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标题: DSH 738 Insulation properties of housing of subclass Y capacitors [打印本页]

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作者: 小米    时间: 2012-11-6 13:42
标题: DSH 738 Insulation properties of housing of subclass Y capacitors

DSH 738 . n- ?) W" O3 L% u4 N' v% r

Insulation properties of housing of subclass Y capacitors : I; O' c0 e# [1 f$ U7 C

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

60950-1(ed.1) & 60950-1(ed.2) 3 T3 K' f9 B$ A! ?& z, q+ J0 e" X

- }* A5 c; K% ?0 d7 WStandard(s):
' ?" }, `2 u( v/ oIEC 60950-1:2001
IEC 60950-1:2005
* h1 s$ q" ~' o  S; hSub clause(s):
1.5.7.2 (IEC 60950-
1:2001)
1.5.6 (IEC 60950-1:2006)
3 J) l6 A9 N  |( S! ADeveloped by ETF 2
Question 68
2 e( d$ U" M1 U' w" V6 d+ xSubject:
Insulation properties of housing
of subclass Y capacitors
6 V' j& ]5 a0 Q" {2 ~1 H" FKey words:
+ |( x7 E+ b6 x% V- subclass Y capacitor
- housing
- insulation
1 Y) Q% q5 D1 f$ e9 O  K- _) {8 iDecision approved
; w( B- _* _0 {8 oat the 46th CTL
Plenary Meeting
2009
Question:
/ N* e0 j: w! w* E7 b8 u  qCapacitors complying with IEC 60384-14 are permitted to bridge certain levels of
insulation. Does the housing of such capacitors provide this same level of
insulation?
* `4 u* D" z* _' kExample: A subclass Y1 capacitor is permitted to bridge double or reinforced
insulation. Is it permitted that this capacitor housing serves as double or reinforced
7 ^" b( z" ~4 w* l7 H2 \; }, Kinsulation to other circuit parts, such as a transformer core?
" `( F' K! ^% Z$ k6 C% N- @) l" hDecision:
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
: `( T: p1 l2 _2 T& ]; y# }" Nexception of the areas near to the leads.

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