Remerciez-le!

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

Iec 60840 This is a preview - click here to buy the full publication INTERNATIONAL STANDARD NORME INTERNATIONALE IEC Edition - Power cables with extruded insulation and their accessories for rated voltages above kV Um kV up to kV Um kV ?? Test methods and

This is a preview - click here to buy the full publication INTERNATIONAL STANDARD NORME INTERNATIONALE IEC Edition - Power cables with extruded insulation and their accessories for rated voltages above kV Um kV up to kV Um kV ?? Test methods and requirements C? bles d'énergie à isolation extrudée et leurs accessoires pour des tensions assignées supérieures à kV Um kV et jusqu'à kV Um kV ?? Méthodes et exigences d'essai INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE ICS ISBN - - - - Warning Make sure that you obtained this publication from an authorized distributor Attention Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agréé Registered trademark of the International Electrotechnical Commission Marque déposée de la Commission Electrotechnique Internationale CThis is a preview - click here to buy the full publication ?? ?? CONTENTS IEC ? IEC FOREWORD INTRODUCTION Scope Normative references Terms and de ?nitions De ?nitions of dimensional values thicknesses cross-sections etc De ?nitions concerning tests Other de ?nitions Voltage designations materials and rounding of numbers Rated voltages Cable insulating compounds Cable metal screens sheaths Cable oversheathing compounds Rounding of numbers Precautions against water penetration in cables Cable characteristics Accessories characteristics Gas immersed cable terminations Composite insulators for outdoor cable terminations Accessory characteristics to be declared Test conditions Ambient temperature High voltage tests Waveform of lightning impulse test voltages Relationship of test voltages to rated voltages Determination of the cable conductor temperature Routine tests on cables and accessories General Partial discharge test Voltage test Electrical test on oversheath of the cable Sample tests on cables General Frequency of tests Repetition of tests Conductor examination Measurement of electrical resistance of conductor and metal screen Measurement of thickness of cable insulation and oversheath General Requirements for the insulation Requirements for the cable oversheath Measurement of thickness of metal sheath General Lead or lead alloy sheath Copper or aluminium sheath CThis is a preview - click here to buy the full publication IEC ? IEC ?? ?? Metal tape for CD design Measurement of diameters Hot set test for XLPE EPR and HEPR insulations Procedure Requirements Measurement of capacitance Measurement of density of HDPE insulation Procedure Requirements Lightning impulse voltage test Water penetration test Additional tests on components of cables with a longitudinally applied metal tape or foil bonded to the oversheath Sample tests on accessories Tests on components of accessory Tests on complete accessory Type tests on cable systems General Range of type approval Summary of type tests Electrical type tests on cable systems Test voltage values Tests and sequence of tests Bending test Partial discharge tests Tan ? measurement Heating cycle voltage test Lightning impulse voltage test followed by a power frequency voltage test Examination Resistivity of semi-conducting screens Non-electrical type tests on cable components and on complete cable General Check of cable construction Tests for determining the mechanical properties of insulation before and after ageing Tests for determining the mechanical properties of oversheaths before and after ageing Ageing tests on pieces of complete