AUGMENTATION OF HT 11 KV 2 x 750 KVA DG SET TO 11 HT 2 x 1010 KVA DG SET TO MEET TECHNICAL REQUIREMENT OF BUILDING No. P-105 OLD MAIN RECEIVING STATION (MRS) UNDER AGE I RND NSTL VISAKHAPATNAM

Amount

M&L for dismantling the existing HT 11 KV 750 KVA DG set of Kirloskar Electric Company Ltd make after disconnecting electric cables & connected accessories and depositing to MES storeyard. Supply, installation, testing & commissioning of HT 11 KV, 1010 KVA/808 KWe Silent DG Set comprising of cummins make Engine model KTA-38-G5 or techno commercially equivalent make / model devloping minimum BHP 1180 at 1500 rpm coupled to 1010 KVA, 11 KV Stamford / TDPS make alternator or techno commercially equialent make / model mounted on a common base complete with (i) Fuel tank. (ii) Battery & ledas. (iii) Silencer residential. (iv) AVM pads. (v) First fill of lube oil.

The following are the technical specification of HT 11 KV,1010 KVA DG Set. DIESEL ENGINE Cummins Diesel engine model KTA38-G5 V or techno commercially equivalent make / model developing 1180 BHP at 1500 RPM under NTP conditions, water cooled, four stroke, 12 cylinder, electric start, turbo super charged & after cooled model, conforming to BS: 5514 / ISO 3046 with capacity of 10% over loading for one hour in every 12 hours duration having the following technical specifications: - AIR INTAKE SYSTEM • Air intake manifold. • Dry type heavy duty air cleaner. • Vacuum indicator. EXHAUST SYSTEM • Turbo super charger. • Flexible connection. • Exhaust manifold. • Hospital Grade silencer.

COOLANT SYSTEM • Engine water pump. • Radiator / Heat Exchanger. • Coolant additive concentrate. INTEGRATED DG SET CONTROLLER- PCC-3.3 CONTROL • Run / Off / Auto switch.

• Emergency stop. • Manual Run / Stop Control switch. • Idle / Run mode control. METERING ENGINE • Starting Battery Voltage. • Lube Oil Temperature & Pressure. • Engine Coolant Temperature. • Coolant Pressure. • Engine Rpm. • Operating Hours. • Number of Starts.

ELECTRICAL • Current • Voltage • Frequency • KW • KWH • Pf • KVA PROTECTION / WARNING ENGINE • Over Speed Shutdown. • Low Lube Oil Pressure Warning / Shutdown. • High Coolant Temperature Warning / Shutdown. • Low Coolant Temperature Warning. • Low Coolant Level Warning / Shut Down.

• Low And High Battery Voltage Warning. • Weak Battery Warning. • Over Crank Shutdown. • Fail To Crank Shutdown. • Magnetic Pickup Failure Shut Down. ALTERNATOR • Over Current. • High Voltage. • Low Voltage. • Under / Over Frequency. • Reverse Power (KVA & KVAr). • Phase Sequence. SPECIAL FEATURE • Digital AVR. • Amp Sentry Protection. • Sensor Failure Indication. • Programmable Idle Speed Control. • Digital Synchronizing Function. • Sync Check. • Synchronoscope. • Auto Load Sharing. • Compatibility to Remote Monitoring.

• Smart Starting. BASE FRAME Engine and alternator are mounted, coupled and aligned on a common MS channel fabricated base frame with pre-drilled holes. BATTERIES Two Nos. CUMMINS PULSE make batteries SMF VRLA Type Maintenance free of 02 Nos 12V - with its leads. LUBRICATING SYSTEM • Oil pan. • Engine mounted lube oil pump. • Full flow spin on lube oil filter. FUEL SYSTEM • PT fuel system with Electronic Step Timing Control (ESTC) injectors with Electronic Governor.

• 24V DC solenoid coil. • Duel fuel filter system. STARTING SYSTEM • 24V DC electric starter. • 24V DC battery charging alternator ALTERNATOR Stamford / TDPS make or techno commercially equivalent make / model standard design alternator rated at 1010 KVA, 11KV, 0.8 PF (lag), 50 Hz, 3 Phase, 4 wire PMG excited with brushless excitation. The alternator generally conforms to IS/IEC 60034-1. • Voltage Regulation: +0.5% of rated voltage from no load to full load. • Enclosure: IP-23. • Insulation: Class 'F' with Temperature rise limited to Class 'F' insulation limits. • Permissible over load: 10% for one hour in 12 hours of operation. • RTD, BTD, Space heater.

