CN102800471A - Quick saturation current transformer - Google Patents
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- CN102800471A CN102800471A CN2011101380841A CN201110138084A CN102800471A CN 102800471 A CN102800471 A CN 102800471A CN 2011101380841 A CN2011101380841 A CN 2011101380841A CN 201110138084 A CN201110138084 A CN 201110138084A CN 102800471 A CN102800471 A CN 102800471A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F38/00—Adaptations of transformers or inductances for specific applications or functions
- H01F38/20—Instruments transformers
- H01F38/22—Instruments transformers for single phase ac
- H01F38/28—Current transformers
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Abstract
The invention relates to a quick saturation current transformer, which comprises an iron core magnetic path, a secondary winding and a processing unit, wherein the iron core magnetic path encircles a circuit conductor to be protected; one part of the iron core magnetic path penetrates through the secondary winding to form a magnetic core of the second winding; and the secondary winding outputs a signal to the processing unit through a lead wire. The quick saturation current transformer is characterized in that the iron core magnetic path is in a shape of a Chinese character 'RI' formed by stacking and connecting a connection frame, main magnetic sheets and auxiliary magnetic sheets; the main magnetic sheets are frames at the periphery of the Chinese character 'RI'; and the auxiliary magnetic sheets are transversely arranged in the middle of the Chinese character 'RI'. The thicknesses of the stacked main magnetic sheets are the same as or different from those of the stacked auxiliary magnetic sheets; the materials of the main magnetic sheets are the same as or different from those of the auxiliary magnetic sheets; and the connection frame is made of a ferromagnetic material or a non-ferromagnetic material. The auxiliary magnetic sheets are independent from the main magnetic sheets, so that the number of auxiliary magnetic sheets is different from that of main magnetic sheets, so that different magnetic division requirements are met, so that transformers with different rated currents and of different specifications in the same shell intelligent circuit breaker can be well serialized; the quick saturation current transformer is relatively high in applicability, and the cost is saved.
Description
Technical field
The present invention relates to a kind of electric magnetic fittings that is called as quick-magnetic saturated current transformer, the supporting intelligent circuit breaker that is used for for breaker controller provides an electric current authigenic power supply, is the optimization to known current transformer.
Background technology
Common current transformer is a kind of special transformer, and it is widely used in the electric power system to the potential winding of measuring instrument and relay or current coil power supply.Big electric current in the primary circuit is become the little electric current of standard in the secondary circuit, make measuring instrument and protective device standardization, miniaturization.Because instrument transformer primary side and secondary side do not have the contact of electricity, have only the contact of magnetic, thereby secondary device and big current segment are isolated, and the equal ground connection of instrument transformer secondary side, thereby the safety of equipment guaranteed with the person.
Quick-magnetic saturated current transformer is to obtain energy from the bus that passes magnetic core, is transformed to the secondary current in the secondary winding that magnetic core passes, and is the power supply of the controller circuitry in the intelligent circuit breaker.Its main electric characteristic is, the punching bus is as a winding, and the number of turn is 1; Secondary winding is passed by magnetic core; Different with common current transformer, secondary side hour provides certain power output to load at bus current; And when bus current surpassed predetermined value (overload or short circuit), power output no longer rose (or it is very little to rise in the allowed band), to guarantee the operate as normal of controller.Be that quick-magnetic saturated current transformer is a kind of particular power source converter that limits the highest secondary current output, the vitals that can be used as intelligent circuit breaker provides reliable power supply.
Fig. 5 is known current transformer structure chart, comprises magnetic circuit 1, secondary winding 2, output lead 3; Wherein magnetic circuit 1 is the softmagnetic metal sheet of closed assembly or coiling, fully around Primary Conductor 6; And the magnetic core that winding 2 becomes secondary winding is passed in the bottom 4 of magnetic circuit 1, and makes safeguard structure 5 with radome or with the polyester film adhesive tape.The current transformer of this magnetic structure does not reach at primary current and to let in the magnetically saturated very big current range of soft magnetic material, has the better linearity output characteristic.And when primary current increases; Secondary current is approximated to ratio and increases, and outside satisfying the control circuit functional requirement, major part becomes dump power; Mode with heating consumes on instrument transformer and electronic circuit; The scaling loss electric elements quicken device aging, for reliability service then need increase various radiators.
