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( _: A, s0 l6 w5 g; X' l* B7 B | Temperature Tests+ A2 N& h, `- ]( _
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| 61010-1(ed.1);am1;am2
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Standard:) B3 J: i, u; c( O; S+ T# t: L
IEC 61010-1:1990 +A1:1992 + A2
+ V0 z; M# A8 g:1995: g& _4 F6 }& }
Sub clause:
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# q& Q. u |; W) tSheet n. 335
* h9 W& l! p9 n7 Q* P; mPage 1(1)
9 S/ \& n' l" I- Q" C1 ZSubject:0 }0 D( y) a. `5 J+ M" g! _3 _* d9 {
Temperature tests
4 @0 q% e6 W# T' X1 q# dKey words:
% Y* K6 B5 u9 ]Steady state }7 g! S5 s$ b4 E$ `% S# A* Q
Decision n. 23 taken at3 |+ w$ A1 X$ P T& z$ {, R C
37th meeting/2000% k3 ~. }' X8 v1 P, }' p" }% {- h) T; |
Question:" Z. n! U" t4 u* o* U
In sub-clause, in 1st paragraph, what is meant by “steady state”?( N n3 z" j0 s7 l& R C
Should this term be defined?
# N, v4 U9 u) |" {3 jDecision:
& \2 W$ B) R& sSteady state is not defined in IEC61010-1. It has been agreed that where the
. a/ Q" [' E9 h+ B. e2 I7 otemperature rise is not greater than 2°C in 1 hour then it is reasonable to conclude that& w6 }# n8 J$ U
steady state has been achieved. This limit is used in other safety standards for example
/ {/ M4 J% ?0 [3 w; QIEC60601-1.2 e3 Y8 y* J4 T2 ?- r9 g# }9 f. O: P
Explanatory Notes:
8 d/ D3 v' ?* Q5 }7 `2 kA part is regarded as having reached steady state temperature when the temperature rise over
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long period is almost negligible. The 2°C rise in 1 hour is considered a reasonable limit# }( F0 _' q& r; a0 Q
for this purpose., E+ Q7 J, t7 o" q$ d
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发表于 2012-9-19 13:49
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