UNE 21027-3/1M:1992
CABLES AISLADOS CON GOMA DE TENSIONES NOMINALES UO/U INFERIORES O IGUALES A 450 V/750 V. CABLES AISLADOS CON SILICONA RESISTENTES AL CALOR.
RUBBER INSULATED CABLES OF RATED VOLTAGES UP TO AND INCLUDING 450/750 V. HEAT RESISTANT SILICONE INSULATED CABLES.