CN204855618U - Shunting current sampling mutual -inductor - Google Patents
Shunting current sampling mutual -inductor Download PDFInfo
- Publication number
- CN204855618U CN204855618U CN201520647637.XU CN201520647637U CN204855618U CN 204855618 U CN204855618 U CN 204855618U CN 201520647637 U CN201520647637 U CN 201520647637U CN 204855618 U CN204855618 U CN 204855618U
- Authority
- CN
- China
- Prior art keywords
- spreader plate
- copper
- manganese
- mutual inductor
- distribution plate
- 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.)
- Active
Links
Abstract
The utility model discloses a shunting current sampling mutual -inductor, including mutual -inductor, first flow distribution plate, second flow distribution plate, first flow distribution plate is the plane, comprises copper -manganese that is located the middle part and the red copper that is located both sides respectively, and the second flow distribution plate is eight characters type, comprises red copper and the copper -manganese that is located one of them flank respectively, and the copper -manganese is decided by the size of the electric current through first flow distribution plate and second flow distribution plate with the area size of red copper in first flow distribution plate and the second flow distribution plate, and the middle extension board of second flow distribution plate passes mutual -inductor and the welding of first flow distribution plate. The utility model discloses a set up the current division that first flow distribution plate and second flow distribution plate once inclined the mutual -inductor on the mutual -inductor for the volume of mutual -inductor obviously reduces, thereby has reduced the cost of mutual -inductor, has improved the current sampling precision.
Description
Technical field
The utility model relates to a kind of mutual inductor, particularly relates to a kind of current divider type current sampling mutual inductor.
Background technology
At present in intelligent switching control cabinet, current sampling for isolating switch adopts mutual inductor to complete mostly, and it is very large for the mutual inductor volume of the circuit breaker current sampling use of big current, thus can produce that cost increases greatly, take up room larger problem, simultaneously because the electric current of mutual inductor primary side is larger, also require that the precision of mutual inductor is higher, current sampling demand could be met.Therefore, need badly and provide a kind of novel mutual inductor to solve the problems referred to above.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of current divider type current sampling mutual inductor, and volume is little, sampling precision is high.
For solving the problems of the technologies described above, the technical scheme that the utility model adopts is: provide a kind of current divider type current sampling mutual inductor, comprise mutual inductor, it is characterized in that, also comprise the first spreader plate, second spreader plate, first spreader plate is plane, be made up of with the red copper being positioned at both sides the copper-manganese being positioned at middle part respectively, second spreader plate is splayed configuration, be made up of red copper and the copper-manganese being positioned at a wherein flank respectively, in first spreader plate and the second spreader plate, the size of copper-manganese and red copper is determined by the size of current by the first spreader plate and the second spreader plate, the middle support plate of the second spreader plate welds with the first spreader plate through mutual inductor.
In the utility model preferred embodiment, the first spreader plate adopts high-power electron beam welding technology to be connected with the copper-manganese in the second spreader plate and red copper, makes weld seam between copper-manganese and red copper solid and reliable.
In the utility model preferred embodiment, bottom two flanks of the second spreader plate, adopt soldering processes to be connected with the first spreader plate, the second spreader plate and the first spreader plate are connected firmly.
In the utility model preferred embodiment, when being used by current divider type current sampling mutual inductor installation testing if necessary, then the both sides of the first spreader plate respectively have a circular hole.
In the utility model preferred embodiment, the electric current that the second spreader plate passes through is not more than 200A, to meet the little demand of mutual inductor volume.
In the utility model preferred embodiment, the rated voltage drop at the first spreader plate and the second spreader plate two ends comprises 60mV, 75mV, 100mV, 120mV, 150mV, 300mV.Because described current divider type current sampling mutual inductor is used in intelligent switching control cabinet, rated voltage drop and the ammeter pressure drop at its two ends match.
In the utility model preferred embodiment, in the first spreader plate, the thickness of copper-manganese is not more than the thickness of red copper, and in the second spreader plate, red copper is identical with the thickness of copper-manganese.In the application of actual product, the situation that in the first spreader plate, copper-manganese is not identical with the thickness of red copper is applied more.
The beneficial effects of the utility model are: the utility model by arranging the first spreader plate and the second spreader plate by the current distributing of mutual inductor primary side on mutual inductor, the volume of mutual inductor is obviously reduced, thus reduce the cost of mutual inductor, improve current sampling precision.
Accompanying drawing explanation
Fig. 1 is the perspective view of the utility model current divider type current sampling mutual inductor one preferred embodiment;
Fig. 2 is the front view of described current divider type current sampling mutual inductor;
Fig. 3 is the side view of described current divider type current sampling mutual inductor;
Fig. 4 is the vertical view of described current divider type current sampling mutual inductor;
Fig. 5 is the vertical view of described first spreader plate;
Fig. 6 is the front view of described first spreader plate;
Fig. 7 is the stereographic map of described second spreader plate;
Fig. 8 is the side view of described second spreader plate;
In accompanying drawing, the mark of each parts is as follows: 1, mutual inductor, the 2, first spreader plate, and 21, circular hole, the 3, second spreader plate, 31, flank, 32, middle support plate, 4, red copper, 5, copper-manganese.
