CN203607236U - Ultrathin large current mutual inductor - Google Patents
Ultrathin large current mutual inductor Download PDFInfo
- Publication number
- CN203607236U CN203607236U CN201320715088.6U CN201320715088U CN203607236U CN 203607236 U CN203607236 U CN 203607236U CN 201320715088 U CN201320715088 U CN 201320715088U CN 203607236 U CN203607236 U CN 203607236U
- Authority
- CN
- China
- Prior art keywords
- current
- mutual inductor
- current mutual
- integrated package
- busbar
- 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 - Fee Related
Links
Images
Landscapes
- Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
Abstract
The utility model discloses an ultrathin large current mutual inductor. The ultrathin large current mutual inductor comprises a main conducting bar (1), two shunt conducting bars (2), a circuit board (3), a current acquisition manifold block (4) and a secondary output wire (5). The two ends of the main conducting bar (1) are respectively connected with one shunt conducting bar (2). The circuit board (3) is welded between the two shunt conducting bars (2). The current acquisition manifold block (4) is welded to the circuit board (3). In this way, the magnitude of the rated current can be set through the sectional area of the main conducting bar (1) and the sectional areas of the shunt conducting bars, the rated current can be designed at a kilo-ampere level; the size and thickness of the current mutual inductor are very small, so that the current mutual inductor is suitable for being used in a current protection product which is compact in structure; primary isolation voltage and secondary isolation voltage of the current mutual inductor can reach 2 kV; besides, the current mutual inductor can be used for measuring alternating current and direct current, and is high in accuracy and linearity.
Description
Technical field
The utility model relates to current transformer field, particularly relates to a kind of ultra-thin great current mutual inductor.
Background technology
Current transformer, is generally through measure traverse line electric current on ampere wires with soft magnetic material.Such instrument transformer volume is very large, or penetrate shunt resistance at wire and obtain sampled voltage, this instrument transformer can not directly be isolated with secondary voltage, and low-voltage electrical apparatus miniaturization is at present the trend of market application, with regard to needing, a kind of volume is little and isolation voltage is high, precision is high, can measure the current transformer of alternating current and direct current simultaneously.
Utility model content
The technical problem that the utility model mainly solves is to provide a kind of ultra-thin great current mutual inductor; can measure AC and DC electric current; output 0-5V voltage; this current transformer be once greater than 2kV with the isolation voltage of secondary; this current transformer volume is little, is applicable to the low-voltage electrical apparatus of the large current protection of compact conformation.
For solving the problems of the technologies described above, the technical scheme that the utility model adopts is: a kind of ultra-thin great current mutual inductor is provided, comprises: main busbar, two shunting busbars, wiring board, current acquisition integrated package and secondary output leads; The two ends of described main busbar are connected with respectively a shunting busbar, and described wiring board is welded between two shunting busbars, and described current acquisition integrated package welds in the circuit board.
Preferably, described secondary output lead welds in the circuit board.
Preferably, the resistance of described main busbar is less than the resistance after shunting busbar is connected with current acquisition integrated package.
Preferably, described current acquisition integrated package is the electronics paster integrated package of secondary output 0-5V voltage.
The beneficial effects of the utility model are: the utility model can be measured AC and DC electric current, and volume is little, are applicable to the low-voltage electrical apparatus of the large current protection of compact conformation.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of ultra-thin great current mutual inductor of the utility model;
Fig. 2 be shown in a kind of equivalent electrical schematic of ultra-thin great current mutual inductor;
In accompanying drawing, the mark of each parts is as follows: 1, main busbar; 2, shunting busbar; 3, wiring board; 4,, current acquisition integrated package; 5, secondary output lead.
Embodiment
Below in conjunction with accompanying drawing, preferred embodiment of the present utility model is described in detail, thereby so that advantage of the present utility model and feature can be easier to be it will be appreciated by those skilled in the art that, protection range of the present utility model is made to more explicit defining.
Refer to Fig. 1 and Fig. 2, the utility model embodiment comprises:
A kind of ultra-thin great current mutual inductor, as shown in Figure 1, comprising: main busbar 1, two shunting busbars 2, wiring board 3, current acquisition integrated package 4 and secondary output leads 5; The two ends of described main busbar 1 are connected with respectively a shunting busbar 2, and described wiring board 3 is welded between two shunting busbars 2, and described current acquisition integrated package 4 is welded on wiring board 3; Described secondary output lead 5 is welded on wiring board 3; The resistance of described main busbar 1 is less than the resistance after shunting busbar 2 is connected with current acquisition integrated package 4; Described current acquisition integrated package 4 is the electronics paster integrated package of secondary output 0-5V voltage.
Measured current I is by main busbar 1 and shunting busbar 2, form two-way electric current I 1 and I2, add the resistance of current acquisition integrated package 4 because the resistance of main busbar 1 is less than shunting busbar 2, the electric current of the current acquisition integrated package 4 of flowing through is like this just very little and be proportional to measured current I.
That is: I=I1+I2
The electric current current acquisition integrated package 4 of flowing through, current acquisition integrated package 4 electric current convert to linearly 0 ~ 5V voltage by 5 outputs of secondary output lead for measuring equipment.
As shown in Figure 2, the equivalent resistance of main busbar 1 is R1 to equivalent electrical schematic diagram of the present utility model, and the equivalent resistance of shunting busbar 2 is R2, and the equivalent resistance of current acquisition integrated package 4 and wiring board 3 is R3, and all-in resistance is like this:
R=1/{(1/R1)+[1/(R2+R3)]}
I=U/R
I1=U/R1
I2=U/(R2+R3)
Wherein U is the pressure drop at busbar two ends.
