DSH 567/06 Sampling plan

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DSH 567/06

Sampling plan

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61048(ed.1);am1;am2 & 61049(ed.1)

Question:
) Y. t' _. q) Y( H0 K+ Z- m5 qIn § 4 of IEC 61048 and in § 3 of IEC 61049 rules for the sampling plan are provided. Beside the main rule, the following additional statement is given:
“The capacitor with the maximum capacitance per unit surface area shall also be tested if this ratio exceeds that of the maximum capacitance value in the range by 10% or greater. Similarly, the capacitor with the minimum capacitance per unit area shall also be tested if this ratio is less than that of the minimum capacitance value in the range by 10% or greater”. Nevertheless, the sampling plan is not well specified when the above case occurs. What is the composition of the final sampling plan for tests?
6 Z1 ?& q2 M) E- |8 NDecision:
For the time being, apply the following proposed solution:
When the above case occurs, each group referred to in § 11 of IEC 61048 or in § 4 of IEC 61049 shall contain as nearly as possible equal numbers of capacitors of the highest capacitance and  of capacitors with capacitance per unit surface area exceeding that of the maximum capacitance value in the range by 10% or greater. Similarly, each of those groups, shall contain as nearly as possible equal numbers of capacitors of the lowest capacitance and of capacitors with capacitance per unit surface area less than that of the minimum capacitance value in the range by 10% or greater.

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