Device and method for signaling electric fault, unit and switch panel comprising the device

A technology for electrical faults and fault currents, applied in electrical components, measuring electricity, circuit devices, etc., to solve problems such as incompatibility of processing channels

Active Publication Date: 2010-12-29
SCHNEIDER ELECTRIC IND SAS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Beforehand, these functions have very different characteristics and are incompatible in the processing channel

Method used

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  • Device and method for signaling electric fault, unit and switch panel comprising the device
  • Device and method for signaling electric fault, unit and switch panel comprising the device
  • Device and method for signaling electric fault, unit and switch panel comprising the device

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Embodiment Construction

[0052]An apparatus for signaling an electrical fault according to a preferred embodiment is shown in block diagram at image 3 middle. This device contains a current measuring sensor 10 which measures differential or residual leakage currents. The sensor 10 is generally formed by a transformer in the form of a ring arranged around the conductive wire 2 and a secondary winding 15 in order to provide a signal Id1 representative of the differential current Id to the processing circuit 20 .

[0053] The processing circuit 20 comprises a signal processing module 21 which conditions the secondary current signal Id1 into a signal Id2 which can be processed by an analog or digital circuit. Module 22 may contain nominal or threshold adjustment functions. The processing circuit 20 also includes a global processing circuit 22 for receiving a signal Id2 representative of the differential current and providing a first fault detection signal Fd1 when the measured current exceeds a predete...

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Abstract

An electric fault signaling device comprises a difference current sensor, a processing member (16) comprising a fault current detection member (21), and an electric fault signaling member (17, 18). The processing member comprises a member (29) for detecting voltage of a control input end (30). When a first detection signal (Fd1) represents threshold overshoot, and when the voltage detection member (29) detects that voltage supply at the control input end is stopped, a signal processing member (22) provides a first signal processing signal (IS1) to signal members (23, 24, 25). The method comprises signaling (58) positioned electric fault when detecting overshoot (55) of a first threshold and detecting that the voltage supply is stopped.

Description

technical field [0001] The invention relates to a device for signaling electrical faults, said device comprising: [0002] - current measuring components for measuring leakage, differential or residual current; [0003] - processing means comprising fault current detection means connected to said current measuring means and providing a first fault detection signal when the measured current exceeds a predetermined first threshold; and [0004] - means for signaling electrical faults connected to said processing means. [0005] The invention also relates to a differential protection unit comprising electric switchgear means capable of opening the main contacts in the event of an electrical fault. [0006] An electric distribution panel consisting of an electric power supply line incomer and several electric distribution feeders. [0007] The invention also relates to a method for signaling an electrical fault. Background technique [0008] figure 1 An example of a diagram...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02H3/26H02H3/253
CPCH02H3/33H02H3/042G01R31/025G01R31/52
Inventor 西蒙·蒂安克莱门特·泽勒杰尔姆·穆尼尔-卡鲁斯
Owner SCHNEIDER ELECTRIC IND SAS
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