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| 1 | Dismantling the existing entire LT panel alongwith switchgears ACB\"s, MCCB\"s, meters CT\"s, busbar including disconnection of LT UG cable and taking out the panel from station complete all as specified and directed. |
| 2 | Supply, installing, testing & commissioning, factory made and tested, LT panel board, indoor type, platform mounted, suitable for 415 volts 3 phase 4 wire, 50 Hz AC supply system, having bus bar chamber with insulated copper bus bar 4800 Amps (3 Ph x 4800 Amps + 01 No x 4800 Amps) rating installed on porcelain insulators. The panel shall be dust and vermin proof, IP 56 class protection and made of 2 mm CRCA sheet and 50 x 50 x 6mm thick angle iron frame work, powder coated finish over one coat of red oxide primer outside and two coats of red oxide primer on inside, front / back opening type, with aprons for cable entry andfixing 02 Nos danger notice plate of |
| 3 | size 20cm x 15cm with letter, figures and conventional skull bones in signal red colour and fixed front & back door LT panel etc., with voltage and danger indicated in Hindi & English with double door shutter and locking arrangement internal wiring with PVC insulated,stranded copper conductor, FRLSH cables, IS-694 marked of adequate size but not less than 4 Sqmm. The platform shall be as per site requirement including connections of all outgoing / in coming existing cables of size 25 to 400 sqmm by drawing / digging out cable from loops in trenches / ductsoutside the building inclusive of necessary excavation and earth work |
| 4 | as required and relaying the cables with retrieved bricks and providing new sand cushioning and crimping suitable size aluminium lugs for terminal connections of cables, necessary PCC foundation / brickwith plastering to the cable duct / wall damaging area, all outgoing feeders various feeders shall be indicated by 50 mm size letters in synthetic enamel white paint and bus coupler connected as per 4800 Amps bus bar same size with inter linking connection including supply, laying, end joint kit / jointing, testing & commissioning LT underground |
| 5 | cables, 1100 volts grade, XLPE insulated and PVC sheathed, heavy duty armoured with multistranded aluminium conductors, IS-7098 300 sqmm 4 core as per site required quantity for new connection ACB to ACB inter connection with complete all as specified and as directed by Engineer-in-Charge.The scope of work includes the following items: Note: LT panel board should be as per IS/ICE 61439 - Part I & II type test certificates for 4000 Amps with breaking capacity not less then 65 KA. Panel builder should submit all certificates before executing the job. |
| 6 | 1. Incoming: -(i) Air Circuit Breaker 3200 Amps, 4 pole, 4 pole, 100% Icu, The Air Circuit Breaker shall 4 pole, 415 volt, 3 phase, 50 Hz AC front operated with microprocessor-based LCD protection release for adjustable over current, short circuit and earth fault protection with ZSI.The breaker shall be with fully rated neutral & have minimum breaking capacity of 50KA (RMS) symmetrical. Designed operational voltage should be 690 V. The ACB should have Ics = Icu = Icw for 1 sec. for short circuit breaking capacity and pre-overload, overload & over-temperature protection feature with 4 NO/4 NC auxiliary contacts. |
| 7 | ACB shall also confirm to IEC 60947 / IS-13947 / Part-II / 19939 latest version). Protection release should have display with inbuilt battery back-up. Breaker should have last 20 tripping detail memory complete - 02 Nos.(ii) Ammeter Digital type, CT operated 0-3200A range - 02 sets (with selector switch and CT).(iii) Volt Meter Digital type 0-500 V range - 02 Nos (with selector switch).(iv) Indicating lamp LED type 240 V 50 HZ AC supply set of three colour (RYB) - 02 sets. |
| 8 | (v) Indication lamp LED type 240 V 50 HZ AC supply one set of two colour (Red and Green for ON/OFF indication of ACB) - 02 sets.2. Outgoing: -(i) Air Circuit Breaker 1600 Amps, 4 pole, 100% Icu, the Air Circuit Breaker shall 4 pole, 415 volt, 3 phase, 50 Hz AC front operated with microprocessor-based LCD protection release for adjustable over current, short circuit and earth fault protection with ZSI. The breaker shall be with fully rated neutral & have minimum breaking capacity of 50KA (RMS) symmetrical. Designed operational voltage should be 690 V. |
| 9 | The ACB should have Ics = Icu = Icw for 1 sec. for short circuit breaking capacity and pre overload, overload & over-temperature protection feature with 4 NO / 4 NC auxiliary contacts. ACB shall also confirm to IEC 60947/IS-13947 / Part-II / 19939 latest version). Protection release should have display with inbuilt battery back-up. Breaker should have last 20 tripping detail memory complete- 04 Nos. |
