81173 SPECIAL REPAIR FOR REPLACEMENT OF BER/OLD VINTAGE HT 11/0.433KV 100KVA AND 160 KVA TRANSFORMER OF PUMP HOUSE AND AJAY BAUGH LANE 1 WITH 315 KVA CSS UNDER GE MINNIEBAY, SRI VIJAYA PURAM.

Amount

Design, Manufacture, Supply, Installation, Testing and Commissioning of 11 kV / 0.433 kV, 315 kVA OEM Factory Manufactured, factory tested ready to install and connections type Compact Substation with an outdoor enclosure, equipped with 315 kVA oil cooled Transfomer, ONAN type, energy efficiency level-2 as per IS 1180, 3 Way, 11 kV Motorised/Manual Ring Main Unit [SF6 Gas Insulated Switchgear] consisting of 2 Nos, 630A 11 kV Load Breaking Switch & 01 No 630A 11 KV VCBs SF6 Gas insulated Vacuum Circuit Breaker and with 630 Amps, Air Circuit Breaker as secondary side control complete with HT Cable interconnection in between Transformer and RMU and suitable sized Busbar between Transformer and LV Incoming Main Switchgear-ACB for full load output current of the transformer and Internal earthing connections by GI Strips all as a single transport unit complete all as specified as detailed below.

[b] Enclosure: Outdoor type Galvansied enclosure or CRCA sheet as per OEM design painting with two coats of epoxy powder paint over a coat of primer after undergoing a rigourous metal treatment process involving alkalinedegreasing, descaling in dilute sulphuric acid or any other acid and phosphate (seven tank process) having modular construction with 2mm thick Galvanized Sheet or CRCA sheet in Corrugated / Louvered or design type wall design for better heat dissipation and providing robust construction. The degree of protection for HT & LT switchgear compartment shall be IP54 & degree of protection of transformer compartment of the enclosure shall be minimum IP34. The enclosure exterior shall be painted with polyurethane paint / epoxy powder coated and tropicalised to Indian weather conditions suitable for A&N Islands. Each compartment shall be provided with the door and pad locking arrangement. Doors of transformer compartment are fitted with Arc reflectors from the inside for providing better safety. The Compartment illumination lamp with door-operated switch shall be provided for each compartment. Structure of the substation shall be able to withstand the gross weight of all equipment. The Compact Substation shall be provided with lifting beams and hooks for easy installation at site and it shall be possible to transport the equipment along with Transformer, RMU & LT Panel from one site to another. Dimensions of enclosure shall be as per the components required and mentioned in BoQ.

[c] HT Switchgear [Inside Compact Sub-Station]: Three way 11KV, 630 Amps, 21 kA / 3 Sec Non-Extensible Ring Main Unit / Compact Switchgear with Copper Busbar, consisting of 630 Amps, Two Numbers [As incomer] fixed Manual & Motorised Load Break Switch & One Number Fixed Manual & Motorised SF6 insulated Vacuum Circuit Breakers [As Outgoing] in SF6 Gas insulated sealed for life in minimum 2 mm Thickness SS 441 stainless steel tank IP 67 degree of protection with Air Insulated Metering Module along with FRTU, One Number fault passage indicator shall be provided for each Load Break Switch with 1 NO + 1 NC Contact, One Number manometer shall be provided for each outgoing feeders, One set of 100-50/1A, 2.5 VA, Class 1.0 for metering & One set of 100-50 / 1A, 2.5 VA, CL 5P 10 Current Transformers and one number of Digital Multifunction Meter with RS 485 Port shall be provided for each VCB Feeders, One Set of 11 kV / RT3 / 110 / RT3, Class 1.0, 20 kVA PT shall be provided in Metering Module. Vacuum Circuit Breakers shall be with self-powered micro processor based Numerial Over Current and Earth Fault Relay having Charged Open / Closing Mechanism, On / Off Indicators, Mechanical Operation Counters etc. Interconnection between RMU and Transformer shall be using suitable Aluminium unarmoured 11 KV [UE] 3runs X 1 Core X 95 Sq.mm XLPE cable.

