NO794238L

NO794238L - MULTIPLE POOL SWITCHING DEVICE.

Info

Publication number: NO794238L
Application number: NO794238A
Authority: NO
Inventors: Wilhelm Kraemer
Original assignee: Bbc Brown Boveri & Cie
Priority date: 1978-12-27
Filing date: 1979-12-21
Publication date: 1980-06-30
Also published as: EP0020596B1; WO1980001440A1; DE2856187A1; IT1126596B; DE2856187C2; IT7928187A0; EP0020596A1

Description

Flerpolet omkoblingsanordning.Multipole switching device.

Oppfinnelsen vedrorer en flerpolet orrikoplingsanordning, spesielt for omkopling av en effektbryter fra en samleskinne I til en samleskinne II i. en hoyspennings-apparattavle ("Mittel-spannungs-Schaltfeld"). The invention relates to a multi-pole ori switching device, in particular for switching a circuit breaker from a busbar I to a busbar II in a high-voltage switchboard ("Mittel-spannungs-Schaltfeld").

For å tilfredsstille driftsforholdene i fordelings-, nett- og industrianlegg, kan de benyttede hoyspennings-apparattavler utstyres med enkle eller dobbelte.samleskinnér. In order to satisfy the operating conditions in distribution, network and industrial facilities, the used high-voltage switchboards can be equipped with single or double busbars.

Ved bruk av dobbelte samleskinnér er det anordnet en skillebryter for hver samleskinne. Via skillebryteren kan effektbryteren til enhver tid koples til den ene eller annen samleskinne. Effektbryterens omkoplingsmulighet til en samleskinne I eller II realiseres ved hjelp "av forskjellige omkoplingsanord-ninger. When using double busbars, a disconnect switch is provided for each busbar. Via the isolating switch, the circuit breaker can be connected to one or the other busbar at any time. The circuit breaker's switchability to a busbar I or II is realized with the help of various switching devices.

Det er således kjent en anordning med tre-stotteisolator-dreie-skillebrytere ("Dreistutzerdrehtrennern"). På grunn av de tre stotteisolatorer som kreves for hver bryterpol, tar disse skil-lebryterne forholdsvis stor plass i apparattavlen. Dertil kom-mer at omkostningene for de tre stotteisolatorene pr. skillebryter-pol, som består av hoyverdige isolatorer, er meget hoye. Thus, a device with three-stotte-insulator-turn-disconnectors ("Dreistutzerdrehtrennern") is known. Because of the three support insulators required for each switch pole, these disconnect switches take up a relatively large space in the switchboard. In addition, the costs for the three support insulators per disconnector pole, which consists of high-quality insulators, is very high.

Det er videre kjent å benytte to-stotteisolator-klaffskillebry-tere ("Zweistutzerklapptrenner") som skillebrytere for dobbelte samleskinnér. Også disse opptar en stor del av apparattavlevo-lumet, særlig på grunn av den oppklappbare skillekniv, som strekker seg fra den ene til den andre stotteisolator. Forbin-delsesledningene mellom to-stotteisolator-klaffskillebryteren jog samleskinnene samt effektbryteren dannes av ulikt boyde le- ledere» også dette gjor anordningen omfattende, ved. apparattavler med skott-sikret rom for samleskinnene, må det også anordnes en passasje for hver ledningsforbindelse til effektbryteren i samleskinnerommets platevegg. It is also known to use two-support insulator flap switch-disconnectors ("Zweistutzerklapptrenner") as switch-disconnectors for double busbars. These also take up a large part of the device panel space, particularly due to the folding dividing knife, which extends from one support insulator to the other. The connection lines between the two-support insulator-flap disconnect switch and the busbars as well as the circuit breaker are formed by differently sized conductors" this also makes the device comprehensive, wood. switchboards with bulkhead-protected space for the busbars, a passage must also be provided for each cable connection to the circuit breaker in the panel wall of the busbar room.

Til grunn for oppfinnelsen ligger den oppgave å tilveiebringe en omkoplingsanordning med enkle midler for omkopling av en effektbryter i en hoyspennings-apparattavle med dobbelt samleskinne fra samleskinne I til samleskinne II. The invention is based on the task of providing a switching device with simple means for switching a circuit breaker in a high-voltage switchboard with double busbar from busbar I to busbar II.

