According to the IEC60 - 2 and GB/T16927. 2 standard
this paper introduces a 300kV standard impulse voltage measuring system of which the in-tercomparison measurement (ICM) results under 100kV full and chopped ligyting impulse voltages could be traced to the uncertainty of another 300kV standard impulse voltage measuring system presented by PTB. Meanwhile
the experimental step respose parameters of such a measuring system are also presented. The results show that the properties of the standard measuring system meet the requirements specified in the above standards and can be taken to circulate for domestic ICM.