SIS SS 421 08 79-1989
Electrical apparatus for potentially explosive atmospheres — Intrinsically-safe circuits — Guidance on design and assessment

Standard No.

SIS SS 421 08 79-1989

Release Date

1989

Published By

SE-SIS

Latest

SIS SS 421 08 79-1989

Scope

Denna standard ger anvisningar f?r ber?kning av egens?kerhet f?r vissa enkla egens?kra str?mkretsar som skall ing? i egens?ker apparat eller tillh?rande apparat enligt SS EN 50 020.

SIS SS 421 08 79-1989 history

• 1989 SIS SS 421 08 79-1989 Electrical apparatus for potentially explosive atmospheres — Intrinsically-safe circuits — Guidance on design and assessment