US2606981A - Magnetic switching device of the cartridge or plug-type - Google Patents

Magnetic switching device of the cartridge or plug-type Download PDF

Info

Publication number
US2606981A
US2606981A US757860A US75786047A US2606981A US 2606981 A US2606981 A US 2606981A US 757860 A US757860 A US 757860A US 75786047 A US75786047 A US 75786047A US 2606981 A US2606981 A US 2606981A
Authority
US
United States
Prior art keywords
switching
housing
current
magnetic
cartridge
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
Application number
US757860A
Other languages
English (en)
Inventor
Kesselring Fritz
Degler Heinrich
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
F K G FRITZ KESSELRING GERATEB
F K G FRITZ KESSELRING GERATEBAU AG
Original Assignee
F K G FRITZ KESSELRING GERATEB
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by F K G FRITZ KESSELRING GERATEB filed Critical F K G FRITZ KESSELRING GERATEB
Application granted granted Critical
Publication of US2606981A publication Critical patent/US2606981A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H47/00—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current
    • H01H47/001—Functional circuits, e.g. logic, sequencing, interlocking circuits
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/62—Heating or cooling of contacts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/22—Power arrangements internal to the switch for operating the driving mechanism
    • H01H3/28—Power arrangements internal to the switch for operating the driving mechanism using electromagnet
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
    • H01H33/64—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid wherein the break is in gas
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
    • H01H33/66—Vacuum switches
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H51/00—Electromagnetic relays
    • H01H51/28—Relays having both armature and contacts within a sealed casing outside which the operating coil is located, e.g. contact carried by a magnetic leaf spring or reed
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/20—Contact mechanisms of dynamic converters
    • H02M1/22—Contact mechanisms of dynamic converters incorporating collectors and brushes
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/20—Contact mechanisms of dynamic converters
    • H02M1/26—Contact mechanisms of dynamic converters incorporating cam-operated contacts

