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标题: DSH 537 PCB layer transformers [打印本页]
作者: 小米    时间: 2012-9-19 15:45
标题: DSH 537 PCB layer transformers
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DSH 537
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PCB layer transformers  p6 h8 B9 D6 u( v
General' T, p, E3 r8 ^3 f# z! y; _
60601-1(ed.2);am1;am2
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4 I+ D% i; l5 h* S& P7 nStandard(s)- (year and edition):
; a- l& M* ]  ]: C/ Y8 uIEC 60601-1:1988 Ed.2
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Sub clause(s):
8 T4 _. T2 t/ ?# H$ GGeneral1 a* B& U  P& B" }+ s9 K2 b
Sheet n°: 537+ b: c2 D+ ~4 V
Subject:
4 b9 k8 Q; B1 v8 k2 }PCB layer transformers,
- d, T- y2 n! sKey words:6 Y* s3 B# J( E. z$ s- I0 @
PCB layer transformers
0 \/ p: p1 A3 M: e* a# ~Decision taken at the 40th
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What requirements are needed for PCB layer transformers using etched windings?
: W: R7 q' v4 eDecision:
9 C0 M; }2 s$ L* |' U3 ^The requirements of the IEC 60601:1988 Ed.2 should be used with regard to creepage distances and' o' L5 n% }0 l) I" q9 G2 ^
isolation distances through thickness.
/ q$ k+ J8 g. i8 oExplanatory notes:# w: v* T7 J1 _1 u% I0 Q/ _3 B) T9 u
This issue will be put forward to TC 66 and TC62 to deal with this specific problem. In the meantime a/ ]4 q% m9 d3 X$ P5 b/ D  W* z6 H
temperature cycling test according to IEC 60950 can be used for reference. Base for this test are the
( r! \* L1 n4 E9 Dtemperatures retrieved during normal condition tests calculated/adjusted to an ambient of 40 °C. It is
2 b2 r' c+ D1 r2 @important that the influence of the temperature of other components shall be taken into consideration.
* }9 T( W/ G" H) N6 i# h  PThe minimum thickness through insulation can be taken as from IEC 60950, being 0,4 mm.
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