DSH 738 Insulation properties of housing of subclass Y capacitors

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DSH 738 6 T  l0 i) ^1 M( p- g- ]" `/ U

Insulation properties of housing of subclass Y capacitors

1.5.7.2 (IEC 60950- 1:2001) 1.5.6 (IEC 60950-1:2006)   B  g- @. E. e7 q! z% g" j3 D

60950-1(ed.1) & 60950-1(ed.2) 0 D) x7 }- p: A

) z8 t8 k0 e' `# b- iStandard(s):
IEC 60950-1:2001
$ O* J- C& I% X, i6 A6 k. r) PIEC 60950-1:2005
Sub clause(s):
# {: P* w# ^3 u3 {; R1.5.7.2 (IEC 60950-
& k; ?: W9 O. P3 n! l6 s1:2001)
1.5.6 (IEC 60950-1:2006)
1 ^. I- Q/ l$ z$ }* j) i' w+ r. ADeveloped by ETF 2
1 C$ U( F( E! R; x& {Question 68
Subject:
Insulation properties of housing
2 H% P4 ?6 o. D& sof subclass Y capacitors
0 m: b% ]6 J1 F2 bKey words:
- subclass Y capacitor
- housing
- insulation
' h; D! p8 T0 v  lDecision approved
at the 46th CTL
Plenary Meeting
2009
2 s9 Y4 v. B. I+ n4 tQuestion:
( b8 E, H# g+ k/ lCapacitors complying with IEC 60384-14 are permitted to bridge certain levels of
  Z! C: a9 p' [5 {, g: rinsulation. Does the housing of such capacitors provide this same level of
* _# T; S: f* x* T) Zinsulation?
* A8 g$ t0 g$ A1 E; E5 e9 BExample: A subclass Y1 capacitor is permitted to bridge double or reinforced
) P; ~: H- u9 B! i/ v) H8 q% N# yinsulation. Is it permitted that this capacitor housing serves as double or reinforced
insulation to other circuit parts, such as a transformer core?
, B$ u0 f( k, O( d9 vDecision:
# z# N) Q8 @& I- ~; {4 s. JHousings of IEC 60384-14 subclass Y capacitors are considered to provide
! P+ C+ i3 p/ Ninsulation levels as specified in IEC 60950-1 (e.g. Table 1D for 2nd ed.) with the
exception of the areas near to the leads.
5 Q9 {3 F, I7 K4 N: X7 S- _

, ~' L  {- U, g8 m