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请教各位:19.8中“如果温升大约为1K(1℃)/min,则该实验就完成了。”请问,其中的温升指的是谁的温升?其中的试验指的是什么试验?
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19.8 All appliances provided with supplementary heaters are subjected to the following test, f0 b1 o" V5 Y; o
under the conditions specified in Clause 11:( T M8 U9 H* \- S$ u: {# y' n; @
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After the airflow conditions specified are established, the indoor airflow is restricted to such3 w( Q/ U7 e( I5 X5 U: k& @
an extent that the temperature of the air in the outlet, measured by means of the
7 `) w( T2 F$ Z/ Qthermocouple grid (see 11.3), is 3 K below the temperature obtained after a temperature
# i/ {# b" K3 r& j( Xlimiting control, a motor protective device, a pressure switch or similar device operates for
/ X1 b% [- `1 u9 m" rthe first time as a result of slowly restricting the free area of the inlet.
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This is achieved if the temperature rise is approximately 1 K per min.
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It is necessary to restrict the free area of the inlet until the first of the protective devices
8 ]5 X* U8 S) L. K8 F. A7 ^6 zoperates and then operation is resumed with sufficient restriction so that the temperature of
o6 G% p. B! g( U( Lthe discharge air is 3 K below the temperature at the moment of cut-off.9 k+ W- `4 i+ p0 o
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Appliances are operated at rated voltage or at the upper limit of the rated voltage range.* q! a) {0 C5 G# n+ A/ S. d
NOTE 101 To facilitate this test, the protective device which has operated may be short-circuited once the temperature at which it operates has been determined. |
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