EP2188821B1 - Fused load disconnector with double protection against accidental contact, having a modifiable connecting direction - Google Patents

Description

The invention relates to a fuse switch disconnectors.

Fuse switch disconnectors generally consist of a disconnector base, in which contact groups are arranged for receiving fuse units, which in turn are inserted on the underside of a relative to the separator base pivotable lid, such that when closing the lid, the fuse units are introduced into the contact groups. The separator base is brought into electrical contact with the bus bars of a busbar collection system via an adapter device.

document DE3119957 A1 discloses a fuse switch disconnector according to the preamble of claim 1.

From the DE 31 19 957 A1 is known a safety edge, having on its strip body, pairs of contacts for the NH fuses. Switching flaps, which serve as a carrier for one NH fuse each, are pivotally attachable to bearing points on the strip body. The bearings are arranged between two successive pairs of contact pieces so that they have the same distances from each adjacent contact pieces. In just these distances from the outermost contact piece of the strip body is provided at the two outer ends depending a bearing point.

The invention has for its object to provide a fuse switch disconnectors, in which the connection direction is variable, in particular on the spot of the assembly can be adjusted to the required needs.

This object is achieved by a fuse switch disconnector according to claim 1.

The invention provides a fuse switch disconnector, which is fixed by a housing separator lower part in the direction of connection by 180 °, so that the access contacts can be placed either above or below. On the housing, a lid is pivotally mounted, wherein the lid relative to the lower part of the separator can be mounted rotated by 180 °. In the fuse switch disconnector according to the invention, the disconnector base can be placed on an adapter in two different directions of connection, which in turn can be fastened on the busbars of a busbar system which is usually located in the vertical direction. In order to enable the different mounting of Trennerunterteils on the adapter, a group of receiving contacts in the separator base in the form of plug contacts is formed with a protruding from the housing foot section, which can be inserted in the symmetrical to the transverse axis of the adapter shaped and mating contacts receiving openings. In the disconnector base of the fuse switch disconnector two units of contact protection hoods are provided, one of which is fixedly mounted in the region of the plug contacts, while the other contact protection cover is removable and serves to cover a receiving contact group and terminal contacts. The removable contact protection hood is provided with integrated extinguishing chambers as well as the permanently mounted contact protection hood, so that regardless of the direction of connection of the divider lower part the required extinguishing chambers are present at the respectively necessary location.

According to the fuse switch disconnector according to the invention, the disconnector base is provided with a locking device, which is associated with a detection device of the removable contact protection cover, such that when not done locking the locking device, the cover on the separator base is not placed, while the removable contact protection cover is then placed on the separator base when the locking device is spent in its locking position.

In the following, the fuse switch disconnector according to the invention will be described with reference to the drawing to explain further features.

Fig. 1

eine schematische Darstellung eines Sicherungslasttrennschalters mit einem Trennerunterteil und dem zugehörigen Adapter,

Fig. 2

eine Teildarstellung von Kontakten sowie einer Kontaktschiene, die im Trennerunterteil einerseits und im Adapter andererseits angeordnet sind,

Fig. 3

eine Fig. 1 entsprechende Darstellung, bei welcher das Trennerunterteil gegenüber Fig. 1 um 180° gedreht ist,

Fig. 4

eine Explosionsdarstellung einer bevorzugten Ausführungsform eines Sicherungslasttrennschalters zur Erläuterung der einzelnen Einheiten,

Fig. 5

eine perspektivische Draufsicht auf den Adapter,

Fig. 6

eine perspektivische Ansicht der Berührungsschutzhauben,

Fig. 7

eine Unterseitenansicht des Trennerunterteils,

Fig. 8

eine Draufsicht auf das Trennerunterteil, und

Fig. 9

eine Unterseitenansicht der Berührungsschutzhaube.

Show it:

Fig. 1

a schematic representation of a fuse switch disconnector with a separator base and the associated adapter,

Fig. 2

a partial view of contacts and a contact rail, which are arranged in the separator base on the one hand and in the adapter on the other hand,

Fig. 3

a Fig. 1 corresponding representation in which the separator base opposite Fig. 1 turned 180 °,

Fig. 4

an exploded view of a preferred embodiment of a fuse switch-disconnector to explain the individual units,

Fig. 5

a perspective top view of the adapter,

Fig. 6

a perspective view of the contact protection hoods,

Fig. 7

a bottom view of the separator base,

Fig. 8

a plan view of the separator base, and

Fig. 9

a bottom view of the contact protection hood.

