COMPREHENSIVE MAINTENANCE TO LT DISTRIBUTION INDOOR/OUTDOOR PANEL INCLUDING EARTHING SYSTEM AT NAMKUM, KHOJATOLI AND LPH AREA UNDER GE RANCHI

Amount

Excavation in trenches n. exc 1.5 m wide & n. exc 1.5 m in depth for laying under ground cables/erection of pole and getting out in hard/dense soil, complete all as specified and directed.

Returning, filling in including spreading, leveling, watering and well ramming in layers not exceeding 25cm thick, complete all as specified and directed.

Removal of excavated surplus material (Soil) to a distance n.exc 50 mtr and depositing where directed at a level n.exc 1.5mtr above the starting point complete all as specified and directed.

S&F GI pipe light grade100 mm dia as protection to cable along the pole / across road crossing/through culvert/passing through ceiling/walls with necessary clamps-02 Nos (Flat iron 50x06mm) with, nuts and bolts, complete all as specified and as directed.

S&F MCCB four pole 415 volts 50 Hz 630 amps of capacity 25 KA with thermal magnetic release complete with all accessories. Make :Havells/Legrand/Schnider/HPL

S&F MCCB four pole 415 volts 50 Hz 250 amps of capacity 25 KA with thermal magnetic release complete with all accessories. Make :Havells/Legrand/Schnider/HPL

S&F MCCB four pole 415 volts 50 Hz 400 amps of capacity 25 KA with thermal magnetic release complete with all accessories. Make :Havells/Legrand/Schnider/HPL

S&F MCCB four pole 415 volts 50 Hz 100 amps of capacity 25 KA with thermal magnetic release complete with all accessories. Make :Havells/Legrand/Schnider/HPL

Earthing complete with galvanised steel earth electrode plate of size 600x600x6mm thick, buried directly in ground (earth pit not less than 2.25m deep below normal ground level) with top edge of the plate not less than 1.50m below normal ground level, connected to galvanised iron earth strip 32x06mm up to test point with suitable GI nuts/bolts and brazed properly up to main board including earth pit in cement concrete 1:2:4 type B-1, precast RCC cover in 1:2:4 reinforced with expanded metal, with suitable handle, excavation and earth work in any type of soil and including medium grade GI watering pipe 15mm bore with funnel wire mesh and medium grade GI earth wire protection pipe 50mm bore up to main board complete as shown in electrical plate no 3 of MES schedule Part-I 1991, connected to earthing testing point including taking out existing unsv earthing complete all as specified and testing on completion, complete all as specified and directed.

Taking down old unserviceable and Supply , installation testing and commisioning of LT MCCB Panel Board of suitable size cubical weather, dust and vermin proof fabricated out of CRCA sheet steel suitable size thickness complete, MCCB panel board should be manufactured and supplied by ISO 9001 certified OEM of MCCB. The Busbar system should be duly type tested at NABL lab for short time with stand current of 1 Sec. it should be suitable for wall or floor mounting with Double door option, Panel board enclouser should be robust construction and corresion resistance powder coated with seven tank process with locking arrangement fixed on suitable size foundation 60 cm above the GL by providing angle iron of size 50 x 50 x 06 mm welded on all the four corners embedded in PCC 1: 2: 4 using 20 mm graded stone aggregate up to 30 cm including electrical connection with lugs & glands complete comprising the the following :- Aluminium busbar of high conductivity 630 Amps capacity 4 wire system - 01 set MCCB, 400Amps, 35 KA, 04 Pole-01 No (Incoming) MCCB, 250Amps, 35 KA, 04 Pole-02 Nos (Outgoing) MCCB, 200Amps, 25 KA, 04 Pole-02 Nos (Outgoing) MCCB, 100 Amps, 25 KA, 04 Pole-02 Nos (outgoing) Digital type panel mounted Voltmeter 0-500 volts. Digital type panel mounted Ampr meter 0-500 Amps with CT's. Three phase Indication lamp LED type, - 01 Set {Set of three Nos (RYB)} Digital type frequecy meter, 50 Hz, panel mounted Note: All Internal connection of MCCB from BUS Bar made By using copper busbar of rated Capacity