Definitions

  • Our invention relates to magnetic switchin devices of the cartridge or plug-type, i. e. magnetically operated switches whose switch contact means are mounted within an insulating enclosure.
  • Such devices are suitable for closing and opening electric circuits, the insertion of resistance, inductance or capacitance elements into such circuits, and for control, regulating or protective purposes in the various fields of electrical engineering.
  • the magnetically-controlled movable switching element, the appertaining magnet poles and stationary contacts within a cartridge-type housing in such a manner that the dissipation of heat from the switching element to the outside of the housing is mainl by heat conduction in the longitudinal direction of the element toward and into the stationary contacts.
  • the cartridge In order to always secure a flow of conducted heat from the switching element to the stationary contact under avoidance of an excessive temperature of the element, it is also. preferable to design the cartridge so that'the switching element does not assume a temperature about 100.
  • the stationary contacts may be equipped with cooling surfaces such as ribs, vanes or fins.
  • the 9 Claims it is also possible to give the 9 Claims. (Cl. 200-87) stationary contacts ample dimensions, as regards size and heat conductance, so that they are capable of transferring the heat mainly by conductance to the amply dimensioned current supply conductors. If the current density in these conductors is so low that they heat up only moderately above the ambient temperature, these conductors are readily capable of dissipating the heat produced within the cartridge.
  • the switching element with its holding and biasing means, the magnetic pole pieces and also the stationary contacts are all mounted together to form a structural unit.
  • the housing of switching devices according to the invention consists mainly of insulating material such as pressed material, a tube of woundup materiaL'or for more exacting requirements, of ceramic or vitreous material such as glass, quartz or the like. Since, generally, the magnetic control flux is applied by extraneous means and must enter into the switching device, the insulating housing is preferably designed as a tube whose ends are closed by members of such kind that there is virtually no weakening of the magnetic flux.
  • Iloe closure members may consist of thin plates of insulating material or metal.
  • closure members of ferromagnetic sheet material of at most 0.5 mm., especially about 0.1 mm. thickness which lie snug against the magnetic pole pieces in face-to-face relationship and have high specific electric resistance in order to keep eddy-current losses at a minimum.
  • the magnetically controlled switchingelement'of the device is denoted by I.
  • This element is mountedonan elastic shaft 2' which forms also the-biasing spring for the switching, element and tends to hold it in the illustrated "position-1'
  • the switching element is disposed between two magnet pole pieces 3 and l.
  • the stationary contacts to cooperate with the switching element are denoted by and 6. They are mounted in metallic sleeves l and 8 which are firmly secured to a tubular insulating enclosure 9.
  • the torsion spring 2 is rigidly secured to this tube so that the switching element l is substantially thermally insulated from all other metal parts with the exception of the stationary contacts 5 and 6.
  • the two ends of the insulating tube 9 are hermetically sealed by thin closure plates ii] and H, for instance, of ferromagnetic metal.
  • the magnetic yokes which supply the control flux 5 are shown at [2 and I 3. It may be necessary to cover the metallic closures lo and H with insulating material for electrically insulating the cartridge from the yokes l2, [3.
  • the additional insulation should consist of a material of high insulating strength and good thermal conductivity, and its permissible temperature should be as high as possible.
  • the current Ia to be controlled is applied to the stationary contacts by heavy conductive bars or buses i l and IE.
  • the current flows from bar [4 to the stationary contact 5, thence through the switching element I to the stationary contact 6 through which it enters into the bar [5.
  • the switching element l is equipped with contact pieces l6 and I7.
  • the switching element 2 is rotated about its torsion shaft 2 in the counterclockwise direction thereby interrupting the current Ia.
  • the same switching device may be operated so that the current Ib enters, for in stance, through the yoke [3, the closure plate H and the pole piece 4 to the switching element l and leaves through pole piece 3, closure plate it and yoke l2.
  • This current flow exists when the yokes l2 and I3 are magnetized so that an interruption of the current Ib is effected by terminating the magnetic excitation.
  • the stationary contacts 5 and B serve only as insulated stops, or the device may be 1 employed so that the switching element acts as a make and break contact with the efiect that the current Ia is switched in immediately after the interruption of the current In.
  • contact pieces I1 and I8 are attached to the respective pole pieces, and contact pieces 19 and 20 are mounted on the switching element I
  • the interior of the enclosure 9 may be filled with a gas 2! which, especially for high voltages, may have elevated pressure of 5 to 10 atmospheres.
  • the interior of the enclosure may be evacuated.
  • the switching element I extends horizontally and the stationary contacts 5' and 6 extend vertically and are disposed laterally with respect to the pole .pieces 3 and 4'.
  • the portions of the 4 stationary contacts that extend outside of the enclosure 9 are provided with cooling vanes 22 and 23 respectively.
  • the pole surfaces of the pieces 3 and 4 are slanted so that aside from Maxwells attractive forces, additional attractive forces are efiective due to divergence in permeability. In order to prevent a change in the operating conditions, in particular a variation of the contact distance due to heating enclosure, the coeflicient of thermal elongation of the pole pieces 3.
  • the housing may be equipped with a holding coil which magnetizes the pole pieces of the cartridge under control by the switching element once the pole pieces are suificiently magnetized from an extraneous source of magnetic flux to initiate the operation.
  • the magnetizing eifect of the holding coil then maintains the switching element in the switched-in position and the switching element is permitted to return to its position of rest only when the current drops below a given small value, for instance 5% or 10% of the rated value.
  • the tubular housing may serve as a carrier for the coil.
