DL 400-1991
Technical regulations for relay protection and safety automatic devices (English Version)

Standard No.

DL 400-1991

Language

Chinese, Available in English version

Release Date

1991

Published By

Professional Standard - Electricity

Status

Withdraw

Latest

DL 400-1991

Scope

This regulation is the basic principle that is followed by all relevant departments including the scientific research, design, manufacturing, construction and operation of power system relay protection and safety automatic devices. This regulation applies to relay protection and safety automatic devices for power equipment and lines in power systems of 3kV and above.

DL 400-1991 history

• 1991 DL 400-1991 Technical regulations for relay protection and safety automatic devices