This standard ( Part V ) covers additional recommendations required for use of rectifier and thyratron, the general and common aspects having already been covered in IS : 2597 ( Part I )-1964〓( see 0.2).
IS 2597 Pt.5-1971 history
1971IS 2597 Pt.5-1971 Operating Instructions for the Use of Electronic Valve Part V Rectifier and Thyratron