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|  DSH 426' \8 _1 Z" d/ D' ]! I
5 M! J$ o5 f2 `4 j! ?$ S
| Triple insulated windings( [$ o1 s, d& u3 \% F9 a7 H
| 57.9, 57.9.4
, a3 a& o5 R7 R+ } s8 q | 60601-1(ed.2);am1;am2
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$ P" A1 U/ u1 Z3 I7 JStandard(s)- (year and edition):. E: O* p k! A3 L1 W; c( W
IEC 60601-1:1988 Ed.2 Am1+Am2
1 s; m5 |" A8 Z. ]; K' K4 g( mSub clause(s): 57.9 57.9.49 V( @8 S5 g8 d
Sheet n°: DSH-4265 ?3 F& O! Z7 k+ z
Subject: Triple insulated windings
% j. W, ?6 j+ h$ BKey words: Triple, insulated, winding, transformer
) e1 e9 Y: m" F; Z- E6 bConfirmed by CTL at its 39th meeting, in Cologne
( i- j. \7 m# v- ~4 KQuestion:) `/ @$ l1 ? z8 J7 |, W1 s
Many manufacturers are using a triple insulated winding wire on a transformer, where
' z5 [8 y, P3 U* O/ q( JDOUBLE, or REINFORCED INSULATION is required between the primary and the secondary0 y& @! b7 e+ F( a8 E/ Z$ J. y4 y
windings. Is this permitted?
* M! [7 t- X- v# U! m( FDecision:4 P+ |, H+ e/ ?$ u4 C) p9 P! V
This is allowed, but precautions should be taken concerning possible mechanical damages to
; s; u- k2 L2 K7 a) Othe wires. Other requirements of 57.9 shall be applied.: K2 p7 E0 E, |8 |$ y4 J
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