DIN EN 61248-3-1998 电子和电信设备用变压器和电感器.第3部份:以性能批准程序为基础的电力变压器分规范
Transformers and inductors for use in electronic and telecommunication equipment - Part 3: Sectional specification for power transformers on the basis of the capability approval procedure (IEC 61248-3:1996); German version EN 61248-3:1997