REPAIRS / REPLACEMENT OF HT CABLE, OH LINES, TRANSFORMER, HT SWITCHGEAR, CTS, PTS AND MISC WORKS AT RA AREA UNDER GE PULGAON

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 complete all as specified and directed.

Returning, filling in including spreading, levelling, watering and well ramming in layers not exceeding 25cm in hard/dense soil complete all as specified and directed.

Removing excavated material/soil to a distance not exceeding 50m and depositing where directed at a level not exceeding 1.50m above the starting point complete all as specified and directed.

Material and labour for sand cushioning with dry river sand in trenches for cushioning of underground cable line including spreading, leveling, well ramming complete all as specified and directed. Note : Punned thickness only shall be measured and paid seperately.

Supply and lay un-reinforcement precast concrete cable cover, class HV, type 1, flat of size 300 X 180 X 40mm for HT cable and laid dry in trenches over underground cables complete all as specified and directed.

Laying only old un-reinforced precast concrete cable cover, class HV, type 1, flat size 300mmx 180mm x 40mm obtained from excavation complete all as specified and directed.

Supplying, laying, jointing testing and connecting in replacement of old vintage 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, Cross sectional area 95 Sqmm, 3 core, laid in trenches fixed to pole/ Transformer/ VCB etc, including jointing & testing complete all as specified and directed. Note:- Excavation, earth work, cable protection, sand fillings, cable joint shall be measured and paid separately.

All as per item Sl No. 7.00 herein-before but Cross sectional area 120 Sqmm, 3 core complete all as specified and directed.

Material and labour for Off load centrifuging and dehyderation including filteration & cleaning of transformer oil by continuous circulation through dehyderation machine electric operated incuding testing of oil samples before and after dehyderation and filteration of oil. The dielectric strength should not less than 40 KV for one minute at 4 mm gap after filteration and dehyderation complete all as specified and directed. Note: (i) Oil samples are to be collected from top and bottom of oil tank and test results to be submitted for each sample before and after filteration. (ii) Transformer oil required for top up shall be measured and paid separatly under respective items. (iii) The contractor have to arrange the dehyderation machine and testing kit from his own resources without any extra cost.

Supply and topping up transformer oil of dielectric strength 50 KV at 4 mm gap in transformers of various cap installed in various locations complete all as specified and directed. Make :of Transformer oil: Power Oil / Indian Oil / Rinkyl /Apar / Savitha Notes : (i) New Transformer oil in the transformer will be filled only after filteration and dehydration of existing transformer. (ii) Transformer oil shall be supplied in sealed barrel with test result and test certificate.

Material and labour for opening of top cover by unscrewing nut, bolts and washers etc and taking out core assembly from tank by disconnecting from tap changer HT & LT side bushing stud to outside by dismantling the channel and disconnecting star delta connection of 63 KVA to 160 KVA capacity. After dismantling of Transformer and physical joint inspection of core coil assembly (removing all 3 limbs HV &LV winding from Core Assembly) washing of core assembly by hot oil for removing brunt carbon and copper particals and cleaning of complete top yoke by oil. reassemble of complete core assembly and core coil assembly providing new coils and new tap leads of tap changer including requisite insulation material. Re-tightening of top cover fixing of HV & LV Bushing and all related connections such as tap changer connection, WTI & OTI Connection and CT connection. Filling of oil, conservatior tank ready for final testing all as directed in presence of rep of MES Note: Coil, insulation and top up of new oil shall be measured and paid separately.

All as per item Sl No. 11.00 herein - before but 200 KVA to 315 KVA (11KV/433 Volts) complete all as specified and directed.

Material and labour for Rewinding of HV Coil with copper wire (DPC of same gauge and size), re-assembling of newly winded coil on core in position complete all as specified and directed.

Material and labour for re-insulation of secondary winding LV coil complete with new insulating material (Double paper covering insulation) including fixing the coil to its position complete all as specified and directed.

Supply and fixing in replacement HT Bushing porcelain with brass rods made out of superior quality brass complete with 8 Nos of nuts , 8 Nos of washers including necessary Rubber “O” rings / oil seals and gaskets for the transformers (as per the existing) of capacity from 63 KVA to 315 KVA complete all as specified and directed.

Repair /Replacement of the studs made out of brass, suitable size, (12/16/20mm) dia with bolts, washers, nuts, including insulators, for LT(LV) side complete all as specified and directed.

Repair/Replacement of the studs made out of brass, suitable size, (12/16/20mm) dia with bolts, washers, nuts, including insulators for HT(HV) side complete all as specified and directed.

