DSH 335 Temperature Tests

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无绳壶无绳电熨斗插拔寿命试验机

IEC60335试验指甲

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DSH 335 , s% u( R- [6 F8 ^: s2 S0 }

Temperature Tests " C+ [! @! y* l1 e* B

9.2

61010-1(ed.1);am1;am2 # M* R1 B! {, {6 b6 A

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1 H% C4 T% j5 y/ G: A7 D+ ~% VStandard:
. y9 W# }6 ^& [) |( [) h# pIEC 61010-1:1990 +A1:1992 + A2
:1995
Sub clause:
9.2
1 m7 D- y1 t: u3 oSheet n. 335
5 W: Y  K6 z9 K4 t6 b7 mPage 1(1)
Subject:
Temperature tests
Key words:
& O& B$ d0 A6 Z9 V. t5 y; `Steady state
Decision n. 23 taken at
37th meeting/2000
& _; K2 E7 u; n; |Question:
' i- j4 I# D; ^; N  Y; aIn sub-clause, in 1st paragraph, what is meant by “steady state”?
Should this term be defined?
! x/ L( P! x4 f' pDecision:
* u; K& R5 u0 `2 C8 ~- FSteady state is not defined in IEC61010-1. It has been agreed that where the
0 s, r6 x4 r: utemperature rise is not greater than 2°C in 1 hour then it is reasonable to conclude that
steady state has been achieved. This limit is used in other safety standards for example
! ?( I6 }& R0 WIEC60601-1.
. }3 q! h1 }4 a' i9 [- |/ HExplanatory Notes:
0 y, S9 @0 f5 o2 d7 g9 HA part is regarded as having reached steady state temperature when the temperature rise over
a
  e! [$ B% U( wlong period is almost negligible. The 2°C rise in 1 hour is considered a reasonable limit
for this purpose.

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