IEC 60196:1965 pdf download IEC标准频率 IEC standard frequencies

IEC 60196:1965 pdf download,IEC standard frequencies. IEC标准频率.
The standard frequencies are the frequencies to be adopted for single-phase and three-phase a.c.systems,for installations in ships,for a.c.traction systems,for tools,for the rayon industryand for aircraft.
This standardization is limited to frequencies up to 10 000 Hz (c/s).
标准频率是单相和三相交流系统、船舶安装、交流牵引系统、工具、人造纤维工业和飞机所采用的频率。
此标准化仅限于频率高达10000 Hz（c/s）。