核心提示：Safety of small power transformers, power supply units and similar - Part 2-8: Particular requirements for bell and chime transformers电力变压器、电源装置和类似产品的安全，第2-8部分：电铃和电闹钟变压
Safety of small power transformers, power supply units and similar - Part 2-8: Particular requirements for bell and chime transformers 电力变压器、电源装置和类似产品的安全，第2-8部分：电铃和电闹钟变压器的特殊要求 发布时间：2010-10 失效时间：NIL
2010-12-22
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