Body closure

Schematic representation of a short to body between L3 and housing on a three-phase motor . If the person touches the housing, he becomes an earth fault.

A short circuit to the body is a conductive connection between the body and active parts of electrical equipment that is created by a fault .

A body, short or earth fault is:

completely (directly): if there is no fault resistance in the circuit
imperfect (indirect): if there is a fault resistance in the circuit (e.g. wet branch, internal arc )

The cause can be installation errors or defects such as broken cables .

When touched by the body end under tension set plant parts there is a risk of an electric shock . So-called protective conductors and residual current circuit breakers are used as countermeasures in electrical engineering .

literature

Alfred Hösl, Roland Ayx, Hans Werner Busch: The electrical installation in accordance with regulations, residential construction, commercial industry. 18th edition, Hüthig Verlag, Heidelberg, 2003, ISBN 3-7785-2909-9 .
Hans-Günter Boy, Uwe Dunkhase: Electrical installation technology The master's examination . 12th edition, Vogel Buchverlag, Oldenburg and Würzburg, 2007, ISBN 978-3-8343-3079-6 .

swell

↑ Definition of body according to the International Electrotechnical Dictionary - IEV 195-06-10 : conductive part of electrical equipment that can be touched and is usually not live, but can become live if the basic insulation fails.
↑ Gerhard Kiefer, Herbert Schmolke: VDE 0100 and the practice, guide for beginners and professionals . 14th edition. VDE Verlag GmbH, Berlin and Offenbach 2011, ISBN 978-3-8007-3190-9 , p. 103 .

[1] Definition of body according to the International Electrotechnical Dictionary - IEV 195-06-10 : conductive part of electrical equipment that can be touched and is usually not live, but can become live if the basic insulation fails.

[2] Gerhard Kiefer, Herbert Schmolke: VDE 0100 and the practice, guide for beginners and professionals . 14th edition. VDE Verlag GmbH, Berlin and Offenbach 2011, ISBN 978-3-8007-3190-9 , p. 103 .