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各位大侠,
/ a2 J0 h- T/ |2 r% ?: [8 B请教一下,排气扇标识 额定频率 标识为 220-240V~ 50/60Hz 是否可以,是否必须标识为220-240V~ 50-60Hz,谢谢1 B7 L$ Z/ B% E V3 m0 C, \
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7.3 Appliances having a range of rated values and which can be operated without. |$ d; r1 L1 u- D, v% X
adjustment throughout the range shall be marked with the lower and upper limits of the range
2 ?1 W' p! H% aseparated by a hyphen., Q- }* U, ]/ r: R% J0 k4 N* |
NOTE 1 Example: 115-230 V: The appliance is suitable for any value within the marked range (a curling iron with/ Y* O2 W. W' ], `
a PTC heating element or an appliance incorporating an input switch mode power supply).. j R/ }* V) @) r
Appliances having different rated values and which have to be adjusted for use at a particular
1 E% @. y3 D8 x6 Z0 Z3 dvalue by the user or installer shall be marked with the different values separated by an) F/ d0 s/ m1 V( p5 q
oblique stroke.4 Q* t6 x8 V) a$ ~0 o8 S6 q1 K
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