BSI - BS 5126-4
Mining type flameproof supply and control units for use systems up to 1100 V - Part 4: Specification for air-cooled transformers to power drilling machines
|Publication Date:||15 December 1993|
|ICS Code (Electrical apparatus for explosive atmospheres):||29.260.20|
Specifies service conditions, rated values, design and construction, verification and testing.