CN201233808Y - Current mutual inductor having shunting resistor - Google Patents
Current mutual inductor having shunting resistor Download PDFInfo
- Publication number
- CN201233808Y CN201233808Y CNU2008200821997U CN200820082199U CN201233808Y CN 201233808 Y CN201233808 Y CN 201233808Y CN U2008200821997 U CNU2008200821997 U CN U2008200821997U CN 200820082199 U CN200820082199 U CN 200820082199U CN 201233808 Y CN201233808 Y CN 201233808Y
- Authority
- CN
- China
- Prior art keywords
- current transformer
- shunt resistance
- conductor
- primary conductor
- transformer primary
- 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 current transformer which is used in an electric energy meter and provided with a shunt resistance, and belongs to a device for measuring current. The utility model aims to provide a current transformer with isolated input and output, strong anti-interference capability, small volume and low cost. The current transformer comprises two connecting conductors, a shunt resistance, a current transformer and a current transformer primary conductor. The number of the connecting conductors is two; the connecting conductors are connected and fixed into a whole through the shunt resistance; two ends of the current transformer primary conductor are respectively connected with one connecting conductor; and the current transformer primary conductor penetrates through the current transformer, and is composed of a coil with an iron core coil or a magnetic core. The current transformer has the advantages of reliable clamping, convenient operation and safe work, and requires a few workers during the testing process.
Description
Technical field
The utility model relates to the current transformer of the band shunt resistance that uses on a kind of electric energy meter, belongs 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 purpose of this utility model is to overcome the deficiencies in the prior art, provides a kind of little electric current by current transformer, thereby reduces the requirement to current transformer, and the current transformer of the band shunt resistance that volume can be less.
The current transformer of band shunt resistance of the present utility model 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 the composition of the coil of ribbon core coil or magnetic core.
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 or 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 utility model.
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 the constantan rods that are " 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, the current transformer of band shunt resistance comprises current transformer, and described current transformer is the composition of the coil of ribbon core coil or magnetic core; 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, the current transformer of band 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, the current transformer of band shunt resistance according to claim 1 is characterized in that: bonding conductor adopts low electrical resistant material.
4, the current transformer of band shunt resistance according to claim 4 is characterized in that: described low electrical resistant material is red copper or brass.
5, the current transformer of band 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, the current transformer of band shunt resistance according to claim 5 is characterized in that: the conductor material of high stable resistance is copper-manganese or constantan.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200821997U CN201233808Y (en) | 2008-01-14 | 2008-01-14 | Current mutual inductor having shunting resistor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200821997U CN201233808Y (en) | 2008-01-14 | 2008-01-14 | Current mutual inductor having shunting resistor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201233808Y true CN201233808Y (en) | 2009-05-06 |
Family
ID=40620194
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200821997U Expired - Lifetime CN201233808Y (en) | 2008-01-14 | 2008-01-14 | Current mutual inductor having shunting resistor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201233808Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2524312A (en) * | 2014-03-20 | 2015-09-23 | C & S Technology Ltd | Combined current sensor |
-
2008
- 2008-01-14 CN CNU2008200821997U patent/CN201233808Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2524312A (en) * | 2014-03-20 | 2015-09-23 | C & S Technology Ltd | Combined current sensor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: ZHEJIANG YONGTAILONG ELECTRONIC CO., LTD. Free format text: FORMER NAME: ZHEJIANG YONGTAILONG ELECTRONICS CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 314501 No. 8, Kangding Road, Tongxiang Economic Development Zone, Zhejiang, China Patentee after: Zhejiang Yongtailong Electronic Co., Ltd. Patentee after: Tongxiang Weida Electronics Co., Ltd. Address before: 314501 No. 8, Kangding Road, Tongxiang Economic Development Zone, Zhejiang, China Patentee before: Zhejiang Yongtailong Electronics Co., Ltd. Patentee before: Tongxiang Weida Electronics Co., Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20090506 |
|
| CX01 | Expiry of patent term |