Summary of the invention
The objective of the invention is to provide a kind of quick-magnetic saturated current transformer: be used for having quick saturation characteristic for intelligent breaker provides spontaneous current and power supply, the restriction primary current outputs to the power of controller electronic circuit when big; And have rational in infrastructure, adaptability is strong, easy for installation, advantage such as precision is controlled.
The present invention realizes through following technical proposals:
A kind of quick-magnetic saturated current transformer; Comprise iron circuit, secondary winding, processing unit; Iron circuit is around the circuit conductor that needs protection, and the part of iron circuit is passed secondary winding, constitutes the magnetic core of secondary winding; Secondary winding, is characterized in that to handling the unit through lead output signal:
Iron circuit connects into a day font by link, main magnetic sheet, auxiliary magnetic sheet through closed assembly;
Main magnetic sheet is day hollow of word periphery, is used to form main magnetic circuit;
Auxiliary magnetic sheet is day yi word pattern at word middle part, is used for forming the branch magnetic circuit.
Further:
Thickness behind thickness behind the main magnetic sheet closed assembly and the auxiliary magnetic sheet closed assembly is identical or inequality.
The material of main magnetic sheet is identical with the material of auxiliary magnetic sheet or inequality.
The day font lamellar body that link is processed for a slice ferromagnetic material;
Some main magnetic sheets place the one-sided or link both sides and be connected with the outer peripheral portion of link of being placed in of link;
Some auxiliary magnetic sheets place the one-sided or link both sides and partly be connected with the middle part horizontal stripe of link of being placed in of link.
Link is the day font lamellar body that two ferromagnetic materials are processed;
Some main magnetic sheets are folded between two links and with the outer peripheral portion of link and are connected;
Some auxiliary magnetic sheets are folded between two links and with the middle part horizontal stripe of link and partly are connected.
Link is a slice or two day font lamellar bodies that nonmagnetic substance is processed;
When link was a slice, some main magnetic sheets placed the one-sided or link both sides and be connected with the outer peripheral portion of link of being placed in of link, and some auxiliary magnetic sheets place the one-sided or link both sides and partly be connected with the middle part horizontal stripe of link of being placed in of link;
When link was two, some main magnetic sheets were folded between two links and with the outer peripheral portion of link and are connected, and some auxiliary magnetic sheets are folded between two links and with the middle part horizontal stripe of link and partly are connected.
Link is a slice or two yi word pattern lamellar bodies that nonmagnetic substance is processed;
Link is laterally connected in the middle part of main magnetic sheet;
When link is a slice, some auxiliary magnetic sheets place link one-sided or be placed in the link both sides and with being connected of link;
When link was two, some auxiliary magnetic sheets were folded between two links and with link and are connected.
Owing to adopt this structure, brought new many good results for instrument transformer performance of the present invention:
At first; After comprising the branch magnetic structure; The output characteristic of current transformer has obvious non-linear characteristics, can get into fast to increase plateau (be under the bigger situation of primary side current increasing degree, the output increasing degree of current transformer curve less or zero growth is interval).This be because iron core around Primary Conductor on when flowing through low current, magnetic flux is mainly through containing the main magnetic circuit of winding magnetic core.When Primary Conductor flow through big electric current, magnetic induction strengthened, and the air gap between auxiliary magnetic sheet and main magnetic circuit has a large amount of magnetic flux flow mistakes, divided magnetic energy power to strengthen; Magnetic flux and the power output of instrument transformer in the winding magnetic core have been limited.
Secondly, the day font structure of link both overlapped main magnetic circuit with main magnetic sheet, and local and auxiliary magnetic sheet eclipsed composition magnetic circuit are arranged again; When satisfying the magnetic circuit functional requirement, play connection, location, fixation, thereby guaranteed the dimensional accuracy of air gap.
At last, divide the design feature of magnetic circuit to make things convenient for adjustment.Because auxiliary magnetic sheet is independent of main magnetic sheet, quantitatively can be different with main magnetic sheet, satisfying different branch magnetic requirements, thereby realize the seriation of different rated current specification instrument transformers in the same shell frame intelligent breaker better, applicability is stronger, provide cost savings.
