NA2XSEY Cable structure: Medium voltage NA2XSEY Cable with three-core cross-linked polyethylene (XLPE) insulation is intended for power transmission and distribution. Nominal voltage 6/10 kV (12 kV) Used for: For transmission of electricity at high voltage in places where it is not possible or possible to carry out the type of aerial AS. It is also used in urban areas to connect to a high-voltage transformer, it can be buried in the ground (in a trench).