Be exactly therefore having of fixing because R1, R2, R3 manufacture rear resistance:
I is directly proportional to U, and I2 is directly proportional to U again, and I is directly proportional to I2.
So the resistance coefficient that can be multiplied by busbar by I2 obtains I, realizes the measurement to I electric current.
Current acquisition integrated package 4 can be measured the AC and DC electric current of 0 ~ 20A, current conversion is become to the voltage of 0 ~ 5V, and current acquisition integrated package 4 once reach 2kV with the isolation voltage of secondary more than.
The utility model can arrange rated current size by the sectional area of main busbar and shunting busbar, and rated current can be designed into kilo-ampere level, and the shared volume of this current transformer and thickness are very little, are adapted at using in the current protection product of compact conformation; Current transformer once can reach 2kV with the isolation voltage of secondary, and this current transformer can measure AC and DC electric current, precision is high, the linearity is high.
The foregoing is only embodiment of the present utility model; not thereby limit the scope of the claims of the present utility model; every equivalent structure or conversion of equivalent flow process that utilizes the utility model specification and accompanying drawing content to do; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present utility model.
Claims (4)
1. a ultra-thin great current mutual inductor, is characterized in that, comprising: main busbar (1), two shunting busbar (2), wiring board (3), current acquisition integrated package (4) and secondary output leads (5); The two ends of described main busbar (1) are connected with respectively a shunting busbar (2), and described wiring board (3) is welded between two shunting busbars (2), and described current acquisition integrated package (4) is welded on wiring board (3).
2. the ultra-thin great current mutual inductor of one according to claim 1, is characterized in that: described secondary output lead (5) is welded on wiring board (3).
3. the ultra-thin great current mutual inductor of one according to claim 1, is characterized in that: the resistance of described main busbar (1) is less than the resistance after shunting busbar (2) is connected with current acquisition integrated package (4).
4. the ultra-thin great current mutual inductor of one according to claim 1, is characterized in that: described current acquisition integrated package (4) is the electronics paster integrated package of secondary output 0-5V voltage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320715088.6U CN203607236U (en) | 2013-11-14 | 2013-11-14 | Ultrathin large current mutual inductor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320715088.6U CN203607236U (en) | 2013-11-14 | 2013-11-14 | Ultrathin large current mutual inductor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203607236U true CN203607236U (en) | 2014-05-21 |
Family
ID=50719900
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320715088.6U Expired - Fee Related CN203607236U (en) | 2013-11-14 | 2013-11-14 | Ultrathin large current mutual inductor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203607236U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103646766A (en) * | 2013-11-14 | 2014-03-19 | 苏州长量电器有限公司 | Ultra-thin large current transformer |
| CN103700476A (en) * | 2013-12-20 | 2014-04-02 | 苏州长量电器有限公司 | Ultrathin large-current transformer |
-
2013
- 2013-11-14 CN CN201320715088.6U patent/CN203607236U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103646766A (en) * | 2013-11-14 | 2014-03-19 | 苏州长量电器有限公司 | Ultra-thin large current transformer |
| CN103700476A (en) * | 2013-12-20 | 2014-04-02 | 苏州长量电器有限公司 | Ultrathin large-current transformer |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN206292382U (en) | A kind of resistance meter calibrating installation | |
| CN101271129B (en) | Sensor type high tension electricity energy gauging method | |
| CN201955421U (en) | Wiring detector for multifunctional electric energy metering device | |
| CN106443561B (en) | Integral inspection method and device for electric energy metering device with voltage of 35kV or below | |
| CN106199118B (en) | Capacitor voltage-dividing type zero sequence voltage transformer with power output | |
| CN107422179A (en) | New power supply sample circuit, the power supply method of sampling and its low-voltage circuit breaker | |
| CN204575760U (en) | A kind of assembled electric cabinet pick-up unit with reactive-load compensation verification | |
| CN102445583B (en) | Voltage signal monitoring device of power energy quality monitoring device and circuit as well as application thereof | |
| CN105044432B (en) | Current transformer leakage current measuring method | |
| CN2884212Y (en) | Electric power meter by using copper-manganese current-diverter for current sampling | |
| CN202870138U (en) | Manganin shunt and electronic Watt-hour meter | |
| CN203607236U (en) | Ultrathin large current mutual inductor | |
| CN103646766A (en) | Ultra-thin large current transformer | |
| CN102739066B (en) | Inductive current-to-voltage converter and method for measuring high frequency current | |
| CN202189670U (en) | Combined current converter | |
| CN2779411Y (en) | An air-core coil current sensor for measuring power frequency heavy current | |
| Qing et al. | An innovative combined electronic instrument transformer applied in high voltage lines | |
| CN106855584A (en) | A kind of method that use current transformer measures electric current | |
| CN207096322U (en) | Power supply sample circuit and its low-voltage circuit breaker based on single electric current transformer | |
| CN201594103U (en) | Sleeve-type high-voltage one-phase sampler | |
| CN103700476A (en) | Ultrathin large-current transformer | |
| CN201378184Y (en) | Triphase four-wire system high voltage electric energy meter | |
| CN204945184U (en) | Multifunctional combined experimental wiring box | |
| CN204536427U (en) | A kind of high-tension switch cabinet galvanic circle resistance test system | |
| CN202362371U (en) | Anti-electricity-theft electric energy meter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140521 Termination date: 20181114 |