  • the device When using such a combination with direct current, the device closes or opens a circuit in response to a temporary and possibly very short control impulse and then causes the holding coil to produce a magnet field'which maintains the pole pieces sufficiently energized to keep the circuit in the same condition after the termination of the control impulse until some other control efiect occurs to interrupt the holding current.
  • the device can be used in such a manner that after the interruption of the controlling current, the magnetic energization is continued due to'the efiect of the controlled current until the controlled current approaches its zero passage. The switching function is then delayed accordingly and occurs only at an instantaneous value of the alternating current low enough to prevent damage due to arcs and undue contact consumption.
  • the switching unit In cases where the switching unit is applied in order to insert a previously shorted resistor into an electric circuit, this resistor'may be placed on and supported by the insulating housing of the switching unit in the same manner'as mentioned above with reference to holding coils.
  • Such a resistor combination has the advantage of affording minimum inductance of the resistancecircuit, which is of advantage for the prevention of arcs at the switching-in moment.
  • the switching unit may be combined with an inductive or capacitive circuit element.
  • the housing or insulating tube of the unit may form part of the casing for a condenser.
  • switching elements in electric and magnetic parallel relation to one another.
  • a relatively large number of switching elements for instance to 100 and more, can be placed into cartridge-type containers.
  • These switching elements may also be series-connected in magnetic respects. It is likewise possible to connect them electrically in series but magnetically in parallel.
  • the device according to Fig. 3 has three switching elements I" arranged in magnetic series relation between the pole pieces 3" and 4".
  • the insulating tube 9 which encloses the switching elements and is sealed at both ends by ferromagnetic plates l0 and H, serves as a spool or carrier for a coil 24, for instance, designed as a holding coil.
  • the magnetic pole pieces 3 and 4" serve as stationary contacts. Additional stationary contacts 25 are disposed between the switching elements in order to provide a definite position for the individual switching elements in the switched-in condition. However, the additional contacts 25 may be omitted and the switching elements designed for directly contacting one another.
  • the switch elements I" rotate counter-clockwise and close a circuit which includes the holding coil 24.
  • the controlled current I then produces a magnetic field which maintains the circuit in closed condition regardless of whether or not the control flux from an extraneous source that initiated the performance continues.
  • a switching unit 26, inserted between the yokes 21 and 21 is cooled by liquid 28 that serves also as a resistor.
  • liquid 28 that serves also as a resistor.
  • These yokes are electrically insulated from the magnetizing core 29 of the control coil 30 and form current conductors for the switching element as well as electrodes for the liquid. If the switching element is normally in open position, the resistance of liquid 28 is normally effective and is shorted when coil 30 is energized; or, if the switching element normally closes the circuit, the liquid resistance is normally shorted and becomes efiective when coil 30 is energized.
  • the electrically conductive parts, at which the opening and closing of the circuit occurs consist of the customary contact materials, these materials insert an element of high magnetic reluctance, equivalent to an air gap, into the ma netic circuit.
  • This reluctance element or air gap must have fairly ample dimensions in order to insure a safe electric contact even when the contact surfaces are partly consumed.
  • the presence of such elements of high reluctance requires an increased amount of ampere turns for controlling the switching element and tends to reduce the contact pressure in the switched-in condition. Therefore, according to another feature of the invention, the stationary contacts and the corresponding contact pieces of the switching element, i. e.
  • IE, ll, ll, l8, i9, in Fig. 1 are made of ferromagnetic material, for instance nickel, iron, cobalt and ferromagnetic alloys. It is essential that these materials have high relative permeability of at least to 100 up to the expected highest operating temperatures of the device.
  • the disappearance of the ferromagnetic condition of these materials when exceeding the so-called Curie temperature may be taken advantage of, for instance, in order to secure an automatic interruption of the current at an excessive temperature of the switching element.
  • Nickel having a Curie temperature of about 350 C., is well suitable for this purpose.
  • the socalled Hausler alloys with Curie points down to about C. are also applicable.
  • At least the stationary contacts and the switching element are disposed within a chemically inactive atmosphere, for instance, nitrogen or hydrogen.
  • the magnetically active parts that is, the switching element and the pole pieces, are preferably designed so as to have minimum magnetizing losses. Especially the hysteresis and eddycurrent losses should be low if the switching operation is to be performed within intervals of extremely short duration. Therefore, these magnetic parts may be subdivided. For instance, these parts, especially at least the magnet pieces, may be composed of comminuted material.
  • Switching devices according to the invention are not only applicable for low currents and voltages, for instance, as customary in the communication and measuring fields, but they are likewise advantageous for power purposes. For applications of the latter kind, care should be taken that the elongation or expansion due to the considerable heating effects does not affect the functioning.
  • the thermal coefficients of expansion of the cooperating parts of the switching cartridge should be chosen in proper relation to one another, for instance, as explained above with reference to Fig. 3.
  • the dis turbing effect of thermal expansion can be minimized in a simple manner if the contact surfaces and pole surfaces are designed so that the tangential planes in the points of engagement of the contacts, as well as the pole surfaces, extend in parallel to the main direction of thermal ex pansion of the switching unit or cartridge. In general, this is tantamount to locating the switching element with its longitudinal axis substantially in parallel to the longitudinal axis of the switching unit in accordance with the embodiments of Figs. 1 and 3.
  • devices according to the invention may be cooled by a suitable cooling agent.
  • the application of artificial cooling is especially simple if the cartridges or housings are hermetically sealed in accordance with the illustrated embodiments. This permits using a gaseous medium, for instance a flow of air, for cooling purposes.
