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|  DSH 426, w* e9 O& V& h4 Z! v0 `
- o* k+ O5 ~0 ]! t; B ^3 n$ l | Triple insulated windings$ G' c$ M- d* u' E& _8 x9 x! X) U
| 57.9, 57.9.4
0 X4 K F5 B- }6 W% m: N | 60601-1(ed.2);am1;am2! s' O* `- A7 h2 I$ |: N& q
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' n0 y9 r) D7 A9 S9 {. B( TStandard(s)- (year and edition):5 @) l( `, ^2 f; e
IEC 60601-1:1988 Ed.2 Am1+Am2
T) }8 u/ o/ S) Q: F, gSub clause(s): 57.9 57.9.4+ ]) @. j8 t8 \
Sheet n°: DSH-4261 K- S3 a6 Q; _6 y K K9 D
Subject: Triple insulated windings
/ G% S" P* Z {2 {* B# L; H) pKey words: Triple, insulated, winding, transformer) ?1 J; P! Z, c: b& v( [! L
Confirmed by CTL at its 39th meeting, in Cologne
, m$ r8 _0 a# Z! p( d# i; tQuestion:
Y& X/ G' y, y- r; {3 _4 Q) _Many manufacturers are using a triple insulated winding wire on a transformer, where) x" H- V- @! p. j
DOUBLE, or REINFORCED INSULATION is required between the primary and the secondary
+ f! l5 l9 d+ P4 Y- Y. z# A8 xwindings. Is this permitted?
, W0 ?2 @4 B6 W3 n; k `Decision:3 k& p9 k# P B0 I$ K
This is allowed, but precautions should be taken concerning possible mechanical damages to F* o! |! }! u
the wires. Other requirements of 57.9 shall be applied.: d/ r' U; A% w j# _( a
" J- M+ f+ ^) Y" l$ Z* A# ]! z6 w) B c: S! |; a: X5 k# }8 k( X
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发表于 2012-11-5 10:34
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