DSH 537 PCB layer transformers

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DSH 537 % K  w9 Q. O; p0 S! `0 G

PCB layer transformers # k) Y9 n$ N# A

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60601-1(ed.2);am1;am2

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* F: o6 v0 f: W* b- k" h% kStandard(s)- (year and edition):
IEC 60601-1:1988 Ed.2
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Sub clause(s):
General
! D8 N% X; T7 v5 \# Q3 _Sheet n°: 537
Subject:
- s9 `( Q) o1 k* c: i6 O# UPCB layer transformers,
0 }" ], f3 M/ u6 y1 a5 jKey words:
PCB layer transformers
* s* C9 z5 P/ R% l# I3 m  f3 yDecision taken at the 40th
meeting 2003
Question:
3 U$ b" c2 z: v0 T/ p3 o7 xWhat requirements are needed for PCB layer transformers using etched windings?
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.
Explanatory notes:
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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