Normativa ISO UNE gratis

Fecha de publicación: 21/10/2008 Barrel thread for lampholders with shade holder ring IEC 60399:2004+AMD1:2008 CSV

Fecha de publicación: 29/10/2008 Selection and dimensioning of high-voltage insulators intended for use in polluted conditions – Part 3: Polymer insulators for a.c. systems IEC TS 60815-3:2008

Fecha de publicación: 29/10/2008 Selection and dimensioning of high-voltage insulators intended for use in polluted conditions – Part 1: Definitions, information and general principles IEC TS 60815-1:2008

Fecha de publicación: 05/11/2008 Power transformers – Part 12: Loading guide for dry-type power transformers IEC 60076-12:2008

Fecha de publicación: 05/11/2008 Performance of high-voltage direct current (HVDC) systems with line-commutated converters – Part 2: Faults and switching IEC TR 60919-2:2008

Fecha de publicación: 13/11/2008 Radio-frequency connectors – Part 38: Sectional specification – Radio frequency coaxial connectors model, slide-in (rack and panel applications) – Characteristic impedance 50 Ω (type TMA) – 50 Ω applications IEC 61169-38:2008

Fecha de publicación: 13/11/2008 Magnetic materials – Part 4: Methods of measurement of d.c. magnetic properties of magnetically soft materials IEC 60404-4:1995+AMD1:2000+AMD2:2008 CSV

Fecha de publicación: 13/11/2008 Multicore and symmetrical pair/quad cables for digital communications – Part 3: Work area cable – Sectional specification IEC 61156-3:2008

Fecha de publicación: 13/11/2008 Measurement method of a half-wavelength voltage for Mach-Zehnder optical modulators in wireless communication and broadcasting systems IEC PAS 62593:2008

Fecha de publicación: 13/11/2008 Short-circuit temperature limits of electric cables with rated voltages above 30 kV (Um = 36 kV) IEC 61443:1999+AMD1:2008 CSV