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$ m# m, V! T' D9 H- @ | Temperature Tests
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8 Y6 u7 s) i) I; G | 61010-1(ed.1);am1;am2
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% J. Q8 }: o9 b7 T! \Standard:
8 b# E/ o0 }* hIEC 61010-1:1990 +A1:1992 + A2$ G- a+ z) Q" r9 {, U
:19951 @6 g" x1 ?1 y
Sub clause:8 s9 r5 T/ m6 j
9.2
5 T; q8 {8 y% YSheet n. 335+ I4 B5 ?9 t. K
Page 1(1)
. ?. g3 n9 h/ r' n5 u& }$ k; ?- j" ISubject:( M- [3 M: S0 v3 p7 j9 F) z) g
Temperature tests
) _( O4 `" A+ v$ |: FKey words:
! J+ s# m5 m7 D( M) n, gSteady state$ O2 H" ?, W- ]' s6 f8 Y: N
Decision n. 23 taken at3 ]! m# s }' o7 B& k: C
37th meeting/20001 ]2 ^6 S) Q! i3 R* O0 h# W
Question:' n0 B1 j+ F/ h; o
In sub-clause, in 1st paragraph, what is meant by “steady state”?
' ~+ M1 |. Q+ a/ r1 T! M) ]7 rShould this term be defined?
8 F2 j5 A9 X8 D) u m6 U! ?1 QDecision:
/ W, Z/ F' v5 }* _8 y; H) bSteady state is not defined in IEC61010-1. It has been agreed that where the* |2 f# J; {4 Y7 f& L& ]6 ~4 a
temperature rise is not greater than 2°C in 1 hour then it is reasonable to conclude that0 I) m5 w" k# w8 G
steady state has been achieved. This limit is used in other safety standards for example; ?2 C1 i4 F& b
IEC60601-1.
# M; q' N# g) C5 v' {7 y% qExplanatory Notes:9 j5 v T! I1 G: |: l$ n0 U1 P! c
A part is regarded as having reached steady state temperature when the temperature rise over1 l, C- j2 B4 H9 y) e
a
* f5 W6 B8 W! G- |% }5 C4 nlong period is almost negligible. The 2°C rise in 1 hour is considered a reasonable limit" n' T" d) ]/ c; I& C
for this purpose.3 a9 ` E X) ~! ]1 q6 n; ~
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