Applicable to complete filter units for radio interference suppression intended for apparatus and machines to be connected to a supply with a nominal voltage not exceeding 500 V between conductors, or 250 V between any one conductor and earth, and a frequency not exceeding 100 Hz. The combination of two or more filters within one enclosure is also included in the scope of this standard.
WITHDRAWN
IEC 60939-1:1988 ED1
99.60
Withdrawal effective
Feb 10, 2005
WITHDRAWN
IEC 60939-1:2005 ED2