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当然是在50度下测试冷态电阻啊
3 V2 F% J2 E) f: Y
. w) \" @- }7 l/ f$ t6 s) w" Kc) The ambient temperature within the draught-proof enclosure shall be within the range of
3 Y6 u- g/ F3 {10 °C to 30 °C and should preferably be 25 °C. It shall not vary by more than ±1 °C during
, i0 I0 K# g5 P7 k4 j5 ?measurements and during a preceding period long enough to affect the results.
# y. z; A3 f4 a& G! K If, however, a lamp has temperature-sensitive electrical characteristics (e.g. a fluorescent
+ K* t( m/ R6 C/ ]0 x9 Zlamp), or if the ta rating of the luminaire exceeds 30 °C, the ambient temperature within the 0 R, r3 n- m/ f6 I4 t
draught-proof enclosure shall be within 5 °C of the ta rating and should preferably be the Q7 ]. Y& o) V0 [+ Z6 Y* t
same as the ta rating. |
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