REPAIR AND MAINTENANCE OF ELECTRICAL BREAKDOWN INCL FAULT DETECTION LOCALIZATION AND RECTIFICATION IN HTLT UNDERGROUND NETWORK AND OH CONDUCTOR REPLACEMENT TO 11 KV HT CABLE AT CARIAPPA VIHAR 105 TA 1 WEC EETSU DAS POLO GROUND TODAPUR KANDHAR LINE EM

Amount

Excavation in trenches not exc. 1.5 m wide and not exc 1.5 mtr deep in soft/loose soil for laying / taking up/ taking down of cables and getting out and levelling of bottom suface to required level all as specified and directed by Engineer- in- Charge.

Returning filling in,. Including spreading, levelling,. Watering and well ramming soil in layers not exceeding 25 cm thick all as specified and directed.

Removing excavated material (ie soil) from site to a distance n. exc 50 mtrs away and depositing where directed at a level n. exc. 1.5 mtr above the starting point all as specified and directed by Engineer-in-Charge.

Material and labour for river washed and screened, dry sand for filling in trenches below and around underground cables for cushioning of cables etc, complete all as specified. Note : Measurement shall be taken after punning down.

S&F sub class B bricks having minimum compressive strength 75 Kg/ Sqcm laid in trenches for cable protection etc complete all as directed by Engineer-in-Charge.

All as per srl item No 5 here-in-before but using old bricks obtained under srl item No1 here in before.

Supplying and laying un-reinforced precast concrete cable cover, class HV, type 1, flat size 300mmx 180mm x 40mm.

All as per srl item No 7 here-in-before but using old un-reinforced precast concrete cable cove obtained under srl item No 1

Supply, laying, jointing, testing and commissioning in replacment LT underground cables 1100 volts grade, PVC insulated XLPE and PVC sheathed, heavy duty armoured, with multistranded aluminium conductors, IS-1554 marked, laid in trenches complete all as specified and directed. Cables of the following sizes:- Note Excavation, earth work ,cable protection , sand fillings , cable joint shall be measured and paid separately.

16 Sqmm 4 core

25 Sqmm 4 core

35 Sq mm 3.5 core.

50 Sq mm 3.5 core.

70 Sqmm 3.5 core

95 Sqmm 3.5 core

120 Sqmm 3.5 core

185 Sqmm 3.5 core

240 Sqmm 3.5 core

300 Sqmm 3.5 core

Supplying, laying, jointing testing and connecting in replacement XLPE insulated, screened, PVC bedded, galvanised steel strip or wire armoured, electric power cable (heavy duty) with multistranded aluminum conductors, 11 KV grade, IS 7098 marked, suitable for HT 11 KV(E) system, laid in trenches fixed to pole, including jointing & testing complete all as specified and directed of following sizes Note :- Excavation, earth work ,cable protection , sand fillings , cable joint shall be measured and paid separately.

95 sqmm 3 core.

120 sqmm 3 core.

185 sqmm 3 core

240 sqmm 3 core

Testing the cables with high voltage DC testing machine and locating the fault in the cables by fault locating machine to pin point exact position of fault, disconnecting faulty 11 KV HT cables of different sizes from both ends, removal of Fault, Re-connections and testing of cables after removal of fault complete all as specified and directed. Note: (a) 11 KV HT cable & joints shall be measured and paid for seperately under respective items of schedule. (b) Retrieved old serviceable cable cover/bricks will be laid in trenches for cable protection. If extra PCC cover/bricks and sand required at site shall be measured and paid separately under respective items of BOQs. (c) Excavation and earth work will be measured and paid for seperately under respective items of schedule.

All as per item Ser No 11 here in before but 1100 Volt LT cables

Taking out faulty underground 1100 Volt LT cable of different sizes by excavation and removing bricks of any size and relaying in the same trenches or re-routing after rectification of fault or replacing faulty portion of cable with new cable and removing of surplus soil and using new bricks as required. Note: (a) 1100 Volt LT cable & joints shall be measured and paid for seperately under respective items of schedule. (b) Retrieved old serviceable bricks will be laid in trenches for cable protection. If extra bricks and sand required at site shall be measured and paid separately under respective items of BOQs. (c) Excavation and earth work will be measured and paid for seperately under respective items of schedule.

All as per item Ser No 13 here in before but 11000 Volt HT cables.

Material and labour disconnecting faulty /burnt end or portion of cable by removing the cable from loop including necessary excavation & earth work , suitable size of thimble LT tap , relaying and reconnecting the cable by removing faulty/burnt portion of cable and preparing fresh terminals for 25 Sqmm 3.5/4 core to 240 Sqmm 3.5 core of LT cable to LT Panel/pole/main switch complete all as directed.