Supply and fixing in replacement of Breather assy with vent pipe, new silica Gel for indoor/outdoor transformer capacity from 63 KVA to 315 KVA complete all as specified and directed.

Supply and fill in replacement of silica gel in transformer breather complete all as specified and directed.

Material and labour for servicing /testing of breaker/control panel including CT, PT and relays in control panel of VCB of capacity upto 630 Amps and rating 11 KV complete as details mentioned under:- (a) servicing of breaker :- (i) Adjustment of mechanism if required. (ii) Clean the circuit breaker to remove dust and dirt. The envelope of the vacuum interrupter and insulating materials shall be wiped with a clean cloth. (iii) Apply a small amount of oil to rotary sections, sliding surfaces, pins, coupling section, etc.use grease for the operating shaft and bearings, and machine oil for other parts. (iv) Check for rust and wear. (v) Check Spring Tension and putting of the Cluster Contacts. (vi) Visual check for rust and deformation. (vii) Check for loosened bolts and nuts, broken spring washers and snap pins etc. (viii) Check for loosened connections, rust, damaged lead wires. (ix) Check whether the contacts are damaged by arcing. (x) Checking of control circuit & tighten the connections if any. (xi) Check close & trip coil. (xii) Checking of Jaw Contacts Conditions and repair/adjust. (xiii) Replace the jaw contacts, If required. (xiv) Improvement of resistance of epoxy insulator and epoxy body by applying post heated varnish. (xv) Replacement of Dashpot/shock absorbers. (xvi) Replacement of carbon brush of spring charging motor

item no 20.00 contd... (b) The following test shall be carried out:- (i) Primary Injection Test of CT / PT (ii) Closing & Opening Timing Test for all three poles. (iii) IR Test with megger in open and closed condition. (iv) Contact resistance test for all three poles (v) Closing coil resistance (vi) Tripping coil resistance. (c) Testing of following relays of control panel with Secondary Injection Kit ,checking and programming of relay :- (i) Over current and earth fault relay (d) Testing of followig Aux relay (i) DC Supply supervision relay. (ii) Master trip relay Note:- (i) The above testing report will be submitted by contractor in soft and hard copy. (ii) Spare will be paid and measure separately under respective items of this schedule

Testing of the cables with high voltage DC testing machine at CAD Pulgaon 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: (i) 11 KV HT cable & joints shall be measured and paid for seperately under respective items of schedule. (ii) 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. (iii) Excavation and earth work will be measured and paid for seperately under respective items of schedule. (iv) Penality will be charged after 02 hrs of reporting about the fault by JE/AGE/GE to the contractor @ Rs 2000/hr. or if unable to attend the fault and same shall get repaired by the department from any other contractor or labour and charge incurred against it will be paid by the contractor.

Supply and fix in repairs out door type cable end termination joint heat shrinkable type for HT XLPE 11000 volt grade cable of size 95 Sqmm 3 core and connecting the cable with the load and testing complete all as specified and as directed. Make:- M-Seal/Birla 3M/Denson Note : Excavation shall be measured and paid separatly under relevant item of this BOQ

All as per item Sl No. 22.00 herein - before but for cable 120 sq mm 3 core complete all as specified and directed.

Supply and fix in repairs indoor type cable end termination joint heat shrinkable type for HT XLPE 11000 volt grade cable of size 95 sqmm 3 core and connecting the cable with the load and testing complete all as specified and as directed. Make:- M-Seal/Birla 3M/Denson Note : Excavation shall be measured and paid separatly under relevant item of this BOQ

All as per item Sl No. 24.00 herein - before but for cable 120 sq mm 3 core complete all as specified and directed.

Supply and fixing in repair 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 95 sqmm XLPE armoured aluminium conductor complete all as specified and as directed. Make:- M-Seal/Birla 3M/Denson Note : Excavation shall be measured and paid separatly under relevant item of this BOQ

All as per item Sl No. 26.00 herein - before but for cable 120 sq mm 3 core complete all as specified and directed.

Supply and fixing in repairs 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 complete all as specified and directed.

Trimming and cutting of tree branches (not more than 50 mm girth) coming across 11 KV HT over head line clearing the line around 2m single/both sides and and disposal of branches from site exeeding 50m and not exceeding 250m from site complete all as specified and directed. Note:- (i) Length of span is approx 50 to 70 RM. (ii) Due care is to be given while trimming/cutting the tree branches that there should no damage to over head line conductor/pole. In case due to any negligence, damage is caused to be make good/renewal by the contractor from his own resources and nothing extra is admissible. (iii) All Safety to labourer must be adhered by the contractor during trimming and cutting of tree branches.

