FR2725828A1 - MULTIPLE, COARSE SELECTOR STEP SELECTOR FOR ONE STEP SWITCH - Google Patents

Abstract

a) Coarse, multiple selector step selector for one step switch. b) Selector characterized in that, in the first plane (I) of the fine selector (FW), there are the fine selector contacts (1, 3, 5) of odd order, provided in duplicate, each time in opposition, in the second plane (II) of the fine selector (FW) we have the fine selector contacts (2, 4) of even order and thus the other fine selector contact (K), in duplicate, each time in opposition, each time a contact bridge (Br1, Br2) of the fine selector (FW) and another contact bridge (Br3, Br4) of the coarse selector (GW) being movably coupled to each other, and the driving device is made so that 'after each time a half-rotation of one of the contact bridges (Br1, Br2) of the fine selector (FW), there is a switching step of the other contact bridge (Br3, Br4) coupled with this ci, of the coarse selector (GW1, GW2) in the same switching direction.

Description

"Coarse selector, multiple selector switch, for a switch

  The invention relates to a step selector for step switch of a control transformer consisting of a fine selector, with phase in two

  plans, selector contacts, fixed purposes, distributed

  a circle and connected to the winding studs of a stepped winding of the stepped transformer and,

  in each plane, these pads can be selected separately.

  by a rotating contact bridge, the load outputs of the two contact bridges leading to the fixed switching contact of a load switch, further comprising a multiple coarse selector, itself composed of

  two coarse selectors, each of which

  respective fixed coarse selector switches, electrically connected with identical winding pads of a coarse winding of the regulating transformer, and whose different coarse steps are

  equal to each other and are granted on the winding of gra-

  fine, and may each time be selected separately

  by another contact bridge, that other bridge of

  contact of the first coarse selector being electrically connected

  only to another fine selector contact, and the other contact bridge of the second coarse selector being connected to the

  basic connection of the winding of fine steps,

  additionally taking a training device for

the step selector.

  Such taps or step selectors are known according to the technical documentation "Documentation for particular embodiments of pin selectors-

  switch switches for switching large steps

  sisters, multiple "of the plaintiff bearing the reference

VK04 / 02.

  A large number of operating positions are required for a particularly fine adjustment of the voltage which can only be achieved if necessary.

  a stepped, multiple step switching.

  For example the use of a coarse winding with 5 steps and a stepped winding with

  18 pins makes it possible to reach 107 operating positions

  is lying. The usual fine selectors usually comprise 10

  and often 12, 14, 16 or even 18

  fine readers, divided into two planes per phase.

  In some cases, however, provision must be made for

  step switches, particular for such trans-

  stepped tiered coil trainers, which include

  There are certainly several coarse steps but the winding of fine steps has only a small number of studs. Such transformers allow adjustment (however with only a coarse frame) in a

  globally important regulation range.

  If you connect a conventional step selector, as shown above, with 10 to 18 selector contacts

  end and a coarse multiple selector, on such a transfor-

  the number of switchable steps for the se-

  end reader is greater than the number of steps of the winding end, there are necessarily empty steps during the operation of the end switch, connected; it means that you have to operate and go through cycles of

  switching without the electrical connection of the transformer

  step and thus the voltage steps

  do not change. Such a situation is not desired

  for electrical and cinematic reasons.

  It is an object of the present invention to develop a coarse, multiple, coarse selector step selector

  corresponding to the type defined above, which can be

  on a stepped transformer (or transformer

  several coarse steps, reducing to

  nimum the empty stands, and that has fewer pads

  for stepped winding than the grading selector

  dins does not have fine selection contacts.

  For this purpose the invention relates to a selector

  number of blocks corresponding to the type defined above,

  in that in the first plane of the fine selector, we have the odd-order fine-order selector contacts, provided in duplicate, each time in opposition, in the second plane of the end selector we have the fine-order selector contacts and thus the other fine selector contact, in duplicate, each time in opposition, each time a contact bridge of the fine selector and another contact bridge of the coarse selector being coupled movably with each other, and the driving device is realized so that after each half-rotation of one of the contact bridges of the fine selector,

  there is a switching step of the other bridge of con-

  tact coupled with it, the coarse selector in the

same switching direction.

  The present invention will be described below at

  with the help of an exemplary embodiment represented in the drawings

  in which: - Figure 1 shows a switching diagram of a step selector composed of a coarse selector switching four pins of a coarse winding and a fine selector that switches five pins of a stepped winding end, - Figure 2 shows the schematic layout

  different planes of the fine selector and the big selector

  sier, multiple, of the step selector according to the invention,

  FIG. 3 represents a table of the

  of the step selector shown in FIGS. 2 and 3; FIG. 4 shows a block diagram of a

  circuit switching coarse steps, multiple sec-

the state of the art.

  Figure 4 shows in general the state

  of the technique mentioned above. A turnover of transformations

  consists of a main winding St, without

  din, a stepped winding G with several

  plots and a thin tier winding F with

  several blocks. The different blocks of big bleachers

  Steps of a coarse winding can be connected to the base connection of the stepped winding, which in turn switches to the different studs to allow the adjustment of as large a number as possible

of voltage steps.

  Figures 1 and 2 show, according to a representative

  diagrammatic representation of a step selector according to

  in its electrical switching on a winding

  bleachers, and the layout of the different selection plans

tor.