Hereinafter, the basic principle of the fuse switch-disconnector will be explained in connection with a disconnector base and an adapter, which is suitably applied in the present invention, to be able to put the separator base 1 with an adapter 18 on a different connection direction.

Fig. 1 shows a fuse switch disconnectors, which has a separator base or lower part of the separator 1 and a preferably pivotally hinged on the separator base 1 lid 2. The lid 2 serves to accommodate one or more fuse units. Such fuse units have for contacting the contacts described below in Trennerunterteil 1 contact blade. Such a fuse unit is in Fig. 2 denoted by 3, the contact blades are indicated by 4 and 5.

Like from the FIGS. 1 and 2 it can be seen, the cover 2 is pivotally mounted on pivoting means 7 on holding means 8, wherein the holding means 8 are preferably provided in the form of receiving pin or the like. On the inside of Trennerunterteils 1 are two pairs of such holding devices 8, 8 ', which serve to cover either to attach to the pair of retainers 8 or to the pair of retainers 8 ', depending on how the disconnector base is attached to the associated adapter 18 to be described later. The separator base 1 is usually located in the vertical direction, so that the lid 2 is pivotally arranged hinged to "top".

In the isolator base 1 are in a three-pole switching device, three pairs of contacts 10, 11 which are provided opposite each other and serve to receive the contact blades 4, 5 of the respective fuse unit 3, when the cover 2 is displaced in the direction of the separator base 1 and is closed.

At the in Fig. 1 and 2 Shown embodiment, a feeder contact in the form of the contact 10 is provided and an access contact 11 in the form of a plug contact, as will be explained in more detail below. The plug contact 11 has a foot portion 12 which is carried out of the separator base 1 down through an opening 17 in the separator base 1b and protrudes from the separator base lower side 1a over a predetermined distance. The outgoing contact 10 in the illustrated embodiment has a substantially and preferably L-shape and is fastened to the separator base 1b by screw means 13 and further carries on the leg 10a extending parallel to the separator base plane a clamping screw 14 for clamping a line end or the like. The plug-in contact 11 is fastened by means of a leg 11a projecting perpendicular to the foot section 12 and screw means 15 on the lower part of the separator base of the lower part 1 of the separator.

At the in Fig. 1 and 2 1, the plug contact 11 is designed such that the foot section 12 is offset parallel to its receiving section 11b for the blade contact of the associated securing unit 3 by forming a shoulder section 11c between the section 11b and the contact section 12. Specifically, expressly Fig. 1 directed.

The shoulder portion 11c rests on the separator base 1b of the separator base 1. In the Trennerunterunterboden 1b is an opening 17 through which the plug contact 11 is guided with its foot portion 12 therethrough. In Trennerunterunterbodenboden 1b Furthermore provided screw 16, which serve to attach the separator base 1 to the underlying adapter 18 can.

As it turned out Fig. 1 and 2 results in the contact blades 4, 5 after closing the cover 2 in the receiving areas 10b, 11b associated contacts 10, 11, whereby an electrical connection between the access contact in the form of the plug contact 11 and the outgoing contact 10 is provided.

The switching device according to the invention is placed on the adapter 18, wherein the foot portion 12 of the plug contact 11 via one of a pair of openings 18a, 18b with predetermined areas 21, 22 of a contact rail 20 engages and thus the electrical contact between the foot portion 12 and the contact rail 20 is made. This takes place when placing the Trennerunterteils 1 on the adapter 18th

At the in Fig. 1 and 2 In the embodiment shown, the contact rail 20 is provided with two defined contact areas 21, 22, as will be explained in more detail below. If the separator base 1 after Fig. 1 and 2 put on the adapter 18, the foot portion 12 comes into contact with the portion 22 of the contact rail 20, which in turn can be brought into electrical connection with one of the 24, 28, 29 designated busbar or busbar.

The adapter 18 further comprises feet 25, 26, 27 which serve to partially engage under the respective busbars 24, 28, 29 in order to allow the adapter 18 to be placed on the busbars 24, 28, 29, as such is known.

Fig. 2 shows a preferred embodiment of the invention used according to the contacts 10, 11 and the contact rail 20 of the adapter 18. Each contact 10, 11 is provided in a conventional manner with contact legs 30, 31 and 32, 33, which by a spring ring 35 and 36 respectively are biased in a clamping position, as is also known per se. The contact legs 30, 31 and 32, 33 are substantially parallel to each other and carry upwardly expanding insertion areas. The legs 30, 31 and 32, 33 are engaged behind by a respective spring ring 35 and 36 respectively.