Material and Labour in repairs ACSR conductor including cut to required length and connecting the same to the HT/LT poles complete including taking down old unsv ACSR conductor. Note:- Insulator will be measured and paid separtely.

Material and labour for preparation of old painted surfaces of steel tubular LT/HT poles 9/11 Mtr long including cross arms, MS streep, nuts, bolts, washers, cable protection pipe wherever provided etc and painting of complete area of poles with one coat of aluminium paint from 2.1 mtr above ground level to top of pole and cross arms and painting of bottom area of pole upto 2.1 mtr from ground level with synthetic enamel paint in alternate layer (30 cm wide) with black and yellow paint including writing pole numbers in white letter of approved size on black ground complete all as specified and directed.

Material and Labour for preparation of surfaces and painting of transformers indoor /outdoor type by spraying with two coats of synthetic enamel paint of approved colour, patch work on transformer tank body including welding for closing of cracks and leakages, replacement of Breather Assembly 1 Kg capacity, etc complete all as specified and directed.

Taking down existing cracked/unserviceable Pin type insulator and supply and fixing new Pin type insulator porcelain vitreous white, brown or green including one galvanised mild steel spindle, two galvanised washers and one galvanised iron nuts 150 mm dia for 11000 volts grade complete all as specified and as directed.

Taking down existing cracked/unserviceable Disc type insulator and supply and fixing new Disc type insulator porcelain vitreous 145 mm high and 255 mm dia ball and socket type (white, brown or green) complete single disc assembly for tension with tension clamps suitable for ACSR conductor working pressure 11000 volts grade complete all as specified and as directed.

Material and Labour for drilling boring horizontally (manually) through path/ road/ culverts for laying cable complete all as specified and directed.

Material and Labour for replacement of unserviceable burnt out jumpers conductors on HT overhead line showing RYB Phases with proper insulation and suitable sizes aluminium connector/clamps complete all as specified and as directed.

Material and Labour in replacement danger notice plate of 1.6mm thick MS Sheet, vitreous enameled white letters, figures and conventional skull and bones in signal red colour and fixed with MS clamps of size 20mm x 4mm x 80mm bolts and nuts of approved size of LT 20 X 15cm fixed on New/existing panel board/feeder pillar boxes incisive taking out deteriorated plates complete all as specified and directed.

Material and Labour in replacement danger notice plate of 1.6mm thick MS Sheet, vitreous enameled white letters, figures and conventional skull and bones in signal red colour and fixed with MS clamps of size 20mm x 4mm x 80mm bolts and nuts of approved size of HT 25 X 20 cm fixed on New/existing panel board/feeder pillar boxes incisive taking out deteriorated plates complete all as specified and directed.

Servicing and maintenance of Gang Operated Switch, Drop out fuse assembly triple pole, by applying white petroleum jelly, greasing the operating mechanism, drop out fuse assembly (Set of three); repairing/replacing worn out male contact (moving blade contact), Female contact (Fixed jaw contact), post insulators (Each set), copper jumper, MS jumper carrier, arcing horn, operating pipe of GI 25mm dia 'B' class, pipe guide, locking arangement, operating lever, fixing of appropriate HT fuse element, nut bolts, etc and making the GOD functional complete all as specified and as directed.

Supply and fixing HRC fuse links HT VCB for PTs suitable for 11 KV complete all as specified and directed.

Supply, fixing and testing of CT for HT VCB 11 KV, 630 Amps 50HZ AC supply having CT Ratio 100-50/5+5A complete all as specified and as directed.

Suppy and fixing in replaement of old HT bus bar insulators 1 KV complete all as specified and directed.

Material and labour in replacement/ repair for earthing complete with galvanized steel earth plate electrode 600mm X 600mm X 6mm buried directly in ground vertically to a depth not less than 2.25 meter below normal ground level (with top edge of earth plate not less than 1.5 meter below ground level) connected to GI strip 32mm X 6mm main earthing lead by means of galvanized bolts, nuts and washers all as shown in electrical plate no 5 of MES Schedule Part-I (2009) connected to earth test point & to main switch board etc with & including adequate quantity of charcoal dust and common salt alround earth plate, PCC (1:3:6) type C-1 (using 20mm graded black trap/granite/Basalt stone aggregate) for earth pit with 40 x 40 x 6mm mild steel angle iron frame for cover, pre cast RCC (1:2:4) type B-1 (using 20mm graded stone aggregate) 50mm thick cover reinforced with 8mm dia TMT bars @ 100mm c/c both way with 12mm dia round bar handle, GI medium grade watering pipe 20 mm bore GI medium grade earth lead protection pipe, complete all as specified and directed.