Embodiment
Below in conjunction with accompanying drawing, preferred embodiment of the present utility model is described in detail, to make advantage of the present utility model and feature can be easier to be readily appreciated by one skilled in the art, thus more explicit defining is made to protection domain of the present utility model.
Refer to Fig. 1 to Fig. 4, the utility model embodiment comprises:
A kind of current divider type current sampling mutual inductor, comprise mutual inductor 1, first spreader plate 2, second spreader plate 3, first spreader plate 2 is plane, be made up of with the red copper 4 being positioned at both sides the copper-manganese 5 being positioned at middle part respectively, second spreader plate 3 is splayed configuration, be made up of red copper 4 and the copper-manganese 5 being positioned at a wherein flank 31 respectively, in first spreader plate 2 and the second spreader plate 3, copper-manganese 5 determines by by the size of current of the first spreader plate 2 with the second spreader plate 3 with the size of red copper 4, and the middle support plate 32 of the second spreader plate 3 passes mutual inductor 1 and welds with the first spreader plate 2.
Refer to Fig. 5 and Fig. 6, the middle part of the first spreader plate 2 is copper-manganese 5, and both sides are red copper 4, and the area of red copper 4 is obviously greater than the area of copper-manganese 5, when being used by current divider type current sampling mutual inductor installation testing if necessary, then respectively have a circular hole 21 in the both sides of the first spreader plate 2.Refer to Fig. 7 and Fig. 8, the material of the second spreader plate 3 is formed primarily of red copper 4, only a flank 31 is distributed with small size copper-manganese 5 wherein.First spreader plate 2 adopts high-power electron beam welding technology to be connected with the copper-manganese 5 in the second spreader plate 3 and red copper 4, makes weld seam between copper-manganese 5 and red copper 4 solid and reliable.Second spreader plate 3 is through the magnetic induction loop of mutual inductor 1, and its middle support plate 32 props up just at the middle part of magnetic induction loop, and the bottom of two flanks 31 adopts soldering processes to weld with the first spreader plate 2, and the second spreader plate 3 and the first spreader plate 2 are connected firmly.
The principle of work of described current divider type current sampling mutual inductor is that the first spreader plate 2 and the second spreader plate 3 are by the current distributing of mutual inductor 1 primary side, because the first spreader plate 2 is identical with the rated voltage drop of the second spreader plate 3 both sides, both resistance is different, according to Ohm law, thus different by both electric currents.In the utility model, the electric current that the second spreader plate 3 passes through will much smaller than the electric current passed through of the first spreader plate 2, and the electric current that the second spreader plate 3 passes through is not more than 200A, to meet the little demand of mutual inductor 1 volume.Again because the characteristic of copper-manganese 5 determines, such as resistivity is 0.440 Ω mm
2/ m (when 20 DEG C), and the resistivity of red copper 4 is much smaller than the resistivity of copper-manganese 5, therefore the resistance size major embodiment of the first spreader plate 2 and the second spreader plate 3 is the size of copper-manganese 5.In the application of actual product, in the first spreader plate 2, the thickness of copper-manganese 5 is not more than the thickness of red copper 4, and in the second spreader plate 3, the thickness of red copper 4 and copper-manganese 5 is identical, and in a preferred embodiment, the thickness of red copper 4 and copper-manganese 5 is at about 4mm.
For the electric current of described current divider type current sampling mutual inductor by 1000A, if the second spreader plate 3 shunts 100A, then the first spreader plate 2 shunts 900A, and when the voltage of described current divider type current sampling mutual inductor both sides reduces to 75mA, the first electric current plate 2 all-in resistance in parallel with the second electric current plate 3 is R
always=75u Ω; Can calculate according to Ohm law, the resistance of the first spreader plate 2 is the R1=83.3u Ω resistance of copper-manganese 5 (namely in the first electric current plate 2), and the resistance of the second spreader plate 3 is the R2=750u Ω resistance of copper-manganese 5 (namely in the second electric current plate 3).Again according to formula I=J*S (J is current density, and I is the electric current by electric current plate, and S is sectional area), be 6A/mm according to the current density of red copper 4
2if red copper 4 is identical with the thickness of copper-manganese 5, then red copper 4 is identical with the sectional area of copper-manganese 5, then the sectional area that can calculate the first electric current plate 2 is 150mm
2, the sectional area of the second electric current plate 3 is 16.67mm
2, and the thickness of red copper 4 and copper-manganese 5 is generally at about 4mm, therefore can calculate the width of red copper 4 and copper-manganese 5; If red copper 4 is different with the thickness of copper-manganese 5 in the first electric current plate 2, according to the thickness (being less than 4mm) of the known copper-manganese 5 of product demand.Again according to the computing formula of resistance
namely the length of red copper 4 and copper-manganese 5 in the first electric current plate 2 and the second electric current plate 3 can be calculated.
