" }* U7 C8 ]0 z, w! O0 W19.15 Transformers provided with pins intended to be introduced into fixed socket-outlets7 a* G" |& A) `
shall not impose undue strain on these socket-outlets.; S4 z, @% {8 W |
Compliance is checked by inserting the transformer, as in normal use, into a fixed socketoutlet7 Q* X! ]& z9 {
complying with IEC 60083, the socket-outlet being pivoted about the horizontal axis0 T3 h1 g7 ^2 L8 h9 n
through the central lines of the contact tubes at a distance of 8 mm behind the engagement! y) _3 I. z' }. n
face of the socket-outlet. 0 q& g! _/ y1 m4 R" m0 n" @The additional torque which has to be applied to the socket-outlet to maintain the engagement. ~3 d0 T2 u' t
face in the vertical plane shall not exceed 0,25 Nm.