DE1665349B2 - Hollow-body electrical conductor for high currents and voltages - Google Patents

Description

1 66δ

. "Large contact area and at the same time a ho-K> .taktdruck can also be used with those bet η connecting devices for hollow body «Could not reach Lgiter where hammcr-πσε Connecting screws are used, these screws are only used to connect wire with ebeder Longitudinal axis of the screw perpendicular to each other for example contact surfaces by the USA patent, the French patent specification and the French patent specification is known, then the achievable con-If, on the other hand, the screw head is provided "(USA.-Patent ; one as well as a clamp

1739418
245

Legs have such a distance from one another and such a distance that they exert a clamping effect on the neck cuts when the bracket is screwed on, in the sense of reducing the width of the channel. ", _H _

Since the total avenge of the two delimiting the channel side surfaces is provided as electric Kontaiufläche and infoige of about gc entire depth uniformly decreasing Breitesu * xo channel can also be utilized as a contact surface, is a very large contact surface for Vertugun *. Further, it is "possible eraelbare means of the second part Klemmt clamping effect, to achieve a very ^{Hoh s, K n} ° S Pressurizing.""By the wedge shape of the channel, and -« * ™ ^ch - ^Beun ^ ⁶

whim

dn? the contact nncn running in the longitudinal direction of the rails on the tites facing the rails has which engage in grooves in the rails. E clamp the two rails together with "The head part of these ribs is pressed in by screws" the lower Lu of the associated groove that adjoins the base of the groove, a relatively small angle in the area of the high contact pressure that can be achieved as »- ■■ -. .. U-shaped profile of the second Klemmenteüs f ™ * f _25. Furthermore, an assembly or dismantling of the ^ clamp without changing the shape of the Vfite "is possible at any time, because the second Klemmente, through the channel into the ladder: is inserted or

3 "^" ΐ: ": = Τ aSÄ» ^, the

n of the rails from each other moghch _orhan In \ is the

Away-

can be excluded, but as a rule we require that the associated clamps can be inserted or removed at any time. without changing the i shape of the conductor.

The invention is based on the object of a shaped electrical conductor with a minde terminal of the type mentioned so .. i that not just making a solid mechanical, but also an electrically conductive connection with the greatest possible contact and the highest possible contact pressure

S ^ r ^

named kind is this task he _c _ _c

solved by that the channel has a uniformly decreasing width over its entire depth, wherein the entire area of the two side surfaces delimiting the channel is provided as electrical contact surfaces is. that the contact surfaces of the first terminal 6 » menteils at least over the measured in the radial direction of the conductor height of its in the inserted state part lying in the channel and that the bracket, its length, measured in the inserted state in the axial direction of the conductor, is smaller than the width of the channel at the narrowest point. a U-shaped professional! has, wherein the end portion facing inner surfaces on the two 1 118 289 known.

It is also possible without difficulty to use the first clamp part and / or the bracket as a contact piece for the connection of an expansion connector, reducing the effort for the expansion connector becomes very low. For example, by the German patent specification 706 290 and the USA.-Patent 2,706,744 known expansion or directly to the deformed to a square Screwed on the end of the tubular conductor. Both voltage connectors for tubular conductors are flexible Connecting straps on a terminal body screwed axially into the tubular conductor

'or known solutions therefore have the disadvantage of having a relatively large radius of curvature.

let the ends of the tubular conductors lead a different one, so that the field strength along the edge of the cable

\ training than the remaining sections of the conductor nals7 is as small as possible. When the area

have to work. chen 10 and 10 'to the inner surface of the remaining part

Especially if it is to be feared that the 5 of the jacket 6 can, however, be a much smaller one

Contact surfaces of the conductor with an oxide layer of curvature radius can be selected, as shown in FIG. 1 shows

or another insulating layer are covered. In the exemplary embodiment, the wall thickness is

it is advantageous if the first clamp part is selected larger than the free end sections 4 and 5

its contact wall thickness of the jacket 6 facing the channel side surfaces on the circle "l> ·"

has flat teeth. These teeth can then see part of the conductor 1 so that one suffices. .e

pierce the insulating layer and the mechanical strength of the free end sections

the channel side surfaces formed contact surfaces is available.

scrape bare. Teeth for piercing an insulating An embodiment of a clamp: tum connec-

Ending layer are shown in the case of terminals for hollow body conveyors of a branch conductor 11 with conductor 1

Mige conductor known per se (USA.-Patent 15 the F i g. 2 and 3. This terminal has a long-

2 269 233). stretched first clamp that can be inserted into channel 7

In the following, the invention is based on menteil 12, each of which forms a contact surface Embodiments shown in the drawing, the side surfaces 13 and 14 lie in planes that explained in detail. It shows itself to cut at the same angle as the plane

