UNE 21027-7:1991
CABLES AISLADOS CON GOMA DE TENSIONES NOMINALES UO/U INFERIORES O IGUALES A 450/750 V. CABLES RESISTENTES AL CALOR, PARA CABLEADO INTERNO, PARA TEMPERATURAS EN EL CONDUCTOR HASTA 110º C.
RUBBER INSULATED CABLES OF RATED VOLTAGES UP TO AND INCLUDING 450/750 V. CABLES WITH INCREASED HEAT RESISTANCE FOR INTERNAL WIRING FOR A CONDUCTOR TEMPERATURE OF 110 ºC.