UNE 21136-20:1993
ELECTRICAL RELAYS. PROTECTION (PROTECTIVE) SYSTEMS.

Standard No.

UNE 21136-20:1993

Release Date

1993

Published By

AENOR

Latest

UNE 21136-20:1993

UNE 21136-20:1993 history

• 1993 UNE 21136-20:1993 ELECTRICAL RELAYS. PROTECTION (PROTECTIVE) SYSTEMS.