Supply, fixing and testing LT straight through joint heat shrinkable type with jointing kit suitable for cable PVC/XLPE insulated armoured heavy duty aluminium conductor 1100 Volts grade complete all as directed for the following sizes :-

16-50 Sqmm x 3.5 core/ 4 core

70-150 Sqmm x 3.5 core

185 -240 Sqmm x 3.5 core

Supply and fix Cable jointing kit for 11 KV (Earthed) grade cable for indoor termination heat shrink type joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of following size :-

95 Sqmm 3 core.

120 Sqmm to 185 Sqmm, 3 core.

240 Sqmm to 300 Sqmm 3 core

Supply and fix Cable jointing kit for 11 KV (Earthed) grade cable for outdoor termination heat shrink type joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of following size :-

95 Sqmm 3 core.

120 Sqmm to 185 Sqmm, 3 core.

240 Sqmm to 300 Sqmm, 3 core.

Supply and fix Cable jointing kit for 11 KV (Earthed) grade cable for straight through heat shrink type joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of following size :-

95 Sqmm 3 core.

120 Sqmm to 185 Sqmm, 3 core.

240 Sqmm to 300 Sqmm 3 core

Boring of hole under road/pavement/hard standing or any other situation by mannual means and including GI pipe 100 mm bore (medium grade) and making good both ends all specified and directed

Supply and lay GI pipe light grade in replacement as cable protection laid on trench/floor, fixed on pole/wall etc of following sizes all as specified of size:-

100 mm dia

80 mm dia

50 mm dia

Supply and laying as replacement in sub station fixing 3.3 KV to 11 KV insulating mat of size 5mtr x 1 mtr x 2.5 mm thick specification as per IS-15652 2006

Supply installation & commissioning in replacement of 24V/40A Float Cum Boost Battery Charger unit including battery bank comprising 02 Nos of 12 Volts-100 AH sealed maintenance free battery. The CCCV battery charger consisting of copper wound, air cooled transformer, 01 Set single phase full wave bridge rectifier consisting of diodes and SCRs, liberally rated mounted on heat sink and complete with resistor/condenser network for surge supperssion . During auto float mode automatic changeover shall take place from float mode to boost mode and vice versa, 01 Set of solid state constant potential controller to stabilize the DC output voltage of the float cum boost charger, 01 No electronic controller , DC digital ammeter , DC digital voltmeter, Potentiometer , DC, MCB for reverse battery protection . The charger should have alarm annunciation with visual and audible alarm with manual reset facility for fuse fail alarm. Float cum boost battery charger and DC distribution board shall be housed in powder coated sheet steel cubicle with panels of 1.6mm thickness , louvers for ventilation , gland plate will be provided for cable entry from bottom . The battery charger shall be divided into two compartments. The upper compartment shall house the battery charger & DCDB with all necessary controls. The lower compartment shall be suitable for housing the batteries. Tech specification shall be as under:-

(a) Input working voltage-180 -270 Volts (b) Nominal Input Voltage - 230 V , AC , 50 Hz,1 (c) On load input power factor - > 0.8 (d) On load unit watt efficiencies-> 80% (e) No load losses of complete charge-< 10% (f) Ripple contents on the load (RMS)= 1% to 5% (g) Over load - 110% for 30 minutes and will give visual indication for over load condition. (h) Boost charging - 2.4 V/Cell . (j) Float charging -2.15 V/Cell (k) Float cum boost charging-Automatically changes from one state to another state as per battery condition and will give the visual indication for either float or boost based on charging mode. (l) Reverse polarity -No damage will caused . A visual indication for reverse polarity will appear with an audio alarm. (m) Short circuit-MCB protecton provided. Make of battery charger. Statcon/Sinetrac/Amar Raja Make of batteries. Exide/Amaron/Okaya

Earthing complete with galvanised steel earth plate electrode 60 cm x60 cm x 6 mm thick buried directly in ground ,(Earth pit not less than 2.25 meter deep below ground level) with top edge of plate not less than 1.5 meter below normal ground level ,connected to and including galvanised iron earth wire 32 X 6 mm by means of nut, bolts, check nuts and washers of galvanised iron or steel and provision of charcoal dust and common salt packed all around the earth plate including necessary excavation and earth work in any type of soil and testing complete all as specified and directed and shown in electrical plate number 3 of MES SSR part-I(2009) . Note : (a) The unit rates quoted against this item shall be deemed to include the cost of excavation and earth work in any type of soil, common salt & charcoal dust in alternate layers, PCC 1:3:6 as in pit, precast RCC 1:2:4 type B-1 with necessary reinforcement as in cover & frame for pit, funnel, watering pipe 20 mm bore GI pipe light grade, protection pipe 40 mm bore GI pipe medium grade etc. (b) The quoted rates shall also deemed to include the cost of earth test point and earth strip/GI lead wire and protection pipe upto 7.5 meter beyond the earth plates electrode.