F i g. 1 shows a cross section through the head of an * o NEN, in which the side bounding the channel 7

first embodiment without clamp, surfaces 8 and 9 are. The outer surface 15 of the

F i g. 2 shows a complete cross section through the first clamping part 12 is cylindrically curved. you

Head of the first embodiment including the radius of curvature is the same as that of the line

a branch terminal attached to the conductor, tersl. In addition, the dimensions of the profile

Fig. 3 is a partially shown in longitudinal section 35 of the first clamping part 12 selected so that last

Side view of the conductor and the terer attached to it can be pushed so far into the channel 7 that the

Branch terminal according to FIG. 2, outer surface 15 at least almost in the cylindrical

F i g. 4 shows a cross section of a second exemplary surface of the outside of the jacket 26

Approximate form with a conductor according to FIG. 1 and one lies,

clamp carried by a post insulator, 30 On the side of the outer surface 15, the first

F i g. 5 shows a side clamp part 12, shown partially in section, in one piece at half the length

looks at the post insulator of the terminal and the Lei- with it trained approach 16, which as a press

ters according to Fi g. 4, sleeve is formed. In this approach 16 the

F i g. 6 is a longitudinal section through the two connecting ladder 11 introduced and with it into the storage area a third embodiment, consisting of 35 cuts 17 pressed.

two coaxially arranged conductors according to Fi g. 1 and for clamping the first clamping part 12 in

one connecting terminal each, channel 7 are four U-shaped second terminal blocks

7 shows a section along the line VI-VII of the element parts in the form of a bracket 18, which

F i g. ö, in each of its yoke part there is a

8 have a cross section through a fourth tapped hole 19. The length of each bracket

guide shape of a two-part conductor 18, measured in the inserted state in the axial

and an associated clamp. Direction of conductor 1, is smaller than the width of the

A channel is used as a busbar for switchgear at its narrowest point, so that the bracket

the conductor is 1. like F i g. 1 shows, similar to a pipe 18, through the channel 7 into the interior of the

which can be introduced with a conductor 1 extending in the longitudinal direction. The distance

fenden slot is provided. The end faces 2 and 3 of the two legs 20 and 21 of each bracket 18 and

of the free end portions 4 and 5 of the rest of the inclination of their facing inner surfaces

a circular cylinder forming jacket 6 each have 22 and 23 are chosen so that the inner surfaces 22

but not against each other. Rather, the free and 23 are in their entire area on the surfaces 10

End sections 4 and 5 to the inside of the conductor ab- 50 and 10 'of the conductor 1 rest without play when the

angled whereby they the side walls of a channel 7 bracket 18 riding from the inside on the free end

form that is open to the inside of the ladder. the 4 and 5 is attached and with its yoke part

The mutually facing flat side surfaces 8 rests on the end surfaces 2 and 3. By means of one each

and 9 of the free end sections 4 and 5 are counter-screw 24, which is sunk in a bore 25 of the

inclined above the plane of symmetry of the channel 7, 55 first clamping part 12 is arranged and into the

that the channel engages a tapered hole in the bracket 18 towards the inside of the conductor, can

having mende width. In the same sense, the first clamping part 12 and the bracket 18 are opposite to one another

surfaces 10 and 10 'facing the inside of the conductor are drawn.

the free ends 4 and 5 inclined. This inclination The attachment of the clamp happens in the following way However, the angle is greater than that of the side surface 8 and 9. so that the cutting angle of the inserted through them, then turned 90 and riding Layed levels is greater than that of the protruding into the interior of the conductor 1 free end die Areas 8 and 9 laid levels. sections 4 and 5 put on. The Schraul cn 24 can

ÖTe end faces 2 and 3 are in one to the nen already before the introduction of the bracket 18 or

through the longitudinal axis of the conductor 1 going Sym- 65 only after it has been placed on the

metric plane of the channel 7 vertical plane of the free end sections 4 and 5 are screwed.

Transition of the side surfaces 8 and 9 to the outside

The surface of the remaining part of the jacket 6 has a yoke part on the end faces 2 and 3. aside from that

the inner surfaces 22 and 23 of their legs_20 > A on the surfaces 10 and 10 'of the free end

and9. wourcn aie nuiuiuu _u ....- _o

be scraped off. In addition, d 'to head towards the interior of decreasing width of the channel 7 and the corresponding taper allows the clamping member 12 Ersun achieving e.nes high contact pressure between the abutting surfaces of the terminal body ^ clock and Endabschn.t- x ₅

'''Line improve contact fishing the first clamping member 12 and the Se "th ⁿ achen8und9 is still possible through the use of line contacts may. For this to be dialich provided Ie on the sidewalls of the first Klemmt nteils 12 teeth consumers. Vomigsw- ^ Here the teeth are designed so that they extend in the direction of insertion, i.e. perpendicular to the longitudinal direction of the channel 7,

The clamp can be attached at any point on the conductor1. In addition, she can ^ again at any time removed, as only the screws 2 * LÖM. the first clamp part 12 from the Kanaiv pulled out and then the bracket 18 from the 3 <> The inside of the conductor is taken out through the channel 7 need to become.

