Remerciez-le!

Remerciez @Admin pour avoir partagé cet document gratuitement, de la manière la plus simple, en partageant sur les réseaux sociaux.

Iec61643 1 2005 vn ap dung cho thiet bi chong set nguon dien ac

This is a preview - click here to buy the full publication INTERNATIONAL STANDARD IEC - Edition - NORME INTERNATIONALE colour inside Low-voltage surge protective devices ?? Part Surge protective devices connected to low-voltage power systems ?? Requirements and test methods Parafoudres basse tension ?? Partie Parafoudres connectés aux systèmes basse tension ?? Exigences et méthodes d'essai INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE ICS Registered trademark of the International Electrotechnical Commission Marque déposée de la Commission Electrotechnique Internationale XD PRICE CODE CODE PRIX ISBN - - - - CThis is a preview - click here to buy the full publication ?? ?? F D - IEC CONTENTS FOREW ORD INTRODUCTION Scope Normative references Terms de ?nitions and abbreviations Terms and de ?nitions Abbreviations Service conditions Frequency Voltage Air pressure and altitude Temperatures Humidity Classi ?cation Number of ports One Two SPD design Voltage switching Voltage limiting Combination Class I II and III tests Location Indoor Outdoor Accessibility Accessible Inaccessible Mounting method Fixed Portable Disconnectors including overcurrent protection Location Protection functions Degree of protection provided by enclosures Temperature and humidity range Normal Extended Power system AC between Hz and Hz AC other than the range of Hz to Hz Multipole SPD SPD failure behaviour open circuit standard type SPD short-circuit short- circuiting type SPD CThis is a preview - click here to buy the full publication F D - IEC ?? ?? Preferred values for SPD Preferred values of impulse discharge current Iimp for class I tests Preferred values of nominal discharge current for class II tests In Preferred values of open-circuit voltage for class III tests Uoc Preferred values of voltage protection level Up Preferred values of r m s maximum continuous operating voltage Uc Requirements General requirements Identi ?cation Marking Electrical requirements Protection against direct contact Residual current IPE Voltage protection level Up Operating duty Disconnectors and status indicators Insulation resistance Dielectric withstand Behaviour under Temporary Overvoltages Mechanical requirements Mounting Screws current carrying parts and connections External connections Air clearances and creepage distances Mechanical strength Environmental and material requirements Protection provided by enclosure IP code Heat resistance Fire resistance Tracking resistance Electromagnetic compatibility Additional requirements for speci ?c SPD designs Two port SPDs and one port SPDs with separate input output terminals Environmental tests for outdoor SPDs SPDs with separate isolated circuits Short-circuiting type SPDs Additional requirements as may be declared by the manufacturer One-port and two-port SPDs Two port SPDs only Type tests General testing procedures Impulse discharge current used for class I additional duty test Current impulse used for class I and class II residual voltage and operating duty tests Voltage impulse used for class I and II sparkover tests Combination wave used for class III tests Indelibility of markings Electrical tests CThis is a preview - click here to buy the full publication ?? ?? F D - IEC Protection against direct contact Residual current IPE Measured limiting voltage Operating duty test Disconnectors and safety performance of overstressed SPDs Insulation resistance Dielectric withstand Behaviour under Temporary