Description of drawings
Fig. 1-Fig. 3 is respectively rearview, end view, the front view of the structure chart of a kind of quick-magnetic saturated current transformer of the present invention;
Fig. 4 is the partial enlarged drawing of branch magnetic circuit;
Fig. 5 is known current transformer;
Fig. 6-Fig. 8 is respectively rearview, end view, the front view of one embodiment of the present of invention;
Fig. 9-Figure 11 is respectively rearview, end view, the front view of a related embodiment of Fig. 1 scheme;
Figure 12-Figure 14 is respectively that the link in the such scheme is selected nonmagnetic substance for use, rearview, end view, the front view of the embodiment during a certain given shape;
Figure 15-Figure 17 increases rearview, end view, the front view of the embodiment of following minute magnetic effect of big electric current through increasing auxiliary magnetic sheet;
Figure 18 and Figure 19 are the assembly relation sketch mapes of a kind of quick-magnetic saturated current transformer of the present invention.
Embodiment
The present invention relates to a kind of quick-magnetic saturated current transformer; Comprise iron circuit, secondary winding, processing unit, iron circuit is around the circuit conductor that needs protection, and the part of magnetic circuit is passed secondary winding; Constitute the magnetic core of secondary winding; Secondary winding arrives through lead output signal and handles the unit, and iron circuit is by main magnetic circuit and divides magnetic circuit through the day font magnetic circuit that link is connected to form, wherein: divide and leave air gap between magnetic circuit and the main magnetic circuit or partly leave air gap; Main magnetic circuit is made up of hollow master magnetic sheet at least, divides magnetic circuit to be made up of the auxiliary magnetic sheet of sheet or strip at least.Divide magnetic circuit by link local with in the form of sheets or the auxiliary magnetic sheet of strip forms, between Primary Conductor and secondary winding, form the branch magnetic area.Auxiliary magnetic sheet is communicated with main magnetic circuit through two place's air gaps for not being the independent component of one with main magnetic sheet, and quantity can be different from main magnetic sheet.
When Primary Conductor flow through low current, magnetic flux was mainly through the residing main magnetic circuit of winding magnetic core; When Primary Conductor flow through big electric current, magnetic induction strengthened, and the air gap between auxiliary magnetic sheet and main magnetic circuit has a large amount of magnetic flux flow mistakes, divided magnetic energy power to strengthen; Magnetic flux and the power output of instrument transformer in the winding magnetic core have been limited.
Specify below in conjunction with accompanying drawing.
Fig. 1-Fig. 3 is current transformer core figure.1 is iron circuit, comprises main magnetic circuit 4 and divides magnetic circuit 7; Divide and partly leave air gap between magnetic circuit and the main magnetic circuit; 2 is secondary winding; 3 are the primary circuit conductor that needs protection, and 5 links processed for ferromagnetic material are a day font lamellar body.In the present embodiment, the quantity of link 5 is a slice; The 6th, the housing of horizontal stripe part 8 in the middle of not comprising on day font link; 12 is main magnetic sheet, is hollow; Housing 6 is identical with main magnetic sheet 12 geomeries, and lamination assembling back forms main magnetic circuit, and is looped around around the primary circuit conductor; Part 18 on the main magnetic circuit is positioned at a mouthful word bottom, and passing secondary winding becomes the winding magnetic core.13 are auxiliary magnetic sheet, in the form of sheets or strip, 8 be on day font link in the middle of the horizontal stripe part, auxiliary magnetic sheet and horizontal stripe part lamination assembling back formation branch magnetic circuit.In the present embodiment, preferentially select for use copper or aluminium matter rivet carries out the closed assembly processing of riveting tightly.Divide magnetic circuit between Primary Conductor 3 and secondary winding 2, form and divide magnetic area.Secondary winding 2 is wound on the skeleton 11, and 9,10 is the lead at secondary winding 2 two ends, is connected to processing unit; 15 is the part of main magnetic sheet word vertical edge suitable for reading, and auxiliary magnetic sheet 13 two ends link to each other with two vertical edges 15 through air gap 14,17; 16 is the lamination apertures position, and wherein the middle part 8 of link is carried out local broadening and done the position of portalling, and is used for the iron circuit closed assembly, and the closed assembly mode can be riveted joint or nut connects.Main magnetic sheet, link are in the position of winding magnetic core 18, and angle seam is made in the side bight, are used to pass skeleton 11.
