing.
Description
Technical field
The present invention relates to the current transformer of the band shunt resistance that uses on a kind of electric energy meter, belong to the device of measuring electric current.
Background technology
Existing technology is used two class devices when current measurement: a class is the shunt of pure resistance.Another kind of is the instrument transformer of ribbon core coil or air core coil.The pure resistance measuring element exists current circuit and the electric problem that can not isolate of measuring unit, poor stability, antijamming capability weakness.And belt coil because Super-Current Measurement needs the current transformer of large volume, and there is the saturated problem in magnetic field in instrument transformer, therefore caused the problem that volume is big, product cost is also high of product.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, provide that a kind of input and output are isolated, antijamming capability is strong, small size, current transformer cheaply.
The current transformer of band shunt resistance of the present invention comprises bonding conductor, shunt resistance, current transformer, current transformer Primary Conductor; Described bonding conductor is two, and bonding conductor is connected and fixed by shunt resistance and is integral; Described current transformer Primary Conductor two ends are connected with a bonding conductor respectively; Described current transformer Primary Conductor is passed described current transformer; Described current transformer is that the coil of ribbon core coil or magnetic core is formed.
It can be fixedly connected that described current transformer Primary Conductor is connected with shunt resistance, as welding.
Described shunt resistance, current transformer Primary Conductor can adopt the conductor of high stable resistance, as copper-manganese, constantan etc.Bonding conductor can adopt low electrical resistant material, such as red copper or brass material.
Because the current transformer of this band shunt resistance enters the electric current of bonding conductor and distributed a part by shunt resistance when current measurement, thereby the electric current on the current transformer Primary Conductor is just little, the current transformer volume can be little.
Have characteristics such as simple in structure, stable performance, cost be low according to the current transformer of above-described band shunt resistance.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Embodiment
In Fig. 1, current transformer comprises bonding conductor 1, shunt resistance 2, current transformer 3, current transformer Primary Conductor 4; Described bonding conductor 1 is two copper sheets, and these two copper sheets are connected and fixed by shunt resistance 2 and are integral, and shunt resistance 2 is copper-manganese sheets; Described current transformer Primary Conductor 4 is " U " type, and its two ends are connected with a bonding conductor 1 respectively; Described current transformer Primary Conductor 4 is passed described current transformer 3; Described current transformer 3 is that the ribbon core coil is formed.
Claims (6)
1, a kind of current transformer with shunt resistance comprises current transformer, and described current transformer is that the coil of ribbon core coil or magnetic core is formed; It is characterized in that: also comprise bonding conductor, shunt resistance, current transformer Primary Conductor; Described bonding conductor is two, and bonding conductor is connected and fixed by shunt resistance and is integral; Described current transformer Primary Conductor two ends are connected with a bonding conductor respectively; Described current transformer Primary Conductor is passed described current transformer.
2, a kind of current transformer with shunt resistance according to claim 1 is characterized in that: it is welding that the current transformer Primary Conductor is connected with shunt resistance.
3, a kind of current transformer with shunt resistance according to claim 1 is characterized in that: bonding conductor adopts low electrical resistant material.
4, a kind of current transformer with shunt resistance according to claim 3, it is characterized in that: described low electrical resistant material is red copper, brass.
5, a kind of current transformer with shunt resistance according to claim 1 is characterized in that: shunt resistance summation current transformer Primary Conductor adopts the conductor material of high stable resistance.
6, a kind of current transformer with shunt resistance according to claim 5, it is characterized in that: the conductor material of high stable resistance is copper-manganese, constantan.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100592969A CN101266878A (en) | 2008-01-14 | 2008-01-14 | Current mutual inductor with shunt resistor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100592969A CN101266878A (en) | 2008-01-14 | 2008-01-14 | Current mutual inductor with shunt resistor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101266878A true CN101266878A (en) | 2008-09-17 |
Family
ID=39989187
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008100592969A Pending CN101266878A (en) | 2008-01-14 | 2008-01-14 | Current mutual inductor with shunt resistor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101266878A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103000361A (en) * | 2012-11-22 | 2013-03-27 | 南京江北自动化技术有限公司 | Current transformer |
| CN104269261A (en) * | 2014-10-17 | 2015-01-07 | 夏邑县供电局 | Current transformer |
| CN105067861A (en) * | 2015-08-22 | 2015-11-18 | 安徽千恩智能科技股份有限公司 | Divided-flow current sampling mutual inductor |
| CN113555851A (en) * | 2020-04-26 | 2021-10-26 | 浙江阜康机械有限公司 | High-precision overcurrent protector of electric capstan |
-
2008
- 2008-01-14 CN CNA2008100592969A patent/CN101266878A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103000361A (en) * | 2012-11-22 | 2013-03-27 | 南京江北自动化技术有限公司 | Current transformer |
| CN104269261A (en) * | 2014-10-17 | 2015-01-07 | 夏邑县供电局 | Current transformer |
| CN105067861A (en) * | 2015-08-22 | 2015-11-18 | 安徽千恩智能科技股份有限公司 | Divided-flow current sampling mutual inductor |
| CN113555851A (en) * | 2020-04-26 | 2021-10-26 | 浙江阜康机械有限公司 | High-precision overcurrent protector of electric capstan |
| CN113555851B (en) * | 2020-04-26 | 2023-12-08 | 浙江阜康机械有限公司 | High-precision overcurrent protector of electric winch |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20080917 |