tender for purchase electrical machines , electrical machines , 1. dc shunt motor set up with handheld photo-contact tachometer: capacity: 5 kw / 7.5 hp / voltage: 220 v armature / 220 v field / field type: self or separately excited / winding should be copper wound / dc shunt motor should be fitted with interpoles / laminations should be of high grade / field winding should be fitted with k type thermistor for temperature monitoring / duty s1 - continuous rated / enclosure ip21 / screen protected deep proof / should be of foot mounted - b3 / yoke should be heavy duty solid ms / laminated pole punching / laminated rotor stacks / mechanically balanced rotor / insulation class f / temperature rise class b / properly graded and sized carbon brushes / 4 nos. of educational type terminals and terminated on printed facia for good understanding of connections / frame size 132 / mechanical loading arrangement for above motor consisting of 400 mm diameter drum mounted on motor shaft / 2 no. of 6 inch round dial analog scales / lead screw with guide nut / friction belt with necessary frame structure to mount motor and torque measurement arrangement / bracket mounted on non driving end (nde) of motor for mounting rpm sensor / sensing object fixed on nde shaft of motor. handheld photo contact digital tachometer - technical specifications ranges 60 rpm - 50,000 rpm (contact side) / surface speed 6 m/min - 5000 m/min / 60 rpm - 1,00,000 rpm (photo side) / resolution 0.1 rpm: 0 - 1000 rpm | 1 rpm: 1000 rpm / display type 5 digits 10mm height red led / power source 4 x 1.5v aa battery / auto shut off feature should be included. , 2. dc series motor set up with handheld photo-contact tachometer: capacity: 5 kw / 7.5 hp / voltage: 220 v / field type: series with interpoles / winding should be copper wound / dc series motor should be fitted with interpoles / laminations should be of high grade / field winding should be fitted with k type thermistor for temperature monitoring / duty s1 - continuous rated / enclosure ip21 / screen protected deep proof / should be of foot mounted - b3 / yoke should be heavy duty solid ms / laminated pole punching / laminated rotor stacks / mechanically balanced rotor / insulation class f / temperature rise class b / properly graded and sized carbon brushes / 4 nos. of educational type terminals and terminated on printed facia for good understanding of connections / frame size 132 / mechanical loading arrangement for above motor consisting of 400 mm diameter drum mounted on motor shaft / 2 no. of 6 inch round dial analog scales / lead screw with guide nut / friction belt with necessary frame structure to mount motor and torque measurement arrangement / bracket mounted on non driving end (nde) of motor for mounting rpm sensor / sensing object fixed on nde shaft of motor. handheld photo contact digital tachometer - technical specifications ranges 60 rpm - 50,000 rpm (contact side) / surface speed 6 m/min - 5000 m/min / 60 rpm - 1,00,000 rpm (photo side) / resolution 0.1 rpm: 0 - 1000 rpm | 1 rpm: 1000 rpm / display type 5 digits 10mm height red led / power source 4 x 1.5v aa battery / auto shut off feature should be included. , 3. coupled shunt motor - shunt generator set: motor specification: capacity: 5 kw / 7.5 hp / voltage: 220 v armature / 220 v field / field type: self or separately excited / dc shunt motor should be fitted with interpoles / laminations should be of high grade / field winding should be fitted with k type thermistor for temperature monitoring / duty s1 - continuous rated / enclosure ip21 / screen protected deep proof / should be of foot mounted - b3 / yoke should be heavy duty solid ms / laminated pole punching / laminated rotor stacks / mechanically balanced rotor / insulation class f / temperature rise class b / properly graded and sized carbon brushes / 4 nos. of educational type terminals and terminated on printed facia for good understanding of connections / frame size 132. generator specification: capacity: 5 kw / 220 v armature / 220 v field / field type: self or separately excited / dc shunt generator with interpoles / laminations should be of high grade / field winding should be fitted with k type thermistor for temperature monitoring / duty s1 - continuous rated / enclosure ip21 / screen protected deep proof / should be of foot mounted - b3 / yoke should be heavy duty solid ms / laminated pole punching / laminated rotor stacks / mechanically balanced rotor / insulation class f / temperature rise class b / properly graded and sized carbon brushes / 4 nos. of educational type terminals and terminated on printed facia for good understanding of connections / frame size 132. both machines should be mounted on a common c channel base and coupled with each other with jaw type flexible couplings. should have a complete sheet metal coupling guard. bracket mounted on nde of one machine for mounting rpm sensor and sensing object fixed on nde shaft of one machine , 4. series generator capacity: 5 kw / voltage: 220 v armature / dc series generator with interpoles / laminations should be of high grade / field winding should be fitted with k type thermistor for temperature monitoring / duty s1 - continuous rated / enclosure ip21 / screen protected deep proof / should be of foot mounted - b3 / yoke should be heavy duty solid ms / laminated pole punching / laminated rotor stacks / mechanically balanced rotor / insulation class f / temperature rise class b / properly graded and sized carbon brushes / 4 nos. of educational type terminals and terminated on printed facia for good understanding of connections / frame size 132.