UNE 21027-3:1983
CABLES AISLADOS CON GOMA DE TENSIONES NOMINALES U0/U INFERIORES O IGUALES A 450/750 V. CABLES AISLADOS CON SILICONA RESISTENTES AL CALOR
RUBBER INSULATED CABLES OF RATED VOLTAGES TO AND INCLUDING 450/750 V. HEAT RESISTANT SILICONE RUBBER INSULATED CABLES.