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4.3.2 Handles and manual controls. A) B% E# |& B* L3 l
Handles, knobs, grips, levers and the like shall be reliably fixed so that they will not work loose. K5 w# G4 S2 s
in normal use, if this might create a hazard. Sealing compounds and the like, other than
+ }5 K) L/ m. R4 J1 F0 L6 ?* ^self-hardening resins, shall not be used to prevent loosening.
) c$ H5 P. k# o, h3 D8 J3 ~6 _If handles, knobs and the like are used to indicate the position of switches or similar4 E& N8 Z+ u" t2 I( O" x
components, it shall not be possible to fix them in a wrong position if this might create a hazard.
' n; F* l& m5 T( h; d) xCompliance is checked by inspection, by manual test and by trying to remove the handle, knob,& ?7 N( N* c' k7 _0 [
grip or lever by applying for 1 min an axial force as follows.
* n8 Y3 C# Q; G) p6 I4 z8 }If the shape of these parts is such that an axial pull is unlikely to be applied in normal use, the' }4 |4 |5 j/ j% q- Q7 h" U
force is:
/ ~, b% d! G1 h1 p– 15 N for the operating means of electrical components; and
% w* @) Y2 B; |– 20 N in other cases." u/ {2 L' K1 ^" W
If the shape is such that an axial pull is likely to be applied, the force is:
6 D5 X/ P) j% [, h% U– 30 N for the operating means of electrical components; and& \& g1 Y; l7 k* `( L
– 50 N in other cases. |
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发表于 2015-4-7 11:29
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