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再给个UL条款可能更明确:+ l4 E9 I; b' G/ c! V8 x' g' l
A capacitor or EMI filter connected across the primary circuit shall comply with the requirements in the Standard for Capacitors and Suppressors for Radio- and Television-Type Appliances, UL 1414, or the Standard for Electromagnetic Interference Filters, UL 1283. A capacitor or EMI filter is determined to be across the primary circuit when, in a shorted condition, a current of greater than 1 ampere passes through it when the equipment is in a heated condition. The means used to limit the current to 1 ampere or less shall be a fixed impedance or a protec tive device rated 1 ampere or less. |
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