標準號：IS 3723 Pt.1-1978
發布日期：1980/4/1 12:00:00
實施日期：1999/12/31 12:00:00
適用范圍：1.1 This standard (Part I) covers capacitors for radio interference suppres-sion, intended for apparatus and machines to be connected to supply mains of nominal voltage not exceeding 500 V dc or ac (rms) between conductors or 250 V do or ac (rms) between any one conductor and earth and a fre-quency not exceeding 100 Hz, and in such apparatus and machines where the capacitors may be directly connected with the supply mains.1.2 This standard is applicable to capacitors used for interference suppres-sion purposes, irrespective of the type of dielectric employed in the capacitor itself.1.3 Combinations of two or more capacitors within one enclosure are also covered by this standard.1.4 The capacitors of Class U (for 120 V mains operation) are not included in this standard since the nominal system voltage in India is 240 V.