EP1113525B1 - Terminal block, especially for measure transformer with transverse shunt arrangement - Google Patents

Abstract

The connector row includes at least one current rail arrangement arranged in the insulating casing, and at least one short-circuit bridge arrangement for a cross distribution of a voltage to at least one further, added row connector, especially for realizing a short-circuit bridge between the current rail arrangements of strung together converter connectors. At least one of the bridge arrangements is formed as switchable plug arrangement (19) which can be latched in at least two different positions at the insulating casing, within an insertion channel (21) extending into the insulating casing (1) up to the current rail arrangement (11).

Description

The invention relates to a terminal block according to the preamble of claim 1.

Such a terminal block is known from US 5658172. This font shows an electrical distribution arrangement on the single or multi-pin connector be placed in the slots of a terminal block, in the connector in turn cross bridges can be inserted. Has for this purpose the arrangement proven. Detection of the cross bridge switching status from the outside is not easily possible.

Transducer terminals of the generic type are from the company brochure "Measuring disconnect terminal blocks: Terminal blocks in the power supply "with the number 512096/3/97 known. As described in this prospectus, make special Transducer circuits make high demands on longitudinal and transverse separations, test taps as well as cross connections. To create a short circuit bridge between neighboring converter terminals are cross bridges - e.g. slider-like design - Can be used in various ways.

The invention aims to use terminal blocks with a short-circuit bridge To create cross bridges that are as easy to use as possible and a simple one and reliable differentiation between different switching states of the Allow shorting jumper.

The invention achieves this aim by the subject matter of claim 1.

After that, the cross jumper is at least a switchable cross jumper plug device two different positions on the insulating housing and can be locked quasi "captive" designed. The short circuit bridge is so simple Way "switch-like" designed that the switching state of the short circuit bridge can be recognized on the outside by the (converter) terminal block. This is done in that the Cross jumper plug a handle with a first locking means and one Has plug contact and that the insertion channel for the plug device with the second locking means cooperating with the first locking means. The invention enables a cross jumper to be used with terminal blocks as switchable potential distribution.

Further advantageous refinements of the invention can be found in the subclaims remove.

Fig. 1

ein Ausführungsbeispiel einer erfindungsgemäßen Wandler-Durchgangsreihenklemme;

Fig. 2a,b

Schnitte durch ein zweites Ausführungsbeispiel einer erfindungsgemäßen Wandler-Durchgangsreihenklemme oder einer Reihenklemme in zwei verschiedenen Betriebsstellungen;

Fig. 3a, b

Schnitte durch ein weiteres Ausführungsbeispiel einer erfindungsgemäßen Wandler-Durchgangsreihenklemme oder einer Reihenklemme in zwei verschiedenen Betriebsstellungen;

Fig. 4

das Ausführungsbeispiel aus Fig. 2 beim Entriegeln der "offenen" Stellung des Querbrückers bzw. der Kurzschlußbrücke.

The invention is described in more detail below with reference to the drawing using exemplary embodiments. It shows:

Fig. 1

an embodiment of a converter feed-through terminal block according to the invention;

2a, b

Cuts through a second embodiment of a converter feed-through terminal block according to the invention or a terminal block in two different operating positions;

3a, b

Cuts through a further embodiment of a converter feed-through terminal block according to the invention or a terminal block in two different operating positions;

Fig. 4

the embodiment of FIG. 2 when unlocking the "open" position of the cross bridge or the short circuit bridge.

1 shows a series of transducer terminals for a transducer disconnect terminal system, which each have an insulating housing 1, which with Locking means 3a, b for snapping the converter terminals onto a hat-shaped mounting rail 5 is provided. On its upper side facing away from the mounting rail 5 the insulating housing or the terminal support 1 with connection openings 7 for Provide connection of external conductors to connections 9. The two connections 9 are each connected to sections of a busbar arrangement 11. At the Busbar arrangement 11 are in the lower lateral areas of the terminal block in each case contact plates 13 are provided, which are contacted by cross bridges 15 which are inclined in approx. 45 ° to the mounting rail 5 from the outside of the terminal carrier inwardly extending cross bridge channels 17 can be used are. The cross bridges 15 allow an earth connection - e.g. to ground one secondary-side k-point - to be distributed over several converter terminals.

Different switching situations also require the option of Closing and opening a short circuit bridge between the strings Transformer terminals. Further cross-bridge devices serve as short-circuit bridges 19, which is similar to a kind of "switch" in different locking positions can be locked on the terminal support so that from their position on the insulating housing 1 their switching status can be seen.

