HOLDERS WITH POWER BUSBARS FOR A BUSBAR SYSTEM

"-J '-isss-vu-*," -s grsssjisajriwa'v- - ** 'n 'ir'i'™"™" _-iajii( kil " j' COMMONWEALTH OF AUSTRALIA PATENTS ACT 1952 COMPLETE SPECIFICATION Form FOR OFFICE USE Short Title:

Int. CI:

Application Number:

Lodged:

Complete Specification-Lodged:

Accepted:

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Related Art:

TO BE COMPLETE. Y APPLICANT Name of Applicant:

Address of Applicant:

Actual Inventor:

Address for Service:

R1TTAL-WERK RUDOLF LOH GmbH & Co.

KG.

Auf d«s Stuzelbert, 6348 HERBORN, WEST GERMANY Hahs Wagener GRIFFITH HACK & CO.

71 YORK STREET SYDNEY NSW 2000 AUSTRALIA Complete Specification for the invention entitled:

HOLDERS WITH POWER BUSBARS FOR A BUSBAR SYSTEM The following statilesnt is a full description of this inventidn, including the best niethod of performing it known to me/us:- Holders with Power Busbars for a Busbar System The present invention relates to a holder for busbars, the holder comprising an insulation carrier arranged to seat each busbar.

A holder is disclosed in DE-PS 31 43 518. The insulation carrier in this context is designed as a slender, cuboidal shaped attachment part which extends crosswise to the power busbar sections and fixes them at a distance to the attachment surface. The power busbar sections are fixed in their lengthways direction at several positions spaced from each other by means of such holders. Electrical devices can be connected directly with the power busbar sections between the cuboidal shaped " 15 holders. In this case the power supply cables for the electrical devices are laid unprotected at the connection points of the electrical devices. This cabling has, in addition, the disadvantage that not only are the power • supply cables badly laid out, they can also come into contact with the electrically charged parts of the busbar system which carry a different potential so that there is a danger of short circuits.

According to the present invention there is provided a holder with busbars for a busbar system, 215 comprising:

•, an insulating support with receptacles in its top surface, a plurality of busbar sections arranged to be fixed in position in said receptacles at regular intervals j«t parallel to one another, ~~ the insulating support being in the form of a carrier plate that extends over the lengths of the busbar sectionsf a row of openings located in the carrier plate at least between adjacent busbar sections, said openings being aligned perpendicularly to the busbar Sections; and channels located in the bottom of the carrier plate which serve as cable ducts, said channels connecting perpendiculariy aligned openings.

• t t m t f * * t J, • t * r • 1 * 4 i lift a • 1 * t # t * • ( t i ma n witrrmaMBftWifi* According to a preferred embodiment of the present invention, the channels are developed as drillings which are arranged at regular intervals to each other in the longitudinal direction of the power busbar sections or the channels are developed as slots which are aligned by their larger dimensions in the longitudinal direction of the power busbar sections and arranged at regular intervals to each other.

i t I « * t 4 " »l*Hi,ii*iiUrlii.li.a>1jiiiili« . , y, .11 "'.Lt* * * * e * m • r 4 # Sufficiant space for the power supply cables is created in these cable channels by the fact that the openings extend over a part of the thickness of the carrier plate that corresponds to approximately a third and up to a half of the thickness of the carrier plate.

The fixing of the power busbar sections on the carrier plate is performed, according to one embodiments,by the power busbar sections being screwed to the carrier plate. In this case it is advantageously provided for that the screw positions of the power busbar sections are arranged at regular intervals to each other in the longitudinal direction and laterally aligned on top of each other in order for uniformly developed power busbar sections to be used.

The space for the cable channels can be extended in that the underside of the carrier plate in "he area of the screw positions has vertical plates, running laterally to the power busbar secticas, that end on a common plane of the carrier plate and have cy lin d rical enlargements in the area of the screw positions. It is then provided for that the channels of the carrier plate . develop ed as slots each extend over the area of the carrier plate between adjacent vertical plates in order to enable power supply cables to be laid Over the entire width of the cable channels on the upper side of the carrier plate.

The connection of the electrical devices to the power busbar sections can then be easily carried out if the layout is undertaken in such a manner that the power busbar sections have Z shaped cross sections and are each introduced into the seats of the carrier plate and screwed to it and in that the. other lateral flanges of the Z shaped power busbar sections are arranged running par'allel and at a distance to the upper side <af the carrier plat© as connecting flanges.

The busbar system can be thus easily expanded in that the seats in the area of the narrow sides of the carrier plate running laterally to the power busbar sections pass over into expanded connecting seats for connector elements which connect the power busbar sections of continuously connected carrier plates to each other in an electrically conductive manner as well as by the fact that the carrier plate is developed with an angular shape having two carrier plate sections perpendicular to each other and retains angular power busbar sections and that in both carrier plate sections the openings run perpendicular to the angular power busbar sections fixed in it.

The angular carrier plate, according to another » .15 embodiment, can be composed of two part carrier plates where the ends turned towards each other are at a complementary angle of 45° to the longitudinal direction '.: of the power busbar sections.

'*• Optionally, the carrier plate may be equipped with attachment seats for attachment devices, such as attachment screws or similar devices, outside of the openings.

A preferred embodiment of the present invention ;*. will now be described by way of example only with reference to the accompanying drawings.

Figure 1 shows in plan view the holders with power busbars consisting of the carrier plate and the HdWer busbar sections.

Figure 2 shows a cross section through the holder with power busbars along the line II-II in Figure 1, Figure 3 shows in plan view an angular holder lit ( i * * r * « t • fc t ( [ i«;i»ki«iii» iiTlhW ' with power busbars with two part carrier plates and angular power busbar sections and Figure 4 shows in plan view another operational example of a holder with power busbars.

