DSH 335 Temperature Tests

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广东安规检测
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灯具防风罩

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家电125mm试验指

E12灯头量规

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

Temperature Tests

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61010-1(ed.1);am1;am2 0 V* c3 B; p! c% F* U# T

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Standard:
+ L: G1 Z8 v. ~4 P; a; gIEC 61010-1:1990 +A1:1992 + A2
:1995
/ H  s3 C! E& Y3 q2 `- E. B7 wSub clause:
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) G( Q' s; G% N4 E3 tSheet n. 335
Page 1(1)
/ i9 g9 |4 |0 P4 X* DSubject:
$ N  M  x  e& o! k8 W% P0 [  ~$ ZTemperature tests
Key words:
8 @+ A8 E' e7 \7 t; R/ g) z+ Z3 uSteady state
Decision n. 23 taken at
37th meeting/2000
Question:
* {( @$ J" |. H* ?8 ^$ {) CIn sub-clause, in 1st paragraph, what is meant by “steady state”?
  h- {: K' r0 w) S* r6 eShould this term be defined?
Decision:
; M9 i% y( y  N" f3 \, L9 S) jSteady state is not defined in IEC61010-1. It has been agreed that where the
temperature 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
IEC60601-1.
Explanatory Notes:
9 b3 i6 I7 K$ Z+ G3 h3 CA part is regarded as having reached steady state temperature when the temperature rise over
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* K2 u+ q. L$ `5 R# \( qlong period is almost negligible. The 2°C rise in 1 hour is considered a reasonable limit
for this purpose.
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