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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?/ L$ A9 t( r1 U. a2 j4 D
2 h+ V2 Y; Q; `19.8 All appliances provided with supplementary heaters are subjected to the following test! }/ i8 S1 W% g
under the conditions specified in Clause 11:2 w4 G9 R; v2 U* f* k$ g0 u% n
! s5 {/ C5 {' N3 @5 SAfter the airflow conditions specified are established, the indoor airflow is restricted to such+ H7 q6 m2 y; U: w; P' G/ f' t
an extent that the temperature of the air in the outlet, measured by means of the
! O; ^2 \& M2 k( x- Ithermocouple grid (see 11.3), is 3 K below the temperature obtained after a temperature
) t/ z+ v( E- P. D2 u( D# }, ^( dlimiting control, a motor protective device, a pressure switch or similar device operates for5 X5 e |+ p S( V. a
the first time as a result of slowly restricting the free area of the inlet./ X" n6 `' d, ~
1 Y1 K" o5 h0 u' A, J! f$ wThis is achieved if the temperature rise is approximately 1 K per min.
T, F% }$ p1 `+ K0 @/ a9 O7 V5 D* }6 P
It is necessary to restrict the free area of the inlet until the first of the protective devices1 F, X- Z9 ~7 D8 {
operates and then operation is resumed with sufficient restriction so that the temperature of5 {7 n: J0 T! `9 z ?% M
the discharge air is 3 K below the temperature at the moment of cut-off.
2 [! s& s8 w' X% `( y6 I# z
" w8 ~1 V, v" v- [: |" G1 D% B% mAppliances are operated at rated voltage or at the upper limit of the rated voltage range.
6 F/ X# t" x1 C$ R8 NNOTE 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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