JIS C61558-2-8-2014
变压器, 电抗器, 电源装置及其组合装置的安全. 第2-8部分: 铃和钟用变压器和电源装置的特殊要求和试验
Safety of transformers, reactors, power supply units and combinations thereof -- Part 2-8: Particular requirements and tests for transformers and power supply units for bells and chimes