[d] Transformer [Inside Compact Sub-Station]: 315 KVA, 11KV / 433V, 3 Phase, 50 Hz, DYn11, ONAN Cooling, oil filled type, Copper Wound, CRGO Core Transformer with OFF load tap change over of range +7.5% to -7.5% in steps of 2.5% on HT side of transformer, having Primary Voltage [HT] 11 KV and Secondary Voltage [LT] of 433 Volts, Delta connected on 11 KV Side & Star connected on 433 Volts side, designed & constructed with particular reference to Tropical Condition, conforming to losses as per IS 1180 energy efficiency level-2 with latest amendment – 1 Nos. [e] LV Switchgear [Inside Compact Sub-Station]: 433 Volts, 50 Hz, indoor LV Panel with Aluminium Busbars [100% for Phase & 50% for neutral, of rating 1.5 times the transformer rated current fabricated using 2 mm thick CRCA Sheet Steel, Ingress Protection IP4X, Compartmentalised complete with internal wiring consisting of following: [i] Incomer: ACB, 630 Amps, 4P, 50 KA, 433 Volts, 3 Phase, 50 Hz, Fixed Manual/Motorised type with Microprocessor based O/L, S/C, E/F Release – 1 Nos [ii] Metering for Incomer: EM6433 Energy kWH Meter-01 No, LT Metering CT’s, 1000/ 1A, Cast Resin Type, Class - 0.2 – 1 Set (set of three), R, Y, B, ON, OFF, Trip LED Indicating Lamps – 1 Set, Control MCB, SP, 6 Amps – As required

[iv] Metering for Outgoing: Digital Multifunction Meter with A, V, KW, KWH, PF, Class 0.5 with Port for each outgoing feeder, LT Metering CT’s, 400 / 1A, Cast Resin Type, Class - 0.5 – 1 Set, R, Y, B, ON, OFF, Trip LED Indicating Lamps – 1 Set for each outgoing feeder, Control MCB, 6A, SP – As required [f] Compact Substation shall be outdoor Plinth Mounted Type. The rate quoted is deemed to be including the cost of Erection, Commissioning of Compact Substation and Civil work such as Construction of foundation of required size including trench for the cabling work etc. complete in all respect as per OEM design & recommendation . However the bidder shall furnish the foundation details for approval as per OEM recomendation before executing the work. [g] Compact Substation shall be complete with the internal interconnections & Earthing [GI] and extending of earth bar of Neutral and body terminals to the frame of the Compact Substation for connecting to the earth pits. [h] The bidder shall assemble the Compact substation at factory and no assembly of the same shall be allowed at site. Bidder shall be responsible for Installation & commissioning Compact substation. Technical data sheet of the Transformer, HV / LV Switchgear, Relay etc. shall be submitted for approval before placing the supply order. [j] The bidder shall supply suitable & required no. of HT & LT Cable termination kits along with Compact Substation for HT & LT Cable terminations.

[k] The Design for Internal Arc Fault shall be tested for 20KA for 1 Second as per IEC 1330/62271-202. [l] Pre-Dispatch Inspection: Bidder shall offer for pre-dispatch inspection at manufacturer site or e-testing as directed by accepting officer. The cost for the same deemed to be included in the quoted rsate. Only after the equipments are cleared by the department in writing, the bidder can dispatch the equipment. Routine tests shall be conducted and original test certificates shall be submitted at the time of Pre-Dispatch Inspection. [m] Commissioning Spares: Additional commissioning spares such as Digital Multifunction Meter – 1 Nos, Indication lamps – 3 Nos, Protection Relay – 1 Nos, Spring Charging Handles – 2 Nos and Panel Keys – 2 Nos shall be provided by the bidder. [n] Suppressors or other protection devices shall be provided, if required as per schedule of quantities, wherever the sub-station installation is likely to interfere during the operation with any other electric or electronic equipment. (p) The rate is inclusive for cement concrete foundation all as per manufacturer's recommendations / design. (q) Pre-commissioning test by AEI/ ESO or any testing officer as nominated by HQ CE (A&N) Zone through Accepting Officer after installation of RMU. (r) The Contractor shall submit GA drawings of CSS for approval of Accepting Officer before placing order.

(s) The make of Transformer, RMU, LT switchgear and connected accessories shall be as per OEM approved make. (t) The Contractor shall submit type test reports as per standards from CPRI or NABL accredited lab before placing order

Supply & fix cable jointing kit for 11 KV grade XLPE cable for Indoor end termination cold shrinkable type joint complete with jointing material and accessories suitable for 3 core XLPE, armoured, Al conductor cable of size 120 Sqmm to 185 sqmm, testing after jointing including taking down defective end joint complete all as specified and as directed.

Supply & fix cable jointing kit for 11 KV grade XLPE cable for outdoor end termination cold shrinkable type joint complete with jointing material and accessories suitable for 3 core XLPE, armoured, Al conductor cable of size 120 Sqmm to 185 sqmm, testing after jointing including taking down defective end joint complete all as specified and as directed.

Taking down of unserviciable old UG Cable of any size and any type complete all as specified and directed .

