IS 7691 : 1975 Frequencies for special power applications

1 Scope

1.1 This standard prescribes standard frequencies required forspecial control applications required for single phase and threephase ac systems for installation in ships, for ac tractionsystems, machine tools, `rayon industry and aircraft. This standardis limited to frequencies up to 10 000 Hz.

1.2 The standard frequencies for centralized controlinstallations are not covered in this standard.