| 10 | (ii) Air Circuit Breaker 1000 Amps, 4 pole, 100% Icu, the Air Circuit Breaker shall 4 pole, 415 volt, 3 phase, 50 Hz AC front operated with microprocessor-based LCD protection release for adjustable over current, short circuit and earth fault protection with ZSI. The breaker shall be with fully rated neutral & have minimum breaking capacity of 50KA (RMS) symmetrical. Designed operational voltage should be 690 V. The ACB should have Ics = Icu = Icw for 1 sec. For short circuit breaking capacity and pre overload, overload & over-temperature protection feature with 4 NO/4 NC auxiliary contacts. |
| 11 | ACB shall also confirm to IEC 60947 / IS-13947 / Part-II / 19939 latest version). Protection release should have display with inbuilt battery back-up. Breaker should have last 20 tripping detail memory complete - 01 No. |
| 12 | (iii) MCCB 4 pole, 400 Amps,breaking capacity 36 KA, 415 V, 50 Hz with OL, SC, EF protection, 100% Icu, conforming to IEC-60947 / IS-13947 / Pt.II / 1993 - 09 Nos alongwith Spreader terminals.(iv) MCCB 4 pole, 250 Amps, breaking capacity 36 KA, 415 V, 50 Hz with OL, SC, EF protection, 100% Icu, conforming to IEC-60947 / IS-13947 / Pt.II / 1993 -11 Nos alongwith Spreader terminals. |
| 13 | (v) MCCB 4 pole, 160 Amps, breaking capacity 36 KA, 415 V, 50 Hz with OL, SC, EF protection, 100% Icu, conforming to IEC-60947 / IS-13947 / Pt.II / 1993 - 01 No alongwith Spreader terminals.(vi) MCB TPN 63 Amps \"C\" curve - 02 Nos.(vii) Ammeter digital type, CT operated 0-1600 range - 04 sets / 0-1000 Amps - 01 set / 0-400 Amps -09 sets / 0-250 Amps - 11 sets / 0-160 Amps - 01 set (with selector switch and CT). |
| 14 | (viii) Volt Meter Digital type 0-500 V range - 26 Nos (with selector switch).(ix) Indicating lamp LED type 240 V 50 Hz AC supply one set of three colour (RYB) - 25 sets (for each outgoing).(x) Indication lamp LED type 240 V 50 Hz AC supply one set of twocolour (Red & Green for ON/OFF indication of ACB) - 05 sets.BUSCOUPLER(i) Air Circuit Breaker 3200 Amps, 4 pole, 100% Icu, the Air Circuit Breaker shall 4 pole, 415 volt, 3 phase, 50 Hz AC front operated with microprocessor-based LCD protection release for adjustable over current, short circuit and earth fault protection with ZSI. |
| 15 | The breaker shall be with fully rated neutral & have minimum breaking capacity of 50KA (RMS) symmetrical. Designed operational voltage should be 690 V. The ACB should have Ics = Icu = Icw for 1 sec. for short circuit breaking capacity and pre overload, overload & over-temperature protection feature with 4 NO / 4 NC auxiliary contacts. ACB shall also confirm to IEC-60947 / IS-13947 / Part-II / 19939 latest version). Protection release should have display with inbuilt battery back-up. Breaker should have last 20 tripping detail memory complete - 01 No. |
| 16 | (ii) Ammeter digital type, CT operated 0-3200A range - 01 set (with selector switch and CT).(iii) Volt Meter Digital type 0-500 V range - 01 No (with selector switch).(iv) Indicating lamp LED type 240 V 50 Hz AC supply set of three colour (RYB) - 01 set.(v) Indication lamp LED type 240 V 50 Hz AC supply one set of twocolour (Red & Green for ON/OFF indication of ACB) - 01 set. |
| 17 | M&L for earthing with copper earth plate electrode of size 600 mm x 600 mm x 3mm thick buried directly in ground (earth pit not less than 2.25m deep below the ground level) with top edge of the plate not less than 1.5m below normal ground level, connected to the galvanised earth lead by means of bolts, nuts check nuts and washers of galvanised iron or steel using copper strip 32 x 6 mm as earthing lead connected to earthing test point all as specified or indicated including testing on completion including necessary excavation and earth work in soft / loose soil, returning filling, disposal of surplus soil, earth pit in PCC 1:3:6 type C1 using 20mm graded stone aggregate |
| 18 | pit, funnel, 20mm dia, 2.7 mtr long GI medium grade watering pipe, 40mm dia GI light grade earth lead protection pipe, CI frame and cover, wire, copper lugs etc., mesh, charcoal and common salt in alternate layer complete including removal of old unserviceable earth plates complete all as specified and directed by Engineer-in-Charge. |
| 19 | Providing and fixing 32 x 6mm copper strip on surface or in recess / inside cable trench for connections with supporting insulator fixed on wall from existing earth test point complete all as specified and directed. |
| 20 | M&L for painting with synthetic enamel paint of two coats of approved brand and manufacture of required colour to give an even shade on old surface complete all as specified and directed. |
