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Standby power systems and grounding devices for standby power systems

A backup power and grounding device technology, applied to circuit devices, emergency protection circuit devices, electrical components, etc., to achieve the effect of improving operational reliability

Active Publication Date: 2017-04-19
SMA SOLAR TECH AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method can in principle also be used in earthing switches, but this is associated with additional complexity

Method used

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  • Standby power systems and grounding devices for standby power systems
  • Standby power systems and grounding devices for standby power systems
  • Standby power systems and grounding devices for standby power systems

Examples

Experimental program
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Embodiment Construction

[0023] figure 1 A circuit block diagram of a first embodiment of a grounding device for a backup power system is shown. The grounding device has connections through which the grounding device is coupled to the power supply network 10, the power consuming device 40, and the local power supply device 50 in the backup power system. The power supply network 10, the power consuming device 40 and the local power supply device 50 are not shown in the figure for reasons of clarity. The reference marks indicated at the respective connectors are based on the further explanation below figure 2 And be chosen.

[0024] The electrical energy is provided by the electrical energy supply network 10 (hereinafter referred to as the system 10) through the neutral conductor N10 and the conductor L. Instead of the single-phase embodiment shown, it is also possible to use a power supply system with multiple phases and corresponding multiple conductors. The conductor L and the neutral conductor N10 a...

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PUM

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Abstract

The invention relates to a grounding device for a backup power system for connecting a neutral conductor (N40) of a load arrangement (40) to a local ground connector (21) when the load arrangement (40) is isolated from an energy supply grid (10). The grounding device is characterized by the fact that the neutral conductor (N40) of the load arrangement (40) is connected to a neutral conductor (N50) of a local energy supply device (50) via a series circuit comprising two switches (1, 2), wherein a center tap (3) between the two switches (1, 2) is connected to the local grounding connection (21).

Description

Technical field [0001] The invention relates to a grounding device for a backup power system, which is used to connect the neutral conductor of the load equipment to the local grounding conductor when the load equipment is isolated from the power supply network. The invention further relates to a backup power system including such a grounding device. Background technique [0002] If the upper-level public power supply network, also known as the public grid, cannot provide the above-mentioned power, for example, due to a fault and / or error in the upper-level power supply network, the backup power system is used to provide power to the electrical load equipment. In this case, the switchover device performs the necessary isolation of the load equipment from the electrical energy supply network and is subsequently connected to local energy generating devices such as, for example, generators, photovoltaic systems and / or inverters, local energy The generating device is coupled to an e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02H11/00
CPCH02H11/001H02J9/06
Inventor C·阿勒特S·海因泽J-U·牧勒
Owner SMA SOLAR TECH AG