  • the switching units may also be arranged within a stationary or flowing liquid, for instance, in oil or in a water-glycol solution of suiiiciently small conductivity.
  • the cooling agent may serve as a resistor to be controlled by the switching device.
  • the liquid preferably consists of an electrolyte of the desired conductivity.
  • The'appertaining electrodes should be designed so that the current density remains within permissible limits.
  • a plurality of switching units or cartridges according to the invention may be connected in parallel, in series, or in'mixed circuit arrangements. In such electric parallel connections, it may be useful, for maintaining a balanced load distribution until the moment of complete interruption, to connect an inductance coil in series with each unit.
  • This coil if desired, may be c0 bined with the cartridge housing to a structural entity in a manner similar to the embodiment shown in Fig. 3. If units with holding coils are employed, such an inductance coil may consist of at least part of the holding coil.
  • Switching devices as eXemplified by the abovedescribed embodiments may be used as individual apparatus or, according to another feature of the invention, several switching units or car tridges appertaining to electrically separate current paths are subjected to a common magnetic control flux.
  • a single control coil may produce the controlling magnetic flux for the plurality of cartridges, while the magnetic return path extends through the individual units.
  • a magnet core surrounded. by the control coil represents the source of the magnetic control flux, this source having a small magnetic reluctance as compared with that of the several switching units controlled thereby.
  • the control coil may also immediately act upon one of the cartridges, while other cartridges form the magnetic return path or part thereof. If desired, more than one control coil may be provided to jointly act on the magnetically associated cartridges.
  • the switching units or cartridges may be assigned for response to respectively different values of an electric current.
  • the different units may be rated to respond to respectively diiferent critical currents.
  • several SWitChing units may have the same critical current value while means extraneous to the units proper are provided to make the equally rated units respond to respectively diiferent current values.
  • Such a different response of substantially equally rated units is ob tained, for instance, by inserting magnetic resistance or reluctance into the magnetic circuit of one or several of the units. Different reluctance in the magnetic circuit can be obtained by providing air gaps of different width. For certain purposes, a simultaneous response of several or all switching units of such a multiple device is desirable.
  • the different units or cartridges appertaining to the device are magnetically parallel-connected in order to maintain the controlling ampere turns at a minimum.
  • the cartridges there are cases, however, in which it is preferable to arrang the cartridges at least partly in a magnetic series connection.
  • the magnetic control flux is unidirectional or variable.
  • the control flux can be prevented from dropping to zero by providing two or more phase-displaced control fluxes. These fluxes may stem from separate current sources. In mose cases, however, a phase-displaced flux is more simply obtained with the aid of short-circuit windings. Such a winding may be common for a number of switching units, although it is also possible to assign a short-circuited winding to each.
  • the switching device for the main current is advantageously combined with an auxiliary switching device for the control currents, the auxiliary device being also subject to the control flux. It may be of advantage to equip the auxiliary switching device also with switching units which, as a rule, may have smaller dimensions and may be rated for a smaller switching capacity than those of the main device.
  • two or more units may b electrically parallelconnected. For operating with high voltages, it may be similarly of advantage to electrically series-connect two or more units.
  • the core 3! of the magnetic field structure shown in this figure is equipped with a control coil 32 and also with a short-circuited winding 32, which permits energizing the control coil with alternating current while preventing the magnetic control flux induced in core 3
  • is joined with two yokes 33 and 3d.
  • the yokes extend in parallel to each other and form extended pole surfaces between which three cartridge-type switching units 35, 3B and iii are inserted.
  • each cartridge has two magnet pole pieces 38 and 3t, a movable switching element 49, and an insulating tubular body 41.
  • the cartridges are designed in accordance with the features of the invention represented in Figs. 1, 2 and 3.
  • Each cartridge is shown to be equipped with a holding coil 42, 63 and 54 respectively, arranged on the insulating enclosure of the cartridge, as explained in the loregoing with reference to Fig. 3.
  • the magnetic field system is equipped with auxiliary yo'xes Al and 8 for controlling an auxiliary switching device denoted, as a whole, by 25.
  • the auxiliary device is composed of three switching cartridges, all denoted by $6.
  • the switching cartridges 35, 36 and 37 are electrically insulated from the yokes 33 and 34 by insulating strips 49 and 58.
  • the switching device may be applied for the following purpose. If the control coil 3
  • a switching device comprising an insulating housing, two magnet pole pieces having respective pole faces spaced from each other within said housing, said pole pieces extending from within to substantially the outside of said housing, a magnetizable rigid switching member pivoted at its center-between said pole' pieces for rotational movement toward said two pole faces and away therefrom respectively, spring means for biasing said member away from said pole faces, and two stationary contact structures extending from without to within said housing and having in said housing respective contact faces bridged by said member in one of said positions, said contact structures having at all points between said contact faces and the outside of said housing a conductive cross section larger than that engageable by said member.
  • a switching device comprising an insulating tubular housing, two magnet pole pieces disposed in the two axial ends respectively of said housing so as to substantially close said housing ends, said pole pieces being axially spaced from each other and having two respective pole faces within said housing and two outer faces at said axial ends respectively of said housing, a magnetizable rigid switching member disposed in said housing between said pole pieces and pivotally connected wtih said housing for angular movement toward and away respectively from said pole faces, said member extending substantially in the axial direction of said housing, biasing means for normally holding said member away from said pole faces, and electric contact means including said member to be closed and open depending upon the position of said member.
