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|  DSH 426
5 C q, Y. l, r. H) j
: O% \" Q, e3 f% `' F1 K | Triple insulated windings9 b' o7 d' _ f) I8 I3 ^
| 57.9, 57.9.4+ U5 A3 R+ s1 D' ]' o; q0 S k
| 60601-1(ed.2);am1;am2 i$ y( U) j" L$ r# l
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Standard(s)- (year and edition):
! {9 x9 v6 g8 G; X2 T, UIEC 60601-1:1988 Ed.2 Am1+Am2
. _0 j, R& ^# ^% N' qSub clause(s): 57.9 57.9.4: D$ b/ ]4 J) y6 ^. G
Sheet n°: DSH-426
3 A" z. l. r# C" |Subject: Triple insulated windings
6 u* g* g% p- K5 aKey words: Triple, insulated, winding, transformer) e% y! X/ ?; Y' u3 e7 e
Confirmed by CTL at its 39th meeting, in Cologne7 U% E2 p. B* C) Q. _
Question:
, I/ X0 I6 Y3 {$ ]Many manufacturers are using a triple insulated winding wire on a transformer, where6 u: Q. b6 p: S0 X' N. l
DOUBLE, or REINFORCED INSULATION is required between the primary and the secondary
- @. ~. w: h1 K3 Pwindings. Is this permitted?& ^ M) U. Q9 m& S K
Decision:
. D8 r7 s4 J6 PThis is allowed, but precautions should be taken concerning possible mechanical damages to# @2 n. M( ]8 G- B9 e4 y* P
the wires. Other requirements of 57.9 shall be applied.
& T6 M( H6 j$ n7 H u5 l4 `% @( L8 X, O% R
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