This standard applies to fixed capacitors for radio interference suppression intended for appa-ratus and machines to be connected to a supply with a nominal voltage not exceeding 500 V d.c. or a.c. (r.m.s.) between conductors or 250 V d.c. or a.c. (r.m.s.) between any one conductor and earth and a frequency not exceeding 100 Hz. Capacitors for special environmental conditions (e.g. drip-proof, splash-proof etc.) have to fulfil additional requirements.
Combinations of two or more capacitors within one enclosure are also included in the scope of this standard.
This standard does not necessarily apply in its entirety to capacitor/resistor combinations, or to capacitors intended for use on motor vehicles, in aircraft or for marine applications. Individual recommendations for capacitor/resistor combinations, and capacitors for these other applications will indicate non-applicable clauses and extra requirements.
Notes 1. — For certain applications, U or Y capacitors, as described in this specification, may have to fulfil additional requirements as specified in IEC Publication 65: Safety Requirements for Mains Operated Electronic and Related Apparatus for Household and Similar General Use, Sub-clause 14.2.
2. — For notes on the application of radio interference suppression capacitors see Appendix D (under considera-tion).