An embodiment with a clamp for Befesticuni of the hollow-body-shaped conductor, dei-c, the conductor 1 is formed on a supporting insulator 26 zei _E en FIGS. 4 and 5. This clamp comprises an insertable into the channel 7 the first clamping member 27. the side surfaces 28 and 29 of which, in the inserted state, rest against the ten surfaces S and 9 delimiting the channel. The .Hohe of the ^ J ⁴ terminal part 27 is chosen so that it is inserted into the channel 7 when it is inserted. in a radial R> chum »an, a;, - = eni protrudes and supports a support that widens towards one end 27 '. * Duocl. The free end 27 'can be pushed into a dovetail 30 of the post insulator 26. The two brackets 31 are designed in the same way as the brackets 18 of the embodiment according to FIGS. 32. which penetrate the first clamp part in a respective bore 33 and engage in a yoke part of the bracket 31. Since no current flows through the first terminal part 27, there is no need to attach any importance to poor contact between the side surfaces 28 and 8 and 29 and 9; it is therefore not necessary for the first terminal part 27 to extend as far as possible over the entire depth of the channel 7 on its side surfaces 8 and 9 applies.

Eme embodiment with a clamp to connect close a so-called expansion joint shows Fig. 6. The expansion joint 3 ^ of the m known way from ^ a ^ yeltsam ^. ^^ Tapes, has

The expansion connector 34 is at its two ends each with a second Klcmmcnteil forming Brackets 35 and 36 connected, which differ from the brackets 18 and 31 only by eme much larger Differ in length. The length can be chosen so large here because the bracket 35 and 36 not through channel 7 or 7 '. but from the open face into the interior of the conductor 1 or 1 'can be introduced. The ends of the expansion connector? 4 are secured by screws 37 pressed against the surface of the yoke of the two brackets facing away from the channel.

The two brackets 35 and 36 are each first Clamping part 38 and 39, respectively, which correspond in shape to the first clamping part 12 of the exemplary embodiment according to FIGS. 1 to 3. Means Screws 42, which are countersunk in the first clamping parts 38 and 39 and in threaded bores the bracket 35 and 36 engage, the first clamping parts 38 and 39 are in the channel 7 or 7 'pulled in. Since the first Klcmmenteilc 38 and 39 try to widen the channel, the yoke of the bracket is not only pressed against its bearing surfaces, but also the the inside of the conductor facing side surfaces of the free end sections forming the channel walls the inner surfaces of the legs of the stirrups 35 and 36 are pressed so that good contact between the stirrups 35 and the conductor 1 and the bracket 36 and the conductor Γ is formed.

If you fit the curvature of the outer surface 40 and 41 of the first clamp parts as in the embodiment 38 or 39 of the curvature of the conductors 1 and Γ, it is not only prevented that at the junction of the two conductors 1 and Γ higher field strengths occur, but it also results from the The advantage that a relatively tightly fitting protective cover 43 is pushed over the connection point can be. Of course, the protective cover 43 may only be stuck on one of the two conductors, so these can still shift relative to one another

bridge.

"" The embodiment of a shown in FIG -.1. «! Ammeischiene serving conductor 101 is in the Geeensa" tz "for Head of the embodiments gcmais the Fi "1 to 7 of two identically formed em C-Profif having parts 101 'and 101 assembled, the two identical, diametrically arranged Form length canals 107. The shape of the channels is the same as that of the channel 7 of the conductor As are the side walls of the two there Channels through the angled towards the inside of the ladder free end portions of the two parts 101 and 101 ″. A further explanation is therefore not necessary in this respect.

In order to connect the two parts 10Γ and 101 ″ to one another, connecting clamps are used in the exemplary embodiment provided, which are inserted into one of the two channels 107 at a distance from one another are of course you can. if this is necessary. the connecting terminals also in both Provide channels 107 or replace them with terminals, as they are in connection with the F i g. 1 to 7 illustrated embodiments described are.

The connecting terminal consists of an in the Channel insertable first clamping part 112, the side surfaces of which form its contact surfaces on the

309 538

the side surfaces delimiting the channel rest against a profile forming the second clamping part U-shaped, riding on the inwardly angled and the channel side walls forming free end sections of parts 101 'and 101 "attachable Bü-

f-

gel 118 and a clamping screw connecting the first clamping part 112 and the bracket 118 to one another 124. The training in detail corresponds to that as it is for the leader 1 provided terminals is taken.

