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各位大侠,
/ y3 G4 }( U7 I2 T# X8 }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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! X5 |" {8 k4 x8 ?: W) `! D7.3 Appliances having a range of rated values and which can be operated without# ]) N) h6 @# v3 d4 j
adjustment throughout the range shall be marked with the lower and upper limits of the range
V! B7 L y8 bseparated by a hyphen.3 K7 @& I& a, H" P( o. M
NOTE 1 Example: 115-230 V: The appliance is suitable for any value within the marked range (a curling iron with, a9 ~2 U0 K2 ]+ O4 H
a PTC heating element or an appliance incorporating an input switch mode power supply).
# ]- A; a" ^3 u' X" LAppliances having different rated values and which have to be adjusted for use at a particular& K1 `& A0 ?% s' V# w) v5 A
value by the user or installer shall be marked with the different values separated by an
* k; q( g, B; H) i: U! {8 g- yoblique stroke./ Q6 p9 k5 ~2 A8 G9 g" A f7 R
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