PL8022B1

PL8022B1 - Rotating regulating resistor, especially for multi-phase induction motors with centrifugal starters.

Info

Publication number: PL8022B1
Application number: PL8022A
Authority: PL
Filing date: 1924-04-02
Publication date: 1927-12-31

Description

Opornikom wirujacym obecnie jnadaja zwykle postac zwinietych w tej samej luib w iróznych plaszczyznach wjsteg metalom wych o warstwach odizolowanych od sie¬ bie, W opornikach wielofazowych, stosowa¬ nych zwlaszcza w silnikach indukcyjnych z rozrusznikami ddsrodkowemi, kazdej fa¬ zie sluzy izazwydzaj oddzielna wstega o koncach równiez izolowanych, niezaleznie od zacisków obwodów; pomiedzy koncami wsteg umocowane isa zaciski do prowadze¬ nia pradu.W mysl wynalazku niniejszego wstegi oporowe wszystkich faz zostaja polaczone w jeden wspólny pas i zwiniete spiralnie w tej samej plaszczyznie z zastosowaniem w razie potrzeby iogniwek .izolacyjnych.Zalaczony rysunek wyobraza dla pnzy- kladu wynalazek w zastosowaniu do wir¬ nika trójfazowego z rozrusznikiem trój¬ stopniowym, przyczem fig. 1 przedstawia ogólny schemat polaczen, a fig. 2 odpowia¬ dajaca mu wstege oporowa w rozwinieciu, Litera a oznacza Uzwojenie wirnika, li¬ tery b, c ii d trzy czesci oporu z punktem zerowym e i zaciskami /, g, h, prowadza- cemi do styków i, k, m lacznika odsrodko¬ wego n.Wstega oporowa (fig. 2), która nalezy sobie pomyslec izwinieta, prlzylaczoina jest poczatkiem swym r do fazy / uzwojenia a wirnika; w punktach h, g, / mieszcza sie zaciski odpowiadajace faizie 7, podczas gdy zacisk q polaczony jest z oslona o. Tu równiez faza I przechodzi w faze II, w której zaciski najsitepuja w kierunku prze¬ ciwnym /, g, h. Pomiedzy zaciskami h fa¬ zy 7/ i III wstega metalowa jest przerwa-na-praynitowana tasma izolacyjna, nip. az¬ bestowa p. Wreszcie zastepuje opornik fa¬ zy 77/'z zaciskami 'idacemu w kolejnosci h—g—/. Koniec wewnetrzny s zwinietej wsteigi znowu jest polaczony z oslona o, która luzy za punkt teerowy e calego ukla¬ du opornika.Opornik trójfazowy sklada sie przeto z dwu wsteg oporowych zwiazanych jednem tylko ogniwkiem iziolacyjnem p w pas cia¬ gly bez koniecznosci stosowania na ich koncach tasiem izolacyjnych.Dla moznosci umieszczenia zacisków do odprowadzania pradu ize zwinietej spi¬ ralnie wstegi w punktach konstrukcyjnie dogodnych nie potrzeba tu przeto przery¬ wac wstegi oporowej i wprowadzac paska metalowego o wysoikiem przewodkiiotwie, (np. miedzianego). Wystarczy natomiast wstege oporowa zaopatrzyc w odpowied- niem miejscu w pasek miedziany, który wytworzy krótkie zwarcie i nastepnie prad odprowadzac z odpowiedniego miejsca te¬ go wlasnie paska. Albo tez pasek miedzia¬ ny dolaczany do punktu odprowadzania pradu wyprowadza sie w odpowiedniej izolacji w spirali az do miejsca, gdzie za¬ chodzi on nazewnatrz. PL PLNowadays rotating resistors usually have the form of coiled in the same or different planes in several layers of metals with layers insulated from each other. also insulated, independent of the circuit terminals; between the ends of the bands and the terminals for conducting the current. In the concept of the present invention, the resistance bands of all phases are combined into one common belt and coiled in a spiral in the same plane with the use of insulating cells if necessary. When applied to a three-phase rotor with a three-stage starter, Fig. 1 shows a general connection diagram, and Fig. 2 shows the corresponding resistance band in the unfolding, Letter a denotes the rotor winding, letters b, c and d are three parts of the resistance with the zero point e and the terminals /, g, h, leading to the contacts i, k, of the centrifugal coupler n. Resistance strip (Fig. 2), which should be thought about and the vignette, the tangle is the beginning of its r to phase / windings and rotor; in points h, g, / there are the terminals corresponding to phase 7, while the terminal q is connected to the shield o. Here also phase I changes into phase II, in which the terminals are in the opposite direction /, g, h. Between the terminals h of the phases 7 / and III metal band is broken-in-threaded insulating tape, n and p. The azobast p. Finally, it replaces the phase resistor 77 / 'with terminals' in the sequence h-g-/. The inner end of the coiled ribbon is again connected to the sheath, which loosens behind the teer point of the entire resistor system. A three-phase resistor therefore consists of two resistance bands tied only by one isolating link of the continuous belt without the need to use a tape at their ends. In order to be able to place the clamps for draining the current and from the spirally wound ribbon at points structurally convenient, it is not necessary here to break the resistance ribbon and insert a metal strip with a high conductor (e.g. copper). On the other hand, it is enough to provide the resistance band in a suitable place with a copper strip, which will create a short circuit and then drain the current from the appropriate place of the strip. Or the strip of copper that is attached to the point of discharge is led out in suitable insulation in the helix to where it goes to the outside. PL PL

