Present practises in protection annual report of committee on protective devices

To the Board of Directors: Foreword Because of the many developments during the past few years within the scope of the Committee on Protective Devices, it was held desirable to present, this year, a survey of the present state of the art in the field of protective devices for power systems, and the following annual report has been prepared with this purpose in view. The Committee has also, during the past year, given careful attention to the possibilities of further standardization in the field of protective devices, and has certain definite recommendations to make.