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|  DSH 456
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" o& `6 V2 d, u2 Q | Insulating resistance and electric strength9 M5 T7 ]* n& A& E" p
| 16.49 {, O2 y; {. D8 M( _' G
| 60335-1(ed.2)
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Standard: IEC 60335-1:1976, 2nd Ed.
2 h* [/ j- Q+ y8 ^# USub clause: 16.4
9 z: L1 l0 l" ^" H7 l% LSheet No. DSH-456
2 W" c7 G: C( y) V, A) r! V% ISubject: Insulating resistance and electric strength
! S/ [& T: z* w9 B$ FKey words: - use of metal rod - use of metal foils+ d: F3 P2 B8 g( M+ c$ G* p' R
Decision taken at the 40th CTL meeting 2003. X: `! i4 G" C* M" T H$ F3 d/ C
Question:
O7 P1 ~% g1 n: ?; a6 dDuring the electric strength test on cord guards and cord anchorages, should a metal rod or; T6 h4 a$ W# p% h& |! U
metal foil wrapped around the cable be used ?/ e# I9 \$ K( b
Rationale:
# { G0 a% R# e, C% x8 }5 nSee question.
# _1 z1 o: V- v4 p. [7 sDecision:$ ~- b( I- I1 b, M
In case of doubt, the cable with the foil wrap is used for cord anchorages and a metal rod for
% f+ |/ I; n9 e$ q7 I, b! |% }' J3 P+ lthe inlet bushings.
* ?- K; h8 f/ f ^* l% zThe torque for the screw and clamping means should be 2/3 of what is stated in the table of
( m3 O& i0 [1 z% b4 O# [9 K3 dclause 28.
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发表于 2012-9-12 14:53
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