Fig. 4 is the partial enlarged drawing of branch magnetic circuit.Divide magnetic circuit 7 to form by middle part that is positioned at the branch magnetic area on the link 8 and auxiliary magnetic sheet; The middle part 8 of link is a fillet in the illustrated embodiment, and carries out broadening in the part, the broadening position be provided with two with auxiliary magnetic sheet 13 on corresponding lamination apertures position.
Fig. 6-Fig. 8 is an embodiment of a kind of quick-magnetic saturated current transformer of the present invention.Iron circuit 1 is made up of main magnetic circuit 4 and branch magnetic circuit 7; Divide and partly leave air gap between magnetic circuit and the main magnetic circuit; 2 is secondary winding, and winding skeleton 11 is passed in the bottom 18 of main magnetic circuit, becomes the magnetic core of winding; 3 is the primary circuit conductor that needs protection, and main magnetic circuit is around Primary Conductor; 5 links processed for ferromagnetic material, the centre has a local laminated structure, makes an approximate day font on the link structure; 12 is main magnetic sheet, and top is circular, and global shape is similar to hollow; Housing 6 on the link is overlapping with main magnetic sheet, constitutes main magnetic circuit; The 13rd, auxiliary magnetic sheet is the bars of a side band arc; Middle part 8 on the link is formed with auxiliary magnetic sheet and is divided magnetic circuit; Divide magnetic circuit between Primary Conductor and secondary winding, form and divide magnetic area.Divide and partly leave air gap between magnetic circuit and the main magnetic circuit.9,10 is lead, and the connection winding two ends are to handling the unit; Be connected through air gap 14,17 between the part 15 on auxiliary magnetic sheet and the main magnetic circuit; 16 is the lamination apertures position, is used for the closed assembly of iron core magnetic sheet, and the closed assembly mode can be riveted joint or nut connects.Main magnetic sheet, link are made in the side corner positions of winding magnetic core 18 and are worn the sheet joint-cutting, are used to pass skeleton.Special, as can be seen from the figure, in this embodiment, be positioned at the middle part 8 of branch magnetic area on the link, with main magnetic circuit be connected the cross section broad, intermediate shape is the strip of band arc.
Fig. 9-the 11st, the related embodiment of Fig. 1-Fig. 3.Be characterized in, multi-disc day font link 5 quantity is set in iron circuit.1 is iron circuit among the figure, and 2 is secondary winding, and 3 is the primary circuit conductor that needs protection, and iron circuit is made up of main magnetic circuit 4 and branch magnetic circuit 7, divides and partly leaves air gap between magnetic circuit and the main magnetic circuit; Link 5 quantity in this example is two, the 6th, do not comprise the housing of mid portion 8 on day font link, and geomery is with main magnetic sheet.Easy to operate for closed assembly, selection is placed on main magnetic sheet 12 between the housing of two links 5, the pattern of the sandwich closed assembly master of link magnetic sheet.On two links 6 and the overlapping composition main magnetic circuit of main magnetic sheet; 8 be on day font link in the middle of the horizontal stripe part, 8 on two links formed with auxiliary magnetic sheet 13 and divided magnetic circuits 7; 9,10 is the lead at secondary winding two ends; 11 is the winding skeleton; 15 is vertically to exist air gap 14 and 17,16 for lamination apertures position, 18 is to be positioned at the following part of mouthful word on the main magnetic circuit on the main magnetic sheet on day word structure housing between both sides, the auxiliary magnetic sheet and 15, and it passes winding becomes magnetic core.
