DE202019101518U1 - Surge protection device with voltage tap - Google Patents

Abstract

Surge protection device for installation on a busbar, comprising a housing (1) with a coupling area (2) for mechanical and electrical contacting of a busbar, surge arresters for protecting low-voltage supply systems that can be electrically connected to the busbar by means of the coupling area (2), and a voltage tap which can be electrically connected to the busbar by means of the coupling region (2) in order to provide a voltage tap for supplying power to an external device, in particular an external measuring or control unit.

Description

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

Due to standards that have recently come into force, the installation of smart meter gateways (SMG) for the intelligent acquisition of consumer data is mandatory for end customers of energy supply companies. Since the data and the SMG are owned by the energy supply company, the power supply for the SMG must be tapped by the energy supply company in the pre-meter area (UAR). In order to protect the SMG or the supply lines in the event of a fault, these must be protected by separate fuses.

All major manufacturers of low-voltage protection components already offer solutions in the form of dedicated circuit breakers, fuses or miniature fuses. However, these must also be installed separately and thus further restrict the already limited space. For the electrician, the installation on a typical 40mm rail system, which e.g. in Germany for the lower terminal compartment of the meter cabinet, to make it even easier, manufacturers now offer more convenient supply adapters (ESA) (e.g. Hager K96ESA5) in addition to the conventional busbar terminals. Since the space in the lower connection compartment is not increasing, but more and more devices are to be installed in this installation environment, the installation and wiring of the components required in this way is extremely difficult in practice for the installer.

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

The object is achieved by an overvoltage protection device according to claim 1. Advantageous refinements result from the subclaims.

A core idea of the present invention is to integrate the voltage tap required for the voltage supply of the SMG into the overvoltage protection device, which is required anyway in the pre-counter area. This means that no separate component is required for the power supply of the SMG, which can save space in the pre-meter area. At the same time, an overvoltage protection for the SMG can be provided in the overvoltage protection device, so that no further separate component is required for this.

Overall, the overvoltage protection device according to the invention provides a space-saving and easy-to-install solution for the voltage supply to the SMG, with which an overvoltage protection for the SMG can also be provided at the same time.

• 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 is also described below with respect to further features and advantages using an exemplary embodiment which is explained in more detail with reference to the figures. Here show:

• 1 a perspective view of a surge protector according to the invention;
• 2nd a further perspective view of the surge protective device from 1 ;
• 3rd a view of the surge protector from 1 with an adjacent feed rail;
• 4th is a schematic circuit diagram illustrating the connection of a voltage tap in the surge protective device.

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

The coupling means are designed, for example, in such a way that they enable the overvoltage protection device to be mechanically latched directly onto the busbar system and, at the same time, make electrical contact with the conductor rails, as is shown, for example, in FIG DE 20 2004 011 908 U1 is described.

Inside the case 1 are several (not shown) electrically wired surge arresters, in particular spark gaps. The surge protection device according to the figures is based on a configuration of a combination arrester with a plurality of integrated and electrically wired surge arresters. Going back to DEHN + SÖHNE GmbH & Co. KG, Neumarkt / Opf. / Germany, multi-pole belong Combined arrester for main power supply systems to the state of the art. Such combination arresters sold under the brand name "DEHNventil ZP" are specially designed for a busbar connection field of a meter station.

In addition to the known function of protecting low-voltage supply systems, the surge 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 protector points to the housing for this purpose 1 a power connector 7 on, which enables 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 2nd as well as the surge arresters can be electrically and mechanically coupled to the busbar system and thus enables direct voltage tapping in front of the low-voltage supply system to be protected with the surge protective device. For easy connection to the external device, the voltage tap is via the power connector 7 to the outside of the case 1 out so that the external device can be connected directly after installing the surge protective device.

In order to be able to provide appropriate protection for the external device, the voltage tap has overcurrent protection, which in the present exemplary embodiment is provided by a fuse 6 is formed on the housing 1 is accessible and can be replaced without dismantling the surge protective device.

The surge protective device also has a status display 5 for the visual display of an overvoltage event and a PE connection 4th . On a side wall of the case 1 the surge protection device has a recess 3rd on, which allows the surge protection device and an assigned feeder rail for the low-voltage supply system to be protected to be assembled and disassembled independently. The surge protective device also has an FM connection 8th for a changer.

2nd shows a further perspective view of the surge protection device from 1 . The connections 7 and 8th have plugs with a PUSH-IN connection technology that enable quick connection of external devices.

3rd shows the surge protective device 1 with an adjacent feed rail 9 that are in the recess 3rd of the housing 1 protrudes, as provided in a typical installation situation in a meter cabinet.

4th represents a schematic circuit diagram in which the connection of the voltage tap in the surge protection device is illustrated. The voltage tap points the fuse 6 as overcurrent protection and connection 7 on and is in the surge protector with the coupling area 2nd connected that it contacts the N-rail and the L1-rail in the assembled state of the surge protection device in order to provide a voltage tap from these rails. It would also be possible to configure the surge protective device so that the voltage is tapped from other busbars.

Reference list

1

casing

2nd

Coupling area

3rd

Recess

4th

PE connection

5

Status display

6

Fuse

7

Power connection

8th

FM connection

9

Feed rail

QUOTES INCLUDE IN THE DESCRIPTION

This list of documents listed by the applicant has been generated automatically and is only included 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.

Patent literature cited

• DE 202004011908 U1 [0010]

Claims (3)

Surge protection device for installation on a busbar, comprising a housing (1) with a coupling area (2) for mechanical and electrical contacting of a busbar, surge arresters for protecting low-voltage supply systems that can be electrically connected to the busbar by means of the coupling area (2), and a voltage tap which can be electrically connected to the busbar by means of the coupling region (2) in order to provide a voltage tap for the power supply of an external device, in particular an external measuring or control unit. Surge protection device after Claim 1 , wherein the voltage tap comprises overcurrent protection, for example an exchangeable fuse (6). Surge protection device after Claim 1 or 2nd , 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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