Note: (i) Civil works and PCC foundation as per manufacturer's recommendation. (ii) Any components and accessories required for commissioning of synchroniging panel shall be provided by the contractor without any extra cost to the department and the rate quoted shall be deemed to be included. FUEL TANK Daily service fuel tank 990 lts 2mm thick complete with drain valve, air vent, inlet and outlet connection. The fuel tank shall be suitable for floor mounting installation out side the acoustic enclosure.

BATTERIES Two Nos. CUMMINS PULSE make or techno commercially equivalent make / model batteries SMF VRLA Type Maintenance free of 02 Nos 12V - with its leads. ACOUSTIC ENCLOSURE: AS per latest CPCB norms. DOCUMENTATION One set of following documents shall be provided with each set: - • O&M Manual of Diesel Engine. • Spare parts list of diesel engine. • Test Certificate of diesel engine. • Test certificate of Alternator. • Test Certificate of D.G. Set.

Notes: (i) The suitable size of HT 11 KV UG XLPE cable and its termination joints from generator output to VCB panel shall be deemed to be included in above quoted rate. (ii) The suitable size of HT 11 KV UG XLPE cable and its termination joints from generator neutral link to NIS/NGR panel shall be deemed to be included in above quoted rate.

(iii) Foundation for DG Sets as recommonded by OEM should be included in the quoted rate. (iv) Any modifications required for existing Crompton VCB's installed at P-105 Bldg ie.2 I/C+1 O/G the same cost should be included in the quoted rate. (v) Any type of control wiring required for DG's to VCB's & VCB's to Synchronising panel cost should be included in the quoted rate. (vi) 30m structural supports for exhaust stack and horizontal pipe support including silencer alongwith structure design charges including ladder with guard and platform and base plate and foundation bolts - cost included with crane charges & structure design. The cost should be included in the rate quoted by the contractor. Exhaust System The following under mentioned materials as per OEM recommendations from (i) to (viii): - (i) Exhaust pipe 10" dia (250mm) - MS 'B' class 4.85mm thick pipe after silencer before Y joint.

(ii) Exhaust pipe thermal insulation and cladding for 10" dia pipe after silencer before Y joint (considered mineral wool insulation of density 64 Kg/m3 with 75mm thick bound with GI chicken wire mesh & 26 SWG Al sheet). (iii) Exhaust 18" dia pipe (400mm) - MS ERW pipe 4.85mm thick pipe horizontal run from Y joint to structure bottom. (iv) Exhaust pipe thermal insulation and cladding for 18" dia pipe horizontal run from Y joint to structure bottom (considered mineral wool insulation of desity 64 Kg/m3 with 50mm thick bound with GI chicken wire mesh & 26 SWG Al sheet). (v) Exhaust 18" dia pipe (400mm) - MS class 'B' pipe 4.85mm vertical pipe inside structure. (vi) Exhaust pipe thermal insulation and cladding for 16" dia pipe (considered mineral wool insulation of density 64 Kg/m3 with 50mm thick bound with GI chicken wire mesh & 26 SWG Al sheet).

(vii) Thermal insulation with aluminium cladding for silencer vertical pipe inside structure (considered mineral wool insulation of density 64 Kg/m3 with 50mm thick bound with GI chicken wire mesh & 26 SWG Al sheet). (viii) 18" SS bellows with matching flanges, gaskets and hardware's. (ix) Supply and installation of Lightening Arrestors non-seamer type with GI strip upto earth pit - 01 set. (x) Sypply and installation of twin light Aviation light alongwith cable upto light - 02 Nos. Make: Bajaj / Crompton / Havells / Philips. (xi) Any type of modificatons required for PCC 3.3 controller with DG sets and existing VCBs, the cost should be included in rate quoted by contractor.