M&L Brick work with sub-class 'B' bricks, straight or curved on plan exc 6 m mean radius, built in cement mortar 1:6 complete as specified and directed.

M&L Rendering 15mm thick on fair faces of brick work or concrete surfaces in cement mortar (1:4) finished fair and even without using extra cement complete as specified and directed.

M & L for PCC 1:3:6 type C-2 (using 40 mm gradded aggregate) for foundation, filling and mass concrete etc complete all as specified and directed .

M & L for cement concrete type B-2, 1:2:4, 75 mm thick (using 40 mm gradded aggregate) for floors and paving etc complete all as specified and directed.

S&F Cross arms, bracings, supports, clamps and back plates fabricated from structural steel sections including nuts, bolts, washers,welding, bending cold or hot,drilling holes for bolts, in any shape or size as indicated or directed and inclusive of one primer coat, one under coat and one finishing coat of paint.

Dismantling of fencing wire mesh of any type and S&F 4 mm thick mild steel wire 75 x75 mm mesh up into mattressess or cages, lapped wired and fixed in position including welded for fencing to grid complete all as specified and directed.

M & L for 2 coat of synthetic enamel painting over a coat of red oxide to steel surfaces including preparation of newly surface complete all as specified.

S&F in replacement ACB 4 pole, 800 Amp, 50 KA, 415 Volt AC Horizontal draw out type , front operated with Micro processor based LCD protection release for adjustable over current, short circuit and earth fault protection

Supplying fabrication and installation stainless steel frame work for sign boards (grade of steel 304) made of hollw tubes, rectangular/square sections, plates etc including welding grinding, buffing and making crvature (wherever requried) and fitting the same with necessary stainless steel nuts and bolts complete, including accessories required for fixing & stainless steel dash fasterners, stainless steel bolts etc of required size, on the top of floor or theside of the waist slab with suitable arrangements as per approval of Engr-in-charge. Note: Nuts, bolts and dash fasteners and hydrulic machine labor required for installation shall be inclusive & shall not be paid seperately.

Manufacturing, supplying, installation of full cube poly carbonate micro prismatic type reflactive boards confirming to IS XI of ASTM, made of 4mm thick substrate of aluminum composite panel having 0.50 mm tick skin of aluminium on both sides. Both sides to be covered with full cube poly carbonate prosmatic reflective sheeting confirming to proposed type XI ASTM with coloured shceme, including borders as per IRC 67-2001. The aluminium composite panel shall be suitable fixed on top, bottom and sides of stainless steel frame work including supplying and fixing of HIgh Intensity Plastic (HIP) letters, on both side of board in english language, the matter shall be provided by Engr-in-charge, not exceeding 30 cm height. Make 3M or Avery Denni.

Excavation in post holes (or similar holes) each n. exc 0.5 cum, getting out, returning filling in and ramming earth or broken rubble mixed with earth around in layer not exc 25cm in any type of soil, making good to surfaces and removing the surplus soil in low lying areas, complete all as specified and directed.

Dismantling posts or struts (wood,steel or RCC) any section ,including taking out embedded portion and making good disturbed ground posts embedded in natural ground complete all as specified and as directed.

All as per Sr Item No 36 here in before but posts embedded in concrete etc complete all as specified and as directed..

Material and labour for sprading of stone aggregate of nominal size not more than 25mm under 4/6 pole HT structure /surounding area of outdoor RMU manually without damaging any equipments, cable or parts , spreading & levelling of finished gravel uniformaly in layers n. ecc. 15 cm thick watered and rammed to true surface all as specified and directed

Supply installation & commissioning in replacement of 12 Volts-100 AH sealed maintenance free battery suitable for solar street light complete all as specified and directed by Engr-in-charge.

Material and labour in replacement Retro Reflective installation sign boards of size 5 feet x 4 feet fabricated out of 16 gauge MS sheet frame duly welded/riveted with MS square pipe of size 25mm x25mm at height 2.00 meter above ground level on stainless steel heavy duty pipe of size 50mm bore embaded 60 CM in PCC 1:2:4 type B 1 block of size 45cmx45cmx60cm including necessary excavation and earth work .The steel portion of the board shall be painted in stove enameled paint and the front & back of the frame shall be overall sheathed with blue colour base painter adhesive tape. The wiriting matter will be in English language on both sides with reflective adhesive painter tapes as directed by Engineer -in-charge.

Note : (i)contractor should provide 50 % of the material as listed above within 15 days of the placing of work order and shall be verified by the Eng-in-charge.

Vijay Electricals

Rajindera Enterprises

mayur enterprises

Water Power Engg. Enterprises

MV Engineers And Contractors

Ridhi engineers and builders

DS CONSTRUCTION

M/s Dharya Enterprises