IS 9921 Pt.3-1982
Specification for alternating current isolators (isolators) and earthing switches for voltages above 1000 V

Standard No.

IS 9921 Pt.3-1982

Release Date

1982

Published By

IN-BIS

Latest

IS 9921 Pt.3-1982

Scope

VOLTAGES ABOVE 1000 VThis standard (Part III ) covers the design and constructional features of isolators and earthing switches intended for use on system voltages above 1 000 V ac.

IS 9921 Pt.3-1982 history

• 1982 IS 9921 Pt.3-1982 Specification for alternating current isolators (isolators) and earthing switches for voltages above 1000 V