Suppy and laying in trenches / fixed on walls / passing through pipes, jointing and testing of electric LT cables, XLPE insulated, PVC sheathed, galvanised steel strip or wire armoured electric power cables with stranded aluminium conductors 1100 Volts grade of size 3.5 core 400 Sqmm complete all as specified and as directed by Engineer-in-Charge :- Note: (i) The rates shall be inclusive of Cable lugs at both ends of cable and straight through joint kits if necessary. (ii) Excavation earth, returning, re filling and end termination kits shall be measured and paid seperately. (iii) Insulation Resistance value of cable shall be recorded before and after laying of cable.

Supply & Laying of DWC (Double Wall corrugated) HDPE pipe ISI marked of outer dia of 120 mm polythylene including coupler & Bend with smoooth inernal and corrugated external surface for non pressue under ground cable complete all as specified and as directed by Engineer-in-Charge.

M & L for excavation in trenches any type of soil (soft/loose/hard/dense) not exc 1.5 mtr wide and not exc 1.5 mtr in depth for foundation, pipe, laying of cable etc not exc 10 Sqmtr on plan and not exc 1.5 mtr in depth and getting out complete all as specified and as directed.

M&L for returning filling in, including spreading, leveling, watering and well ramming in layers not exceeding 25 cm in soft/loose soil completeall as specified and as directed.

M&L for removing excavated materials (soil) to a distance not exceeding 50 meters and depositing where directed at a level not exceeding 1.5 meters above the starting point all as specified and as directed.

S & F cable jointing kit for 1100Volt grade cable for indoor / outdoor end termination joint kit, heat shrinkable type joint complete with jointing materials and accessories suitable for LT, XLPE armoured aluminium conductor cable of size 400 Sqmm 3.5 core complete all as specified and as directed.

Dismantling of 160 KVA transformer and shifting to MES store yard complete all as specified and as directed.

Dismantling of 100 KVA transformer and shifting to MES store yard complete all as specified and as directed.

Supply, laying in trenches/ ducts, fixed on walls, passing through pipes, testing & termination of HT UG cable, XLPE insulated screened PVC bedded, galvanised steel strip or wire armoured, electric power cable (heavy duty) with stranded aluminium conductor 11 KV (earthed) grade cable of Size 3 Core 120 Sqmm complete all as specified and as directed. Note:- (i) Excavation earth work shall be measured and paid seperately. (ii) HT end termination kits/ straight through joints shall be measured and paid separately.

Material and labour for earthing with galvanised earth plate electrode 600 mm x 600 mm x 6 mm thick, burried directly in ground vertically to a depth of not less than 2.25 mtr below ground level connected to galvanised iron strip 32 mm x 6 mm by means of GI Welding made out of galvanised iron mild steel and 40 mm dia GI pipe "light grade" for protection of earth lead, 20 mm dia GI pipe for watering and earth plate surrounded by packed layer of coal and common salt, 15cm thick all around bottom and top, watering pipe of 20 mm bore of light grade with funnel all as shown in electrical plate No 3 of SSR Part-I (2009) and connecting to earthing test point, main switch board/ transformer neutral and testing on completion as directed including earthing pit in PCC (1:3:6) type C-1, pre-cast reinforced cover with MS XPM Jalli, RCC 1:1.5:3 cover slab of size 450 x 450 x 100 mm with one handle made out of 8 mm dia round bar, wire mesh and testing complete all as specified and as directed including dismantling old defective earth pit.

Note: (i) Cost of GI earth Strip and GI protection pipe upto 7.5mtr length shall be deemed to be included in the rate quoted for this item. (ii) The unit rate shall also includes for Wire mesh, funnel, excavation.returninng & filling. PCC chamber pit,RCC cover & test point. (iii) If the desired earth resistance is not achived during testing as per IS the complete earthing shall be carried out by the contractor at his own cost and no extra claim shall be admissible.

Supply & laying Galvanised iron strip 32 x 6mm buried in ground for earthing including taking down complete all as specified and as directed.

M & L for good quality dry sand cushioning to under ground electric cable on layer of 8 cm thick before laying the cable and second layer of 15 cm thick after laying the cable all as specified in clause 19.75 of MES Schedule part-I (2009) Note : Sand shall be fined sand as specifed and punned thickness shall be measured and paid.

Supply and laying un-reinforced precast concrete cable cover factory made as per IS 5820-1970, class HV, type 1 with flat, size 300mm x 180mm x 40mm complete all as specified and as directed.

Prasur Electricals & Engineering Co. (BID ID -3236087)

SHUSHANT ASSOCIATES (BID ID -3236164)

surendra infrastructure pvt ltd (BID ID -3236277)

Bharat Udyog (BID ID -3235501)

SATISH AND CO (BID ID -3234891)

GEPS PROJECTS (BID ID -3236349)

LEOENTERPRISES (BID ID -3233245)

Tropical Refrigeration (BID ID -3236477)