Supply and fixing in replacement of galvanised iron strip 32 X 6 mm buried in ground for additional earthing lead beyond 7.5 meter if required complete all as specified and directed.

Supply and fixing in replacement for kiosk box for luminaires ,weather proof made out of PVC/HDPE fire retardant, non fusing, shock & rust proof, single piece moulded/ SMC housing and SMC cover with hinged door, pole mounting type comprising of aluminum bus bar TPN of 60 Amps with 6 Amp fuse grip with base , of minimum size 300x200x100mm, fixed on pole with MS, clamps 30x5mm with necessary nuts, washer and including applying two coats of synthetic enamel paint over a red oxide primer on steel surface/clamps and embossing/painting of Danger sign of size not less than 10cms x 7.5cms with letter and conventional skull and bones in single red color on front face of kiosk box complete all as specified and directed.

Supply and laying in replacement of galvanized steel tubing 80mm bore "light grade" with all fittings in trenches/ under roads/ along pole/ wall for cable protection complete all as specified and directed. Note: Excavation and earth work shall be measured and paid separately.

Supplying, installing, testing and commissioning in replacement of gang operated air-break switch, triple pole off load, with drop out fuse set insulator, mounted on channels outdoor, vertical mounting type HT 11KV, 50 Hz of rating 200 Amps, ISI marked, mechanically operated, mounted on insulators and frame work with operating mechanism worked from ground level with adequate lenth of GI pipe 32 mm dia medium grade and locking arrangements including, complete with fuse mounts, fuse carriers and HT fuse elements having suitable rating in respect to load, necessary electric connections complete all as specified and directed.

All as per item Sl. No. 49.00 here-in before but for current rating upto 400 Amps complete all as specified and directed.

Taking down existing old unserviceable lightning arrester and supply and fixing of new lightning arrester of expulsion type 65 KA complete with all fitting 11000 volts grade with bolts, nuts and washers and connecting it with existing earth lead/strip complete all as specified and as directed.

Supply and fixing stay assembly in replacement complete with accessories as shown in electrical plate No.1 including stay rod of size 20 mm dia complete all as specified and directed. Note:- loop type insulator, stay clamps, excavation and concrete measured saparately.

Supply and fixing in replacement of LED indication lamp for breaker ON/ OFF/ TRIP/ Breaker Spring Charged/R-Y-B etc for 11 KV control panel including associated wiring, if reqd, complete all as specified and directed.

Supply and installation in replacement Anti-condensation space-heater with Thermostatic control in cable and circuit breaker compartments of HT switchgears complete all as specified and directed.

Supply and fixing in replacement of vacuum interrupter suitable for 400/630 amps, 11 KV HT VCB complete all as specified and directed.

Supply and fixing in replacement of isolating contact assembly suitable for 400/ 630 amps,11 KV HT VCB complete all as specified and directed.

Supply and fixing in replacement of fixed contact block complete suitable for 400/ 630 amps, 11 KV HT VCB complete all as specified and directed.

Supply and fixing in replacement of motor & gear assembly 230V AC suitable for 400/630 amps, 11 KV HT VCB including testing & puting on load complete all as specified & directed.

Supply and fixing in replacement of spring bearing gear suitable for 400 amps, 11 KV HT VCB complete all as specified and directed.

Supply and fixing in replacement of closing coil assembly 24/30 volts DC suitable for 400/630amps, 11 KV HT VCB complete all as specified and directed.

Supply and fixing in replacement of tripping coil assembly 24/30 volts DC suitable for 400/630 amps, 11 KV HT VCB complete all as specified and directed.

Supply and fixing in replacement of panel door lock suitable for 400/630amps, 11 KV HT VCB complete all as specified and directed.

Supply and fixing in replacement auxillary switch (7 No + 7NC) suitable for 400/630 amps, 11 KV HT VCB complete all as specified and directed.

Supply and fixing in replacement T&C Switch for Breaker ON/OFF purpose in HT 11 KV VCB panel including associated wiring, if reqd, for proper functioning of switch complete all as specified and directed.

Supply and Fixing in replacement support rod with screws suitable for 400/630 amps 11 KV HT VCB complete all as specified and directed.

NOTE : SCHEDULE OF CREDIT (Amount on page No 48 shall be deducted offline from the total quoted amount to arrive at the net contract sum to be considered for acceptance [(-) Rs 1,79,546.00 /- ].

M/S Maa Durga Constructions,Pulgaon

M/S. ELECTROPOWER TECHNOLOGIES

Bidder Name

metro electrical services

M/S Maa Durga Constructions,Pulgaon

M/S. ELECTROPOWER TECHNOLOGIES