IEC 60986:2008 offers guidance on the maximum short-circuit temperature limits for electrical cables with rated voltages ranging from 6 kV (U m = 7,2 kV) up to 30 kV (U m = 36 kV), focusing on the following aspects:
- Insulating materials;
- Oversheath and bedding materials;
- Conductor and metallic sheath materials, as well as methods of connection.
The design of accessories and the impact of installation conditions on the temperature limits are also considered.
The calculation of the permissible short-circuit current in the current-carrying components of the cable should adhere to IEC 60949 standards.