  • a switching device comprising an insulating tubular housing, two rigid magnetic pole pieces attached to said housing at the respective ends thereof and having respective pole faces spaced from each other withinsaid housing, said pole pieces being magnetically and electro-conductive- 1y accessible outside said housing, a rigid switching member revolvably mounted in said housing between said pole pieces so as to be movable between two positions toward said pole faces and away therefrom respectively, said member having biasing means tending to holdit away from said pole faces and consisting substantially of ferromagnetic material to be movable toward said pole faces when magnetized thereby, and two rigid parts of electric contact material integral with said respective pole pieces and electrically engageable by said'member to be bridged thereby. 4.
  • a switching device comprising an insulating housing, two magnet pole pieces attached to said housing at opposite sides respectively and having respective pole faces within said housing, two stationary rigid contact structures extending fromwithout to within said housing and having respective contact faces within said housing, an elongated rigid and magnetizable' switching member pivoted about its center withinsaid housing between said pole pieces and movable between two angular positions, said member having a air of faces engageable with said pole faces when said member is in one position and having a pair of faces engageable with said contact faces when said member is in the other position, said member being biased toward said other position and magnectically controllable by said pole pieces to move to said one position, all said faces extending substantially parallel to the longitudinal direction of said member.
  • a switching device comprising an insulating housing, two ferromagnetic and. electrically conductive pole structures insulated from each other and extending from without to within said housing, said structures having respective pole faces spaced from each other within said housing and having respective portions accessible at the outside of said housing for supplying magnetic flux and electric current, contact pieces of electrically good conductive material disposed on said respective pole faces, a magnetizable and electrically conductive armature member disposed within said housing and magnetically movable toward said pole faces, said member when so moved being in electric bridging engagement with said two contact pieces, spring means disposed in said housing, said armature member being rigid throughout and being mounted on said spring means, said spring means having relative to said member a biasing force directed away from said pole faces for disengaging said member from said structures and being the only mechanical support of said member.
  • a switching device comprising an insulating housing, two ferromagnetic and electrically conductive pole structures insulated from each other and extending from without to within said housing, said structures having respective pole faces spaced from each other within said housing and having respective portions accessible at the outside of said housing for supplying magnetic flux and electric current, each of said pole structures having a piece of electric contact material disposed on said pole face in face-to-face contact therewith, a rigid and electrically conductive armature member movably disposed in said housing, biasing spring means connected with said member to bias it away from said pole faces, said member being magnetically movable toward said pole faces due to said flux and being engageable with said two pieces of contact material to electrically bridge said structures.
  • a switching device comprising an insulating housing, two magnetically and'electri'caily conductive structures extending from within said housing to the outside of said housing and having respective faces spaced from each other Within said housing, said structures being electrically insulated from each other and being accessible from the outside of said housing for passing magnetic flux and electric current through said structures, a magnetizable and electrically conductive switching member disposed in said housing and being movable into bridging engagement with said two faces and away therefrom to electrically interconnect and disconnect said two structures, a biasing spring connected with said member in said housing for biasing said member away from said faces, each of said structures having at all points between said'face and the outside of said housing an electrically conductive cross section larger than the area of contact engagement with said member.
  • a switching device comprising an insulating housing, twomagnetically and electrically conductive structures extending from within said housing to the outside of said housing and having respective pole .face's spaced from each other within said housing, said structures being electrically insulated from each other and having respective portions magnetically and electrically accessible from the outside of said housing for passing magnetic flux and electric current through said structures, a magn'etizable and electrically conductive member being rigid throughout and being disposed in said housing, a biasing spring means connected with said member for biasing it away from said two pole faces, said member being mechanically supported only by said spring means and being movable due to said flux into bridging engagement with said two structures of said respective pole faces to then electrically interconnect said structures, each of said structures having at all points between said pole face and the outside of said housing an electrically conductive cross sect-ion larger than the area of contact engagement with-said member.
  • 9.11 switching device comprising-a plurality of individual devices according to claim 7 connected in magnetic and electric parallel relation to each other and having a common magnetic field structure outside of said respective housings and a common control coil on said field structure, said field structure having two yoke portions in magnetic engagement with said respective two structures of each of said individual devices.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Electromagnets (AREA)
  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Switch Cases, Indication, And Locking (AREA)
US757860A 1946-07-05 1947-06-28 Magnetic switching device of the cartridge or plug-type Expired - Lifetime US2606981A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH267791T 1946-07-05

