DSH 431 Flexible shafts

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DSH 431 4 T$ Z2 [7 |4 [- I( H- V" P

Flexible shafts / H8 x6 d. _9 c1 R2 W  I

17, 17c) 4 @0 }. M2 _- V

60601-1(ed.2);am1;am2 . {9 H2 S) E3 }; |# C* r6 L, N

8 `  I) A! t9 ~- @) D5 X' X# HStandard(s)- (year and edition):
IEC 60601-1:1988 Ed.2 Am1+Am2
Sub clause(s): 17, 17c)
  O. V! Y* @" T3 jSheet n°: DSH-431
Subject: Flexible shafts
; ?8 Z" z& O- t5 g. j! D: T/ S+ jKey words: Shaft, accessible, applied part
- n; w9 m4 M$ N+ H% FConfirmed by CTL at its 39th meeting, in Cologne
Question:
) S6 d' u1 R/ G; A- e: QHand held flexible shafts driven APPLIED PARTS may have parts of the flexible shaft which
are accessible and not connected to PROTECTIVE EARTH.
4 c# P0 F0 U" l: pThis particularly applies to the termination of the flexible shaft which is normally of metal for
. G1 @6 |1 o( G5 w& xdurability and strength.
Decision:
: X3 |' T8 A& h- @, e- H; v. fHand-held flexible shafts driving an APPLIED PART, e.g. Surgical or Dental drill, may be
: m& p) r  d$ X$ _9 Gconsidered part of the APPLIED PART and therefore the requirements of Sub-clause 17c) will
$ J- f7 d6 d' C3 Y8 O% w# T6 K0 snot apply to the ACCESSIBLE PARTS of that flexible shaft. 17d) shall apply
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