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| DSH 411
# I7 d' E! d5 O$ D: T8 W G! t) o' `! A
| General requirements# X% u* I0 S5 t
| 20.1
# G& T5 h5 H" n" w; ] | 60601-1(ed.2);am1;am28 W8 j) h4 O8 b6 i( d
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* Z }( s3 r* F h# v# k, L/ \Standard(s)- (year and edition):
5 \; E& S: ~+ qIEC 60601-1:1988 Ed.2 Am1+Am2- D2 Q4 j/ L. b# W/ l
Sub clause(s): 20.1
! B4 a- p P- i7 G2 F9 YSheet n°: DSH-411
& v) T* l" l9 a0 ISubject: General requirements
" D3 h: {2 L" D% k! BKey words: Leakage current, SIP/SOP, working voltage, A-k+ i- @) C0 ?: r
Confirmed by CTL at its 39th meeting, in Cologne
$ A5 L: c. Y. }' G& IQuestion:4 p: }6 z# _- ~5 g4 K" u/ r, `6 L5 `
I) Does exemption a) refer to voltages arising within the EQUIPMENT, to voltages appearing) v! l7 Z+ x# |( Q
from external sources, or both?3 @# ]% F6 h2 w: b. F, f6 S3 R4 O
ii) Does exemption b) refer to the SFC of mains voltage on the SIP or SOP? Is insulation which9 M6 Z) n, c, x( y; T2 h$ u
ensures absence of excessive LEAKAGE CURRENTS not to be tested?
3 u Y+ i0 k; |$ w! u- C7 Niii) For exemption d) to apply, does the manufacturer have to restrict connection of the SIP and
: [# ]$ q' j# M. K, h9 ESOP to other MEDICAL ELECTRICAL EQUIPMENT or can connection to non-medical
2 r3 n/ D! l1 z4 s, l: B; n7 Uequipment be permitted, subject to some restrictions?
5 a+ d1 L: b W% H) b0 x- mDecision:# ?/ e- [- s/ V$ a. b8 |4 ]
i) a) applies only if the voltages within the SIP and SOP are less than SELV when connected to
7 H0 ^3 s* Q7 _$ eEQUIPMENT consistent with the instructions for use.
7 ^* A2 x! d$ r6 x( G7 B8 ]( N) _ii) b) applies to a SFC resulting from a single component failure within the SIP or SOP in
' Y! ^1 n0 T ]8 [# ONORMAL USE i.e. connected as specified in the instructions for use. If such a SFC does not
# V* I+ \( F0 _$ pproduce excessive LEAKAGE CURRENTS then no additional insulation test is needed.5 h0 l% W$ j) ^; ?
iii) d) applies only if the manufacturer restricts connection of the SIP or SOP to MEDICAL
' r2 p2 `; G& M8 iELECTRICAL EQUIPMENT6 _( r' w4 A% [
5 F: `8 T" }1 v5 c; @$ E4 g
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