DSH 738 Insulation properties of housing of subclass Y capacitors

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DSH 738 ) T- ~$ @7 t7 E0 N  E

Insulation properties of housing of subclass Y capacitors & |- L9 {- c* W& N, ?8 _

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

60950-1(ed.1) & 60950-1(ed.2)

Standard(s):
IEC 60950-1:2001
) m. S8 I/ ^/ ~* n9 K3 I1 VIEC 60950-1:2005
, D; d" l" h) J/ uSub clause(s):
1.5.7.2 (IEC 60950-
( Z  V% a- R3 \8 {* ~" \, g1:2001)
1.5.6 (IEC 60950-1:2006)
6 V7 x& e5 ~# |) r: T# GDeveloped by ETF 2
( F# t4 _( V. N1 t6 B2 bQuestion 68
% S6 P3 B& u3 N  U/ oSubject:
Insulation properties of housing
of subclass Y capacitors
Key words:
- subclass Y capacitor
# F8 F5 D9 }' k! T- housing
% c9 L5 ]7 M5 Z1 g- insulation
Decision approved
, K% f# l! S4 N9 oat the 46th CTL
Plenary Meeting
2009
& s$ w4 ^* {6 w5 i; V3 T6 lQuestion:
Capacitors complying with IEC 60384-14 are permitted to bridge certain levels of
0 F+ Z' M: [. K$ Q# _insulation. Does the housing of such capacitors provide this same level of
4 V! U3 N: i5 yinsulation?
6 f# J3 D6 D3 J/ D1 TExample: A subclass Y1 capacitor is permitted to bridge double or reinforced
& v. j  D  Z; s7 B5 \insulation. Is it permitted that this capacitor housing serves as double or reinforced
# p5 o' {; f6 F# ?' ainsulation to other circuit parts, such as a transformer core?
Decision:
Housings of IEC 60384-14 subclass Y capacitors are considered to provide
% k, M/ X2 m4 z8 Ainsulation levels as specified in IEC 60950-1 (e.g. Table 1D for 2nd ed.) with the
exception of the areas near to the leads.


+ s6 [" Q- n' `, }+ K- Q