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5 G) E1 G& {8 i7 f( i/ [
! u2 m/ A) S7 }4 E; S7 L3 z | Temperature Tests f' ]; e, g; w
| 9.20 F' u4 O* V3 h
| 61010-1(ed.1);am1;am2+ r A2 A+ n4 p1 T# x
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/ R; m8 m: x7 h* F
( U! _; ]7 x2 V: R' m/ s; }Standard:6 \% ~ Z1 j i, O s& I6 E. c# O
IEC 61010-1:1990 +A1:1992 + A2
& m! p7 d- d5 f3 w( T+ v+ D:1995
* o e5 ]! q# z6 ?: a4 b- o; tSub clause:
; e! B: c, G+ j3 k. w3 y8 v- Q) D9.25 y! Z, H& ]2 ^1 d1 b0 y( H- [
Sheet n. 335+ q% v# I& [/ E4 Z# L2 i' V
Page 1(1)2 K S: L$ |5 i, X/ Y x
Subject:
; L% c- I; I& M0 ]7 R2 @# m( p0 M& _9 JTemperature tests6 G: N+ d: U$ l. G2 s
Key words:
& D# m! |" ~: V; CSteady state
/ n7 B. O- ]- t1 l* {Decision n. 23 taken at
* J% Z. E9 S5 U37th meeting/2000
1 ?2 o; `7 Z2 [Question:" K% S1 G& i! s
In sub-clause, in 1st paragraph, what is meant by “steady state”?3 o$ k- @; y. i
Should this term be defined?1 h, j5 ?" ]0 x9 ?( Z
Decision:, R+ M4 \/ O: r8 J6 l( k, _: ]
Steady state is not defined in IEC61010-1. It has been agreed that where the
F" T( e0 \, s4 x% ttemperature rise is not greater than 2°C in 1 hour then it is reasonable to conclude that; K1 g0 u/ u2 O6 ]3 n' C3 }
steady state has been achieved. This limit is used in other safety standards for example
) v- E3 ~' f. c1 o1 r) tIEC60601-1.
+ S4 K H( j$ R. s" `9 c# }/ c' d" SExplanatory Notes:7 v% z3 M5 E' ?8 Q
A part is regarded as having reached steady state temperature when the temperature rise over! q! N" e. W8 h% J! r# L( w8 G% o
a
- x$ ?$ A7 F7 ^4 H I8 Tlong period is almost negligible. The 2°C rise in 1 hour is considered a reasonable limit
$ C( M! u6 G) L7 s% B$ ?* A" xfor this purpose.9 m8 l N& \: h( q" A0 G
3 Z5 `; a+ \& M( X9 x
* @5 q# h3 C# E! w2 m/ r3 H
6 D0 I: Z2 H: z/ H2 d
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