Tenders for Supply of Scr Panel Assembly For Controlling Of Mg. Scr Panel Assembly For Controlling Of Mg, In Siemens Controlled Hhp Locomotives. Detail-Field Control Unit Main Generator Ecc1s3 As Per Siemens Pt. No. 102327808 Specification Edps - 382, Rev. Nil, W Dg4/El/Ps-09, Rev. R1.