Providing, installation and testing of 60 HP capacity fully automatic auto transformer starter and allied works for LIS Yechinambal.

Providing, installation and testing at site 60 HP capacity fully automatic auto transformer starter. The starter shall comprise of fitment of the following equipment and accessories. a) Main contactor of L&T make having capacity 100 Amp. b) Delta contactor assembly of L&T make having a capacity of 100 Amp. c) Auto transformer contractor assembly of L&T having a range of 65-80 Amp. d) Thermal overload relay (45 to 75A) MN series of suitable Capacity (L&T make). e) Electro-pneumatic timer assembly having time range of 0-60/sec. Barat Batlar Hamar make. f) Single phase preventer of L&T make/Minilac make for above capacity starter. g) Auxiliary fuse units of suitable ampere range. h) Electrolytic copper bus bar strips of suitable size, duly tinned air insulated, mounted on suitable size backlit insulators. i) Three No. current transformer coils with a range of 5-500 Amp. Of L&T/AE make, fitted in each bus bar strips connected to 96 x 96 mm square, Digital ampere meter of AE/L&T make fitted on the door of the housing. Each phase shall indicate the amp range of having one number selector actuator fitted. j) One number digital voltmeter of AE/L&T make 0-500 volts with one selector suitable for cut showing voltage in each phase. k) On/Off push button actuator of red and green colors of 5A-415 volts 50 HZ suitable for cut, of dia. 30mm. l) Complete internal wiring of the control panel for operating the starter, by using single strand copper wire of standard make and of adequate capacity. The wiring should be completed properly and be provided with plastic washers for identification of each wire at various joints. Housing for all the equipment fabricated out of MS Sheets of suitable size and gauge and shall be fabricated with a hinged door at the front which shall have a proper locking arrangement. The housing shall be provided with a MS base frame welded/bolted to the housing at the bottom. The necessary brackets for the fitment of the above equipment. The housing shall have to be provided with necessary cut out spaces for meters/push button actuators/selectors incoming and outgoing connections. And have air vents and shall have be painted with two coats of red oxide primer spraying two coats of synthetic enamel (Shade: RAL 7035) from inside as well as outside after providing and applying of putty and smoothing of the surface. Auto Transformer coil made out of 1st class electrolytic copper strips having capacity suitable for the above starter. The coil shall be provided with “F” class insulation tape. The coil shall have tapings taken out at 40%, 60% and 80%. The Core of the auto transformer shall be fabricated out of 1st class silicon of suitable grade pota sheets cut to size and then tightening of the same adequately. The auto-transformer tank shall be made out of M.S sheet of suitable thinness so as to make the tank leak proof, which have a lid at the top provided with holes for tightening the same of the tank. The tank shall have painted in two coats of red oxide primer. The job includes providing and fitting of high grade low viscosity transformer oil of power make upto the required level in the tank so that the auto-transformer coils gets fully immersed. Adequate capacity electrolytic copper bus strips or cable shall be fitted for internal connections. The tank shall have to be fitted at back side of the starter.