  The winding of steps is subdivided into a stepped winding F with winding studs

  Fl ... F5 with identical staggering, and a winding with

  coarse G with coarse winding pads G7 ... GlO also having identical staggering. The winding terminals Fl ... F5 are electrically connected to the fine selector contacts 1 ... 5 of a fine selector FW placed

in two planes I, II per phase.

  According to the invention, in the first plane I, we have

  the fine-tuned selector contacts 1, 3, 5, of odd order, each

  that twice in duplicate, that is to say that they are arranged in opposition to a distribution in a circle; these fine selector contacts can be switched by a first bridge of

  contact Brl which the output load is connected to a con-

  SKI switching tact of the LU load switch which

  is indicated only schematically.

  In the second plane II according to the invention there are the fine selector contacts 2, 4 of even order and another fine selector switch K which will be described later;

  these contacts are also duplicated every time, that is,

  to say that they are distributed in a circle, in positions

  opposite views; these contacts can be switched by a

  second contact bridge Br2, the charge output of which is

  linked to a second switch contact SK2 of the switch

LU charging.

  The coarse multiple selector consists of two identical coarse selectors GW1, GW2 each having fixed coarse selector contacts 7 ... 10; that is, the two coarse selectors switch

  the same pads G7 ... G01 of the coiled winding

G.

  The two coarse selectors GW1 and GW2 have

  tooth, for switching, other Br3 or Br4 contact bridges. The charge output of the other contact bridges Br3 of the first coarse selector GW1 is electrically connected to the base connection 6 of the stepped winding F; the other contact bridge Br3 of the second coarse selector GW2 is electrically connected to the other selector contact

  end K located, according to the invention, in the plan II of the selections

  contact contactors 2, 4 of even order.

  The entire selector of pads is actuated by a drive device known per se such as that described for example in the document DE-GM 93 08 424; this training device operates each time in common a

  contact bridge Br1 or Br2 of the fine selector and one of the

very Br3 or Br4 contact bridges.

  According to one characteristic of the invention, this actuation is done so that after half a rotation of the corresponding contact bridge of the fine selector, there is a switching step in the same switching direction

  for the coarse selector operated in common.

  Figure 4 shows the switchboard of the step selector according to the invention resulting from this operation. It appears as well as for a rotation

  complete the fine selector, with all

  fine selector tacts and so of all the takings of the winding of fine steps F, twice, one reduces to

  minimum otherwise undesirable vacuum switching.

  In the embodiment chosen, the winding

  The coarse steps are granted according to the

  stepped bearing so that the tension between two neighboring studs of the coarse winding G is

  equal to the voltage corresponding to the entire winding

  In the exemplary embodiment shown, we have

  24 different positions to achieve 21 posi-

  different operating conditions, that is to say 20

  dins of tension. In these conditions, there are only three empty commutations; when switching between positions 6 and 7, between positions 12 and 13 and between positions

  18 and 19, the set voltage step does not change.

  It is also possible, alternatively, to

  string coarse step winding G on the winding

  Finish step F so that the tension between two studs

  neighboring coarse winding G is exactly

  equal to the sum of the voltage at the terminals of the

  the winding of the fine-pitch winding F and the voltage between two neighboring studs of this thin-tier winding F. In this case, there is absolutely no switching at all.

  empty; it is thus possible to carry out 24 different voltage steps

  for the 24 operating positions.

  Finally, the choice of the two tuning possibilities that will be selected depends on the construction of the stepped transformer to be switched, the number of winding pads and the number and voltage values of the

steps of tension to realize.

Claims (1)

R E V E N D I C A T I 0 N   Step selector switch for grading switch   dins of a control transformer consisting of a selector   end, with in phase, in two planes, contacts of   reader, fixed ends, distributed in a circle and connected to the studs of the windings of a stepped winding of the stepped transformer and, in each plane, these pads   can be selected separately by a bridge of   rotational tact, the load exits of the two con-   tact leading to the fixed switching contact of a charge switch, further comprising a multiple coarse selector, itself composed of two coarse selectors, each of which has respective fixed coarse selector contacts, electrically connected with coils of winding , identical, of a stepped winding   coarser of the regulating transformer, and whose differences   rents coarse steps are equal to each other and are   on the winding of fine steps, and may each time be selected separately by another contact bridge, this other contact bridge of the first coarse selector being electrically connected to another contact of   selector, and the other contact bridge of the second selec-   coarse cable is connected to the base connection of the   thin step bearing, further comprising a device   drive to operate the step selector,   characterized in that in the first plane (I) of the fine selector (FW) there are the fine selector contacts (1, 3, 5)   of odd order, provided in duplicate, each time in opposition   In the second plane (II) of the fine selector (FW), the fine-order selector contacts (2, 4) of even order and the other fine-selector contact (K), in duplicate, each in opposition, each time a contact bridge (Br1, Br2) of the fine selector (FW) and another contact bridge (Br3, Br4) of the coarse selector (GW) being coupled movably with each other, and the driving device is realized so that after each half-rotation of one of the contact bridges (Br1, Br2) of the fine selector (FW), there is a switching step of the other contact bridge (Br3, Br4) coupled with this one, the coarse selector (GWl, GW2) in the same switching direction.