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|  DSH 431
) X& |1 c, {9 C3 o
, T& m3 C# w- Z1 D | Flexible shafts
, Z! f8 b. {2 h- F# m | 17, 17c)8 g$ Z: Y" ~5 T9 G: M
| 60601-1(ed.2);am1;am2- H* h4 ]% B1 H. w1 w X
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( m- j0 p5 U1 ~/ \2 U5 W, V; OStandard(s)- (year and edition):6 n4 T7 P4 @* l# b- t i% V' F2 R
IEC 60601-1:1988 Ed.2 Am1+Am2) I2 h! {9 D( ?8 s/ o
Sub clause(s): 17, 17c)
: l- t( y# {3 \& W7 L# {Sheet n°: DSH-431. L0 y- O% E, S
Subject: Flexible shafts3 R' H% R5 i( O ^# j i. ]
Key words: Shaft, accessible, applied part6 R% t" [% x' ]% V! W& ?! F
Confirmed by CTL at its 39th meeting, in Cologne
+ F0 ~2 k% e$ f' K& GQuestion:
* n; ~- v& \6 I. JHand held flexible shafts driven APPLIED PARTS may have parts of the flexible shaft which
8 f6 ~) L! J/ Y' h9 kare accessible and not connected to PROTECTIVE EARTH.* X* e/ W8 T) B9 b
This particularly applies to the termination of the flexible shaft which is normally of metal for! y: F% p+ C6 s% ^. ]. X& l1 w
durability and strength.2 b8 l* M% V, d1 j+ f' j
Decision:
' ^+ D" w0 W' G J% I) K3 \Hand-held flexible shafts driving an APPLIED PART, e.g. Surgical or Dental drill, may be, {' T2 H$ ` m) I3 q4 ?
considered part of the APPLIED PART and therefore the requirements of Sub-clause 17c) will
! E& x. s$ B( Z& W$ q. u, wnot apply to the ACCESSIBLE PARTS of that flexible shaft. 17d) shall apply
+ Z7 k! [* t0 U0 t2 y2 ~0 W9 K* X& p5 t/ r
( J. e1 w* E+ _* J: a$ |, E b |
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