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% ?: I3 f: _: S, f3 a | Temperature Tests( y0 m U$ T! @3 `5 K
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/ f& x2 t# j! f0 I | 61010-1(ed.1);am1;am2
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( h( z( k/ K4 y( ]Standard:
9 @& m% h# m4 L( X6 W& S/ z% h3 NIEC 61010-1:1990 +A1:1992 + A24 p5 p( w4 k: `8 Q
:1995
6 V) o% q: s+ e4 Y, |Sub clause:
( c( |. T) B7 T9 [, N9.2
3 N- Z" a8 N/ QSheet n. 335
4 k9 G; `2 Z, Y! @# T9 APage 1(1)9 Y) V R$ b6 |6 e
Subject:3 |3 C- _$ Q3 ^( c8 K/ Q- T% @
Temperature tests
( i" {/ \' g( F' u$ z/ L! c) lKey words:
% d$ p* n, e. k p) NSteady state
4 u7 X6 \; _# qDecision n. 23 taken at
6 H% ?! ^# ~8 G7 g2 d+ R; C/ Y37th meeting/20005 t) e) }1 Z+ w$ v/ }. t6 c. ?7 B
Question:
) C( p9 M2 Y- v" {8 SIn sub-clause, in 1st paragraph, what is meant by “steady state”?2 O( @+ P" A/ [7 `
Should this term be defined?% m7 U! F6 S/ h9 r3 ?
Decision:
7 Z6 }! i4 D9 nSteady state is not defined in IEC61010-1. It has been agreed that where the* K9 \$ d- a A! ^
temperature rise is not greater than 2°C in 1 hour then it is reasonable to conclude that
. Y% r3 g- E5 _, X2 k9 Fsteady state has been achieved. This limit is used in other safety standards for example
# x$ ?0 Q, o) E/ D y5 i4 mIEC60601-1.# x' ~# N; g5 i& |- N6 W- P' L
Explanatory Notes:
$ L8 D0 g% x/ @A part is regarded as having reached steady state temperature when the temperature rise over, _& b1 ]2 O2 {# |# }" m8 T
a+ |3 C( j( D; W( N& k
long period is almost negligible. The 2°C rise in 1 hour is considered a reasonable limit* C$ S1 Q2 s! I9 v3 L0 Q
for this purpose.( q5 q+ R% ^; i" p0 a, b% ] C
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发表于 2012-9-19 13:49
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