Standard routine tests, sample tests, type tests and after laying tests are normally performed according to IEC-standards.
Other international or national standards may be followed upon agreement between contractor and purchaser.
Routine tests of XLPE and PVC cables and accessories
−− PD measurement test
−− High-voltage test of main insulation
−− Electrical test of overs heath
−− Visual inspection
Sample tests are carried out with a frequency according to applicable IEC standards.
−− Conductor examination
−− Electrical resistance of conductor
−− Check of dimensions
−− Capacitance test
−− Hot set test
−− Electrical tests
After laying tests
−− DC voltage test of overs heath
−− AC voltage test of main insulation
XLPE cable systems specified according to IEC (International Electrotechnical Commission) are among many other standards accepted. IEC standards are considered to express an international consensus of opinion.
Some frequently used standards are:
Conductors of insulated cables.
Electric cables – Calculation of the current rating.
Tests on electric cables under fire conditions.
Power cables with extruded insulation and their accessories for rated voltage from 1 kV (Um=1,2 kV) up to 30 kV (Um=36 kV).
Power cables with extruded insulation and their accessories for rated voltage above 30 kV (Um=36 kV) up to 150N Kv (Um=170 kV). Test methods and requirements.
Calculation of the cyclic and emergency current rating of
Short-circuit temperature limits of electric cables with rated
voltages above 30 kV (Um=36 kV).
Power cables with extruded insulation and their accessories
for rated voltage above 150 kV (Um=170 kV) up to 500 kV
(Um=550 kV). Test methods and requirements.