SPECIAL REPAIRS TO REPLACEMENT OF TWO NUMBER 500 KVA BER STEP UP TRANSFORMERS WITH NEW 1000 KVA CAPACITY STEP UP TRANSFORMER AND CONNECTED ITEMS IN MAIN RECEIVING STATION AT BRICHGUNJ MILITARY STATION

Amount

Supplying, installation, testing and commissioning of floor mounted, 1000 KVA, 0.433/11KV, 3 Phase, 50 Hz, outdoor ONAN type, YNd 11, double copper wound, oil immersed naturally cooled, step up transformer with OFF load tap changing arrangement on HV side in steps to vary voltage from ± 2.5%, ± 5% and ± 7.5%, having cable end box on both HV & LV side. The cable end box at LT side shall be suitable to house 4 runs of 3.0 core, 400 sqmm, XLPE, U/G, 1100 V grade, stranded aluminium cable and provided with all accessories & gland. The transformer shall be provided with standard accessories, and filled with filtered dehydrated transformer oil having dielectric strength not less than 40 KV with gap of 2.5mm and conforming to IS 335: 1993 complete as per specification, the transformer shall be conforming to IS 1180 (Part-I), the losses of transformer at 50% load and 100% load shall be less than 2790 watts and 7700 watts respectively. The transformer shall be mounted on existing platform, the transformer shall have following accessories:-

(i) Oil conservator with filter type drain valve (ii) Dehydrating breather with silica gel (iii) Pressure release valve (iv) Thermometer dial type having range 0-120 degree centigrade (v) Two earthing terminal on tank body (vi) Rating & specification plate (vii) Bucholz relay with alarm & trip contact including connection upto VCB & testing complete (viii) Oil temperature indicator with alarm & trip contact including connection using suitable sized cable upto VCB & testing complete (ix) Winding temperature indicator with alarm & trip contact including connection using suitable sized cable upto VCB & testing complete (x) Oil level gauge (xi) Oil drain filter cum sampling valve (xii) Oil filling post on top cover with plug (xiii) 4 No plain solid cast steel detachable rollers (xi) Lifting lugs

Note :- (i) Rates are inclusive of arrangements for factory visit of officer detailed by Accepting Officer to carry out routine test at factory premises as per IS- 1180, commisioning of transformer by SEI at site. (ii) Drawing of transformer shall be submitted for approval of Accepting Officer within thirty days of acceptance of tender, otherwise penalty @ Rs. 5000.00 per week shall be levied on contractor subject to maximum upto Rs. 20,000.00. The decision of A.O. on penalty shall be final and binding. (iii) Rates are inclusive of removing old unserviceable transformer and shifting as directed by Engr-in-Charge (iv) Rates are inclusive of making connections of one end each of 4 runs of cable, 3.0 core, 400 sqmm, XLPE, 1100 V grade to the LT side of transformer in cable end box all as required and directed by Engr-in-Charge (v) The neutral on HT side shall be solidly grounded. (vi) Transformer shall have delta connection on LT side & star connection on HT side

Supplying, laying and testing of HT UG cable, XLPE insulated, screened insulated, wire armoured and PVC bedded, 11000 volts grade (heavy duty) suitable for 11 KV earthed system with aluminium conductor of size 3 core, 95 sqmm conforming to IS-7098 Part II laid in trenches, fixed to walls or passing through pipes, properly fixed and connecting up complete all as specified and as directed. Note: (i) Earth work excavation will be measured seperately and paid under relevant items of this schedule (ii) Indoor type joints shall be measured and paid separately under relevant items of Sch 'A'

Material and labour for cable end termination kit complete with jointing material and accessories, heat shrinkable, indoor type suitable for 11 KV, 50 to 95 sqmm XLPE, 3 core power cable with aluminium conductor complete all as specified and directed by Engr-in-Charge Make : Raychem, Birla 3M, Denson, RPG.

Supply, installing, testing and commissioning of indoor type HT VCB, 250 MVA, 400A Panel comprising of following for outgoing: (a) 400 amps continuous bus bar, the material shall be of high conductivity electrolytic copper. All bus bar shall be insulated with heat shrinkable PVC sleeve and joints shall be covered with shrouds/HT tapes. Phase identification shall be made at end by coloured tape. Bus bar shall be mounted on integral seal off bushings and all inter connections shall be electrolytic grade copper only with joints of tin/ silver plated. (b) Circuit breaker shall be mounted on a withdrawl truck with horizontal isolation and manual drawn out type, 12 kV, 3 pole, 400 A, 13.1 kA breaking capacity with ease

(g) 01 - No communication feeder protetction relay with over current, earth fault, Fault record, event record, Disturbance record on Modbus Protocol- Schneider (MiCOM P111) or ABB (REF 615) or Siemens(7SJ63) or Alstom (P14D). (h) Master trip relay - 01 No. (j) Trip Circuit supervision relay in built in main protection relay. (k) Anti pumping relay - 01 No (l) Air insulated rear and bottom entry cable box suitable for termination of 3 core, 95 sqmm, 11 KV, armoured XLPE cable. (m) Heater strip of suitable capacity for moisture removal. (n) Auxiliary supply voltage for the relay/closing coil/Trip coil will be 110V DC, the same shall be derived from the existing battery bank.

