DE202019103321U1 - Surge protection device with voltage tap - Google Patents

Abstract

Overvoltage protection device for installation on a busbar, comprising a housing (1) with a coupling region (2) for mechanically and electrically contacting a busbar, surge arresters for the protection of low-voltage supply systems, which are electrically connectable to the busbar by means of the coupling region (2), and a voltage tap which is electrically connectable by means of the coupling portion (2) to the busbar to provide a voltage tap for powering an external device, in particular an external measuring or control unit, wherein the voltage tap comprises an overcurrent protection, for example a replaceable fuse (6).

Description

The invention relates to an overvoltage protection device for installation on a busbar system according to the preamble of claim 1.

Recent standards have made the installation of Smart Meter Gateways (SMG) mandatory for the intelligent collection of consumer data for end users of power companies. Since the data and the SMG are owned by the utility company, the power supply for the SMG must be tapped by the energy utility company in the pre-meter area (UAR). To protect the SMG or the feeding lines in the event of a fault, they must be protected by separate fuses.

All major manufacturers of low-voltage protection components are already offering solutions in the form of dedicated circuit breakers, fuses or miniature fuses. However, these must also be installed separately and thus restrict the already scarce space. To enable the electrician to install on a typical 40mm track system, e.g. In Germany, for the lower terminal compartment of the meter cabinet, to further facilitate, manufacturers now offer more convenient power supply adapters (ESA) (e.g., Hager K96ESA5) in addition to the conventional busbar terminals. Since the space in the lower connection space does not increase, but more and more devices are to be installed in this installation environment, the installation and wiring of the components thus required for the installer in practice is extremely difficult.

In light of the above, it is an object of the present invention to provide a power supply for metering and measuring devices in the pre-meter area, which is space-saving and easy to install and preferably also ensures overvoltage protection.

The object is achieved by a surge protection device according to claim 1. Advantageous embodiments emerge from the subclaims.

A central idea of the present invention is to integrate the voltage tap required for the power supply of the SMGs into the overvoltage protection device, which is required anyway in the pre-meter area. Thus, no separate component for the power supply of the SMGs is needed, which space in the pre-meter area can be saved. At the same time, overvoltage protection for the SMG is provided in the overvoltage protection device, so that no further, separate component is required for this purpose.

Overall, a space-saving and easy-to-install solution for the power supply of the SMG is created with the surge protection device according to the invention, with the addition of an overvoltage protection for the SMG is also provided.

• 1 eine perspektivische Ansicht eines erfindungsgemäßen Überspannungsschutzgeräts;
• 2 eine weitere perspektivische Ansicht des Überspannungsschutzgeräts aus 1;
• 3 eine Ansicht des Überspannungsschutzgeräts aus 1 mit einer angrenzend angeordneten Einspeiseschiene;
• 4 ein schematisches Schaltbild, in dem der Anschluss eines Spannungsabgriffs im Überspannungsschutzgerät illustriert ist.

The invention will be described below with regard to further features and advantages with reference to an embodiment which is explained in more detail with reference to FIGS. Hereby show:

• 1 a perspective view of an overvoltage protection device according to the invention;
• 2 another perspective view of the surge protective device 1 ;
• 3 a view of the surge protective device 1 with an adjacently arranged feed rail;
• 4 a schematic diagram illustrating the connection of a Spannungsabgriffs in the surge protective device.

1 shows a perspective view of an embodiment of an overvoltage protection device according to the present invention. The overvoltage protection device has a housing 1 on, at the back of a coupling area 2 is arranged for mechanical and electrical contacting of a busbar. The coupling area 2 has coupling means which are arranged at a grid spacing of a busbar system and allow in a known manner an immediate mounting on a busbar system for mechanical and electrical connection to the conductor rails.

The coupling means are for example designed so that they allow a direct mechanical locking of the overvoltage protection device on the busbar system and at the same time produce an electrical contact of the conductor rails, as for example in the DE 20 2004 011 908 U1 is described.

Inside the case 1 are several (not shown) electrically wired surge arrester, in particular spark gaps located. The overvoltage protection device according to the figures is based on a configuration of a combined arrester having a plurality of integrated and electrically wired surge arresters. Coming back to DEHN + SÖHNE GmbH & Co. KG, Neumarkt / Opf. / Germany, multi-pole combi-arresters for main power supply systems belong to State of the art. Such combined arresters marketed under the brand name "DEHNventil ZP" are specially designed for a busbar connection panel of a meter location.

In addition to the known function of protecting low-voltage supply systems, the overvoltage protection device also provides a power supply for an external device, in particular an external measuring or control unit such as an SMG. As in 1 can be seen, the surge protection device has for this purpose on the housing 1 a power connection 7 on, which allows a connection of the external device to a voltage tap, which is integrated in the surge protective device. The voltage tap is over the coupling area 2 as well as the surge arrester can be electrically and mechanically coupled to the busbar system and thus allows a direct voltage tap before protecting against overvoltage protection device low-voltage supply system. For easy connection with the external device is the voltage tap on the power connector 7 to the outside of the case 1 led so that after installation of the surge protective device, the external device can be connected directly.

In order to provide a corresponding protection for the external device, the voltage tap has an overcurrent protection, which in the present embodiment by a fuse 6 is formed on the housing 1 is accessible and can be replaced without having to remove the overvoltage arrester.

The overvoltage protection device also has a status display 5 for optical indication of an overvoltage event, as well as a PE connection 4 , On a side wall of the housing 1 the overvoltage protection device has a recess 3 on, which allows the surge protection device and an associated feed rail for the low-voltage supply system to be protected independently of each other to assemble and disassemble. The overvoltage protection device also has an FM connection 8th for a change-over.

2 shows a further perspective view of the surge protective device 1 , The connections 7 and 8th have here plug with a PUSH-IN connection technology, which allow a fast connection of external devices.

3 shows the surge protection device 1 with an adjoining feed rail 9 in the recess 3 of the housing 1 protrudes, as provided in a typical installation situation in a meter cabinet.

4 FIG. 3 is a schematic circuit diagram illustrating the connection of the voltage tap in the overvoltage protection device. The voltage tap has the fuse 6 as overcurrent protection and the connection 7 on and is in the surge protection device so with the coupling area 2 connected in the mounted state of the surge protective device, the N-rail and the L1 Rail to provide a voltage tap from these rails. It would also be possible to configure the overvoltage protection device so that the voltage tap is taken from other busbars.

LIST OF REFERENCE NUMBERS

1

casing

2

coupling region

3

recess

4

PE connection

5

status display

6

fuse

7

power connection

8th

FM connection

9

Einspeiseschiene

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 202004011908 U1 [0010]

Claims (2)

Overvoltage protection device for installation on a busbar, comprising a housing (1) with a coupling region (2) for mechanically and electrically contacting a busbar, surge arresters for the protection of low-voltage supply systems, which are electrically connectable to the busbar by means of the coupling region (2), and a voltage tap which is electrically connectable by means of the coupling portion (2) to the busbar to provide a voltage tap for powering an external device, in particular an external measuring or control unit, wherein the voltage tap comprises an overcurrent protection, for example a replaceable fuse (6). Overvoltage protection device after Claim 1 wherein the voltage tap has a power connection (7) for connecting an external device, which is arranged on the housing (1).

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