Denne oppgave loses ifolge oppfinnelsen ved at omkoplingsanordningen utfores etter samme prinsipp som en skyve-skillebrytér. og anordnes mellom de to samleskinnene, at hver bryterpol til enhver tid kan forbindes med en faseleder for de to samleskinnene, hvor det foreligger organer som sorger for at bryterpolen forst skilles fra en samleskinne etter at den er forbundet med den andre samleskinnen, og at hver bryterpol har en klemme for en leder. According to the invention, this task is solved by the switching device being carried out according to the same principle as a push-disconnector. and arranged between the two busbars, that each switch pole can be connected at all times to a phase conductor for the two busbars, where there are organs that ensure that the switch pole is first separated from a busbar after it is connected to the other busbar, and that each switch pole has a clamp for a conductor.

En hensiktsmessig videreforing av oppfinnelsen kan bestå i at omkoplingsanordningen ved en apparattavle med skottsikrede samleskinnerom er anordnet i et mellomrom mellom de to samleskinnerom, i forbindelse med effektbryterrommet og at de enkelte bryterpoler i begge ender er fastholdt i samleskinnérommenes vegger. An appropriate continuation of the invention can consist in the switching device for an apparatus panel with bulkhead-protected busbar compartments being arranged in a space between the two busbar compartments, in connection with the circuit breaker compartment and that the individual switch poles at both ends are secured in the walls of the busbar compartments.

De fordeler som oppnås med oppfinnelsen består fremfor alt iThe advantages achieved with the invention consist above all in

at omkoplingsanordningen ifolge oppfinnelsen i motsetning til det som^var tilfelle ved de ovennevnte pmkoplingsanordninger, hvor det måtte anordnes en skillebryter for hver samleskinne, er tilordnet begge samleskinnér. Det betyr dels at produksjons-omkostningene for anordningen kan reduseres vesentlig og dels at det oppnås en vesentlig plassbesparelse i apparattavlen. Dessuten oppnås gunstige lederforbindelser mellom omkoplingsanordningen og effektbryteren, da lederforbindelsene legges ukomplisert i mellomrommet mellom de to samleskinne-skottrom, direkte til effektbryteren, uten at de, som ved de omtalte an- : ordninger til enhver tid må ledes via en spesiell boltgjennomforing i veggen for samleskinne-skottrommene. Boltgjennomforin-I gene kan dermed falle bort. that the switching device according to the invention, in contrast to what was the case with the above-mentioned switching devices, where an isolating switch had to be arranged for each busbar, is assigned to both busbars. This means partly that the production costs for the device can be significantly reduced and partly that a significant space saving is achieved in the control panel. In addition, favorable conductor connections are achieved between the switching device and the circuit breaker, as the conductor connections are laid uncomplicated in the space between the two busbar bulkheads, directly to the circuit breaker, without them, as with the devices mentioned, always having to be routed via a special bolt through-hole in the wall for the busbar bulkheads. The bolt-through-forin-I gene can thus be eliminated.

Det er ikke behov for spesielle apparathus. Omkoplingsanbrdnin--geri er festet direkte i apparattavlen. There is no need for special appliance housings. The switching device is attached directly to the switchboard.

Et utforelseseksempel av oppfinnelsen er vist 1 tegningen og skal beskrives nærmere nedenfor. Fig. 1 er et skjematisk snitt av en hoyspennings-apparattavle med en dobbelt samleskinne. Fig. 2 er et detaljert, skjematisk sideriss av omkoplingsanordningen og en samleskinne. An embodiment of the invention is shown in the drawing and will be described in more detail below. Fig. 1 is a schematic section of a high-voltage switchboard with a double busbar. Fig. 2 is a detailed, schematic side view of the switching device and a busbar.