Claims

1. Patent claims. 1. A rotating regulating resistor, especially induction motors with a centrifugal starter, consisting of: a spiral-wound resistance ribbon with insulating layers, a characteristic tern, and a continuous, spiral-wound spiral belt of all phases one plane with and, if necessary, the inclusion of insulation (ribbon) cells. 2. Resistor according to claim A method according to claim 1, characterized in that it is provided with terminals and for conducting the current, made in the form of stripes extending from the plane of the rolled-up ax hull. 3. Resistor according to claim 4. A two-phase resistor according to claim 1, characterized in that the resistance band in the part consisting of a resistance metal has a fixed cross-section. The method of claim 1, characterized in that an uninterrupted metal abutment belt is connected to both ends of the winding, having the zero point of total resistance in the center of its length. 5. Three-phase resistor according to claim The method of claim 1, characterized in that the conductive strip is interrupted only in a third of its length by the insulating strip and that the ends of the two phase windings are connected to this point. 6. A three-phase resistor according to claim The method of claim 5, characterized in that the third phase winding is connected to the free end of the longer metal resistance strip, while the center of this strip and also the free end of the shorter strip are connected to the zero point. 7. Resistor according to claim According to claim 1, characterized in that its zero point is a metal shield of the resistor, to which the appropriate terminals for conducting the current and the ends of the ribbon are connected. 8. Resistor according to claim 2, characterized in that the current-conducting strips run in suitable insulation in the spiral of the resistor to the point at which we intend to lead them out of the plane of this. 9. Resistor according to claim 2, characterized by the fact that in the event that the clamp for conducting the resistance band current falls, not in the place where we want to lead it out of the plane of the spiral, the appropriate length of the resistance band will provide a strip of of a conductive metal, such as copper, and thus short-circuits. Ak t i engesel ls chaf t B r own, Boveri & Cie. Deputy: M. Skrizypkowski, patent attorney. To the patent description No. 8022. n X3Lp / WVW 'U / ww — r / b e • www — f 4—3 .. / 77, HH + .. Figi. M a p d M / W \ M / W-y = ^ ° - L ^ AAAAAA_o = gL HWWw \ A / —ip == §5 - ^ MAAMM-fl ^ ft 9 Fig.

2. f and r 10 Print by L. Boguslawski, Warsaw. PL PL