BS 5501-4:1977 Electrical apparatus for potentially explosive atmospheres. Powder filling 'q'
Publication Year
1977
Document Status
Withdrawn
Abstract
Apparatus of rated voltage 6,600V or less with no moving parts in direct contact with the filling material. Supplements Part 1.
Document History
Superseded by BS EN 50017:1994.
ISBN
0580095681
Publisher Information
British Standards Institution
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