STB PDF

TEST PROCEDURE FOR THERMAL ENDURANCE OF INSULATING VARNISHES - ELECTRIC STRENGTH METHOD. Original standard UNE 21570-1993 in PDF full version. Additional info + preview on request

Document status: Withdrawn

TIPE B HELICAL VIDEO RECORDERS. Original standard UNE 21602-1993 in PDF full version. Additional info + preview on request

Document status: Withdrawn

Gassing of insulating liquids under electrical stress and ionization. Original standard UNE 21628-1995 in PDF full version. Additional info + preview on request

Document status: Active

Test method for evaluating thermal endurance of flexible sheet materials using the wrapped tube method. Original standard UNE 21795-1996 in PDF full version. Additional info + preview on request

Document status: Withdrawn

Low-voltage switchgear and controlgear for industrial use Terminal marking, distinctive number letter for particular contactor relays. Original standard UNE 21811-1982 in PDF full version. Additional info + preview on request

Document status: Active

Low-voltage switchgear and controlgear for industrial use Terminal marking and distinctive number for particular control switches. Original standard UNE 21813-1982 in PDF full version. Additional info + preview on request

Document status: Active