BS EN 60384-13:2012 pdf download – Fixed capacitors for use in electronic equipment Part 1 3: Sectional specification — Fixed polypropylene film dielectric metal foil d.c. capacitors

BS EN 60384-13:2012 pdf download – Fixed capacitors for use in electronic equipment Part 1 3: Sectional specification — Fixed polypropylene film dielectric metal foil d.c. capacitors 3.2 Structurally similar components Capacitors considered as being structurally similar are capacitors produced with similar processes and materials, though they may be of different case sizes and values. 3.3 Certified records of released lots The information required in Clause Q.9 of Annex Q of IEC 60384-1 shall be made available when prescribed in the detail specification and when requested by a purchaser. After the endurance test, the parameters for which information on variables is required are the capacitance change, tan δ and insulation resistance. 3.4 Qualification approval The procedure for qualification approval testing is given in Clause Q.5 of IEC 60384-1 . The schedule to be used for qualification approval testing on the basis of lot-by-lot and periodic tests is given in Clause Q.5 of IEC 60384-1 . The procedure using a fixed sample size schedule is given in 3.4.1 and 3.4.2 below. 3.4.1 Qualification approval on the basis of the fixed sample size procedures The fixed sample size procedure is described in item b) of Q.5.3 of IEC 60384-1 . The sample shall be representative of the range of capacitors for which approval is sought. This may or may not be the complete range covered by the detail specification. The samples shall consist of specimens having the lowest and highest voltages, and, for these voltages, the lowest and highest capacitances. When there are more than four rated voltages, an intermediate voltage shall also be tested. Thus, for the approval of a range, testing is required of either four or six values (capacitance/voltage combinations). When the range consists of less than four values, the number of specimens to be tested shall be that required for four values. Spare specimens are permitted two or three per value which may be used as replacements for specimens which are nonconforming because of incidents not attributable to the manufacturer. The numbers given in Group 0 assume that all groups are applicable. If this is not so, the numbers may be reduced accordingly. When additional groups are introduced into the qualification approval test schedule, the number specimens required for Group 0 shall be increased by a same number as that required for the additional group. Table 1 gives the number of samples to be tested in each group...