bids are invited for electric motor type : squirrel cage voltage : 6.6kv+ / -10% frequency : 50hz, + / -5% frame size : 315l duty cycle : s1 mounting : b3 insulation class : f enclosure : tefc ambient temperature : 50deg.c direction, rotation : bidirectional method of cooling : ic411 speed : 1500rpm power, rated : 280kw ht, unearthed system, rh 100%, environment : laden with conductive dust, construction:cast steel, degree of protection: ip55, insulation class:f-vpi resin rich, but temp rise limited to class b, starting : dol bidirectional rotation, terminal boxes : phase segregated protection:ip55, fault level:40 ka, tb-position: ( main ) rhs viewed from de 90 deg rotation, star-lhs viewed from de-90 deg rotation, both tb shall be suitable for 1rx3c x 300 sqmm al, 11kv xlpe cable, type of load :conveyor belt, mode of power tranmission / coupling: fluid coupling starting torque : 120% ( min ) of full load torque, pull out torque:270% ( min ) of full load torque, over load capacity : 160% for 15 sec , bearing : anti friction , accessories :space heaters, winding rtd-06 nos, 100 ohm at 0 deg c, 3 wire duplex, bearing rtd-02 nos, 1000hm at 0 deg c with suitable cable and terminals, dial type electro contact thermometers for de and nde bearings. thermal withstand time: 20 sec ( hot ) , 25 sec ( cold ) , pi- >2.5, dimensional data ( in mm ) : a:610, b:1000, c:216, e: 170 , d:95 m6, k:28, bb: 1160, ab:730, ha:31, l:1900+ / - 50 – all values in mm and letter designations as per 1s8223:99, iec 72-2 ( 90 ) , motor gd2 :36 kgm2, weight :2600 kg ( approx ) , applicable standards :ipss 1-03-24-09, 1-03- 18-07 is 325 / 96, rsn no : 82.03.03.01& 02