bids are invited for dc converter, i/p:380vac,3 phase,50hz;o/ - supply,supervision of installation,testing,commissioning and load-trial of dc drives suitable for dc motor of following specifications.the drives shall be retrofitted in place of existing ansaldo,italy make dc drives of model no.spdm 200ude.-------------------------------------------------------------------detailed general technical specification shall be as per the annexure enclosed herewith.dc drive selection:-------------------section: dc motormotor power : 43 kwmotor armature voltage: 400vmotor armature current a (approx.): 126 afield current: 5adrive type: mentor mp 210a4 (2 q)drive continuours current a : 210 a @ 40 deg.c.field controller: inbuilt 8 adetailed specification is as per nit. , dc drive conv 60a,500vac,spdm 060rge - supply,retrofit and commissioning of dc convertar suitable for winder drive dc motor application. the drive shall be retrofitted in place of existing m/s.ansaldo make dc drive, model:spdm 060 rge.detailed specifications of the drive and other requirements are as follows:rating of winder dc motor:make: ansaldo,type:dh 180,400vdc,rating: 11kw,armature voltage:400v dc,armature current:36a dc,field voltage:208.5v dc,field current:2.7a dc,duty:s1,drive type: mentor mp 75a4 (4 q)drive continuours current a : 75 a @ 40 deg.c. and 75 a @ 50 deg.cfield controller: inbuilt 8 adetail specification is as per nit. , auto transformer 415/380v 3kva - drive electronics transformerrating:2.5kvaphase: 2ph/1phpri voltage: 415vsec voltage:300vcore: crngoinsul class:btemp. class:bamb. temp:50 deg.c total quantity : 1