EP3389142A1 - Adapter for feeding in aggregate - Google Patents

Abstract

Adapter for coupling a network replacement station provided with the low-voltage supply of a local network station to the local network station,
- With an adapter housing (4) and
- with a low-voltage high-performance contact blade (6),
- wherein the adapter housing (4) has an electrically insulating material,
- wherein the low-voltage high-performance contact blade (6) is at least partially enclosed by the adapter housing (4),
- wherein the low-voltage high-performance contact blade (6) has a first blade contact (8), which extends freely projecting from a first side (10) of the adapter housing,
- wherein the low-voltage high-power contact blade (6) has a second blade contact (12), which extends from a second side (14) of the adapter housing (4) cantilevered,
- wherein the first side (10) of the adapter housing (4) faces away from the second side (14) of the adapter housing (4),
- Wherein the first blade contact (8) and the second blade contact (12) opposite ends of the low-voltage high-performance contact blade (6) form and
- wherein the first blade contact (8) and the second blade contact (12) of the low-voltage high-power contact blade (6) for insertion in terminals (40) of a low-voltage high-power terminal block (42) of the local network station (36) or for insertion in terminals of a low-voltage three-pole high-performance Trenners the local network station are set up.

Description

The invention relates to an adapter for coupling a provided for low-voltage power supply of a local network emergency power system with the local network station.

Local network stations serve the low-voltage supply of end customers. The medium voltage (about 1 kV to 30 kV) is transformed down by transformers to the usual household low voltage (230 V or 400 V).

A local network station must be disconnected from the network during maintenance or switching work. In this case, an uninterruptible power supply for consumers should nevertheless be ensured, so that the end customer does not experience any supply gaps. For this purpose, the affected consumers can be supplied by neighboring local network stations. If this is not possible, a mains power supply system (NEA) will be provided for the continuous supply of the consumers. With the aid of the emergency power system, energy is supplied to the low-voltage side of the local network station before the local network station itself is taken off the grid. The emergency power system is usually a mobile generator with an output of 275 - 500 kW.

In order to connect the emergency power system to the local power station for power supply, lamellar terminals are known to the exposed areas of busbars of the local network station can be attached. In some cases, however, the busbars of local network stations are so compactly equipped that it is not possible to fasten such a lamellar terminal to the busbar. In this case, in practice recourse is made to individually modified metallic contact blades to which the respective cable connection shoe of one phase of the emergency power system is fastened.

The modified contact blade is inserted into a low-voltage, high-performance busbar of the busbar instead of a high-voltage, low-voltage fuse. Alternatively, the modified contact blades are used in the area of a 3-pole low-voltage high-efficiency disconnector to feed the power of the emergency power system. When inserting such, modified contact blades, however, there is a risk of bridging between the busbars, which can cause an arc. Occupational safety may be impaired for the fitter concerned.

Against this background, the technical problem underlying the invention to provide an adapter that allows a reliable and secure connection of a network backup system with a local network station, especially in the event that a feed with known solutions, such as fin clamps or the like, is not possible.

The technical problem is solved by an adapter according to claim 1. Further embodiments of the invention will become apparent from the dependent claims and the description below.

The invention relates to an adapter for coupling a low-voltage supply of a local network station provided emergency power system with the local network station, with an adapter housing and a low voltage high power contact blade, the adapter housing comprising an electrically insulating material, the low voltage high power contact blade being at least partially enclosed by the adapter housing, the low voltage high power contact blade having a first blade contact extending from a first side of the first Adapter housing is cantilevered extends, wherein the low-voltage high-power contact blade has a second blade contact, which is cantilevered projecting from a second side of the adapter housing, wherein the first side of the adapter housing facing away from the second side of the adapter housing, wherein the first blade contact and the second Knife contact form opposite ends of the low-voltage high-power contact blade and wherein the first blade contact and the second blade contact of the low-voltage high-performance contact blade for insertion into terminals of a Niederspa tion high-performance terminal block of the local network station or for insertion into terminals of a three-pole low-voltage high-power disconnector of the local network station are set up.

Characterized in that the low-voltage high-power contact blade is received in the adapter housing in the manner described above, the adapter can be mounted securely, whereby the risk of bridging and the formation of arcs is reduced. Occupational safety for the fitter is improved by using the adapter.

According to a further embodiment, the adapter has a lug connection for connecting a cable lug to the low-voltage high-performance contact blade, the lug being enclosed in a state connected to the low-voltage high-performance contact blade at least in sections by the adapter housing. The connection of a Phase of a network replacement system with a cable lug can therefore be integrated into the adapter housing to achieve a reliable connection of the network replacement with the low voltage high-voltage power contact blade of the adapter. The contact between the cable lug and the low voltage high power contact blade may also be insulated from the environment by the adapter housing.

