ISO 1547:1975

Includes the requirements for these components for use in aircraft electrical systems having voltage and frequency characteristics conforming to ISO/R 222, at any ambient temperature from -65 to + 85 °C, and all altitudes from 0 to 24 000 m. Gives terminology, requirements for dimensions, temperature and altitude rating, current, voltage and breaking-capacity ratings, environment, temperature rise, time/current characteristics, endurance, identification and marking, tests, type tests, production routine test, production quality tests and a method of measurement of voltage drop.