DE1809451C - Electromagnetic device for monitoring, control and protection systems of electrical circuits - Google Patents

Description

i 809 451
3 4

to be used as changeable capacitance. The value increases, ^Erre ^ ^t L ^t uirten ^ll FlußieitDuge1 5

the capacity increases with increasing excitation current in approaching the " ⁸ B ^ SrJ * _mm i _ma len air gap

to the coil, reaches a maximum and then falls and 6 initially to ^{8Uf em} ™ J ^

if the current increases again, it decreases again. and are at. ^ "^ {j ^ ppungszone magne-

The invention is cut below with reference to FIG. 5 outside the ^U 7 "7 ^l _ ^ _etic river

Ausfiihnmgsbeispieten with reference to the table saturated, where the j ^^ "^, ^ _{magn (;} .

Drawing explained in more detail It now shows insignificant

Fig. 1 is an overall view of an ash river according to the invention, which the ··

electromagnetic device, cuts the magnetized ^ ^

Fig. 2 the overlapped inner ends of the magnet ίο interspersed, w ^ / ^^ nden "'eFktroma'gn'eügesteugesterten Flußleitbügel the inventive reduction de ^" Jg ™ £ η Flußleitbügeln 5 device nrit contact pieces for switching a see attraction ^ ™ *, ^ ^, _{he V} o _ne inelectric circuit, and 6 so that me oug

Fig. 3 the overall view of an electromagnet! - remove other. . Excitation current in the

S = JKSBL "" ^{SChalten VOn} "* ^elektri " * SpS ^ ^W St ^ rSre? Ausefnand _e rfahren the The electromagnetic device according to F i g. I Flußleitbügel 5 ^and * _{0 expensive} Flußleitbügel f contains a coil 1 for magnetization, which on V ig- i ^ζ * ψ ™ , fine ek 'Irish circuit,

a cylindrical housing 2 with end walls 3 and 6 to the Senateneine * el ^ ns and 4 made of insulating material, in w lchen, ferro- ao which at their e ^ina ' ^1cle '", Sutücke _{7 and} 8 on magnetic, magnetically controlled flux guide bars 5 and 6 ends ™ »^^ J ^ S ^ minimal ,, are housed. The outer ends of the flux-guiding ways, the ^{total of which is} ' ^a ^. ^, Jf the dowels 5 and 6 are not unevenly clamped in the end walls 3 and 4 of the air gap free ends while maintaining a loading a ₅ 'i of the coil 1-level "2" ^ ", agreed air gap overlap Λ ^ _{5 and 6 at.} the magnetically controlled F »» lead »B ^e ^

The air gap Λ is chosen so that on the one hand it increases the current in the coil ι ν ™ * slightly exceeds that air gap in which and will then be, further increase in current again as in the known devices under the We- separated from each other c _C durable electrical -

35 To increase the number of dialable Oe ^ tion of the magnetically controlled Flußleitbügel are made by Irish electricity can, on the other hand, however, smaller than that Ab- according to FIG. 3

stand is, in which a magnetic interaction ends in place of the _lic8t -n- _hpn elastic under Flußleitbügel S and 6 practically ceases. which the free ends of "lichen elasmchen un

The device described works as follows- 30 magnetic contact strips 9 and><»™ u a measure: When a current flow begins in the certain distance from> the B ^ 'n in coil 1, the magnet-controlled Flußleit- while the other Enderι this!" Rw "n temple 5 and 6 throughput of two magnetic fluxes end walls 3 and 4 of the housing! stan ^ ben. sets. the first flow, de- in Fig. are dot-dash lines. 1 to ^Re gf '""g ^ j ^ SnS _u nd 6 and _Qe n, penetrates the two magnet- ^{controlled. 40 magnet-controlled nutI} ^ ShenX ends of the flux guide bars 5 and 6 and justifies the air gap 6 between the flux guide bars in their contact strips J and 10 via ends reaching into their outer walls If you carry the device through the overlapping zone, an electromagnetic magnetic rod 11 and U, whose external force of attraction mixes the magnetically controlled sockets 13 and 14 with the nut guide bows 5 and 6. The second flow, which flows into 45 end walls 3 and 4 of the housing 2 emgeseU F i g. 1 is shown in dashed lines, penetrates each of the separately non-metallic eccentrics 15 and 16 attached to the inner free ends of the malnet-controlled flux guide bars 5 and 6. »™. and sees an electromagnetic force, which by rotating the rods 11 and 2wdj Vt r pushing the FluEleitbügel S and 6 to trigger a turning of the Esze «» "IS and 16 achieves and seeks a. 50 Regulation of the gc

