Normativa ISO UNE gratis

Fecha de publicación: 01/01/1980 Electrical relays – Part 12: Directional relays and power relays with two input energizing quantities IEC 60255-12:1980

Fecha de publicación: 01/01/1980 Electrical relays – Part 13: Biased (percentage) differential relays IEC 60255-13:1980

Fecha de publicación: 01/01/1980 Methods of measurement for radio equipment used in satellite earth stations. Part 3: Methods of measurement on combinations of sub-systems. Section Two: Measurement of the figure of merit (G/T) of the receiving system in the 4 GHz to 6 GHz range IEC 60510-3-2:1980

Fecha de publicación: 01/01/1980 Methods of measurement for radio equipment used in satellite earth stations. Part 1: Measurements common to sub-systems and combinations of sub-systems. First supplement: Sub-clause 6.2: D.C. source conditions IEC 60510-1A:1980

Fecha de publicación: 01/01/1980 Methods of measurement for radio equipment used in satellite earth stations. Part 1: Measurements common to sub-systems and combinations of sub-systems. Section Three: Measurements in the i.f. range IEC 60510-1-3:1980

Fecha de publicación: 01/01/1980 Sixth supplement – Lamp caps and holders together with gauges for the control of interchangeability and safety – Part 2: Lampholders IEC 60061-2F:1980

Fecha de publicación: 01/01/1980 Type B helical video recorders IEC 60602:1980

Fecha de publicación: 01/01/1980 Eighth supplement – Lamp caps and holders together with gauges for the control of interchangeability and safety. Part 3: Gauges IEC 60061-3H:1980

Fecha de publicación: 01/01/1980 Tests on oil-filled and gas-pressure cables and their accessories – Part 4: Oil-impregnated paper-insulated high pressure oil-filled pipe-type cables and accessories for alternating voltages up to and including 400 kV IEC 60141-4:1980

Fecha de publicación: 01/01/1980 Specification for cellulosic papers for electrical purposes. Part 3: Specifications for individual materials. Sheet 3: Crêpe paper IEC 60554-3-3:1980