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4 Q, J+ t2 w3 A! h- o4 ~ | PCB layer transformers
- h0 f6 v* E7 A& B7 X | General
, A; |" ~1 u+ s# g& ]9 n/ D | 60601-1(ed.2);am1;am2( T+ z6 l5 q% s/ O
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Standard(s)- (year and edition):2 i4 R3 ]5 k6 L8 G
IEC 60601-1:1988 Ed.2$ R2 {0 I2 B L6 u* h
Am1+Am2
8 p4 }- W5 R$ \( O# a8 o: WSub clause(s):
2 a7 {( F) l+ xGeneral
4 J8 p* e2 e6 k. l) E0 P' lSheet n°: 537
$ t J* }3 Q7 h4 ~, WSubject:' x8 ^, d, F4 D) y) w$ u# ~) E0 X
PCB layer transformers,7 V1 X3 ?- v9 X5 D2 g
Key words:
, B* b' c$ P; L( C( o' J1 QPCB layer transformers
! d2 b3 R# V \% z/ l' ~6 m& wDecision taken at the 40th
( D" j p. c' i0 r- ~3 B& Pmeeting 2003
: v# L0 |$ l( P0 N7 N. z$ c; zQuestion:# f. ?: R7 n- n) N+ l
What requirements are needed for PCB layer transformers using etched windings?: _5 z/ W q9 Z
Decision: H) W7 f, z& [9 R0 \. F0 Q3 K5 o
The requirements of the IEC 60601:1988 Ed.2 should be used with regard to creepage distances and
' ~8 J* q* S" x' e0 a2 w: ]isolation distances through thickness.: f" S9 ~9 s$ u' f" ~
Explanatory notes:
1 s# g3 l6 Q) b9 k: hThis issue will be put forward to TC 66 and TC62 to deal with this specific problem. In the meantime a
; l* a1 ?$ {; Jtemperature cycling test according to IEC 60950 can be used for reference. Base for this test are the) @1 }4 r! V" u0 _! T! u+ a
temperatures retrieved during normal condition tests calculated/adjusted to an ambient of 40 °C. It is
2 K7 {0 H! b& @. X) z* ~important that the influence of the temperature of other components shall be taken into consideration.2 {7 X$ X! S8 E: S4 h6 X
The minimum thickness through insulation can be taken as from IEC 60950, being 0,4 mm.# O* T. {5 F1 E1 ~: l
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发表于 2012-9-19 15:45
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