DE2013757C - System for supplying alternating current to a device which can move along a path - Google Patents

Description

So there are three three-phase line systems up to the tapping point, each one negligibly small Have reactance.

Since practically only ohmic voltage gradients occur in this system, a single feed point is used be sufficient to supply several hundred meters of busbars.

For economic reasons, the conductor material the additional conductor 4 to 9 aluminum preferred. However, aluminum is not suitable as a sliding surface material for making contact with the sliding contacts, which is why the contact rails 1, 2, 3 in any case a sliding surface made of another material, e.g. B. copper or stainless steel should have. In that part of the cross-section which does not form the sliding surface can of course also be made of aluminum to be used.

In addition to an effective use of the conductor cross-section a power delivery system of this type will give an improved power factor by comparison with previously known busbar systems for the present purpose.

With a single-phase system you will use two contact bars, each with a small conductor Distance from the rail that is connected to the respective other phase of the system is. As with a three-phase system, the conductors ίο of the same phase are made through a number of cross-connections connected to each other, also here at intervals of about 7 to 14 m.

Although in the present description it is always mentioned that in the vicinity of each contact rail a ladder should be arranged for each of the remaining phases of the system, it goes without saying that each of these additional letters can be composed of several parallel-connected conductor strands.

1 sheet of drawings

Claims (3)

According to the invention, this disadvantage is remedied by the fact that along and at a small, insulating distance from each contact bar other potentials 1. System for alternating current supply to an Ien assigned conductor with an electrically equivalent device movable along a path, e.g. B. 5 cross-section in one of the number of remaining contacts electrically driven crane, laid over con-rails corresponding number and with the Contact rails of different potential, which are connected to the contact rail with the same potential via transverse movement path arranged along and set up connections at points distributed along the track, with pantographs at which are electrically connected. To cooperate with each other, thereby g ίο In this way it can be achieved that the indicates that along and to a small extent, the reactance of the busbar system is negligible insulating distance from each contact rail becomes small. Of course, this applies independently (1, 2, 3) conductors assigned to other potentials on the number of phases and thus the contact (4.5; 6.7; 8,9) with electrically equivalent rails. Cross-section in one of the number of other con-15 The cross connections on the number of clock rails laid and joints between the conductors and contacts laid in series of the contact rails with the same potential. It is advantageous to make any contact about Cross connections (10, 11, 12) along the rail and the conductors arranged adjacent to it Rail distributed points are electrically connected. a composite line section on which- 2. Installation according to claim 1, characterized in that the length of the contact bar is marked in part and denotes that the cross connections (10, 11, 12) adjacent conductors completely surrounded by insulating material are at the joints of the conductors laid in series. (4,5; 6,7; 8,9) and contact bars (1,2,3) an- The object of the invention is arranged in the drawing are. schematically arranged for a three-phase system 3. Plant according to claim 2, characterized as a schaulicht, since in plants of the present type a shows that every contact rail (e.g. 1) and three-phase supply is common. In the drawing the conductors arranged adjacent to it (e.g. shows 4,5) a composite line section Fig. I a schematic cross section of the (b) form, on the length of which the contact rail busbar system together with the drawn cross section and the adjacent conductors entirely of 30 connections and Insulating compound (ζ. B. 13) are surrounded. F i g. 2 an overview circuit diagram of the system. As a consumption unit on the movable input direction (the crane) is indicated in the drawing for the sake of simplicity, only one connected to the pantographs 15 to 17 35 motor M. The invention relates to a system for changing As shown in the drawing, are longitudinal and in Power supply to a small distance from the contact rails 1, 2 and 3 movable along a path, e.g. an electrically driven one of the phases R, S or Γ each two conductors 4 and 5 crane, via contact rails different potentials or 6 and 7 or 8 and 9 relocated. The two conductors adjacent to a contact tials, which are arranged along the path of movement 40 rail, are each set up to interact with current collectors on the remaining phases of the three-phase system of each device. closed. Each rail unit thus contains the three Since such tracks can be very long, up to several hundred phases R, S and T of a three-phase system, but many meters, the contact rails in the three rail units are usually interchanged in sections, usually with a length of 45. At suitable intervals along the from about 7 to 14 m, divided. It is desirable, if possible, the three conductors of the same are to be provided with few connection points, but connected to each other via cross connections. The exercise sections don't be too long. For the insulation of each rail unit, care must be taken to ensure that there is insufficient play for thermal expansions that occur 50, as at 13, which is why these rails are shown in FIG. The mutual spacing with several expansion connections provided α (FIG. I) of the busbars is to be increased in this case. Rail arrangement is the same from an electrical point of view With systems of this type one is practical, but can be chosen as usual, so reasons mostly rely on the contact 55 z. B. 0.20 to 0.40 ni. If necessary, the length b of the rails can be attached at relatively large intervals, ie rail sections can be selected as usual, ie approximately 0.20 to 0.40 m comfortably. This is about 7 to 14 m, and the cross connections can be relocated to the joints in AC systems and long walkways,
now a high reactance of the rail system. Since it is assumed that all conductors I up to and including If it is often a question of high currents, for example 60 borrowed 9 electrically equivalent conductor cross-sections nuf-2 (K) OA or more, this means that up to the point, the currents on the three conductors of the consumption point will have significant voltage gradients the same Distribute phase by cutting in the cross links. In order to reduce the voltage gradient to acceptable values in the vicinity of the tapping point for currents flowing, relatively large values are to be used, as indicated in the diagram in FIG. Required by cross-conductor rails, and the greatest part of the rail system is therefore often laid between several rail systems in parallel, and the storage pin, 1 and your take-off point // wernieislens must for a feed at several points so the rail in each rail unit I _K .. ,, Care must be taken along the line of sight. / _{s /} , and /; ·,., be balanced against each other. It he-