IS 7691 : 2025 Frequencies for Special Power Applications (IEC 60196 : 2009, MOD)

ICS 29.020

ETD 01

Revised Standard from Last Update.

1 SCOPE

1.1 This standard prescribes standard frequencies required for special control applications required for single phase and three phase ac systems for installation in ships, for ac traction systems, machine tools and aircraft. This standard is limited to frequencies up to 10 000 Hz.

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