Taking down old unserviceable and Supply, installation testing and commisioning of LT MCCB Panel Board of suitable size cubical weather, dust and vermin proof fabricated out of CRCA sheet steel suitable size thickness complete, MCCB panel board should be manufactured and supplied by ISO 9001 certified OEM of MCCB. The Busbar system should be duly type tested at NABL lab for short time with stand current of 1 Sec. it should be suitable for wall or floor mounting with Double door option, Panel board enclouser should be robust construction and corresion resistance powder coated with seven tank process with locking arrangement fixed on suitable size foundation 60 cm above the GL by providing angle iron of size 50 x 50 x 06 mm welded on all the four corners embedded in PCC 1: 2: 4 using 20 mm graded stone aggregate up to 30 cm including electrical connection with lugs & glands complete comprising the the following:- (a) Aluminium busbar of high conductivity 630 Amps capacity 4 wire system - 01 set (b) MCCB , 250Amps, 35 KA, 04 Pole-01 No (Incoming) (c) MCCB , 200Amps, 35 KA, 04 Pole-01 Nos (Outgoing) (d) MCCB , 100 Amps, 25 KA, 04 Pole-02 Nos (Outgoing) (e) Digital type panel mounted Voltmeter 0-500 volts. (f) Digital type panel mounted Ampr meter 0-500 Amps with CT's . (g) Three phase Indication lamp LED type, - 01 Set {Set of three Nos (RYB)} (h) Digital type frequecy meter ,50 Hz, panel mounted Note:- All Internal connection of MCCB from BUS Bar made By using copper busbar of rated Capacity

Supply and installation of RMU 11KV, 630 Amps 20KA complete outdoor unit with IP 66 protection ectensible 3way LBS floor mounted with internal copper bus bar consisting of 1 nos incomming fixed manual load break switch and 02 nos outgoing fixed manual load break switch.All the live parts bus bars LBS connection should be enclosed in one tank (minimum 3 module) to avoid multiple inter connections & sealed for life robotily/ manully welded non magnatic and non ferrite grade stainless steel tank (SS-304) not less than 2 mm thick having IP 67 protection filled with gas as insulation with leakage rate less than 0.1% per year tested as per IEC 62271-200 with complete accessories such as terminal Boots VPIS cable support all front cable termination mechanical indication for load break switch ON/OFF bushings bolted type top mounted outside the tank for connection of external bus bar compatable to replace at site etc complete all as specified and directed.

Supply and laying or fixing or passing through pipe testing and commissioning of 11000 Volts earthed 'Heavy duty" PVC sheathed armoured cable HT, XLPE insulated aluminium conductor multi stranded served with inner sheating of PVC tape armored with galvanised steel wire or tape and overall PVC sheathed of size 95Sqmm earthed nominal cross sectional area 3.0 core confirming to IS specification.

Earthing complete with galvanised steel earth plate electrode 600x600x6.3mm thick burried 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 galvanised earth lead GI wire 4mm dia by means of bolts, nuts, check nuts and washers of GI or steel all as shown in electrical plate No 5 including charcoal dust,common salt, 20mm GI medium grade watering pipe, 15mm bore light grade earth lead protection pipe upto test point,funnel with wire mesh, PCC pit 1:2:4 type B-I using 20mm graded stone aggregate with angle iron frame, 40mm thick RCC cover with 8mm for steel bar @100 C/C both way complete all as specified and directed.

Supply and laying or fixing or passing through pipe testing and commissioning of 1100 Volts grade 'Heavy duty" PVC sheathed armoured cable LT, XLPE insulated aluminium conductor multi stranded served with inner sheating of PVC tape armored with galvanised steel wire or tape and overall PVC sheathed of size 150Sqmm nominal cross sectional area 3.5 core confirming to IS specification. Make : HAVELLS/GLOSTER CABLE LTD /CCI /NICCO/Finolex

S&F aerial bunched cable 11KV HT grade having three power coreX95 sqmm cable & one neutralX70 sqmm twisted around a high strength Aluminium Alloy bare wirewhich also serve as earth cum neutral wire with black coloured XLPR insulated conforming to IS8130/1984, IS-398 (Part-IV) /1979 and IS-14255/1995. Make- Havells/CCI/Kalinga/Finolex

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