60950-1 4.3.6章节和61558中19.15章节 扭矩测试

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60950-1 4.3.6章节和61558中19.15章节 扭矩测试 为什么不能超过0.25Nm？？
2 p8 I, L; I2 s+ A) Z6 O9 J怎么理解这个8mm的？？
; m( r7 ^" W$ F6 z2 \
19.15 Transformers provided with pins intended to be introduced into fixed socket-outlets
shall not impose undue strain on these socket-outlets.
) V, _- _0 X+ Z' ?& a4 ?Compliance is checked by inserting the transformer, as in normal use, into a fixed socketoutlet
5 h3 F( [8 N" Y, {complying with IEC 60083, the socket-outlet being pivoted about the horizontal axis
through the central lines of the contact tubes at a distance of 8 mm behind the engagement
face of the socket-outlet.
4 X- H4 Q2 O3 a0 ]- tThe additional torque which has to be applied to the socket-outlet to maintain the engagement
0 i% I# b9 J! d/ @, Jface in the vertical plane shall not exceed 0,25 Nm.