DSH 738 Insulation properties of housing of subclass Y capacitors

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DSH 738 % u) @/ W% m2 O( H, u& F 0 l- Z) N1 g3 U

Insulation properties of housing of subclass Y capacitors

1.5.7.2 (IEC 60950- 1:2001) 1.5.6 (IEC 60950-1:2006)

60950-1(ed.1) & 60950-1(ed.2) 6 ]8 z4 w) |6 W7 Q2 Q5 `# ?

Standard(s):
' U  j, H* [. I6 B( {IEC 60950-1:2001
/ a( J& o7 O2 B' i0 ?" Y/ r+ TIEC 60950-1:2005
% K2 Q+ t8 k) d) xSub clause(s):
- R5 v" ^' m. Q' M$ N$ s) p3 N6 R& ^1.5.7.2 (IEC 60950-
. R0 ^; O+ z) F8 q# x: Q( K2 X0 l1:2001)
1.5.6 (IEC 60950-1:2006)
- p4 c# U7 M9 v/ e. i. e: lDeveloped by ETF 2
Question 68
& g2 U( P4 I' ~& a; J5 zSubject:
Insulation properties of housing
9 I5 T: k% C* T# Oof subclass Y capacitors
. V( @" V& m% x: z0 DKey words:
- subclass Y capacitor
1 ]9 b( [/ J4 H' v) \+ g- housing
- insulation
7 N# T' t. r3 G- b* A( @& F2 ?Decision approved
" P/ m8 J% q0 L: u( ~2 G% f; H8 ~at the 46th CTL
Plenary Meeting
2009
# X! T& W5 k( t! ^8 wQuestion:
# A+ l, x" o+ P' j4 ECapacitors complying with IEC 60384-14 are permitted to bridge certain levels of
* x; ^6 i3 V- p! G( G0 Y' U  K( l) Uinsulation. Does the housing of such capacitors provide this same level of
$ g6 ~1 D! C  l$ s, minsulation?
6 q# u( m. I3 S8 UExample: A subclass Y1 capacitor is permitted to bridge double or reinforced
1 x' _$ p! q4 g6 ?, iinsulation. Is it permitted that this capacitor housing serves as double or reinforced
insulation to other circuit parts, such as a transformer core?
Decision:
Housings of IEC 60384-14 subclass Y capacitors are considered to provide
insulation levels as specified in IEC 60950-1 (e.g. Table 1D for 2nd ed.) with the
exception of the areas near to the leads.
) B  {3 j. i# t# `" U% f6 ~
1 j0 T2 ^: X1 s. F
' I& ^+ A0 j. ]# U