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|  DSH 4740 d8 [# g6 Q1 Y }0 J
) o9 V! G' t/ K/ c0 D/ ^) |+ u8 n | General conditions for the tests
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| 60335-1(ed.3); D; J: x2 _6 F; Z. R$ v
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3 j H+ L5 k0 M! \1 jStandard: IEC 60335-1:1991, 3rd Ed.0 y9 {, o. L2 F/ [8 P M
Sub clause: 4.12
, g+ L6 P6 x0 M7 JSheet No. DSH-474
8 {. G8 R5 w) s' G9 v7 ?Subject: General conditions for the tests- p. I C: [! O
Key words: - supply voltage
' {3 q; @2 b! ^8 p7 yDecision taken at the 40th CTL meeting 2003
- g6 d5 T8 F; H" ^5 ~$ y( _Question:8 L' m/ P r1 D' C
In the case of heating elements without appreciable positive temperature coefficient of( i8 W8 W1 q1 L% S; X8 {1 Z& I
resistance, should the supply voltage be adjusted during performance of the test?
1 E, h$ J6 w: y' pRationale:
6 I% t$ @- S$ [* z- YSee question.6 Q% U/ @7 p) ?( R( o) h/ {2 [
Decision:1 b0 [& K4 v3 C! P3 H; `( W
The voltage shall be continuously adjusted to obtain the intended input.
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发表于 2012-9-12 12:46
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