Publications (1)

Publication Number Publication Date
US2606981A true US2606981A (en) 1952-08-12

Family

ID=4525630

Family Applications (2)

Application Number Title Priority Date Filing Date
US2732451D Expired - Lifetime US2732451A (en) 1946-07-05 Degler
US757860A Expired - Lifetime US2606981A (en) 1946-07-05 1947-06-28 Magnetic switching device of the cartridge or plug-type

Family Applications Before (1)

Application Number Title Priority Date Filing Date
US2732451D Expired - Lifetime US2732451A (en) 1946-07-05 Degler

Country Status (6)

Country Link
US (2) US2606981A (fr)
BE (1) BE474972A (fr)
CH (3) CH267791A (fr)
DE (2) DE842809C (fr)
FR (1) FR949017A (fr)
GB (1) GB644035A (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2706756A (en) * 1953-10-19 1955-04-19 Bell Telephone Labor Inc Electromechanical switch
US2759062A (en) * 1952-05-02 1956-08-14 Bell Aircraft Corp Magnetic relay
US2767279A (en) * 1952-01-25 1956-10-16 North Electric Co Electromagnetic relay
US2946876A (en) * 1954-11-22 1960-07-26 Cons Electronics Ind Relay structure
US3130283A (en) * 1960-01-07 1964-04-21 Union Everedy Company Inc Multiple pole relay switch
EP1347483A3 (fr) * 2002-03-18 2005-02-16 Siemens Aktiengesellschaft Interrupteur électrique ave une piece de contact fixée sur une tige
CN103003905A (zh) * 2010-07-30 2013-03-27 西门子公司 具有散热装置的开关设备
CN111769721A (zh) * 2019-12-24 2020-10-13 陕西理工大学 一种电机控制供电装置及系统

