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|  DSH 433( Q+ j( k% g! }1 _% }/ e$ ?9 T
( V0 W0 t) n+ ~$ T. T/ z, F4 H1 |
| Components between primary and secondary4 @1 r+ N( n( e
| 57.6 Z. f( Q2 C1 ?8 u+ C4 Z
| 60601-1(ed.2);am1;am2. U5 I" ^4 R/ g, m( \! }# U9 Z
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* `2 X, }. ]8 w" |9 [& oStandard(s)- (year and edition):* O" I/ h; V5 S
IEC 60601-1:1988 Am1+Am22 Y6 h1 h* k5 D& h+ c8 m; ~% E5 u
Sub clause(s): 57.6
% @$ `% g1 y8 T9 Y6 |) r% WSheet n°: DSH-433
: r2 \7 p' b: [$ a& B, J9 x3 hSubject: Components between primary and secondary
! \. h& ` a$ {0 ~Key words: Reinforced, insulation, bridging ! R2 h2 ?! N0 i
Confirmed by CTL at its 39th meeting, in Cologne" o8 u H: u: g
Question:* d& r! C- ^# o
DOUBLE INSULATION and REINFORCED INSULATION are defined in subclasses 2.3.4 and 2.3.7.. A' }; H6 s( c3 ?# ?) T
Relevant requirements are in sub-clause 20 (Dielectric strength) and sub-clause 57.10 (CREEPAGE
, j- k) D @) IDISTANCES and AIR CLEARANCES). Sometimes it is necessary to bridge the insulation by
O* h. L i1 m6 _components (e.g. opto-couplers, capacitors). What are the requirements for these components?: v) N: q9 w/ V" S. W# |
Decision:
; j! c2 _$ N9 lCapacitors according to IEC 60384-14 type Y1 can be used to bridge DOUBLE or REINFORCED
7 g- l x8 P3 G3 Q2 cINSULATION.7 q! w, m7 d+ h* Y! P3 m' u) H
Step by step a list with references to standards for components with requirements concerning reliability
; ~; u+ o2 |4 a; M, kshall be established.
8 `5 G0 q0 r( V* h4 ~# c( ^! p) X/ {, _* N' _
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发表于 2012-11-5 10:19
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