UNE 20104-1:1990

INTERRUPTORES DE ALTA TENSION. PARTE 1: INTERRUPTORES DE ALTA TENSION PARA TENSIONES ASIGNADAS SUPERIORES A 1 KV E INFERIORES A 52 KV

HIGH-VOLTAGE SWITCHES. PART 1: HIGH-VOLTAGE SWITCHES FOR RATED VOLTAGES ABOVE 1 KV AND LESS THAN 52 KV