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1112566B (de) * 1952-12-05 1961-08-10 Siemens Ag Anordnung zum Schliessen einer elektromagnetisch gesteuerten Wechselstromschalteinrichtung
DE957320C (de) * 1953-07-14 1957-01-31 Licentia Gmbh Selbstschalter, insbesondere Installationsselbstschalter
DE1052531B (de) * 1955-01-26 1959-03-12 Calor Emag Elektrizitaets Ag Schalteinrichtung mit einer axialsymmetrisch an einer Drehstabfeder sitzenden Kontaktbruecke
DE1033799B (de) * 1955-04-19 1958-07-10 Licentia Gmbh Einrichtung zum Schutz von Senderoehren
US2984770A (en) * 1957-04-22 1961-05-16 Cutler Hammer Inc Electromagnetic devices
NL131296C (fr) * 1959-06-17
US3480750A (en) * 1966-10-19 1969-11-25 Westinghouse Electric Corp Multiple-break enclosed-type circuit interrupters with external rotary contact driving means and single chamber construction

Citations (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US604682A (en) * 1898-05-24 moore
US684378A (en) * 1901-02-14 1901-10-08 George Westinghouse Electric lamp.
US1185240A (en) * 1914-01-09 1916-05-30 Kemp & Lauritzen Electrical relay.
US1510341A (en) * 1921-06-04 1924-09-30 Wireless Specialty Apparatus Electrical apparatus
DE451596C (de) * 1925-10-04 1927-10-28 Elfa Elektrotechnische Fabrik Installations-Selbstschalter
US1783279A (en) * 1926-10-30 1930-12-02 Condit Electrical Mfg Corp Circuit interrupter
US2060235A (en) * 1935-06-22 1936-11-10 Bell Telephone Labor Inc Relay
US2080356A (en) * 1933-07-13 1937-05-11 Haslev Andreas Marius Electric relay
US2187115A (en) * 1939-03-02 1940-01-16 Bell Telephone Labor Inc Switching device
US2234982A (en) * 1939-04-07 1941-03-18 Donald S Ross Flush floor electric outlet
US2264124A (en) * 1940-06-27 1941-11-25 Bell Telephone Labor Inc Relay
US2277215A (en) * 1940-06-27 1942-03-24 Bell Telephone Labor Inc Relay contact device
US2342781A (en) * 1940-10-16 1944-02-29 Bell Telephone Labor Inc Combined mercury interrupter and transformer
US2378986A (en) * 1940-07-11 1945-06-26 Bell Telephone Labor Inc Polarized relay
US2445401A (en) * 1944-05-26 1948-07-20 Mallory & Co Inc P R Vibrator
US2481003A (en) * 1945-04-03 1949-09-06 Bell Telephone Labor Inc Protective arrangement for switch contacts
US2521723A (en) * 1945-02-03 1950-09-12 Hubbell Harvey Magnetically controlled switch

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1149054A (en) * 1913-11-17 1915-08-03 North East Electric Co Controller for electric generators.
US2264746A (en) * 1940-06-27 1941-12-02 Bell Telephone Labor Inc Electromagnetic switch
USB384542I5 (fr) * 1941-03-21
US2510700A (en) * 1945-07-06 1950-06-06 Weston Electrical Instr Corp Electrical relay
US2570062A (en) * 1946-10-18 1951-10-02 Fkg Fritz Kesselring Geratebau Electric contact device for variable currents
CH269318A (de) * 1946-10-24 1950-06-30 Fkg Ag Elektrische Schalteinrichtung für veränderlichen Speisestrom.
CH279079A (de) * 1948-09-17 1951-11-15 Fkg Ag Elektrische Schalteinrichtung.

