DSH 738 Insulation properties of housing of subclass Y capacitors

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DSH 738 2 n/ e* G  ~% c4 ]% v: Z% S2 a ! y  s8 Y- Y5 `0 E& \4 t

Insulation properties of housing of subclass Y capacitors " J* u* d$ A8 G' x+ t) h8 a

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

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

0 A! J- M4 l' j1 N8 J! ]- @Standard(s):
IEC 60950-1:2001
4 @: J; L. c+ K2 A2 MIEC 60950-1:2005
Sub clause(s):
+ a! E. g( H' ~: e4 Q' V5 S1.5.7.2 (IEC 60950-
1:2001)
1.5.6 (IEC 60950-1:2006)
Developed by ETF 2
Question 68
Subject:
Insulation properties of housing
of subclass Y capacitors
6 Y$ ?! ^! \2 [: B% e: i7 lKey words:
# q0 S# y7 R3 N- K' C- subclass Y capacitor
- housing
+ V6 L' w. l: O5 H2 m- insulation
3 {# O' [' {% o5 R5 e0 q; |" f0 q$ FDecision approved
at the 46th CTL
Plenary Meeting
& X0 r4 s. _, y  g2009
Question:
: d% U0 W; a- [Capacitors complying with IEC 60384-14 are permitted to bridge certain levels of
3 a' C" x+ _( \$ J% N9 Ainsulation. Does the housing of such capacitors provide this same level of
insulation?
/ I; C( G# W& fExample: A subclass Y1 capacitor is permitted to bridge double or reinforced
insulation. Is it permitted that this capacitor housing serves as double or reinforced
: P) c, N$ W5 |3 N0 G' R' ~( k. Qinsulation to other circuit parts, such as a transformer core?
9 z6 w9 `- [  ~0 U$ ~3 s1 g% RDecision:
/ G  B" p* I, g: p$ |6 ~- CHousings 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
' x1 h/ e) U/ k( S+ V& u  jexception of the areas near to the leads.
# U4 R- y/ ~) @) r% U