At the bottom of the plug contact 11 is the foot portion 12, which in this Embodiment corresponding to the upper contact portion with the parts 32, 33, 36 is formed and also has a spring ring 38.

The contact rail 20 has in the width shortened portion 21, 22, which are preferably conical or bevelled or round, to allow easy placement of the plug contact 11 with its foot portion 12. For this purpose, the legs 39, 40 of the foot portion 12 are also bent laterally, whereby the attachment of the legs 39, 40 is facilitated on the section 21 and 22 respectively.

The contact rail 20 has a downwardly bent tab 42 which terminates in a downwardly arcuate arc 43. The bow 43 is used for contacting the associated busbar, as is made Fig. 2 is apparent.

Fig. 3 shows one Fig. 1 corresponding representation, in which, however, the separator base 1 opposite Fig. 2 rotated by 180 °, such that the plug contact 11 in Fig. 3 in contrast to Fig. 1 and 2 is on the left side of the Trennerunterteils 1, ie in the vicinity of the lid 2. The cover 2 is in the embodiment according to Fig. 4 used in the holding devices 8 'and pivotally mounted around this. By arranging the holding devices 8, 8 'in pairs, it is thus possible to connect the lid 2 either to the holding devices 8 or alternatively accordingly Fig. 4 to be attached to the holding means 8 ', so that the separator base 1 opposite by 180 ° Fig. 1 and 2 can be provided rotated, causing the outgoing contacts to Fig. 1 . 2 lie opposite direction.

In the embodiment according to Fig. 1 and 2 the outgoing contacts are "up", ie in the region of the attachment of the lid 2, while in the embodiment according to Fig. 4 the outgoing contacts 10 are "down", ie on the side facing away from the cover 2 of the Trennerunterteils.

If the separator base 1 after Fig. 3 placed on the adapter 18, then the foot portion 12 comes into contact with the area 21, which has the same configuration as the area 22 after Fig. 3a , wherein in the adapter 18 both above the region 21 and above the region 22 openings 18 a, 18 b are designed to insert the plug contact 11 accordingly.

The switching device according to the invention has per pole corresponding contacts 10, 11. How out Fig. 2 and 4 can be seen, per pole or per busbar 24, 28, 29 each have a contact rail 20 are provided. In the illustrated embodiment is a three-pole switching device for use on the busbars.

From the above explanation, it can be seen that the separator base 1 can be easily turned by 180 °, as desired or required, to locate the outgoing contacts either "up" or "down".

A contact structure, as used in conjunction with the Fig. 1 to 3 is shown in the patent application DE 10 2006 022 374 of 12 May 2006.

Fig. 4 shows an exploded view of the fuse switch disconnector according to the invention with the cover 2, the separator base 1 and the adapter 18. According to the present invention, the illustrated preferred embodiment has a solid contact protection 50 in the form of a contact protection cover and a removable contact protection 51 in the form of a contact protection hood.

The contact guard 50 is firmly latched to the separator base 1 and is thus stationary to cover contact tongues 53, 54, 55 are provided which form a first contact group and are provided as plug contacts. These plug contacts 53, 54, 55 correspond to the plug contacts 12 in the Fig. 1 to 3 , How to get out Fig. 4 results, the contact protection hood 50 is provided with slots 58 to 60, by means of which the poles or contact blades of the fuse units in the respective contact tongues 53, 54, 55 can be inserted. The contact guard 50 has a substantially parallel to the surface of the separator upper part 1 extending cover 50a, to which in the direction of the center of Trennerunterteils 1 hood-shaped elevations 60a, 60b, 61a, 61b, 62a, 62b connect with intermediate insertion slots. The hood-shaped elevations 60a to 62b cover plug contacts 53, 54, 55 laterally and above the same and are provided in pairs per plug contact, as is apparent from the drawing Fig. 4 evident.

