WO2009037022A1

WO2009037022A1 - Fused load disconnector with double contact guard for variable connecting direction

Info

Publication number: WO2009037022A1
Application number: PCT/EP2008/059472
Authority: WO
Inventors: Alex Büttner; Hans-Jürgen Henning
Original assignee: Wöhner GmbH & Co. KG Elektrotechnische Systeme
Priority date: 2007-09-18
Filing date: 2008-07-18
Publication date: 2009-03-26
Also published as: ES2540068T3; PL2188821T3; EP2188821A1; DE102007044390B3; CN101816057A; EP2188821B1; CN101816057B

Abstract

The present invention relates to a fused load disconnector with a disconnector bottom and a pivotable cover arranged thereon, with holder contacts for holding the contacts of fuse units, wherein a first contact group is designed as plug contacts with a base section leading through the disconnector bottom and protruding from the disconnector bottom, wherein the disconnector bottom can be placed on an adapter in different connecting directions, wherein the adapter comprises a plurality of contact openings for the alternative guidance of the base section and a contact rail running in the region of the contact openings, the first contact group and a second contact group, connected to the input connections, being covered by a first and a second contact guard cap, wherein the first and second contact guard caps each comprise insertion slits and integrated light arch quenching chambers, wherein the second contact guard cap is designed such that it can be removed from the disconnector bottom.

Description

Fuse switch disconnector with double contact protection for changeable connection direction

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.

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 with a disconnector base and a hinged lid disposed thereon, with receiving contacts of contacts of fuse units, wherein a first contact group are formed as plug contacts with a foot portion which is performed with the separator base and protruding from the separator base, wherein the separator base with different connection direction can be placed on an adapter, wherein the adapter has a plurality of contact openings for alternative guidance of the foot portion and a contact rail which extends in the region of the contact openings, characterized in that the first contact group and a second contact group, which are connected to the access terminals, respectively is covered by a contact protection hood, that the first and second contact protection hood each have insertion slots and integrated arc extinguishing chambers, wherein the second contact protection ge is designed to be removable over the separator base.

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 is a lid pivotally mounted, wherein the lid relative to the lower part of the separator can be mounted rotated by 180 °. In the case of the fuse switch disconnector according to the invention, the disconnector lower part can be mounted in two different connection directions on an adapter, which in turn can be fastened to the current 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 a further development of the fuse switch disconnector according to the invention, the disconnector base is provided with a locking device which has a detection input. is associated with direction of the removable contact protection hood, such that when not made locking the locking device, the cover on the lower part of the separator is not placed, while the removable contact guard on the separator base is then placed when the locking device is moved to its locked position.

The fiction, contemporary fuse switch disconnectors will be described below with reference to the drawing to explain other features.

Show it:

1 is a schematic representation of a fuse switch disconnector with a separator base and the associated adapter, 2 is 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 is a representation corresponding to FIG. 1, in which the separator base is rotated by 180 ° with respect to FIG. 1, FIG.

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

5 is a perspective top view of the adapter,

6 is a perspective view of the contact protection hoods,

7 is a bottom view of the separator base,

Fig. 8 is a plan view of the separator base, and

9 is 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 separator base 1 and a preferably pivotally hinged on the separator base 1 cover 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 indicated in Fig. 2 with 3, the contact blades are indicated at 4 and 5. As is apparent from Figures 1 and 2, the lid 2 is pivotally mounted on pivoting feet 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 the separator base 1 are two pairs of such holders 8, 8 'which serve to fix the lid either to the pair of holders 8 or to the pair of holders 8', depending on how the separator base is opposite the associated one , to be described later adapter 18 is set. 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.

In the embodiment shown in Figs. 1 and 2, 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 bottom Ib and protrudes over the Trennerunterteilunterseite Ia over a predetermined distance. The outgoing contact 10 has in the illustrated embodiment substantially and preferably L-shape and is attached to the Trennerunterteilboden Ib by screw means 13 and further carries on the parallel to the Trennerunterteililebene leg 10a a clamping screw 14 for clamping a line end or the like. The plug-in contact 11 is fastened by means of a leg IIa projecting perpendicularly to the foot section 12 and screw means 15 on the lower part of the separator base of the lower part of the separator 1.

In the embodiment shown in FIGS. 1 and 2, the plug contact 11 is designed such that the foot section 12 is offset parallel to its receiving section IIb for the blade contact of the associated securing unit 3 by forming a shoulder section 11c between the section IIb and the contact section 12. In detail, reference is made expressly to FIG. 1. The shoulder portion 11 c is located on the Trennerunterteilboden Ib of Trennerunterteils 1. In the Trennerunterteilboden Ib is an opening 17 through which the plug contact 11 is guided with its foot portion 12 therethrough. In Trennerunterunterboden Ib further screw means 16 are provided which serve to be able to attach the separator base 1 to the underlying adapter 18 can.