Patent Citations (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US604682A (en) * 1898-05-24 moore
US684378A (en) * 1901-02-14 1901-10-08 George Westinghouse Electric lamp.
US1185240A (en) * 1914-01-09 1916-05-30 Kemp & Lauritzen Electrical relay.
US1510341A (en) * 1921-06-04 1924-09-30 Wireless Specialty Apparatus Electrical apparatus
DE451596C (de) * 1925-10-04 1927-10-28 Elfa Elektrotechnische Fabrik Installations-Selbstschalter
US1783279A (en) * 1926-10-30 1930-12-02 Condit Electrical Mfg Corp Circuit interrupter
US2080356A (en) * 1933-07-13 1937-05-11 Haslev Andreas Marius Electric relay
US2060235A (en) * 1935-06-22 1936-11-10 Bell Telephone Labor Inc Relay
US2187115A (en) * 1939-03-02 1940-01-16 Bell Telephone Labor Inc Switching device
US2234982A (en) * 1939-04-07 1941-03-18 Donald S Ross Flush floor electric outlet
US2264124A (en) * 1940-06-27 1941-11-25 Bell Telephone Labor Inc Relay
US2277215A (en) * 1940-06-27 1942-03-24 Bell Telephone Labor Inc Relay contact device
US2378986A (en) * 1940-07-11 1945-06-26 Bell Telephone Labor Inc Polarized relay
US2342781A (en) * 1940-10-16 1944-02-29 Bell Telephone Labor Inc Combined mercury interrupter and transformer
US2445401A (en) * 1944-05-26 1948-07-20 Mallory & Co Inc P R Vibrator
US2521723A (en) * 1945-02-03 1950-09-12 Hubbell Harvey Magnetically controlled switch
US2481003A (en) * 1945-04-03 1949-09-06 Bell Telephone Labor Inc Protective arrangement for switch contacts

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2767279A (en) * 1952-01-25 1956-10-16 North Electric Co Electromagnetic relay
US2759062A (en) * 1952-05-02 1956-08-14 Bell Aircraft Corp Magnetic relay
US2706756A (en) * 1953-10-19 1955-04-19 Bell Telephone Labor Inc Electromechanical switch
US2946876A (en) * 1954-11-22 1960-07-26 Cons Electronics Ind Relay structure
US3130283A (en) * 1960-01-07 1964-04-21 Union Everedy Company Inc Multiple pole relay switch
EP1347483A3 (fr) * 2002-03-18 2005-02-16 Siemens Aktiengesellschaft Interrupteur électrique ave une piece de contact fixée sur une tige
CN103003905A (zh) * 2010-07-30 2013-03-27 西门子公司 具有散热装置的开关设备
CN103003905B (zh) * 2010-07-30 2016-08-03 西门子公司 具有散热装置的开关设备
US9799462B2 (en) 2010-07-30 2017-10-24 Siemens Aktiengesellschaft Switching device with a heat extraction apparatus
CN111769721A (zh) * 2019-12-24 2020-10-13 陕西理工大学 一种电机控制供电装置及系统
CN111769721B (zh) * 2019-12-24 2023-09-22 陕西理工大学 一种电机控制供电装置及系统

Also Published As

Publication number Publication date
DE869240C (de) 1953-03-02
CH288313A (de) 1953-01-15
DE842809C (de) 1952-06-30
US2732451A (en) 1956-01-24
CH267791A (de) 1950-04-15
BE474972A (fr)
CH264433A (de) 1949-10-15
GB644035A (en) 1950-10-04
FR949017A (fr) 1949-08-18

Similar Documents

Publication Publication Date Title
US2606981A (en) Magnetic switching device of the cartridge or plug-type
KR102397524B1 (ko) 전기 스위치용 접속 장치 및 전기 스위치
US2469203A (en) Electric switch
EP2701170A1 (fr) Appareil de commutation électrique de courant continu bidirectionnel
US2427750A (en) Capacitor closed relay having retentive magnetic circuit
US2639357A (en) Current limiting apparatus
US2725446A (en) Circuit interrupter
GB1078029A (en) Improvements in or relating to electrical switches
US2668884A (en) Electrical switch apparatus
US2180661A (en) Vacuum switch
US2875303A (en) Circuit interrupter
US2215804A (en) Circuit interrupting apparatus
US2597873A (en) Electromagnetic switching device for controlling electric circuits
US2875302A (en) Circuit interrupter
GB1033720A (en) Vacuum interrupter with magnetic means for reducing arc voltage
US1763284A (en) Thermal relay
US2342084A (en) Transformer tap-changing circuit
US1763116A (en) Magnetic contactor
SU1365163A1 (ru) Вакуумный выключатель
US687065A (en) Circuit-breaker.
US2752450A (en) Electromagnetic light current contact making relays
SU519782A1 (ru) Электромагнитный коммутационный аппарат
SU938327A1 (ru) Высоковольтный вакуумный переключатель
GB1158351A (en) Electrical Circuit Interrupters.
US1380983A (en) Core for electrical apparatus