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EN 60598-1:
' w7 O# b: O- p* t9 ^+ IThe sample is mounted or supported as in normal use on a rigid wooden board, cable entries% R: i) e5 O# Y- O- i5 g1 C4 z2 W
being left open, knockouts opened, and cover-fixing and similar screws tightened with a torque* e( Z1 O' a4 j1 {
equal to two-thirds of that specified in Table 4.1.
+ S/ n9 q' e" q) D9 SThree blows shall be applied to the point which is likely to be the weakest, paying special
) s: b) n1 N2 nattention to insulating material enclosing live parts and to bushings of insulating material, if
8 [* @+ |( c& L' G# Oany. Additional samples may be necessary to find the weakest point; in case of doubt, the test7 v$ Z# |# a' {& W
shall be repeated on a fresh sample to which three blows only are applied. |
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