The difference of the embodiment of present embodiment and Fig. 1-shown in Figure 3 is quantity, the ratio that link, main magnetic sheet, auxiliary three kinds of parts of magnetic sheet are provided with in iron core.Quantity, ratio through the adjustment three can obtain different magnetic circuit characteristics.Its realization mechanism is: link is main magnetic circuit and the part that divides magnetic circuit simultaneously, and the middle part horizontal stripe 8 of link makes part main magnetic circuit, branch magnetic circuit not have the air gap connection, and when little electric current, horizontal stripe 8 just can divide magnetic in a small amount like this.Make the score quantity of magnetism limited but control its sectional area, and saturated fast more easily.Restriction link quantity when measure is big just like monolithic width among the width on the restriction monolithic link among Fig. 1 and Fig. 4.When flowing through big electric current in the primary circuit conductor, magnetic induction strengthens, and magnetic flux passes air gap, and the branch magnetic circuit that auxiliary magnetic sheet constitutes partly begins effectively to divide magnetic.Therefore, quantity, the ratio of three kinds of magnetic sheets of allotment can obtain different magnetic circuit parameters, satisfy different output characteristic needs, and need not change structural member, have saved the die sinking cost.
Figure 12-Figure 14 is another embodiment of the present invention.1 is iron circuit, comprises main magnetic circuit 4 and divides magnetic circuit 7, divides between magnetic circuit and the main magnetic circuit and leaves air gap; 2 is secondary winding; 3 is the primary circuit conductor that needs protection, and 5 is link, selects nonmagnetic substance for use; The 6th, the two ends of link, overlap joint two places about main magnetic circuit; 8 is the mid portion of link; Lead 9,10 connects the enamelled wire two ends on the skeleton 11, their other end connection processing unit respectively; 12 is main magnetic sheet, is hollow, and preferentially uses copper or aluminium matter rivet is riveted tightly lamination and is assembled into main magnetic circuit, and 15 is two vertical edges on the hollow main magnetic circuit that constitutes of main magnetic sheet; Auxiliary magnetic sheet 13 in the form of sheets or strip, closed assembly composition magnetic circuit, two ends link to each other with 15 through air gap 14,17; Divide magnetic circuit between Primary Conductor 3 and secondary winding 2, form and divide magnetic area.Main magnetic circuit is around the primary circuit conductor, is in the following strip 18 of mouthful word and passes secondary winding and become the winding magnetic core.16 is the lamination apertures position, is distributed in main magnetic circuit and divides on the magnetic circuit, and quantity is 5.Except that the riveted joint of preferentially selecting for use, can also use multiple connected modes such as nut, wrapping, sticking, weldering.Main magnetic sheet is made angle seam in winding magnetic core 18 side bights, is used to pass coil rack.The characteristics of this embodiment are to select for use nonmagnetic substance to do magnet stand.Thus, magnet stand can have multiple structure choice: can keep the link day font structure of Fig. 1, Fig. 4, not see variation from structure, but link does not have the magnetic circuit function, only plays location, interconnect function.Also can be as shown in Figure 6, link is simplified to simple list structure, and no magnetic circuit function only connects, fixes auxiliary magnetic sheet, makes it to be combined on the main magnetic circuit, guarantees air gap value and precision.
