The IEC (International Electrotechnical Commission) standard that addresses Very Low Frequency (VLF) testing is IEC 60502-2. IEC 60502-2 is part of the IEC 60502 series, which provides specifications for power cables with extruded insulation and their accessories for rated voltages from 1 kV (kilo-volts) up to 30 kV.
IEC 60502-2 specifically focuses on "Power cables with extruded insulation and their accessories for rated voltages from 1 kV (Um = 1,2 kV) up to 30 kV (Um = 36 kV) – Part 2: Cables for rated voltages from 6 kV (Um = 7,2 kV) up to 30 kV (Um = 36 kV)."
This standard includes guidelines and requirements for testing cables with extruded insulation, and it covers various aspects such as construction, dimensions, material properties, and testing procedures. VLF testing is often referenced within the context of testing cable insulation in accordance with IEC 60502-2.
It's important to note that standards are subject to updates and revisions, and there may be newer versions or amendments to the IEC standards over time. Therefore, it's advisable to check the latest version of the IEC standards or consult the relevant authorities for the most current information.