The adapter housing may be formed in two parts or in several parts. For example, the adapter housing may consist of two half-shells. The half-shells or parts of the multi-part adapter housing can be positively and / or non-positively and / or materially connected to each other to safely receive the low-voltage high-performance contact blade. The half-shells or parts of the multi-part adapter housing can e.g. be bolted together. Alternatively or additionally, the half-shells or parts of the multi-part adapter housing can be riveted together, glued or welded, or it can be provided for tool-free locking one or more snap connections.

The adapter housing may have one or more recesses for positive reception of the low-voltage high-performance contact blade. For example, shaped recesses complementary to the shape of the low voltage, high power contact blade may be formed in two half shells of the adapter housing to reliably receive the low voltage, high power contact blade.

The adapter housing may have one or more mold elements configured to mount the adapter to a low voltage, high power fuse-on push-in handle. Thus, a safe installation using standardized work equipment can be done.

The mold elements can be formed integrally or monolithically with the adapter housing or part of a two- or multi-part adapter housing. Accordingly, the shaped elements can be an integral part of two half shells of the adapter housing, for example. Thus, the mold elements can be inexpensively integrated into the adapter housing.

Alternatively or additionally, one or more mold inserts can be provided, which are set up for mounting the adapter with a low-voltage high-performance fuse plug-on handle. The mold inserts can be inserted into recesses of the adapter housing and protrude freely projecting out of the adapter housing, at least in sections, in order to allow the use of a low-voltage, high-performance fuse plug-in handle.

The adapter housing may have one or more recesses for receiving a screw connection formed between the high-voltage low-power contact blade and a cable lug. Thus, a releasable connection between the low-voltage high-performance contact blade and the cable lug may be formed, which is accommodated within the adapter housing.

The adapter may be configured to be received in a low voltage, high power terminal block intended to receive low voltage, high voltage fuses. For example, the adapter may be configured to fit into a receptacle for a NH3 fuse (Category 3: high voltage, low power fuse link, e.g., 500V, 630A) of a low voltage, high power connector block.

The adapter housing may have one or more form elements, such as a groove or the like, for securing a strain relief to have. By attaching a strain relief, for example, the slipping of the clamped in a low-voltage high-power terminal block adapter from the terminal contacts of the low-voltage high-power terminal block can be avoided.

Fig. 1

einen erfindungsgemäßen Adapter in einer perspektivischen Ansicht;

Fig. 2

den Adapter aus Fig. 1 in zwei Seitenansichten;

Fig. 3

Teile des Adapters aus Fig. 1;

Fig. 4

Teile des Adapters aus Fig. 1 mit einem angeschlossenen Kabelschuh;

Fig. 5

eine Spannungseinspeisung mittels einer Netzersetzanalage.

The invention will be described in detail with reference to an exemplary embodiments illustrative drawing. Each show schematically:

Fig. 1

an adapter according to the invention in a perspective view;

Fig. 2

the adapter off Fig. 1 in two side views;

Fig. 3

Parts of the adapter Fig. 1 ;

Fig. 4

Parts of the adapter Fig. 1 with a connected cable lug;

Fig. 5

a voltage supply by means of a Netzersetzanalage.

FIG. 1 shows an adapter 2 for coupling a provided for low voltage power supply of a local network emergency power system with the local network station. FIG. 2 shows the adapter FIG. 1 in two side views.

The adapter 2 has an adapter housing 4. The adapter housing 4 has an electrically insulating material. In the present case, the adapter housing 4 has been made of POM (polyoxymethylene).

The adapter 2 has a metallic low voltage high power contact blade 6. The low voltage high power contact blade 6 is partially enclosed by the adapter housing 4.

The low-voltage high-performance contact blade 6 has a first blade contact 8, which extends from a first side 10 of the adapter housing 4 projecting freely. The low-voltage high-power contact blade 6 has a second blade contact 12, which extends freely projecting from a second side 14 of the adapter housing 4. The first side 10 of the adapter housing 4 faces away from the second side 14 of the adapter housing 4.

The first blade contact 8 and the second blade contact 12 form opposite ends of the high voltage low voltage contact blade 6. The first blade contact 8 and the second blade contact 12 of the high voltage low voltage contact blade 6 are for insertion into terminals of a low voltage high power terminal block of the local power station or for insertion into terminals of a three pole Low voltage high-power disconnector of the local network station.

The blade contacts 8, 12 have a mounting boss 15 to facilitate insertion into terminals of a low voltage, high power terminal block.