Figure 15-shown in Figure 17 is another embodiment of the present invention.1 is iron circuit among the figure, comprises main magnetic circuit 4 and divides magnetic circuit 7; Divide and partly leave air gap between magnetic circuit and the main magnetic circuit; 2 is secondary winding; 3 are the primary circuit conductor that needs protection, and 5 links processed for ferromagnetic material are a day font lamellar body, and quantity is a slice; The 6th, do not comprise the housing of mid portion 8 on day font link; 12 is main magnetic sheet, is hollow; Housing 6 is identical with main magnetic sheet 12 geomeries, forms main magnetic circuit after lamination is riveted tightly; Main magnetic circuit is looped around the primary circuit conductor; The 15th, be positioned at two vertical edges on the main magnetic circuit, about two figure in, be positioned at the Primary Conductor left and right sides; 18 is the following horizontal stripe of hollow on the main magnetic circuit, and passing secondary winding becomes the winding magnetic core.13 are auxiliary magnetic sheet, and in the form of sheets or strip, closed assembly is riveted tightly to the mid portion 8 of link, and form with 8 and to divide magnetic circuits; Divide magnetic circuit between Primary Conductor 3 and secondary winding 2, form and divide magnetic area; Be connected through air gap 14,17 between the auxiliary magnetic sheet two ends and 15.Secondary winding is wound on the skeleton 11, and 9,10 for connecting the lead at secondary winding 2 two ends, and the other end is connected to processing unit; 16 is the lamination apertures position, is used for the assembling behind the lamination, and present embodiment is preferentially selected rivet copper or aluminium matter the processing of riveting tightly for use, and the position, hole is arranged on main magnetic circuit and divides on the magnetic circuit, and quantity is 5.Main magnetic sheet, link are in the position of winding magnetic core 18, and angle seam is made in the side bight, are used to pass the secondary winding skeleton.Be characterized in; On the basis of Fig. 1,4, the embodiment shown in 5; Increased the quantity of auxiliary magnetic sheet 13, made the score magnetic circuit when the monolithic restricted width, increase the net sectional area of branch magnetic circuit, increased the magnetic flux that passes through through increasing thickness; Change and divide magnetic energy power to reach the effect of wanting, this has made full use of the structural advantage that auxiliary magnetic sheet is independent of main magnetic sheet.Simultaneously, because this design feature, auxiliary magnetic sheet can only just can be realized different minutes magnetic effects through selecting for use with the soft magnetic material of main magnetic sheet unlike material, need not again project organization and die sinking, has practiced thrift cost.
Figure 18 and Figure 19 are the assembling relationship figures of basic model of the present invention, and Figure 18 forms parts and assembling signal for it, and Figure 19 is for organizing the integral body after changeing.2 is secondary winding among the figure, is wound on the coil rack 11 with enamelled wire, and the coil rack middle part is a through hole; The 5th, link is a day font structure; Form with periphery 6 by middle horizontal stripe 8; 12 is main magnetic sheet, and its geomery and 6 together.On the bottom of link and main magnetic sheet, a vertex angle part is left R-joining, and this structure can be so that link and main magnetic sheet penetrate the skeleton intermediate throughholes.After successively penetrating, link and main magnetic sheet can be folded tight through the connecting hole 16 that is arranged on corresponding position, preferentially adopt copperly to carry out lamination with rivet aluminium matter and rivet tightly.12 shape of main magnetic sheet can be similar to the Magnetic Circuit Shape of regarding the main magnetic circuit 4 that forms as both laminations as, promptly main magnetic circuit be shaped as a mouthful word structure, around Primary Conductor 3.And the lower sid strip 18 of main magnetic circuit passes secondary winding, becomes the winding magnetic core.Auxiliary magnetic sheet 13 is shaped as strip or sheet, and the auxiliary magnetic sheet of a slice installs on the link through stack of laminations at least, connects the mid portion 8 of position on link, forms together and divides magnetic circuit 7.By the structures shape of link, divide magnetic circuit between Primary Conductor and secondary winding.Because auxiliary magnetic sheet is a kind of parts that are independent of main magnetic sheet, divides magnetic circuit by its part of forming, does not directly link to each other with main magnetic circuit, has air gap 14 and 17 between two vertical edges 15 of two ends and main magnetic circuit.Lead 9,10 is connected on the secondary winding, and the induced signal on the winding is input to the processing unit that the other end is connecting.Can find out that link 5, main magnetic sheet 12 and auxiliary magnetic sheet 13 at least respectively have 1 in iron circuit.
In above each embodiment: when link was a slice, main magnetic sheet placed the one-sided or link both sides that are placed in of link, and main magnetic sheet is connected with the outer peripheral portion of link; Auxiliary magnetic sheet places the one-sided or link both sides that are placed in of link, and auxiliary magnetic sheet is connected with link.When link was two, main magnetic sheet was folded between two links and with the outer peripheral portion of link and is connected, and auxiliary magnetic sheet is folded between two links and with link and is connected.
Claims (7)
1. quick-magnetic saturated current transformer; Comprise iron circuit, secondary winding, processing unit; Iron circuit is around the circuit conductor that needs protection, and the part of iron circuit is passed secondary winding, constitutes the magnetic core of secondary winding; Secondary winding, is characterized in that to handling the unit through lead output signal:
Said iron circuit connects into a day font by link, main magnetic sheet, auxiliary magnetic sheet through closed assembly;
Main magnetic sheet is day hollow of word periphery, is used to form main magnetic circuit;
Auxiliary magnetic sheet is day yi word pattern at word middle part, is used for forming the branch magnetic circuit.