The utility model, by arranging the first spreader plate 2 and the second spreader plate 3 by the current distributing of mutual inductor 1 primary side on mutual inductor 1, makes the volume of mutual inductor 1 obviously reduce, thus reduces the cost of mutual inductor 1, improve current sampling precision.
The foregoing is only embodiment of the present utility model; not thereby the scope of the claims of the present utility model is limited; every utilize the utility model instructions and accompanying drawing content to do equivalent structure or equivalent flow process conversion; 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 (7)
1. a current divider type current sampling mutual inductor, comprise mutual inductor, it is characterized in that, also comprise the first spreader plate, the second spreader plate, first spreader plate is plane, be made up of with the red copper being positioned at both sides the copper-manganese being positioned at middle part respectively, second spreader plate is splayed configuration, be made up of red copper and the copper-manganese being positioned at a wherein flank respectively, in first spreader plate and the second spreader plate, the size of copper-manganese and red copper determines by by the size of current of the first spreader plate with the second spreader plate, and the middle support plate of the second spreader plate passes mutual inductor and welds with the first spreader plate.
2. current divider type current sampling mutual inductor according to claim 1, is characterized in that, the first spreader plate adopts high-power electron beam welding technology to be connected with the copper-manganese in the second spreader plate and red copper.
3. current divider type current sampling mutual inductor according to claim 1, is characterized in that, adopts soldering processes to be connected with the first spreader plate bottom two flanks of the second spreader plate.
4. current divider type current sampling mutual inductor according to claim 1, is characterized in that, the both sides of the first spreader plate respectively have a circular hole.
5. current divider type current sampling mutual inductor according to claim 1, is characterized in that, the electric current that the second spreader plate passes through is not more than 200A.
6. current divider type current sampling mutual inductor according to claim 1, is characterized in that, in the first spreader plate, the thickness of copper-manganese is not more than the thickness of red copper, and in the second spreader plate, red copper is identical with the thickness of copper-manganese.
7. the current divider type current sampling mutual inductor according to any one of claim 1 to 6, is characterized in that, the rated voltage drop at the first spreader plate and the second spreader plate two ends comprises 60mV, 75mV, 100mV, 120mV, 150mV, 300mV.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520647637.XU CN204855618U (en) | 2015-08-22 | 2015-08-22 | Shunting current sampling mutual -inductor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520647637.XU CN204855618U (en) | 2015-08-22 | 2015-08-22 | Shunting current sampling mutual -inductor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204855618U true CN204855618U (en) | 2015-12-09 |
Family
ID=54746156
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520647637.XU Active CN204855618U (en) | 2015-08-22 | 2015-08-22 | Shunting current sampling mutual -inductor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204855618U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
-
2015
- 2015-08-22 CN CN201520647637.XU patent/CN204855618U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11133660B2 (en) | Structural arrangement for use in a conducting busbar | |
| CN202930567U (en) | Copper aluminum transitional device cable clamp | |
| CN204855618U (en) | Shunting current sampling mutual -inductor | |
| CN105067861A (en) | Divided-flow current sampling mutual inductor | |
| CN102882200B (en) | Bridge type fault current limiter with current balancing effect | |
| CN109000481B (en) | Variable direct current flows back to Lu Tiege gold ore deposit hot stove | |
| CN105543940B (en) | A kind of device and method of lifting VCP plating line electroplating evenness | |
| CN100471066C (en) | Heavy-current electronic switch of static and dynamic flow equalization | |
| CN201444436U (en) | Core clamp with low structural part loss | |
| CN102877098B (en) | Multi-waveband output pulse plating method | |
| CN204335153U (en) | Pad structure and circuit board | |
| CN209681500U (en) | A kind of fuse welding tooling and welding mechanism | |
| CN203850443U (en) | Direct current straight polarity device | |
| CN203708136U (en) | Heavy-current direct-current pulsed power supply | |
| CN206259619U (en) | A kind of anti-vortex structure of power distribution cabinet | |
| CN202839884U (en) | Storage battery large current clip fixing device | |
| CN205723517U (en) | A kind of being provided with can the power model of common electrode large arm | |
| CN207862453U (en) | Electrolytic manganese metal graphite anode | |
| CN206003595U (en) | A kind of transformer type controlled reactor magnetic integrated system | |
| CN203250546U (en) | Right trapezoid copper bar distribution structure | |
| CN209282025U (en) | A kind of modularization 10kV combination transformer | |
| CN207457329U (en) | A kind of checking of great current equipment | |
| CN204178733U (en) | A kind of switch cubicle current carrying bus | |
| CN202202609U (en) | Butterfly type through iron tower of overhead power transmission line | |
| CN203787380U (en) | Vacuum arc ion source with adjustable ion current intensity |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |