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|  DSH 4749 Y, |' f4 ~! U- Z% z
% k# h7 g: g$ k: b3 K | General conditions for the tests
4 s; }# J! T0 }9 j | 4.12
" y5 e6 ?# \, Z: o; L | 60335-1(ed.3)( r( h5 I$ X2 c2 w3 \
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Standard: IEC 60335-1:1991, 3rd Ed.- m1 R( \6 v- P% K
Sub clause: 4.12) N- M1 q. ~0 d h
Sheet No. DSH-474
, U& D; z4 \- c% {5 pSubject: General conditions for the tests
, S3 u$ `' G0 ?* F' vKey words: - supply voltage
( H1 s$ p- b& Y) q# D+ }& d& MDecision taken at the 40th CTL meeting 2003
4 y' d! T' c, E* Y% [$ \Question:
' j( X. k1 A4 j% ]1 |/ V rIn the case of heating elements without appreciable positive temperature coefficient of
' f: X3 U! d. ?! s0 w5 g: T5 xresistance, should the supply voltage be adjusted during performance of the test?7 {: z4 d2 O7 U* b' Q4 f
Rationale:4 p8 ], C! g V' B6 ]9 h
See question.' R5 H0 g/ q! W1 a' X* C" f4 V
Decision:! u; n% N! F- C. W" M) o& l( v4 Q
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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