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各位大侠,/ X* z4 K' S2 V
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
* [ r7 j* M# }- x# Hadjustment throughout the range shall be marked with the lower and upper limits of the range
/ e4 B Z. _4 [$ ^0 R0 iseparated by a hyphen.# V, r. z7 A( g9 h( A1 t
NOTE 1 Example: 115-230 V: The appliance is suitable for any value within the marked range (a curling iron with
c9 K' T: ^, c; X- K+ ]2 Aa PTC heating element or an appliance incorporating an input switch mode power supply).8 ^, W5 B/ f& o) _% K2 `
Appliances having different rated values and which have to be adjusted for use at a particular6 f$ {; P- M$ |
value by the user or installer shall be marked with the different values separated by an
! Q/ F7 k; y0 k: Ooblique stroke.
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