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Feed overload protection device and device used for current monitoring

A technology of overload protection and feeding device, which is applied to emergency protection circuit devices, emergency protection circuit devices, circuit devices and other directions for limiting overcurrent/overvoltage, and can solve problems such as not being able to achieve comprehensive protection.

Inactive Publication Date: 2013-01-02
SIEMENS AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, comprehensive protection against thermal overload of individual line sections of the consumer network cannot be achieved in this way
The limitation of the feed current by means of protective devices integrated in the energy generation system also does not allow comprehensive protection of individual line sections of existing line networks

Method used

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  • Feed overload protection device and device used for current monitoring
  • Feed overload protection device and device used for current monitoring

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0024] In FIG. 1 , according to the prior art, a device is schematically shown for monitoring when feeding in electrical power to an existing electrical network 1 already present in a building. current. The consumer network 1 has an overcurrent protection device 2 for protecting the consumer network 1 against electrical overload. Via the overcurrent protection device 2 , the consumer network 1 is electrically conductively connected to an energy distribution network 30 . Furthermore, the consumer network 1 has a first consumer branch 6 - 1 and a second consumer branch 6 - 2 electrically connected in parallel thereto. The first electrical consumer branch 6 - 1 and the second electrical consumer branch 6 - 2 each have an electrical plug connection in the form of a socket 7 - 1 or 7 - 2 . The electric load 8-1 or 8-2 is connected with the socket 7-1 or 7-2 respectively. In the running state, the current I 2 Flows to the electrical load 8-1 of the first power-consuming branch 6...

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Abstract

The present invention relates to a feed overload protection device and a device used for current monitoring. The feed overload protection device (10) of the present invention used for connecting a feed device (20) to a customer network (1) comprises a first connecting point (13) which can be in conduction connection with an over-current protection device (2) through a first connecting line (3), and a second connecting point (14) which can be in conduction connection with the feed device (20) through a second connecting line (4). In addition, the feed overload protection device (10) also comprises a third connecting point (15) which can be in conduction connection with at least one power consumption branch (6) of the customer network (1) through a third connecting line (5), and a first current detection device (11) used for determining the size of a current in the third connecting line (5) and reducing a current in the second connecting line (4) when the determined current exceeds a predefined threshold value. By adopting the above way, effective line protection for all line sections of the customer network (1) can be realized.

Description

technical field [0001] The invention relates to a feeder overload protection device and a device for current monitoring to protect a line section of an electrical consumer network against thermal overload. Due to the increasing use of small, decentralized energy generating devices such as personal photovoltaics, fuel cells or small devices for force-thermal coupling, there is an increasing need to generate The current is fed directly into the existing electrical installation network (for example the existing line network of a single-family or multi-family house) and is forwarded, if necessary, to a local energy distribution network. Background technique [0002] For this purpose, fault current protection devices in structural units with sockets are known from the prior art, which can additionally also be equipped with overcurrent protection. With such a fault current protection device, electrical consumers connected to the socket in question can be protected against thermal...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02H7/26G01R19/165
CPCH02H7/26G01R19/165H02H9/02
Inventor M.克莱迈尔
Owner SIEMENS AG
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