The adapter housing 4 is in this case made in two parts and consists of two half-shells 16, 18. The half-shells 16, 18 are made of POM and have been produced by machining. The half-shells 16, 18 are detachably connected to one another by screw connections 20.

In the adapter housing 4, a mold insert 22 is accommodated, which consists of metal and for mounting the adapter 2 with a high-voltage low-voltage fuse-Aufsteckgriff is set up. For this purpose, the mold insert 22 on two free from the adapter housing 4 projecting handle tabs 24.

The adapter 2 has a cable lug connection 26 for connecting a cable lug to the low-voltage high-performance contact blade 6. The lanyard is at least partially enclosed by the adapter housing 4 in a state connected to the low-voltage high-performance contact blade 6.

The adapter housing 4 has a groove 27 for attachment of a strain relief.

FIG. 3 shows the half-shell 16 and the contact blade 6 separately in a disassembled state. The half-shell 16 has shaped elements, in the present case a recess 28, for the positive reception of the low-voltage high-power contact blade 6. Further, the recess 28 serves to receive a screw connection formed between the low-voltage high-performance contact blade and a cable lug of screw and nut.

A recess 29 serves to receive the mold insert 22. A groove 31 serves to attach a strain relief.

Fig. 4 shows the contact blade 6 with a connected by a screw connection 30 cable lug 32. The contact blade 6 is inserted into the half-shell 16. The cable lug 32 is attached to the end of a line 34 which can be connected via a bayonet lock to a network replacement system ( Fig. 5 ).

Fig. 5 shows a local network station 36 with an arrangement of three adapters 2, via each of which a phase A, B, C of a network backup system 38 is fed. The adapters 2 are seated in connection terminals 40 of a low-voltage high-power terminal block 42 of the local network station 36. The lines 34 are each connected via a bayonet lock 44 to the emergency power system 38.

reference numeral

2

adapter

4

adapter housing

6

Low voltage high performance contact blades

8th

first knife contact

10

first page

12

second knife contact

14

second page

15

assembly phase

16

half shell

18

half shell

20

screw connection

22

mold insert

24

grip tab

26

Spade connection

27

groove

28

recess

29

recess

30

screw connection

31

groove

32

lug

34

management

36

Local network stations

38

Power system

40

terminals

42

Low-voltage high-power terminal block

44

bayonet catch

A

phase

B

phase

C

phase

Claims (6)

Adapter for coupling a network replacement station provided with the low-voltage supply of a local network station to the local network station, - With an adapter housing (4) and - with a low-voltage high-performance contact blade (6), - wherein the adapter housing (4) has an electrically insulating material, - wherein the low-voltage high-performance contact blade (6) is at least partially enclosed by the adapter housing (4), - wherein the low-voltage high-performance contact blade (6) has a first blade contact (8), which extends freely projecting from a first side (10) of the adapter housing, - wherein the low-voltage high-power contact blade (6) has a second blade contact (12), which extends from a second side (14) of the adapter housing (4) cantilevered, - wherein the first side (10) of the adapter housing (4) faces away from the second side (14) of the adapter housing (4), - Wherein the first blade contact (8) and the second blade contact (12) opposite ends of the low-voltage high-power contact blade (6) form and - wherein the first blade contact (8) and the second blade contact (12) of the low-voltage high-power contact blade (6) for insertion in terminals (40) of a low-voltage high-power terminal block (42) of the local network station (36) or for insertion in terminals of a low-voltage three-pole high-performance Trenners the local network station are set up. Adapter according to claim 1, - with a lug connection (26) for connecting a cable lug (32) to the low-voltage high-performance contact blade (6), - Wherein the cable lug (32) in a state connected to the low-voltage high-power contact blade (6) is at least partially enclosed by the adapter housing (4). Adapter according to one of the preceding claims, wherein the adapter housing - Is formed in two parts or more parts
and or - One or more recesses (28) for positively receiving the low-voltage high-power contact blade has. Adapter according to one of the preceding claims, - wherein the adapter housing (4) has one or more form elements, which are adapted for mounting the adapter with a low-voltage high-power fuse-Aufsteckgriff and / or - One or more mold inserts (22, 24) are provided, which are adapted for mounting the adapter (2) with a low-voltage high-power fuse-Aufsteckgriff. Adapter according to one of the preceding claims, - wherein the adapter housing (4) has one or more recesses for receiving a formed between the low-voltage high-power contact blade and a cable lug screw connection (30). Adapter according to one of the preceding claims, - wherein the adapter housing (4) has a form element (31), such as a groove (31) or the like, for fastening a strain relief.

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