(o) Panel must have the following additional features: (i) Detachable spring charging handle (ii) Manual spring charging, closing and tripping of the CB with compartment door closed (iii) Fault internal arc tested for 25kA for 1.0 sec (iv) Short time rating for 3 sec as per IEC 62271-100 (v) Mechanical endurance test-M2 (vi) Vacuum interrupter for VCB shall be short time rated for minimum 25kA for 100 nos of operations. (vii) Horizontal mounted vacuum interrupter in VCB shall not be accceptable. (viii) Bus bar, droppers and inter connections in VCB shall be rectangular cross section only. Round/triangular or D shaped bus bars, droppers and inter connections are not acceptable.

Note: (i) Rates are inclusive of arrangements for factory visit of officer detailed by Accepting Officer to carry out routine test at factory premises, commisioning of VCB by SEI at site. (ii) Drawing of VCB shall be submitted for approval of Accepting Officer within thirty days of acceptance of tender, otherwise penalty @ Rs. 5000.00 per week shall be levied on contractor subject to maximum upto Rs. 20,000.00. The decision of A.O. on penalty shall be final and binding. (iii) The above quoted rate are deemed to include the making of connection with bus bar of existing 11 kV VCB after carrying out necessary addition/alteration to existing VCB panel in MRS, Brichgunj including connecting the earthing strip complete all as directed. (iv) Rates are inclusive of all other accessories which are required technically for making VCB operational

Connecting, testing & jointing the one side end each of 4 runs of 400 sqmm, 3.0 core, XLPE, 1100 V grade armoured cable, to out going side of ACB of DG set including making necessary arrangements in LT panel of ACB to facilitate connection all as directed. Note: Rates are inclusive of brass cable glands, lugs etc.,

Supply & laying of LT UG cable, 1100 V grade, XLPE insulated PVC sheathed multistranded galvanised steel strip or wire armoured heavy duty electric aluminium conductor cable 04 runs of 400 sqmm, size 3.0 core, all as per IS -7098 (Part-1 1988), laid in trenches/fixed to poles / fixed on wall/ drawn through pipes/through floor after cutting floor slab with complete all as specified and directed Note: (i) Earth work excavation will be measured seperately and paid under relevant items of this schedule (ii) 04 runs of cable shall be measured as one unit (Running Metre) in schedule

Supply and laying GI pipe 100mm dia light grade including all fittings complete laid in trenches/in floor, fixed on wall/ on pole for protection of underground cables all as specified and as directed by Engineer -in-Charge.

Material and Labour for earthing complete with galvanised steel earth plate electrode 60 cm x 60 cm x 6 mm thick buried directly in ground ( earth pit not less than 2.25 M deep below ground level) with top edge of the plate not less thab 1.5 Meter below normal ground level connected to galvanised (GI) strip of 32mmx6 mm as main earthing lead (upto 7.5 m length from earth electrode to test point) by means of galvanised iron or steel bolts, nuts, check nuts & GI washers and GI tubing 40 mm bore medium grade for earth lead protection up to main earth test point and including concrete pit in PCC (1:3:6) type C1, pre cast RCC (1:2:4) type B1 as in cover slab 54 x 54 x 5 cm including 8mm dia MS TMT bars @ 150 mm c/c as in reinforcement with one handle for lifting made out of 8 mm dia MS bar, wire mesh, 20 mm bore GI tubing (Light Grade) for watering and funnel, charcoal or coal and salt in alternate layers including excavation earth work in any type of soil, returning, filling in, including spreading, levelling, watering and well ramming in layers and removal of surplus soil complete all as specified and directed electrical plate No. 3 of SSR part - I complete all as specified and as directed.

Taking out/taking down damaged/unserviceable LT UG XLPE cable of size upto 240 sqmm from in floor/trenches/ drawn through pipes etc., after necessary electical disconnection complete and depositing in store all as specified and directed

Taking out/taking down damaged/unserviceable HT UG XLPE cable of size upto 3 core, 95 sqmm from in floor/trenches/ drawn through pipes etc., after necessary electical disconnection complete and depositing in store all as specified and directed

Excavation in trenches not exceeding 1.5 m wide and not exceeding 1.5 m deep for foundation etc or for for laying of LT cable / pole etc., and getting out in any type of soil complete all as specified.

Returning, filling in, including spreading, levelling, watering and well ramming in layers not exceeding 25 cm thick in any type of soil complete all as specified and directed.

Removing excavated material (soils) to a distance not exceeding 50 m and depositing where directed at a level not exceeding 1.5 m above the starting point complete all as specified and directed.

Supply and filling pulverized stone dust to the full width of trenches for protection of cables including spreading, punning down and consolidation complete all as specified and directed. Note : Thickness of stone dust will be paid after cushioning and punning.

Supply and laying unreinforced Precast Cement Concrete Cable covers, class HV, type-1, flat, size 300 mm X 180 mm X 40 mm made out of Cement Concrete M-20 grade (using 12.5 mm size aggreagate) as per IS-5820: 1970, in trenches for cable protection, embossed with "ELECTRIC" on the top surface complete all as specified and as directed.

Supplying and laying unreinforced precast cement concrete cable cover, class LV, type 1 flat, size 250mm x 150mm x 40mm made out of M-20 grade PCC as per IS 5820:1970 in trenches for cable protection, embossed with "ELECTRIC" on top surface complete incl taking down old all as specified and as directed.

Prasur Electricals & Engineering Co.

bansal construction

surendra infrastructure pvt ltd

PTech Engineers