The contact protection hood 51, which is detachably provided to the lower part of the separator 1 and has a lid 51a, which, as soon as the contact protection hood 51 is placed on the lower part 1 of the separator, runs parallel to the upper surface of the lower part 1 of the separator. The cover 51 is followed by corresponding hood-shaped elevations 70a, 70b, 71a, 71b, 72a, 72b with intermediate insertion slots 74, 75, 76, which also serve to carry out the relevant pole or contact blade of the respective fuse units. Below the elevations 70a to 72b are the contact tongues 80, 81, 82, which are electrically connected to access terminals 84 to 86. The reeds 80 to 82 are over in Fig. 4 not shown conductors connected to the access ports 84, 85, 86 and correspond to the contacts 10 in Fig. 1 to 3 ,

Below the Trennerunterteils 1 is the adapter 18 with corresponding openings 87 a, 87 b, 87 c and 88 a, 88 b, 88 c, which are each provided symmetrically to a central axis of the adapter 18 and below which mating contacts is such that the separator part 1 either in the in Fig. 1 shown direction or rotated 180 ° thereto can be placed on the adapter 18. From the above description it is apparent that when using contact tongues in the form of plug contacts of the kind as they are in Fig. 2 are denoted by 12, that is, when these plug contacts have two legs 39, 40 separated from each other, in the top of the adapter 18 for each such pair of legs an opening pair is required. In the case of using other plug contacts with only a single leg, the formation of only one opening per pole is sufficient. The contacts or conductor tracks in the adapter 18 are not designated in the figures. In that regard, on the Fig. 1 to 3 referenced, in which the contact tongues in the form of plug contacts 11 associated contact elements 20 are shown with Kontaktierabschnitt 21, 22 in detail.

In the illustrated preferred embodiment, the removable contact protection cover 51 is provided with preferably fixed partitions 90, 91, which may be provided either as separate elements or sprayed together with the contact protection cover 51. The partitions 90, 91 serve as an insulator between the individual arranged on the cover 2 fuse units in the operating state of the fuse switch disconnectors, ie when the lid 2 is closed and the fuse units are inserted with their respective poles in the respective contact tongues 53 to 55 and 80 to 82.

Fig. 4 shows further that the separator base includes locking means, preferably in the form of locking buttons, provided for locking the separator base 1 to the adapter 18, the adapter 18 containing associated seats 95, 96 in which the locking means engage.

Like yourself Fig. 5 can be seen in the end cap 18a three pairs of apertures 87a, 87b, 87c provided and symmetrical to the center line opening pairs 88a, 88b, 88c, through which the foot sections in the form of plug contacts, for example in Fig. 2 labeled 12, are passed to engage around the respective contact portions of the conductor 20. If the separator base is rotated by 180 °, then the plug contacts 12 engage through pairs of openings 88 a, 88 b, 88 c and contact the corresponding other conductor 20.

Fig. 6 shows a perspective view of only the contact protection covers 50 and 51 to illustrate their operating condition as soon as the removable contact protection cover 51 is firmly inserted into the separator base.

The partitions 90, 91 are located in respective slots each about the front side of the contact protection hood 50 and 51 and are perpendicular to the covers 50a, 51a.

In the illustrated embodiment, the dome-shaped elevations 60a, 60b, 61a, 62b, 63a, 62b and 70a, 70b, 71a, 71b, 72a, 72b are beveled conically on the facing surfaces to prevent insertion of the securing units during, for example, closing the lid 2 to facilitate. One of these bevels is in Fig. 6 in relation to the dome-shaped elevation 60a is designated 98 and is formed correspondingly in the other dome-shaped elevations.

In the hood-shaped elevations are per pole each extinguishing chambers for extinguishing arcing, which may occur when removing the fuse units, these extinguishing chambers are provided in the hood-shaped elevations of both contact protection hoods 50, 51, so that regardless of the direction of connection of the separator base 1 respectively to the necessary contact areas extinguishing chambers are present.

Fig. 7 shows a perspective view of the separator base 1 as seen from below with the access contacts 84, 85, 86 and facing away from these plug contacts or contact tongues 53, 54, 55, from which it can be seen that the contacts 53, 54, 55 are formed in the form as related to Fig. 2 is shown. According to Fig. 7 the locking devices 92, 93 are shown with their reaching into the adapter 18 foot portion, which has approximately oval shape and can be moved by turning relative to the openings 95, 96 in a locking position relative to the adapter 18. The contacts 53, 54, 55 are of the two contact groups 53 to 55 and 80 to 82, those who make an electrical contact or connection over the adapter 18 and thus lead to the bus bars not shown. For example, the contacts 80 to 82 have the shape as shown in FIG Fig. 2 is represented by the contacts 10.

