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 DSH 335
0 A& D9 E/ z2 I9 j. ~9 y9 K& Q. v | Temperature Tests6 i& b/ A. _" }* g
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| 61010-1(ed.1);am1;am23 G9 R9 y! x4 M( {9 T, J6 C
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5 B4 \9 U# n7 F3 HStandard:2 E& [! h4 C8 n+ B' X1 w' }0 q* z
IEC 61010-1:1990 +A1:1992 + A2
1 m: Z7 I# b0 R: f0 f! ~+ W:1995
$ D( U/ ]: O) T! ESub clause:4 h8 b* Q5 [3 A# Y
9.29 V @! t# p5 ~, e6 h, k N2 l
Sheet n. 335
3 C4 I, x/ S2 B2 @$ n# CPage 1(1)
$ K5 L, `' k1 u5 m+ h: a& dSubject:
/ P; z, o' z6 S% n7 ITemperature tests1 V2 |: `/ o& M
Key words:
* ?' q' m6 r0 ?6 i# qSteady state
. R" h0 w# a# g9 G& \3 {; Z, z8 r1 UDecision n. 23 taken at9 d' P ^% c. U" f& `7 }
37th meeting/2000
' E$ N6 [3 o. V- PQuestion:
2 D4 g3 r; ~$ e5 a G$ ?5 SIn sub-clause, in 1st paragraph, what is meant by “steady state”?
, A& a; S3 |% G# q( nShould this term be defined?
# P- \3 K1 L# p3 e' Y) J1 i; @/ G, ^Decision:
3 D# s) C! S1 [- `Steady state is not defined in IEC61010-1. It has been agreed that where the1 Q0 z% Q+ c; l4 n1 J" W" c
temperature rise is not greater than 2°C in 1 hour then it is reasonable to conclude that
2 f L, _1 p1 T4 s2 N8 Rsteady state has been achieved. This limit is used in other safety standards for example
" `% W' S7 `' QIEC60601-1.
" H5 k4 Q. j# _9 GExplanatory Notes:: K, g( V0 N' _0 z) s' h# V4 I" X! `
A part is regarded as having reached steady state temperature when the temperature rise over" c! Y# h; ]8 e! [/ F5 d( V
a' N( O& t: t5 p" A- g- h: O1 [
long period is almost negligible. The 2°C rise in 1 hour is considered a reasonable limit" W/ ^% {- X6 i, m1 Z6 @
for this purpose.: V5 ^8 \" [2 k9 ]( R4 b
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