As is apparent from Fig. 1 and 2, the contact blades 4, 5 reach after closing the lid 2 in the receiving areas 10b, I Ib 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 created.

The fiction, contemporary switching device 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 section 12 and the contact rail 20 is made. This takes place when placing the Trennerunterteils 1 on the adapter 18th

In the embodiment shown in FIGS. 1 and 2, the contact rail 20 is provided with two defined contact regions 21, 22, as will be explained in more detail below. If the isolator bottom part 1 according to FIGS. 1 and 2 is placed on the adapter 18, the foot section 12 comes into contact with the region 22 of the contact rail 20, which in turn can be brought into electrical connection with one of the busbars 24, 28, 29 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.

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 are biased in a clamping position, as is also known per se. The contact legs 30, 31 and 32, 33 run essentially parallel to one another and traverse lie upwardly expanding introduction 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 is formed in this embodiment according to the upper contact portion with the parts 32, 33, 36 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 to make contact with the associated busbar, as shown in FIG. 2 can be seen.

Fig. 3 shows a representation corresponding to Fig. 1, in which, however, the separator base 1 is rotated relative to FIG. 2 by 180 °, such that the plug contact 11 in FIG. 3, in contrast to FIGS. 1 and 2, on the left side of the isolator base 1, ie in the vicinity of the lid 2. The lid 2 is inserted in the embodiment of FIG. 4 in the holding means 8 'and pivotally mounted around this. By arranging the holding devices 8, 8 'in pairs, it is thus possible to fasten the cover 2 to the holding devices 8 or, alternatively, according to FIG. 4, to the holding devices 8', so that the separator lower part 1 is rotated by 180 ° with respect to FIGS 2 can be provided rotated, whereby the outgoing contacts of Fig. 1, 2 are opposite direction.

In the embodiment of FIGS. 1 and 2, the outgoing contacts are "up", ie in the region of attachment of the lid 2, while in the embodiment of FIG. 4, the outgoing contacts 10 are "down", ie facing away from the lid 2 Side of the isolator base. 3, the foot portion 12 comes into contact with the area 21, which has the same configuration as the area 22 of FIG as well as above the area 22 openings 18a, 18b are executed in order to insert the plug contact 11 accordingly.

The fiction, contemporary switching device has per pole corresponding contacts 10, 11 at. As can be seen from FIGS. 2 and 4, one contact rail 20 is provided per pole or per bus bar 24, 28, 29. 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 shown in connection with FIGS. 1 to 3, is proposed in the patent application DE 10 2006 022 374 of May 12, 2006.

4 shows an exploded view of the fuse switch disconnector according to the invention with the cover 2, the isolator base 1 and the adapter 18. According to the present invention, the illustrated preferred embodiment has a fixed contact protection 50 in the form of a contact protection hood 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 Figs. 1 to 3. As is further apparent from Fig. 4, the contact protection cover 50 is provided with slots 58 to 60, by means of which the poles or contact blades of the fuse units in the relevant contact tongues 53, 54, 55 can be inserted. The contact protection hood 50 has a lid 50a running substantially parallel to the surface of the separator upper part 1, on which hood-shaped elevations 60a, 60b, 61a, 61b, 62a, 62b with an intermediate direction in the direction of the center of the divider bottom part 1 are provided. Connect the insertion slots. The dome-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 can be seen from the drawing corresponding to FIG.

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 contact tongues 80 to 82 are connected via conductors, not shown in FIG. 4, to the access terminals 84, 85, 86 and correspond to the contacts 10 in FIGS. 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 direction shown in Fig. 1 or rotated 180 ° thereto can be placed on the adapter 18. From the above description, it can be seen that when using contact tongues in the form of plug contacts of the type indicated 12 in FIG. if these plug contacts have two legs 39, 40 separated from each other, an opening pair is required in the top of the adapter 18 for each such pair of legs. 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, reference is made to FIGS. 1 to 3, 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 firmly inserted partitions 90, 91 which are provided either as separate elements or sprayed together with the contact protection cover 51 could be. 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 further shows that the separator lower part includes locking means, preferably in the form of locking buttons, which are provided for locking the separator base 1 with the adapter 18, wherein the adapter 18 includes associated receptacles 95, 96, in which engage the locking devices.

5, three aperture pairs 87a, 87b, 87c are provided in the end cover 18a and opening pairs 88a, 88b, 88c are symmetrical to the center line, through which the foot sections in the form of plug contacts, for example in FIG. be passed to engage around the corresponding 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.