Fig. 8 shows a plan view of the separator base 1 and illustrates the locking devices 92, 93 viewed from the upper side. The head of the locking devices 92, 93 is key-shaped in the illustrated embodiment and can preferably move between two positions, wherein in one position the lock engages and is unlocked in the other position, so that the separator base 1 can be lifted off the adapter. The removable contact protection cover 51 has according to Fig. 9 on the lower walls webs or guide curves 98.99, which have a contour corresponding to the head of the locking devices 92, 93 and which are aligned so that when manufactured locking the head of the locking devices 92, 93 engages in the respective guide curve 98, 99 and thus the detachable contact protection cover 51 can be placed on the separator base. If the locking device 92 and / or 93 is not brought into the locking state, ie is the head of the locking device 92 and / or 93 transversely to the corresponding guide curve 98, 99, then the removable contact protection cover 51 can not fit firmly on the separator part 1. This ensures that the contact protection hood 51 can only be placed on the separator part when the locking devices 92, 93 are actually locked relative to the adapter part 18.

Out Fig. 9 It can also be seen that the partitions 90, 91 not only extend above the contact protection hoods 51, 52, but also extend downwards through corresponding slots between the contact tongues, thus isolating all of them ensure adjacent contact tongues or plug contacts to the bottom portion of the separator base 1 as well as a separation between the access terminals 84, 85, 88.

As it turned out Fig. 1 results, the lid 2 can be attached to different positions on the separator base 1, as shown by the holding devices 8 and 8 'in Fig. 1 is shown, so that the connection direction of the separator lower part 1 can be selected as required and it is ensured that the cover 2 can always be used and articulated by means of its pivoting feet 7 in the lower part of the separator base.

Claims (9)

1. Safety load-break switch comprising a lower disconnector part (1) and a pivotable cover (2) arranged thereon, having receiving contacts (10, 11; 53 to 55, 80 to 82) for receiving contacts (4, 5) of fuse units (3), a first contact group (11; 53 to 55) being formed as plug contacts having a foot portion which in each case is passed through the lower disconnector part (1) and protrudes out of the lower disconnector part (1), the lower disconnector part (1) including access terminals (84, 85, 86) and being placeable on an adapter (18) in a different connection direction,
   the first contact group (11, 53, 54, 55) and a second contact group (10, 80, 81, 82), which are connected to the access terminals (84, 85, 86), being covered by a first and second contact protection cap (50, 51),
   the first and second contact protection caps (50, 51) each comprising insertion slits and integrated arc quenching chambers, the second contact protection cap (51) being formed removably with respect to the lower disconnector part (1),
   characterised in that the lower disconnector part includes locking devices (92, 93), which are provided for locking the lower disconnector part (1) to the adapter (18), the adapter (18) containing associated recesses (95, 96) with which the locking devices (92, 93) engage,
   the removable contact protection cap (51) having a detection device (98, 99) which can be acted on from by the locking device (92, 93) and which allows or prevents fitting of the removable contact protection cap (51) as a function of the position of the locking device (92, 93).
2. Safety load-break switch according to claim 1, characterised in that the access terminals (84, 85, 86) are arranged on an end face and covered by the second, removably mounted contact protection cap (51).
3. Safety load-break switch according to claim 1 or claim 2, characterised in that the second contact protection cap (51) is provided with separating strips (90, 91) which can be brought into engagement with the first contact protection cover cap (50).
4. Safety load-break switch according to any of the preceding claims, characterised in that each contact protection cover cap (50, 51) comprises bevelled faces (98a) on the face facing the other contact cover cap (50, 51).
5. Safety load-break switch according to claim 4, characterised in that the detection device (98, 99) is fixed in place by a contoured guide curve formed on the lower face of the removable contact protection cap (51).
6. Safety load-break switch according to claim 5, characterised in that the detection device (98, 99) comprises a contour corresponding to the head of the respective locking device (92, 93).
7. Safety load-break switch according to claim 6, characterised in that the contour of the guide curves of the detection device (98, 99) is formed by a strip projecting from the removable contact protection cap (51).
8. Combination of an adapter (18) with a safety load-break switch according to any of the preceding claims, wherein the adapter (18) comprises a plurality of contact openings (18a, 18b; 87a, 87b, 87c, 88a, 88b, 88c) for receiving a foot portion (12) of the safety load-break switch and comprises a contact rail (20) which extends in the region of the contact openings (18a, 18b; 87a, 87b, 87c, 88a, 88b, 88c).
9. Combination according to claim 8, characterised in that the contact openings (18a, 18b; 87a, 87b, 87c, 88a, 88b, 88c) of the adapter (18) are formed substantially symmetrically about a central axis of the adapter (18) in an end cover (18a).

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