DE7241590U - Switchgear cubicle of a switchgear based on the double-circuit breaker method - Google Patents

Description

Siemens Aktiengesellschaft Erlangen, 16.1ο.1973 Ii Berlin and Munich ■ '* "Werner-vpn ~ ßdep.isns-S tr.

Our sign:

VPA 72/3265 Bec / Bes

- "Switchgear cubicle of a switchgear using the double-circuit breaker method"""

The invention relates to a switchgear cell of a switchgear using the two-circuit breaker method Retractable mating contact pieces arranged on each phase outgoing feeder for retractable contact pieces of mobile switches, at least one current transformer carrying a retractable counter contact piece and connected to a cable outlet, as well as each Stutzern fixed on a plate, each of which carries one of the remaining entry counter contact pieces.

A switching cell is already known which has the features specified at the beginning and is equipped with a second, Switchgear cubicle arranged on its back to form a structural unit for a switchgear based on the two-circuit breaker method can be united. In the known switching cell, however, the supporters and the or the current transformers are not interchangeable. This has a disadvantageous effect if the current transformer (s) the place of supporters or the supporters the

Place of current transformers.

A switchgear is also known in which switchgear cells are located in the adjoining area of two back to back A so-called bushing converter is arranged in a switchgear based on the two-circuit breaker method. the Ends of the implementation of the transducer are designed as retractable counter contact pieces, one of which in the one and the other protrudes into the second switching cell. Tulips are molded onto the housing of the current transformer, which grip the insertion mating contact pieces = the current reversing

The cable connection is used. When using bushing converters, the distances are back on The switching cells at the back are tied to the dimensions of the converters. The switching cells can essentially can only be installed at the final installation site and adjusted with the assigned switches. The subsequent Relocating the converter from one phase of the system to another phase is cumbersome and required a lot of work. If the switching cells are to be converted to single switching cells, the Use of bushing converters excluded. The entry counter contact pieces previously assigned to the bushing converters must then be attached to the switchgear cells in a different way (DT-PS 1 258 5o7).

It is also known a switchgear that differs from

the aforementioned switchgear essentially only differs in that the bushing converter used here instead of an outlet to the cable connection has two outlets, so that each switch cell can be provided with a cable connection (DT-OS 16 4o 867).

It has also been proposed to use so-called standard current transformers instead of bushing transformers in switchgear based on the two-circuit breaker method. Standard current transformers are those that are listed according to certain agreements (e.g. DlN), for example according to standardized sizes. ^A n depending on the series voltage and current strength. With this use of v:> n standard current transformers, the electrical connection of the entry counter-contact pieces assigned to each current transformer is arranged outside the current transformer in such a way that it penetrates the electrical connection of the current transformer and the cable connection in an isolated manner or is led past it laterally. The electrical connections of the current transformers to the cable connections and the entry counter contact pieces are surrounded by insulating material housings which are matched to the respective spacing of the switching cells. Corresponding insulating material housings must be kept ready for different distances, which makes production and storage more expensive. The assembly of the switching cells is also essentially only possible at the final installation site. The conversion of the

Switching cells on single switching cells is still cumbersome, although the standard current transformers can be reused.

It is therefore the object of the invention to create a switch cell of the type mentioned at the outset that is independent largely preassembled at the factory from their later distance to a switching cell arranged on their back can be. Also the adjustment of the single counter contact pieces with the assigned switches or their Entry contact pieces should already be possible at the factory ^ Furthermore, the current transformer (s) should be subsequently can be assigned to any phase of the switching cell without any major difficulties. In the end should the cell in a simple way to a simple switch cell can be converted. Parts common to two cells should be largely reusable be.

The stated object is achieved in that the current transformer and the plates of the supports are interchangeable are arranged on the back of the switchgear cubicle and that the supports and the current transformer are identical to one another Wear insulating hoods, which the sides facing the cell sides and cell fronts are their carriers include and by means of molded tulips enclose the associated Einfahr Gegenkontakcstück and further the assigned cable connections and / or between the

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Current transformer and the associated retractable counter contact pieces as well as electrical connections running between the current transformer and the cable outlet assigned to it cover. Such a design has the advantage that the switching cell, regardless of their distance to a switching cell arranged on its back, can be largely pre-assembled at the factory. Only the electrical connection of the counter contact pieces assigned to the current transformers must be at the installation site be adjusted. It is also advantageous that the adjustment of the entry counter contact pieces with the switches or with their entry contact pieces already made at the factory can be. The current transformer (s) can subsequently be assigned to any phase of the switching cell as it can be exchanged for a support without difficulty. Additional fasteners or recordings for fasteners such as screws o the current transformer is identical to the way in which the plates are fastened. A conversion of the switch cell to one A single switch cell is easily possible. The only thing that is not required is the electrical connection of the Retractable counter contact pieces assigned to each current transformer.

An expedient design is that the electrical connection of each current transformer with the associated Elnfahr Gegenkontaktstücke consists of a rail which penetrates the back of the switchgear cubicle and

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at each end a connecting rail: to an entry counter contact piece. Only the rails must be adapted to the final installation site of the switchgear cubicle. All other cell components are regardless of the distance between the back of the switching cell and a back of a second switching cell. Will uie Switch cell for any reasons If a single switchgear cubicle is converted, only the rails are not reusable »while all other cell components are also suitable for use in individual switchgear cubicles. Conversely, single switchgear cubicles can be easily converted by adding the rails in switchgear using the two-circuit breaker method.