The short-circuit bridges are - see in addition to FIG. 1 also FIGS. 2 to 4 - formed as a cross-connector 19, which is located in the insulating housing 1 to the busbar arrangement 11 extending insertion channel 21 are used. 1 is, for example, the cross jumper plug device 19 of the "front" two converter terminals in the depressed and thus activated state, while the cross jumper plug devices 19th the "rear" converter terminals further pulled out of the insulating housing 1 and are therefore deactivated.

The cross jumper plug devices 19 of FIGS. 2 to 4 each have a single or two-piece handle 23 with a first locking means 25 and a plug contact 27 on. The insertion channel 21 comprises a cooperating with the first locking means second locking means 29. The plug contact 27 has at least two in Openings 31 of the busbars 11 can be used lined up converter terminals Spring sections 33 and a connecting the spring sections 33 conductively Connection section 35.

As can be seen in FIG. 2, the first latching means of the handle 23 is a recess 25 and the second locking means of the insulating material housing 1 can be snapped together with the recess 25 or cooperating projection 29 is formed. The recess 25 - which can be seen particularly well in FIG. 4 - lies between two from the handle 33 projecting spring bars 37, 39 which are shaped such that with With the help of a screwdriver 41, pressing the spring bars 37, 39 and such loosening the handles 23 from the upper latching position and thus possibly also pulling them out from the plastic housing 1 is possible.

According to Fig. 2a and 3a, the handle is locked on the insulating housing 1 that the Plug contact 27 does not contact the busbar 11. 2b and 3b the plug contact 27, however, by the spring action of the spring portion 33 in the opening 31 of the busbar 11 locked, so that the short circuit bridge or Cross bridging is activated.

The exemplary embodiments in FIGS. 2 and 4 differ from those in FIG. 3 characterized in that the handle 23 of the connector 19 is formed in two pieces and a first grip part 23a molded onto the plug housing and one on the first Has handle part attachable and snap-on second handle part 23b, which serves to grip the molded grip part 23b, which extends over more than two lined up converter terminals 1 extend and several side by side may have lying plug contacts 27.

reference numeral

Insulated

1

latching means

3a, b

rail

5

connection openings

7

connections

9

Busbar configuration

11

contact plates

13

transverse links

15

Cross-bridge channels

17

Cross jumper plugs and sockets

19

introduction channel

21

Handle

23

handle parts

23a, b

recess

25

plug contacts

27

head Start

29

openings

31

spring sections

33

connecting portion

35

spring Bars

37, 39

screwdriver

41

Claims (7)

1. Terminal block, in particular a transformer block, having the following characteristics:

   an insulating housing made from plastic and at least one conductor rail arrangement disposed in the insulating housing,

   at least one cross-bridging arrangement which can be used as a short-circuit bridge or linking bridge for cross-distributing potential to at least one other terminal block connected in series, in particular for providing a short-circuit bridge between the conductor rail arrangements of transformer blocks connected in series,

   at least one of which cross-bridging arrangements is provided in the form of a switchable cross-bridge plug connector (19) which can be plugged into an insertion slot (21) for the cross-bridge plug connector (19) in at least two different positions on the insulating housing (1),

   characterised in that

   the cross-bridge plug connector (19) has a grip (23) with a first latching means (25) and a plug contact (27) and the insertion slot for the plug connector has a second latching means (29) which co-operates with the first latching means (25),

   the first latching means (25) on the grip (23) and the second latching means (29) co-operating with the first latching means (25) are disposed on the insulating housing (1) in such a way that the plug contact (27) is not in contact with the conductor rail arrangement (11) in a first latched position and

   the plug contact (27) has at least two spring portions (33) which can be latched into orifices (31) of the conductor rail arrangements (11) of terminal blocks connected in series - second latched position - and a connecting portion (35) conductively connecting the spring portions (33) to one another.
2. Terminal block as claimed in claim 1, characterised in that the first latching means of the grip (23) is provided in the form of a cut-out (25) and the second latching means of the insulating housing (1) is a projection (29) matching the cut-out.
3. Terminal block as claimed in one of the preceding claims, characterised in that the grip (23) is provided with two projecting spring webs (37, 39) between which the cut-out (25) for receiving the projection (29) on the insulating housing (1) is disposed.
4. Terminal block as claimed in one of the preceding claims, characterised in that the projecting spring webs (37, 39) are designed so that the projecting webs (37, 39) can be pushed in with the aid of a tool (41) and so that the grip (23) can be released from one of the latched positions.
5. Terminal block as claimed in one of the preceding claims, characterised in that the grip (23) of the plug connector is of a two-piece design and has a first grip part (23a) injection-moulded onto the plug housing and a second grip part (23b) which can be placed on the first grip part (23a).
6. Terminal block as claimed in one of the preceding claims, characterised in that the grip (23) of the plug connector is made in a single piece.
7. Terminal block as claimed in one of the preceding claims, characterised in that the first grip part (23a) extends across two or more than two terminal blocks connected in series.

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