Protection of Electrical Apparatus Recommended Practise

The Relay Subcommittee of the Protective Devices Committee herewith submits its recommendations for the protection of electrical apparatus. These recommendations are based upon a questionnaire and the thirty-seven replies thereto from specialists in this line. The answers were interpreted and codified by a group of twenty experienced engineers particularly interested in the protection of electrical apparatus and circuits. It is hoped that this consensus of the present-day opinion will be the beginning of a series that will be augmented and improved with each periodic analysis and reissue.