1 sheet of drawings

Claims (6)

! 665 349 \ part (12) in its patent claims delimiting the channel: ten surfaces (8, 9) facing contact surfaces (13 14) has teeth 1. Hollow body electric conductor for high currents and voltages, especially for the 5th
Use as a busbar in switchgear, with at least one extending in the longitudinal direction of the The invention relates to a plane body; Conductor extending over its entire depth electrical conductor for high currents and voltages, a decreasing width towards the inside of the conductor, in particular for use as a busbar in the having channel, which is by iuuen ab- io switchgear, with at least one free end section of the conductor profile at longitudinal angles - Direction of the conductor extending beyond its boundaries, the depth of the facing flames has a small channel decreasing towards the inside of the conductor as a width extending over the entire length of the conductor, which is formed by inwardly ab-terminal contact surfaces and angled free End sections of the conductor profile are adjoined by surfaces facing the inside of the conductor in 15, which on the surfaces facing each other have planes tapering towards the inside of the conductor and extending over the entire length of the conductor and forming wedge-shaped planes, and are formed with at least one contact surface Clamp, the betw ei through at least the inside of the conductor facing surfaces in a screw that can be connected to one another and forming a wedge that tapered towards the conductor interior, this screw can be pulled against each other, and with at least one terminal that has element parts, the first of which as one in two through at least one screw with each other the channel engaging body with a channel cross-section adapted to the connectable and with this screw against each other, laterally through to pullable clamping parts, of which the first of the channel side surfaces can be pressed, just designed as a body engaging in the channel formed with one Supporting surfaces limited wedge profile, adapted to the channel cross-section, laterally through and the second as a wedge profile which can be pressed onto the channel side surfaces from the inside of the conductor, the end sections can be placed on, encompassing these encompassing support surfaces, and which the bracket is formed thereby te as one from the inside of the ladder on the end. that the channel (7: 107) is a bracket that can be placed over sections, encompassing this bracket, and forms an evenly decreasing 30 overall depth. One such conductor with terminals is known to the side surfaces (8, 9) delimiting the channel (German Auslegeschrift 1118 289). The terminals are provided as an electrical contact surface that have the task here of the individual, angled contact surfaces (13, 14; 28, 29) of the first profile having rails, from which the conductor terminal part (12, 27; 39, 112) at least is composed of 35, so with each other mechanically to connect the measured in the radial direction of the conductor that the rails extend in the circumferential direction unHeight of its in the inserted state in the channel ter formation of a gap between two adjacent parts and that the bend! (18; hard rails are fixed, but that they can expand in 31, 35, 36; 118), the length of which, measured in the one longitudinal direction, independently of one another set differently in the axial direction of the lei 40. This is achieved in that further, smaller than the width of the channel at which the first terminal part is at the narrowest point facing each other, has a U-shaped profile on the surfaces of the assigned channel of the conductor only in its end sections (4 . 5) rests against an outer section in which facing inner surfaces (22, 23) on the two these surfaces form an obtuse angle with each other, legs (20, 21) enclose such a distance from each other, while it extends to the inside of the conductor and each other have such a tendency that the adjoining section of the mutually facing end sections (4, 5) when screwing on surfaces of the channel, soft in this section beneath the bracket (18; 31, 35, 36; 118) an acute angle include, not touched. A clamping effect in the sense of a reduction in the size of the channel width is exerted by the second clamping part with two grooves. 50 provided, in soft the free ends of the inward 2. A ladder according to claim 1, characterized thereby, angled, the channel-forming sections of the shows that it is circular and integrally engages rails. An electrically good conductive forgiveness Idet is (Fig. 1). bond with a large contact area and high contact 3. Head according to claim 1 or 2, characterized by clock can be with such a channel shape and a indicates that the first clamp part (12) does not achieve such a clamp. The least as part of a terminal for a sought longitudinal displacement of the rails relative Branch conductor (11) is formed (Fig. 2 and 3). to the terminal as well as the usual manufacturing tolerances 4. Ladder according to one of claims 1 to 3, prevent the formation of a large Konlaktflächec characterized in that the first clamping part is between the rails and the second clamping part (27) is designed as a part that is connected to an insulator (26), and also the contact surface between the moveable carriers (FIGS. 4 and 5). and the first terminal part is due to its 5. Ladder according to one of claims i to 4, was only in the outer portion of the channel relatively dared characterized in that the first clamp ring. In addition, the blunt [eil (38, 39) and / or the bracket (35. 36) as a con angle, which the contact surfaces of the channel for the : include act piece for the connection of a Dchnungsver- 65 first clamp part and the fixation binder (34) is formed (Fig. 6 and 7). the channel width through the grooves of the second clamp 6. Head according to one of claims] to 5, menteils a strong clamping effect and thus a characterized in that the first terminal high contact pressure cannot be achieved