PROVN OF ADDL RMU (RING MAIN UNIT) WITH 1 INPUT AND 2 OUTPUT AFTER CUBICAL AT DRNC UNDER GE (CENTRAL) BANGALORE

Amount

Supply, install, testing & commissioning of outdoor type, welded stainless steel tank with IP-67 protection for SF-6 Tank and IP 54 protection for outdoor enclosure, One Side extensible type compact RMU, (DAS specification compact RMU), 12kV, 630 Amps, 21KA (VCB SF6 enclosed) as per IEC-62271, 4 Way RMU, i.e. 2 incoming + 2 outgoing 630 A with copper Bus Bar consisting of 04 No’s SF6 insulated Motorized VCB of 11KV, 630Amp with overload and earth fault protection, capacitive voltage indication, Manometer, cable boots for VCB and castle key interlocked and necessary PCC foundation work including providing MS channel and MS angle as per manufacturer recommend along with bottom cable entry and front cable termination of suitable single run 3core 400sqmm HT cable with following specifications complete all as specified and as directed.

(i) A01& A04 as incoming VCB, A02 & A03 as Outgoing VCB with three position isolator /earthing switch, bus bars, interlocking earth bars and stored spring energy mechanism. (ii) Stored energy mech for manual operation - 01 No. (iii) Set of 03 No’s Ring core protection & metering Dual core CTs of suitable ratio as per feeder load, 2.5 VA, Class 1.0- 01 set in each breaker. (Transformer rating 2MVA) Capacitive voltage indication fixed type VPIS 9- 15KV - 01 No in each breaker

(iv) Control voltage motor 24 DC-01 Nos each Breaker (v) Self powered OC+EF Protection relay type as per manufacturer recommended with rechargeable - 01 No in each breaker (vi) Master trip relay-01Nos each breaker (vii) Space heater (230VAC)- 01 Nos each breaker.

(viii) One No Potential Transformer (PT) three phase, dry type (resin cast) fixed type 11 KV/110 VOLTS, 25 VA burden, accuracy class 1.0 (ix) Multi function meter for each breaker. (x) Under/over Voltage Relay each breaker. (xi) Impluse withstand voltage: To earth and between phases: 75KV Insulation level: -Power frequency 1 min:28 Kv

(xii) Enclosure: CRCA sheet powder coated with Siemens grey shade IS 632 Front Cover: CRCA sheet powder coated with Siemens grey shade RAL 7035 Cable Cover: CRCA sheet powder coated with Siemens grey shade RAL 7035

(xiii) Cable bushings interface C (400 bolted) , 630A (xiv) Bushings outside cone interface C for connection of external busbars 2x12V DC battery + charger scheme R-Y-B phase indication. Additional equipment delivered separately or mounted in respective panel. Set of coupling bus bars along with suitable coupling kit - 01No, Operating Handle - 01 No

Supply & laying XLPE insulated,screened, PVC bedded galvanised steel strip or wire armoured ,electric power cables heavy duty with aluminium conductor, 11000 Volts grade ( earthed) of cross sectional area 3 Core 400 Sqmm complete etc all as directed

M&F cable jointing kit for 11 KV (Earthed) grade XLPE cable for Indoor end termination cold shrinkable type joint complete with jointing material and accessories suitable for 3 core 400 Sqmm XLPE cable including testing after jointing complete all as directed.

M&F cable jointing kit for 11 KV (Earthed) grade XLPE cable for straight through termination cold shrinkable type joint complete with jointing material and accessories suitable for 3 core 400 Sqmm XLPE cable including testing after jointing complete all as directed .

Excavation in trenches in soft / loose soil n . exc 1.5 mtrs wide and not exceeding 1.5 mtrs depth for taking out / laying of under ground cables / erection of poles complete all as directed .

Returning, filling in, including spreading levelling and well ramming in layers not exc 25 cm with excavated soil complete all as directed.

Removing surplus spoil to a distance not exc 50mtrs away and depositing and directed at a level not exc 1.5 mtrs above the starting point complete all as directed .

Sand coarse filling in trenches obtained from local river for cushioning of UG cable all as complete all as directed .

Supply and lay rainforced precast conceate cable cover, Class HV type 1 with peak size 300mmx180mmx40mm complete all as directed .

Supply and spread stone metal graded aggregate of size 40 mm at transformer yard complete all as directed by Engr-in-Charge.

M&L for providing trenchless bore using using ultra sounding technique and necessary machine bore of pipe size 150 mm dia suitable for 0.4 mpa working pressure mechanical numatic drilling equipment for passing GI pipe line upto 100 mm dia under the existing bituminous/WBM road/PCC hard standings, depth range not less than 1.0 mtr and upto 1.5mtr and making good to the distrubed surfaces of road to match with its existing specifications complete all as directed . by engr-in-charge at site. Note : 1. Quoted rates deems to be inclusive of transportation charges of Drilling machine, connected accessories and passing pipe through bore complete with required accessories. 2. Pipe rate shall be included in quoated rate.

Earthing complete with Galvanised Steel earthplate of size 60x60cmx6.3mm thick electrode and 32x6mm GI strip as earth lead, buried directly in ground (earth pit not less than 2.25m deep below ground level) with top edge of the plate not less than 1.5m below ground level, connected to 32x6mm earth strip by means of nuts, bolts, check nuts and washers of GI all as shown in electrical plate No.5 of SSR Part-I, connected to earth test terminal point all as specified or as indicated including testing on completion (Rates inclusive of neccessary excavation in any type of soil, earth work, PCC pit, CI cover, funnel with watering pipe, suitable size of light grade GI Protection pipe for earth strip in ground etc. all as required at site for complete earthing) complete all as directed .

NATIONAL ENGINEERING CORPORATION

Lucky Enterprises

M/S - KRUPA ELECTRICALS

Sai Ram Builders