| 1 | MAIN L.T. PANEL Design,Manufacturing,Supply,Commissioning&TestingofMainLT Panel. The panelwill be totally enclosedtypewith,free standing,floor mounted, indoor duty, dust & vermin proof, , front operated, electrical panel fabricated from 2 mm thick M.S. Sheet as per specifications& drawing laid in this document and will be complete with the main and auxiliary bus bars,ammeter,ammeterselectorswitch,voltmeter,voltmeterselector switch,indicationlamps,CT\"s,protectionMCB,interconnectionwiring, earth bus and will be powder coated finish with 50 micron thickness. The Main LT Panel shall use all draw out type breakers suitable for 415 V AC, 3 phase, 50 Hz, 3 phase 4 wire supply system. The panel shall have AMF facility to achieve electrical interlocking, synchronizing, buscoupler switching, auto operation of incommer and bus coupler, auto start of D.G. Sets, auto D.G. running by pre set timing, auto changeover etc and having following incomming and outgoing Air Circuit Breakers, FSU\"s as per the drawing and specification.interlocking,buscoupler switching, auto operation of incommer and bus coupler, auto start of D.G. Sets, auto D.G. running by pre set timing, auto changeover etc and having following incomming and outgoing Air Circuit Breakers,FSU\"s as per the drawing and specification.Eachincomingbreakerwill have microprocessorbased releases and all outgoing breaker will have minimum electrostatic releases or mention as mention in BOQ. The Panel will be made as per detailed specifications& drawingsformingpartof thisdocument.Faultlevelof panel shallbe35 MVA INCOMING 1 Nos. 630 Amp FP ACB, 1 Nos. 400 Amp FP ACB, 2 Nos. 160 Amp FP MCCB BUSBARS 1 Nos. 630 Amp TPN busbars of aluminium alloy as per SLD 2 Nos. 630 Amp TPN busbars of aluminium alloy as per SLD. OUTGOING 2 Nos. 200 Amp FP MCCB, 4 Nos. 125 Amp FP MCCB , 1 Nos. 100 Amp FP MCCB, 7 Nos. 63 Amp FP MCB, 3 Nos. 40 Amp FP MCB, 6 sets of multifunction meter with parameter current, voltage, KWH, KVAH, Powerfactor on incoming from transformers. 6 Sets of phase indicating lights (RYB) with protection fuses (one set for each incoming breaker). 6 Sets breaker \"ON\" & \"OFF\" indicating lamp (one 1 Nos. set for each incoming breaker). 6 Sets auto trip indicating lamp.Note: All outgoings should have ammeter and RYB indications with backup MCB as indicated in single line diagrams. RELAYS AS PER SLD NS |
