标题: IEC 60884-1 clause 24.3如何理解？ [打印本页] 作者: ljh809809 时间: 2015-10-23 16:37 标题: IEC 60884-1 clause 24.3如何理解？ 24.3 The bases of surface type socket-outlets are first fixed to a cylinder of rigid steel sheet,9 V' A$ y; t: |. |0 b
having a radius equal to 4,5 times the distance between fixing holes but, in any case, no less- R3 H: ?. P2 N7 N( t
then 200 mm. The axes of the holes are in a plane perpendicular to the axis of the cylinder. P* u$ L& C8 J! {* o/ t- W; K
and parallel to the radius through the centre of the distance between the holes.. ]# }/ ~7 }9 v, J1 \# ]/ N
The fixing screws of the base are gradually tightened, the maximum torque applied being Y- O6 b! D, _- N# N8 `' x$ A8 T
0,5 Nm for screws having a thread diameter up to and including 3 mm and 1,2 Nm for screws ) j* y# p7 x7 z/ F9 X& d" k! j- Ohaving a larger thread diameter. / |/ S7 ^# ?6 b; u# Y. ~4 j! YThe bases of socket-outlets are then fixed in a similar manner to a flat steel sheet. ) S1 h$ G7 D) {6 n4 ], Z- [ . q0 a4 \, m" h' C+ n* S问题：这个试验装置是什么样的？ # M& p5 R# ~0 G' y$ r; D! ~% t$ v