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2 p+ p" @; Y" u. K4 u& d$ w6 \ | Temperature Tests
0 Z$ A* C A E2 V4 D | 9.2& F' f; N. S' _2 K& l* o( W
| 61010-1(ed.1);am1;am25 E8 R& B" H- z5 t; g7 d/ ~: D$ J/ s
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0 k3 Q, w* G V% {4 i4 m! X# |Standard:7 ^8 [' n7 S( n2 E6 j. e' H. k* S
IEC 61010-1:1990 +A1:1992 + A2
; I4 ?6 X8 n3 k; D:1995
% Q% ~" A; a9 F ^* U( ESub clause:, E1 O, O4 }. P
9.2 D2 h- ~9 H0 q# c5 d& Q U5 w8 @
Sheet n. 335& T7 e, i2 l7 o
Page 1(1)7 Z# K8 k5 [% C9 u4 ?8 r" k* @
Subject:6 o& i& J" u$ i' o3 y
Temperature tests
8 @3 Y# }* I! KKey words:6 k1 d& }+ K O( h# I5 {' n
Steady state, H" E& _5 N" j: D
Decision n. 23 taken at
9 I. o, A& N' i& a5 h4 h! }37th meeting/2000# \# t4 K8 ?' Z: I9 e
Question:
s8 G: G; Z$ b, j2 p6 x) ^6 q0 N1 e6 nIn sub-clause, in 1st paragraph, what is meant by “steady state”?2 c/ p0 M. p m6 O) v: U1 e
Should this term be defined?, d+ Q. J k, n; [
Decision:' l; h, ^! }/ p# n* D
Steady state is not defined in IEC61010-1. It has been agreed that where the9 ?2 Q# G% s5 W' M/ T/ V5 Q* g. h
temperature rise is not greater than 2°C in 1 hour then it is reasonable to conclude that
2 s0 O. x% J3 N# Q; ?steady state has been achieved. This limit is used in other safety standards for example
) O7 Z' M% q* J7 i: x2 n' NIEC60601-1.
; q# ^/ w9 ^' b2 h# J. p# uExplanatory Notes:
0 l/ r0 w+ K9 `5 T: e% vA part is regarded as having reached steady state temperature when the temperature rise over
7 ^! x6 f5 Z4 Z, J# R# Z, e* x6 ]a0 j$ V5 X" U! ^+ u8 s3 ^: z5 g: d A
long period is almost negligible. The 2°C rise in 1 hour is considered a reasonable limit
" b3 G+ i. N; m! |4 qfor this purpose.+ L n( [- Y3 ] A
+ Z( k/ z, p( Q r9 s6 K1 \+ L) a* D' ]% ?& P4 B" ?
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