1 sheet of drawings

Claims (5)

1 2 clocks trained free ends of the magnet claims: controlled Flußleitbügel such an air gap that 1. Electromagnetic device for over- flux guide bars when a certain monitoring, control and protection systems are reached, the excitation current in the coil is touched and, in the case of wider circuits, two elongated magnets are held in this position and are held in place in a coil 5 terer current increase , while the magnet-controlled flux guide bars diverge, their mutually disconnected flux guide bars, ^eret ^ f ¹ «« ⁵ > ^mer turned ends are clamped, while current is drawn in the coil (ttoA.-l'atent, their free ends on the inside of the coil overlap and document 2 289 830). In the de-energized state of the coil in a state of ίο The opening or closing of the distance from each other, determined by the flux, the contact formed when over or durchgekennzeicbnet.daßder gap (δ) falls below only a single given between the overlapping free Ends excitation current value limits the usability of the flux guide bar (S, 6) is just so large that the device can be used as a simple relay that switches the ends when the excitation current is switched on 15,
under the action of attractive magnetic The invention is based on the object of initially being able to move forces towards one another, of making the device of the type mentioned at the beginning more versatile without contact being able to take place, and of making it usable. with a wide increase in the current below the This object is achieved according to the invention Effect of overcoming the forces of attraction- ao resolved that the gap (Λ) between them is about the repulsive magnetic forces due to the lapping free ends of the flux guide bars Magnetic saturation of bracket sections is great that the ends when switching on de> outside of the overlap area again excitation current under the effect of attractive ma- are removable from each other. magnetic forces can initially be moved towards one another 2. Electromagnetic performance according to Anas are without contact being able to take place, and Claim 1, characterized in that for further increase of the current under the Wirwend the arrangement as a switch that overcomes the magnetism of the attractive forces Flußleitbügel (5,6) to their colliding magnetic forces as a result of the magnet facing overlapped ends non-magnetic table saturation of bracket sections outside Wear contact piece (7, 8) whose total thickness 30 of the overlap area again entfür each other a touch of the Fißleitbügel (S, 6) can be removed. whose closest possible approximation is sufficient. Starting from the excitation current at minimum 3. Electromagnetic direction after the gap between the flux guide bars is then found 2, characterized in that the may with an increase as well as a decrease Gnet-controlled Flußleitbügel (5, 6) on their 35 of the excitation current a divergence of the flux from one another facing overlapped ends of the diversion bracket instead. have savings in the ends of to- This training establishes the possibility of the additional elastic non-magnetic contact device to use as a switch by how strip (9, 10) with such a spacing according to a special embodiment of the invention submit that a contact is made when approaching, the magnetically controlled flux guide on their tion of the Flußleitbügel (S, 6) guaranteed. facing overlapped ends unmagnetic 4. Electromagnetic device according to table wear contact pieces, the total thickness of which claim 3, characterized in that for a touch of the flux guide bow with the adjustability of the distances between the magnet as close as possible is sufficient,
controlled Flußleitbügeln (5, 6) and the additional 45 The particular advantage over the known borrowed non-magnetic contact strips (9, 10) switching device is that two exciters between the coil (1) and the contact strips close or open the current values of the (9, 10) non-magnetic elements (11, 12) with flux guide bows can cause contact formed by non-metallic eccentrics (15, 16), whereby when a lower current is reached. 50 value from below a contact closure and 5. Electromagnetic device after switching on with further increase in current when reaching a claim 1, characterized in that the same upper current value a contact opening takes place, used as changeable capacitance. To two electrical circuits in dependence to be able to switch from the excitation current in the coil, 55 have the magnetically controlled flux guide in Further development of the invention at their mutually facing overlapping ends recesses, in The invention relates to an electromagnetic which the ends of additional elastic unmagne device for monitoring, control and protection tables, contact strips with such a spacing Systems of electrical circuits from two into one 60 reaching into one, making contact when approached Coil arranged, elongated magnetically ensures the flux guide bow. For adjustability controlled Flußleitbügeln, whose spacing apart from each other between the magnet-controlled flux walls Ends are clamped, while their guide bars and the additional non-magnetic Coil inner free ends overlap and are in the contact strip between the coil and the currentless state of the coil in a certain 65 contact strip non-magnetic elements with non-spacing stand from each other. metallic eccentrics arranged. In a known device of this type, however, it is also possible, in particular, for the protruding in the case of a currentless coil between the as a device without contact pieces or contact strips