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各位大侠，; N5 a4 w. }* q9 |) k
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
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7.3 Appliances having a range of rated values and which can be operated without* ^3 }. y5 C0 Y) _: G/ M& O2 b: D; g3 `% m5 W
adjustment throughout the range shall be marked with the lower and upper limits of the range
, y4 V: W6 X) ?; x: Sseparated by a hyphen.* D$ |2 k8 N/ S$ `9 M5 Z
NOTE 1 Example: 115-230 V: The appliance is suitable for any value within the marked range (a curling iron with- p/ y3 A4 ?8 [
a PTC heating element or an appliance incorporating an input switch mode power supply)./ K( ^ O: n# X5 e, e0 j) Z
Appliances having different rated values and which have to be adjusted for use at a particular1 u, Y* H) i7 _: D
value by the user or installer shall be marked with the different values separated by an
, g. D* m/ D L- P, M1 ^1 boblique stroke.+ D8 J4 \, z" O) V! B- Z/ b- P
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发表于 2018-7-10 14:19
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