I fig. 1 ses et tverrsnitt av en plate-innkapslet apparattavle med en dobbelt samleskinne. Til vern mot virkning av lysbuefeil ér apparattavlen ved hjelp av skott delt opp i et samleskinnerom 1, et samleskinnerom 2, et effektbryterrom 3 og et kabel-klemmerom 4.Apparattavlen er forsynt med en utkjorbar effektbryter 5, som er montert på en bryterslede 6 og som i innkjort tilstand er elektrisk forbundet med apparattavlen via skille-, kontakter 7,8. via skillekontakten 7, forbindelseslederen 9 og bryterpolene 10 for omkoplingsanordningen 11 kan effektbryteren koples til samleskinne I eller samleskinne II. Via skillekontakten 8, en boltgjennomforing 12, en stromtransformator 13, en spenningstransformator 14 og jordingsbryteren 15 og kabelboks 16 er effektbryteren forbundet med en utgangskabel 17. Ved at jordingskniyen 18 legges inn i jordingsbryterens motkontakt 19, blir kabelutgangen koplet til jordpotensial. Omkoplingsanordningen 11 er anordnet i et mellomrom 20 mellom de to samleskin-nerommene 2,3 og mellomrommet 20 står i forbindelse med effektbryterrommet 3. De enkelte bryterpoler er på begge sider fastholdt ved hjelp av flenser 22 i veggene 21 for samleskinneromme-ne. Hver bryterpol har to kontaktstykker 23,24, som kan betjenes i motsatt aksial retning og kan bringes i inngrep med et motkon-. taktstykke 25, som er integrert i samleskinnelederen. De bevegelige kontaktstykker 23,24 betjenes over ikke nærmere viste, separate.drivanordninger som kan bestå av en elektrisk motor med gir og et omsetningsledd som består av en tanhstang og et drev. In fig. 1 shows a cross-section of a plate-encased switchboard with a double busbar. To protect against the effect of arc faults, the switchboard is divided by bulkheads into a busbar compartment 1, a busbar compartment 2, a circuit breaker compartment 3 and a cable terminal compartment 4. The switchboard is equipped with a detachable circuit breaker 5, which is mounted on a switch carriage 6 and which in the run-in condition is electrically connected to the appliance panel via separating contacts 7,8. via the isolating contact 7, the connecting conductor 9 and the switch poles 10 for the switching device 11, the circuit breaker can be connected to busbar I or busbar II. The circuit breaker is connected to an output cable 17 via the separation contact 8, a bolt bushing 12, a current transformer 13, a voltage transformer 14 and the grounding switch 15 and cable box 16. By inserting the grounding knife 18 into the grounding switch's opposite contact 19, the cable output is connected to ground potential. The switching device 11 is arranged in a space 20 between the two busbar spaces 2,3 and the space 20 is connected to the circuit breaker space 3. The individual switch poles are held on both sides by means of flanges 22 in the walls 21 of the busbar spaces. Each switch pole has two contact pieces 23,24, which can be operated in the opposite axial direction and can be brought into engagement with a countercon-. timing piece 25, which is integrated into the busbar conductor. The movable contact pieces 23, 24 are operated via separate drive devices, not shown in detail, which may consist of an electric motor with a gear and a transfer link which consists of a tanh rod and a drive.

Fig. 2 viser sideanordningen av de enkelte bryterpoler 10 for (omkoplingsanordningen I og lederforbindelsene 9 til effektbry- | teren. Fig. 2 shows the side arrangement of the individual switch poles 10 for the switching device I and the conductor connections 9 to the circuit breaker.

Claims

1. Multi-pole switching device, in particular for switching a circuit breaker from a busbar I to a busbar II in a high-voltage switchboard, characterized in that the switching device is designed according to the principle of a sliding switch and is arranged between the two busbars, that each switch pole at all times can be connected with a phase conductor for the two busbars, where means are arranged so that the switch pole 10 is first separated from one busbar after it is connected to the other busbar, and that each switch pole has a clamp for a connecting cable (9).

2. Switching device as specified in claim 1, characterized in that the switch poles (10) are arranged in a plane located above each other with their switch movement across the busbars, that each switch pole has two contact pieces (23,24), which can be operated in the opposite direction axial direction, and that the first movable contact piece (23) is first separated from the counter contact piece (25) after the second movable contact piece (24) is connected to its counter contact piece.

3. Switching device as stated in claim 1 or 2, characterized by . that the switch poles (10) are arranged laterally offset from each other and that the outgoing conductors (26) are straight down vertically.

4. Switching device as set forth in one of claims 1-3, characterized in that the switching device for an appliance panel with bulkhead-protected busbar compartments is arranged in a space (20) between the two busbar rooms, which space (20). is in connection with the circuit-breaker room, and that the individual switch poles (10) are secured at both ends in the walls of the busbar rooms.

5. Switching device as specified in claim 2, characterized in that the counter contact pieces (25) are directly integrated into the busbar. In the case of a multi-pole switching device, in particular for switching a circuit breaker from a busbar I to a busbar II in a high-voltage switchboard, the switching device according to the invention is designed according to the principle of a slide switch and arranged between the two busbars, so that each switch pole at all times can be connected with a phase conductor for the two busbars.