2. quick-magnetic saturated current transformer according to claim 1 is characterized in that:
Thickness behind thickness behind the main magnetic sheet closed assembly and the auxiliary magnetic sheet closed assembly is identical or inequality.
3. quick-magnetic saturated current transformer according to claim 1 is characterized in that:
The material of main magnetic sheet is identical with the material of auxiliary magnetic sheet or inequality.
4. according to the described quick-magnetic saturated current transformer of one of claim 1-3, it is characterized in that: the day font lamellar body that link is processed for a slice ferromagnetic material;
Some main magnetic sheets place the one-sided or link both sides and be connected with the outer peripheral portion of link of being placed in of link;
Some auxiliary magnetic sheets place the one-sided or link both sides and partly be connected with the middle part horizontal stripe of link of being placed in of link.
5. according to the described quick-magnetic saturated current transformer of one of claim 1-3, it is characterized in that:
Link is the day font lamellar body that two ferromagnetic materials are processed;
Some main magnetic sheets are folded between two links and with the outer peripheral portion of link and are connected;
Some auxiliary magnetic sheets are folded between two links and with the middle part horizontal stripe of link and partly are connected.
6. according to the described quick-magnetic saturated current transformer of one of claim 1-3, it is characterized in that: link is a slice or two day font lamellar bodies that nonmagnetic substance is processed;
When link was a slice, some main magnetic sheets placed the one-sided or link both sides and be connected with the outer peripheral portion of link of being placed in of link, and some auxiliary magnetic sheets place the one-sided or link both sides and partly be connected with the middle part horizontal stripe of link of being placed in of link;
When link was two, some main magnetic sheets were folded between two links and with the outer peripheral portion of link and are connected, and some auxiliary magnetic sheets are folded between two links and with the middle part horizontal stripe of link and partly are connected.
7. according to the described quick-magnetic saturated current transformer of one of claim 1-3, it is characterized in that:
Link is a slice or two yi word pattern lamellar bodies that nonmagnetic substance is processed;
Link is laterally connected in the middle part of main magnetic sheet;
When link is a slice, some auxiliary magnetic sheets place link one-sided or be placed in the link both sides and with being connected of link;
When link was two, some auxiliary magnetic sheets were folded between two links and with link and are connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101380841A CN102800471A (en) | 2011-05-26 | 2011-05-26 | Quick saturation current transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101380841A CN102800471A (en) | 2011-05-26 | 2011-05-26 | Quick saturation current transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102800471A true CN102800471A (en) | 2012-11-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011101380841A Pending CN102800471A (en) | 2011-05-26 | 2011-05-26 | Quick saturation current transformer |
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| CN (1) | CN102800471A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105336484A (en) * | 2014-08-06 | 2016-02-17 | 上海电科电器科技有限公司 | Current transformer |
| CN108922748A (en) * | 2018-08-14 | 2018-11-30 | 无锡智卓电气有限公司 | A kind of current transformer |
| CN112997264A (en) * | 2018-12-26 | 2021-06-18 | Ls电气株式会社 | Current transformer of air circuit breaker |
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| CN1129347A (en) * | 1994-09-29 | 1996-08-21 | 施耐德电器公司 | Trip device comprising at least one current transformer |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112997264A (en) * | 2018-12-26 | 2021-06-18 | Ls电气株式会社 | Current transformer of air circuit breaker |
| JP2022515034A (en) * | 2018-12-26 | 2022-02-17 | エルエス、エレクトリック、カンパニー、リミテッド | Current transformer of aerial circuit breaker |
| EP3905287A4 (en) * | 2018-12-26 | 2022-03-09 | Ls Electric Co., Ltd. | Current transformer of air circuit breaker |
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| US11810709B2 (en) | 2018-12-26 | 2023-11-07 | Ls Electric Co., Ltd. | Current transformer of air circuit breaker |
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Application publication date: 20121128 |