Tender For annual rate contract welding machine, model rd 400a. tec [arc welding machine, model rd 400a. technical spec.-model-rd 400a, supply voltage-415 ( tolerance +10% & -10%) frequency-50/60 hz.,cooling-forced air, insulation class-h, primary current-42a, maximum rated at maximum-30,rated kva oca- 65-80v, setting range-50-400a, duty cycle-60%, protection class-ip23, diamention( lxwxh) -720mm x 630mm x 915mm, weight- 155 kgs. features- 1) machine is sturdy & stable of the annual rate contract specially 6010 celulosic, 7018 & 6013 & all types of alloy steel & ss electrodes. 2) prevention of electrod freezing. 3) full-wave silicon rectifire assures trouble free services. 4) heavy duty mounted on 4 wheel. 5) easy to move on heavy duty wheels. 6) better power factor. 7) low demand of primary current for starting. 24 month guarantee on power source. party to submit oem / autherisation & test certificate with warranty. ]