6 shows a perspective view of only the contact protection hoods 50 and 51 for clarifying their operating state as soon as the removable contact protection hood 51 is firmly inserted into the isolator bottom part.

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, e.g. the closing of the lid 2 to facilitate. One of these bevels is designated 98 in FIG. 6 with respect to the dome-shaped elevation 60a and is correspondingly formed in the other dome-shaped elevations.

In the hood-shaped elevations are per pole each extinguishing chambers for extinguishing arcs that may occur when removing the fuse units, wherein these extinguishing chambers are provided in the dome-shaped elevations of both contact protection hoods 50, 51, so that extinguishing chambers are present in each case at the necessary contact areas, independently of the direction of connection of the divider bottom part 1.

Fig. 7 shows a perspective view of the separator base 1 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 in the form are formed, as shown in connection with FIG. 2. According to Fig. 7, the locking means 92, 93 are shown with their reaching into the adapter 18 foot section, 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. The contacts 80 to 82 have, for example, the shape, as shown in Fig. 2 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 be moved 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 detachable contact protection hood 51 has, as shown in FIG. 9, webs or guide curves 98, 99 on the lower walls, which have a contour corresponding to the head of the locking devices 92, 93 and which are aligned in such a way that, when the lock is produced, 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 Trerrnerunterteil. 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. From Fig. 9 it is further apparent that the partitions 90, 91 extend not only above the contact protection covers 51, 52, but extend through corresponding slots between the contact tongues down and thus a separation or isolation of all adjacent contact tongues or plug contacts to to the bottom portion of the Trennerunterteils 1 as well as a separation between the access terminals 84, 85, 88 ensure.

As is apparent from Fig. 1, the lid 2 can be fixed at different positions on the separator base 1, as shown by the holding means 8 and 8 'in Fig. 1, so that the connecting direction of the separator base 1 can be selected as needed and it is ensured that the lid 2 can always be used and articulated by means of its pivoting feet 7 in the lower region of the separator lower part.

Claims

claims

1. Fuse switch disconnector with a disconnector base (1) and a pivotable lid (2) arranged thereon, with 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) are designed as plug contacts with a foot section, which is respectively performed by the lower part of the separator (1) and protrudes from the lower part of the separator (1), wherein the lower part of the separator (1) with different connection direction to an adapter ( 18), characterized in that the first contact group (11) and a second contact group (80, 81, 82), which are connected to the access terminals (84, 85, 86) by a first and second contact protection hood (50, 51), the first and second contact protection hoods (50, 51) each have insertion slots and integrated arc extinguishing chambers, the second contact protection hood (51) being opposite the disconnector Part (1) is designed to be removable.

2. fuse switch disconnectors according to claim 1, characterized in that the access terminals (84, 85, 86) are arranged on one end face and by the second, removably mounted contact protection hood (51) are covered.

3. Fuse switch-disconnector according to claim 1 or 2, characterized in that the second contact protection hood (51) with separating webs (90, 91) is provided which can be brought into engagement with the first contact protection cover hood (50).

4. Fuse switch-disconnector according to one of the preceding claims, characterized in that each Berührungsschutzabdeckhauben (50, 51) on the other Berührungsabdeckhaube (50, 51) facing side beveled surfaces (98a).

5. Fuse switch-disconnector according to one of the preceding claims, characterized in that the removable cover (51) by a locking element (92, 93) acted upon detection means (98, 99), depending on the position of the locking device (92, 93) a Attachment of the removable contact protection cover hood (50) allows or prevents.

6. fuse switch disconnector according to claim 5, characterized in that the detection device (98, 99) is defined by a formed on the lower side of the removable contact protection cover (51) contoured guide curve.

7. fuse switch disconnector according to claim 6, characterized in that the detection device (98, 99) has a head of the respective locking device (92, 93) corresponding contour.

8. Fuse switch-disconnector according to claim 7, characterized in that the contour of the guide curves of the detection device (98, 99) by one of the removable contact protection cover (51) projecting web is formed.

9. fuse switch disconnector according to at least one of the preceding claims, in particular for use on an adapter (18) having a plurality of contact openings (18a, 18b; 87a, 87b, 87c, 88a, 88b, 88c) for receiving a foot portion (12) and a contact rail (20) extending in the region of the contact openings (18a, 18b, 87a, 87b, 87c, 88a, 88b, 88c).

10. A circuit breaker according to claim 9, characterized in that the contact openings (18a, 18b, 87a, 87b, 87c, 88a, 88b, 88c) of the adapter (18) are substantially symmetrical to a central axis of the adapter (18) in a cover plate (18a) are formed.