It is also expedient that for the electrical connection each current transformer3 and the one assigned to it Cable connection one at one end to the current transformer connected rail piece and at the free end of which a bracket is provided, which connects the rail of the associated electrical connection of the entry counter contact

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pieces encompassed and connected to the cable connector.

Finally, it is expedient that between the bracket and the cable connection one end of a power line rail is arranged, which is the rear wall of the switchgear cubicle penetrates and at its free end for connecting an earthing device or another cable connection is trained.

An embodiment of the subject invention is shown in the drawing, which is a side elevation of two Switch cells standing back to back, partly in section, shows.

A switchgear according to the two-circuit breaker method consists of two backs 1a to back ^ i 2a standing Switching cells 1,2. These have entry counter contact pieces 3, 4 for entry contact pieces (not shown) at each phase output of mobile switches, also not shown. Furthermore, the switching cells 1, 2 a common current transformer 5. In the example shown, the current transformer 5 is in the switching cell 2 arranged. It can be assigned to any phase there. But it is at your discretion, the current transformer 5 to be arranged in the switching cell 1. The switching cells 1, 2 can also have several common current transformers exhibit. In this case it does not matter whether the current transformers are only in one or in one and the other

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the other switching cell are arranged. Any current transformer is electrical with one entry counter contact piece 3, 4 of the switching cells 1 or 2 and a cable connection 6 tied together.

On each current transformer, in the example shown on the current transformer 5, there is a retractable counter contact piece, here the entry counter contact piece 4 attached. The remaining entry counter contact pieces, e.g. the entry counter contact piece 3, are supported by supports 7, each of which has a contact piece-free end face with a plate 8 is provided.

\ The current transformer (s) 5 and the plates 8 of the supporters

\ 7 are interchangeable on the back 1a resp.

\ 2a of the switching cellsi or 2 arranged. The supporters 7

χ and the current transformer or transformers 5 carry one another

I; same insulating hoods 9. The insulating hoods

close those to the cell sides and the cell fronts directed sides of their carrier and cover the cable connections, in the example shown the cable connection 6 and the electrical connections. Furthermore, the iso-

'Lierstoffhauben 9 tulips 9a, which the assigned.

Enclose the counter contact pieces 3 or 4.

For the electrical connection of each current transformer, e.g. with the associated retractable counter contact pieces 3, 4 is

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a rail 1o is provided, which the back 1a, 2a of Switching cells 1, 2 penetrates and at each end a Ver binding rail 11 or 12 to a drive-in counter

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For the electrical connection of each current transformer 5 and the cable connection 6 assigned to it, a is on one end of the rail piece 13 connected to the current transformer 5 and a bracket 14 provided at its free end. The bracket 14 engages around the rail 1o of the associated electrical connection of the entry counter contact pieces 3, 4 and is connected to the cable connection 6.

Between the bracket 14 and the cable connection 6, one end of a power line bar 15 is arranged, which the rear walls 1a, 2a of the switching cells 1, 2 penetrates. The power line bar 15 is at its free end for connection to a grounding device, not shown, or a further cable connection, also not shown educated.

4 claims for protection
1 figure

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Claims (4)

ft e ■> Protection claims 1.Switching cubicle of a switchgear using the double-circuit breaker method, with retractable counter contact pieces for retractable contact pieces arranged at each phase outgoing feeder of mobile switches, at least one, a retractable counter contact piece carrying, with a cable outlet connected current transformers as well as supports each attached to a plate, each of which is one of the rest Carrying entry counter contact pieces, characterized in that the current transformer (5) and the plates (8) of the supports (7) interchangeably on the back (1a or 2e) of the switchgear cubicle (1 or 2) are ordered and that the supporters (8) as well the current transformer (5) wear the same insulating material hoods (9) which di ·: u the cell sides and cell fronts enclose facing sides of their carriers and by means of molded tulips (9a) enclose the associated entry counter contact pieces (3 or 4) and also the associated cable connections (6) and / or between the current transformer (5) and the associated entry counter contact pieces (3, 4) and electrical connections running between the current transformer (5) and the cable outlet (6) assigned to it cover. 2. Switchgear according to claim 1, characterized in that the electrical connection each current transformer (5) with the associated - 11 - ? M1IMiti * . W- | Entry counter contact pieces (3, 4) from a rail (1o), which penetrates the back (1a, 2a) of the switching cell (1,2) and connects to each earth s rail (11 or 12) to an entry counter contact piece (3 or 4). 3 = switchgear according to claim 1 and ?, Thereby I net that the electrical connection each current transformer (5) with the cable connections (6) assigned to it from one at one end with the current transformer (5) connected piece of rail (13), at the free end of which a bracket (14) is provided, which the rail (1o) of the associated electrical connection of the retractable counter contact pieces (3, 4) engages and connected to the cable connection (6) is. 4. Switchgear according to claim 1 to 3, characterized marked that between the bracket (14) and the cable connection (6) one end of a power line rail (15) is arranged, which penetrates the rear walls (1a, 2a) of the switching duties (1,2) and formed at its free end for the connection of an earthing device or a further cable connection is. 72415mm.