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Standard: $ S3 O1 a* R, KIEC 61010-1:1990 +A1:1992 + A2 . Q, L2 l1 w4 J w9 @9 a- k:19954 x7 R8 B. X- E8 z8 A
Sub clause: 9 ]6 r4 }$ u$ w7 \. `0 @7 X9.23 n2 M) k1 A* z! Y- _% H
Sheet n. 3353 Z6 z4 x6 L, R) `
Page 1(1) * @) ~" K2 Q' ?" m& eSubject:1 f* L! ^( L: F: r6 B
Temperature tests" c. h) E) G4 m: A) a+ w
Key words: ; p1 T0 p$ Q$ oSteady state7 z l( _+ I8 I+ j9 ^3 y) }
Decision n. 23 taken at 9 Q% z! d9 ^, V0 L37th meeting/2000& c8 r$ q, l, B9 M7 i' M
Question: . B9 k4 L# y: E% F( m& [In sub-clause, in 1st paragraph, what is meant by “steady state”?( z; z$ h1 S/ D9 C
Should this term be defined? 9 R6 I: ^8 s% U. C# ~/ D: A8 nDecision:' Q: B9 H6 t5 x
Steady state is not defined in IEC61010-1. It has been agreed that where the : o+ W9 y0 x8 [5 wtemperature rise is not greater than 2°C in 1 hour then it is reasonable to conclude that( v* E/ p! ?4 `" j
steady state has been achieved. This limit is used in other safety standards for example) i8 u, z( f- s+ i5 u
IEC60601-1. ; w* P" d& ^$ v& bExplanatory Notes:1 p9 D: D: Z. R5 m- P+ ?! u
A part is regarded as having reached steady state temperature when the temperature rise over ; Q# R/ S0 V4 I# r) a3 Ga, O; J. j* Z4 G
long period is almost negligible. The 2°C rise in 1 hour is considered a reasonable limit9 b9 m+ w* i& [9 L4 {+ \
for this purpose. 5 j) p- f# H: y' l3 {$ Z- k% p l+ `- h% w. g
[attach]76212[/attach] ( o+ T7 o3 J. t7 ~, S2 c: H 4 |0 p3 j; k' Z
