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|  DSH 426" u" a5 y+ ]& [* S' S' @/ N
' ?3 u+ u3 R7 P
| Triple insulated windings
0 \% y6 h3 r% O" A, T/ n! F | 57.9, 57.9.4
) |' N7 q4 n( G, E& h | 60601-1(ed.2);am1;am2
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j9 H2 p) T7 F
Standard(s)- (year and edition):
% Q& g) f, V8 P e$ vIEC 60601-1:1988 Ed.2 Am1+Am2; @$ P! Z/ X" U1 t/ @
Sub clause(s): 57.9 57.9.4
. Y! p1 o: w, o: ESheet n°: DSH-426( h/ P. r) \; r
Subject: Triple insulated windings( ^% f' Q+ Q+ d S( u
Key words: Triple, insulated, winding, transformer# |% v) q! s, ]
Confirmed by CTL at its 39th meeting, in Cologne
2 ?0 S1 L4 Q* F$ oQuestion:
7 S6 q, p9 S: U8 s2 }* tMany manufacturers are using a triple insulated winding wire on a transformer, where% f& o: t9 I2 p# |! t! c# i) w
DOUBLE, or REINFORCED INSULATION is required between the primary and the secondary8 ^( i$ [. x) e% D+ }; d) a
windings. Is this permitted?
3 G3 T9 ]3 B. V1 t) B5 LDecision:1 N: K# I/ J) m% j+ q% I
This is allowed, but precautions should be taken concerning possible mechanical damages to
8 c" W+ O5 M3 X; ~& @) m* Athe wires. Other requirements of 57.9 shall be applied.
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发表于 2012-11-5 10:34
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