The operational example according to Figures 1 and 2 shows a holder with power busbars which as the insulation carrier has a carrier plate 10 that has a rectangular shape with its sidewalls 16 and ends 18 and 19. Three seats 11 are made in the upper side of the carrier plate 10 at equal distances for three identical power busbar sections 20. The power busbar sections 2(3 have a Z shaped cross section where a lateral flange 21 is screwed to the carrier plate 10 at regular intervals as the screw positions 24 show. The other lateral flange 23 which is at a prescribed distance to the carrier plate 10 via the centre flange 22 serves as a connecting flange to which the electrical devices are attached. In this instance the electrical connection is made between the power busbar section 20 and the electrical device.

The seats 11 in the upper side o£ the carrier plate 10 are matched in cross section to the cross section of the lateral flange 21 of the power busbar sectidns 20 so that they end flush with the upper side. A series of openings ll is made in the carrier plate 10 in each case between the lower power busbar section 20 and the centre pow&r busbar section 20 as well as between the centre power busbar section 20 and the upper power busbar section 20. These openings 12 are developed as drillings in the operational example which are arranged in the longitu¬ dinal direction of the power busbar sections 20 and the catrier plate 10 at regular intervals.

Fairs, of openings 12 are aligned on top o£ each other laterally to I, .. n. -.mi i t,(mth the power busbar sections 20. Groove shaped channels 13, 14 and 15, which extend over about one third to one half of the thickness of the carrier plate 10, are made in the underside of the carrier plate 10 which forms the attachment side of the carrier plate 10. These channels 13, 14 and 15 run perpendicularly to the busbar sections and form cable channels which connect pairs of openings 12 to the sidewalls 16 and 17 of the carrier plate 10. A power supply cable can be laid to the sidewall 16 and introduced in one opening 12 of a pair via the channel 13 and 14. The power supply cable can, however, also be introduced into the sidewall 17 and introduced into the other opening of the pair of openings 12 via the channel ,, 15 and 14 and led out from them. The carrier plate covers, in this instance, the power cables and prevents contact with electrically charged parts. Attachment seats for attachment devices, such as attachment screws, are made in the border areas of the sidewalls 16 and 17.

'•. The power busbar sections 20 end flush with the carrier plate 16 on the ends 19 and 18. The seats 11 end in the area of the ends 19 and 18 in extended connecting seats 27 for plate shaped connector contacts 226 which are ..* used for electrically connecting power bttsbar sections during the continuous connecting of holders with power 2* busbars. The power busbar sections 20 bear attachment '% drillings 25 for attachment screws 2.9 which are screwed into the connector elements 26 and 28 in the area of the connecting seats. In this case, the two piece connecting element can be composed of ah insulating part and a 3 0 contact part as can be seen in Figure 2. Half of th connecting elements 26 and 28 project into the connecting seat 27 so that two adjacent carrier plates 16 can be continuously connected to each other.

As the operational example according to Figure 3 3S shows the carrier plate can also b# developed in an angular Shape and be composed of two part carrier plates 10.1 and 10.2 which are at an angle of 45* to the part ( f sections of the angular power busbar sections 20 and supplement themselves to a mitre joint. The part carrier plates 10.1 and 10.2 can also be single pieced. Openings 12 are again made between adjacent power busbar sections 20 and the channels 13, 14 and 15 are perpendicular to the sidewalls 16 and 17 of the part carrier plates 10.1 and 10.2 serving as outer edges of the angular holder and thus perpendicular to the part sections of the angular power busbar sections 20. The ends 18 and 19 of the angular holder are perpendicular to each other and are arranged for connection to another holder.

The operational example according to Figure 4 differs from the other embodiment due to the type of openings 12 and channels 13, 14 and 15. Vertical plates 31 running laterally to the power busbar sections 20 are formed on the underside of the carrier plate 10 which end on a common attachment plane. These vertical plates 31 connect the screw positions aligned perpendicularly to the busbar section direction and are equipped with cylinder shaped enlargements 32 in these areas. The channeis 13, 14 and 15 extend therefore between adjacent vertical bars 31 which, like the screw positions 24, are arranged at , regular intervals in the longitudinal direction of the power busbar sections 20. The openings 12 are developed •25 as slots which, extend between adjacent vertical bars 31.

The access for the power supply cables is made on the sidewalls 16 arid 17 via the channels 13 and 15.

-ii-r "™"- THE CLAIMS DEFINING THE INVENTION ARE AS FOLLOWS:

1. A holder with busbars for a busbar system, comprising:

an insulating support with receptacles in its top surface, a plurality of busbar sections arranged to be fixed in position in said receptacles at regular intervals parallel to one another, the insulating support being in the form of a carrier plate that extends over the lengths of the busbar sections; a row of openings located in the carrxe™ plate at least between adjacent busbar sections, said openings being aligned perpendicularly to the busbar sections; and channels located in the bottom of the carrier plate which serve as cable ducts, said channels connecting perpendicularly aligned openings.

2. A holder with busbars according to Claim 1 wherein the openings are holes arranged in the longitudinal direction of the busbar sections at regular intervals with respect to one another.

'20 3. A holder with busbars according to Claim 1 wherein the openings are slots which are aligned with their greater dimensions in the xongitudinal direction of • the busbar sections and are arranged at regular intervals ,,." with respect to one another ' 25 4. A holder with busbars according to any one of >> Claims 1, 2 and 3 wherein the channels extend over one-third up to one-half of the thicJcness of the carrier plate.

5. A holder with busbars according to any one of Claims 1, 2 and 3 wherein the teusbar sections are screw-mounted to the carrier plate.

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