EN 50020:1977
Electrical apparatus for potentially explosive atmospheres; intrinsic safety i

Standard No.

EN 50020:1977

Release Date

1977

Published By

European Committee for Standardization (CEN)

Status

Withdraw

Replace By

EN 50020:1977/A1:1979

Latest

EN 50020:1994

EN 50020:1977 history

• 1994 EN 50020:1994 Electrical Apparatus for Potentially Explosive Atmospheres - Intrinsic Safety 'i'
• 1990 EN 50020:1977/A5:1990 Electrical apparatus for potentially explosive atmospheres; intrinsic safety i
• 1990 EN 50020:1977/A4:1990 Electrical apparatus for potentially explosive atmospheres; intrinsic safety i
• 1990 EN 50020:1977/A3:1990 Electrical apparatus for potentially explosive atmospheres; intrinsic safety i
• 1985 EN 50020:1977/A2:1985 Electrical apparatus for potentially explosive atmospheres; intrinsic safety i
• 1979 EN 50020:1977/A1:1979 Electrical apparatus for potentially explosive atmospheres; intrinsic safety i
• 1977 EN 50020:1977 Electrical apparatus for potentially explosive atmospheres; intrinsic safety i