tender for conversion of diesel operated toy train into battery operated toy train at national bal bhavan, kotla road, new delhi; 1 dismantling and removal of diesel engine and ancillary systems: 2 includes the careful disassembly and removal of the diesel engine block, radiator system, turbochargers, and engine mounts. also includes draining of fluids, disconnection of mechanical linkages, and preparation of the locomotive frame for retrofit. 3 removal of fuel delivery and exhaust systems: 4 involves the complete removal of fuel tanks, fuel lines, pumps, injectors, and exhaust piping systems including mufflers and silencers. this step ensures clearance for electric components and reduces dead weight. 5 procurement of electric traction motors: 6 supply of appropriate electric traction motors, typically 3-phase ac induction or permanent magnet synchronous motors (pmsm), with specified torque and power ratings suitable for locomotive propulsion. includes procurement logistics. 7 suppling, installation and mounting of traction motors: 8 mechanical installation of 20kw,96v electric motors to the axle or bogie structure. includes fabrication or modification of mounts, alignment, coupling with drive systems, and vibration damping elements. this also includes installation or integration of a gearbox, connecting shafts, and pulley systems as needed to transmit power from the motor to the drive wheels efficiently.1 year warranty for elctric motor 9 supply and installation of power electronics and control systems: 10 includes variable frequency drives (vfds), inverters, rectifiers, converters, and programmable logic controllers (plcs) to control traction motors. also includes driver interfaces, control panels, and communication systems.1 year warranty for elctronics system 11 supply and integration of energy source (battery bank or pantograph system): 12 depending on design, this includes supply and installation of 96v,100ah lithium-ion battery banks with bms (battery management system) or pantograph assemblies for overhead electric collection, along with related transformers or converters.3 year warranty for elctric motor 13 wiring, cabling, and electrical integration: 14 complete electrical work including heavy-duty cabling, control wiring, grounding, safety disconnects, fuse boxes, junction boxes, and cable tray installation. also includes protection systems like relays, breakers, and sensors. 15 structural modifications and fabrication work: 16 includes modifications to the locomotive body or chassis to accommodate new components such as batteries, motors, control units, or cooling systems. may include fabrication of brackets, enclosures, or cooling ducts. electronic display i/c switches meters and infonment system with speakers, windshild, side mirror and others items 17 testing, calibration, and commissioning: 18 includes pre-commissioning inspections, software and hardware calibration, operational testing of traction systems, safety checks, load trials, and final commissioning of the electric locomotive. 19 supply and installation of fast charging system: 20 includes the procurement and setup of high capacity fast chargers suitabele for electric locomotive battery systems. this includes charging control units, connectores, safety interlocks, cooling systems and intergration with existing power infrastructure.1 year warranty for fast charging 21 comprehensive amc for mini toy train battery engine 22 comprehensive annual maintenance contract (camc) for electric train engine, including all technical servicing, bms management, hv diagnostics, firmware updates, and emergency support and all electrical and mechnical servicing/replace – as per detailed scope