13:09 Feb 17, 2007 |
German to English translations [PRO] Tech/Engineering - Electronics / Elect Eng | |||||||
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| Selected response from: Rita Rumpf Local time: 12:09 | ||||||
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Summary of answers provided | ||||
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4 | protection earthing |
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4 | equipment earthing |
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protection earthing Explanation: 3.2 Formen der Erdverbindung in Netzen kleiner 1kV (T300 DIN VDE) 1. Erdung der Quelle – Betriebserde RB (auch als Funktionserde bezeichnet) – T: Terra – direkte Erdung durch Verbindung durch niederohmiger Leiter – I: Isoliert – es existiert keine Erdung – 2. Erdung der Anlage – Anlagenerde RA ( auch als Schutzerdung bezeichnet) – T: Terra – direkte Erdung durch Verbindung durch niederohmiger Leiter – N: geerdet über Betriebserde z.B. über die Erde eines Trafos die schon vorhanden ist – konkretisiert durch C oder S 3. Combinatet (C) – N und PE sind untereinander verbunden – 4. Separatet (S) – N und PE sind getrennt verlegt |
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equipment earthing Explanation: Earthing can classified in two ways: * System earthing; * Equipment earthing. System earthing is essential to the proper operation of the system, whereas equipment earthing concerns the safety of personnel and plant. A key function of equipment earthing is to provide a controlled method to prevent the build up of static electricity, thus reducing the risk of electrical discharge in potentially hazardous environments. Generally, a resistance to earth of less than 106 W will ensure safe dissipation of static electricity in all situations. http://www.hse.gov.uk/comah/sragtech/techmeasearthing.htm |
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