augmentation / improvement of water supply at water plant roop nagar digiana by way of installation of electrical equipments along with allied works - designing, fabrication, installation, testing and commissioning of lt control panel 415 volts, ac-3 phase, 50 hz. for induction motor ( upto 80 hp ) installed at water plant roop nagar digiana . the panel should be dust and vermin proof fabricated out of 16 swg cr sheet supported on m.s. angle of suitable size and having provision for fixing it on the ground with the help of foundation bolts. the panel should be sturdy enough for vibration free operation and should be equipped with suitable locking / sealing arrangements. the structure should be provided suitable entry and exit holes for incoming and outgoing cables. the panel should be given two coats of anti rust primer and two coats of enamel paint. the panel should have equipped with following components / features: n1. m.c.c.b.: the panel should be fitted with an m.c.c.b. of suitable capacity ( approx 250 amp. ) , 1 no. volt meter, 1 no ammeter along with a set of cts, 1 no. voltage selector switch., 1 no. automatic selector switch. and a set of ryb indicators at incoming side. n2. star delta starter : the panel should be fitted with a fully automatic star delta starter comprises of 3 nos. air break contactor of suitable capacity approx 80 amp ( 2 for main and delta supply, 1 no. air break contactor for star operation ) , 1 no. timer for change over the supply of motor from star to delta, 2 nos. push buttons for start and stop operation of motor, 1 no. indicator .1 no. mcb 2 amps. for the protection of internal control wiring, a neat and clean internal control wiring should be made with flexible copper cables to complete the star delta circuit of outgoing supply. n3. protections devise / fault analyzer: a protections devise / fault analyzer shall be fitted with the panel with capability to: na. protect the motor by isolating the power supply of motor by de-energizing the starter / panel from following electro-mechanical faults which may otherwise damage the motor windings: ni. voltage related fault: single phasing, under voltage, over voltage, unbalance voltage. nii. current related fault: over current / load, dry running, unbalance current / load, earth leakage, short circuiting. nb. display line current of r, y & b phase and also line voltage of ry, yb and br phase. nc. display and record trip counts and indicate trip status for over load, under load, single phase, unbalance, earth fault, over voltage, under voltage respectively. n4. auto operation system: the panel should be fitted with an auto operating system comprises of 1 no. delay timer and 1 no. time switch to set the time of motor running ( in auto mode only ) . n5. automation: the panel should be fitted with an automation system in which the tripped motor tripped due to power failure or by the protection device, should restart automatically after the resumption of power or rectification of voltage related faults. but in case of current and mechanical faults the motor should restart only after pressing the manual reset button thus providing complete protection as well as complete automation simultaneously. n6. bimetal overload relay: a bimetal over load relay of suitable range should be fitted with in the starter as an extra protection to protect the motor in case of failure of fault analyzer with an isolation / bye pass switch to bye-pass the fault analyzer. n providing and fitting of 1 no 250 amp hrc type main switch. the job includes mounting of main switch on the wall having proper alignment with the lt control panel. making of power connections from existing 3.5 core armoured aluminium cable from transformer to incoming of main switch after proper thimbling. complete job including cost of main switch, thimbles, labour charges etc. complete job. n 1 one job