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[MEAS] DSH 537 PCB layer transformers

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发表于 2012-9-19 15:45 | 显示全部楼层 |阅读模式
广东安规检测
有限公司提供:
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DSH 537
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PCB layer transformers
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General
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60601-1(ed.2);am1;am2- F0 g" Y1 P+ u; ]1 f" j/ U( {) s

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* F: o6 v0 f: W* b- k" h% kStandard(s)- (year and edition):  q% d0 N9 z* ^  F5 ~, H
IEC 60601-1:1988 Ed.2
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Sub clause(s):- x0 [8 g( ?6 [& Z
General
! D8 N% X; T7 v5 \# Q3 _Sheet n°: 537: }8 R2 b4 d7 o! V
Subject:
- s9 `( Q) o1 k* c: i6 O# UPCB layer transformers,
0 }" ], f3 M/ u6 y1 a5 jKey words:8 K4 H5 l3 j% Y( B3 ?& q7 B
PCB layer transformers
* s* C9 z5 P/ R% l# I3 m  f3 yDecision taken at the 40th2 D* Y0 H( y) B# ^, E* ]
meeting 2003% c" X! c; v/ o% {
Question:
3 U$ b" c2 z: v0 T/ p3 o7 xWhat requirements are needed for PCB layer transformers using etched windings?% I' w  b4 a$ Y! M1 \
Decision:
1 M9 U* W. i: r) P' v- I$ ~The requirements of the IEC 60601:1988 Ed.2 should be used with regard to creepage distances and
5 ?. w9 y/ `* A) q% l+ z' U8 u+ Aisolation distances through thickness.0 z% _0 ^) U. }" E: q% ]5 ~
Explanatory notes:! e# V/ y6 B/ s. j; m4 K1 c
This issue will be put forward to TC 66 and TC62 to deal with this specific problem. In the meantime a
( v) V; j- V8 C3 i" Etemperature cycling test according to IEC 60950 can be used for reference. Base for this test are the
/ f3 a  t6 R% d& }$ S$ ztemperatures retrieved during normal condition tests calculated/adjusted to an ambient of 40 °C. It is
/ o; B: v8 J& \% jimportant that the influence of the temperature of other components shall be taken into consideration.
  A& e3 G5 \# o& p, dThe minimum thickness through insulation can be taken as from IEC 60950, being 0,4 mm.
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