(vii) DG exhaust stack structure with suitable size of pipe & Thermal cladding-vibration free support structure combined structure for all genset where possible insulation to withstand temperature upto 600C provision for carbon drain and emission measurements B class Jindal / TATA pipes with heat resistant MRF paint - upto 625 Deg C insulation rock wool matress (SAINT-Gobain make) for max efficiency and protection. mimimum back pressure on engine by ideal piping layout. Pipe lines with exhaust outlet as per Pollution control norms. Pipe design for minimum emission level, carbon emission test provision etc. Combined pipeline structures with pipes -of ideal diameter to minimize back pressure on the engine are erected with stack height complying with CPCB and related norms.

(viii) Contractor should submit the technical data sheet & GAD drawings of DG sets, VCB's, Synchronising panel with in 30 days from the date of acceptance of tender. (ix) The cost of Load testing as per OEM recommendation of two DG sets should be included in the above quoted rate. (x) The cost for SLD for two DG sets, VCB's & Synchronising panel provide in P-105 Bldg should be included in the above quoted rate.

Supply, install, testing & commissioning of Neutral isolation switch & Neutral grounding resistor panel suitable for HT 11 KV 1010 KVA DG SET, the panel should be indoor type cubical, pedestal type, floor mounted factory made, dust and vermin proof, IP-54 fabricated out of stainless steel sheet not less than 2.0 mm thick fixed on angle iron frame of size 50 x 50 x 6mm conforming to Fe 410-0, front openable double stud hinged with locking arrangements, lock openable by keys, having chromium plated 19mm dia fancy lock, louvers and air vent, gasket U type for natural flow of air, complete dust and vermin proof and panel fixed with PCC 1:2:4, type B1 (using 20mm graded stone aggregate) platform 60 cm above the ground level and 45 cm below the ground level with following technical specifications: -

NGR Suitable for DG Set, 11 KV 1010 KVA Type: Punched S S Grids. Material: AISI 304. Duty rating: 10 seconds. Fault current: 100A. Resistance value: 63.5 ohm. Voltage: 11 KV. Max Temp Rise above ambient: 375 degree C. Resistor element connection: Series Connection. Ref standard : IEEE-32. Degree of protection: IP 55. Type of NGR: PSS & in door type.

Supply, installing, testing & commissioning of maintenance free Chemical earthing by using copper earth plate 90 x 60 cm x 5mm thick, buried directly in ground (earth pit not less than 2.25 metres deep below ground level) with top edge of the plate not less than 1.5 metres below normal ground level, connected to copper earth strip 32 x 6 mm thick by means of bolts, nuts, check, nuts and washers of galvanised iron or steel all, the ground enhancing compound made of Marconite conductive aggregate (consist of Marconite resin based cement, adhesive and gypsum plaster) of suitable quantity to make earthing resistance below 1 Ohm & PCC chamber of size 300 x 300 x 300 mm with cover shall be provided on the top of earth system on 100 mm thick PCC 1:3:6 bed concrete. The chamber shall burried in ground with top edge projecting upto 75 mm from ground surface complete all as specified and directed.

Notes: (i) The earth resistance value should be less than 1.00 Ohm. (ii) The quoted rate shall include cost of copper strip 32 x 6 mm upto 7.5 Mtr length & GI pipe 50 mm dia light grade upto 7.5 RM for protection of earth strip. (iii) The contractor shall given a written guarantee for maintenance of earth resistane value less than 1 ohm for a period of 02 Years from the certificate date of completion.

M&L for earthing continuity copper strip 32 x 6 mm dia or main earthing lead fixed to wall with clamps or recess or croses or buried in ground or drawn in conduits / pipe or fixed to poles or any other indicated situation for loop earthing etc, as required all as specified and directed by Engineer-in-Charge.

SITC of HT 11 KV VCB panel with incoming and outgoing cable box consisting of capacity 350 MVA, 630 Amps 11 KV VCB, indoor type VCB, extendable 25 KA/1 sec totally enclosed free standing, floor mounted type, compartment based with truck mounted VCB, spring operated electrically and manually charged operating mechanism suitable for horizontal isolation, horizontal drwa out type VCBs with copper busbars, self supported insulated busbar with full voltage rated complete VCB panel conforming to IEC 62271-200 standards and IP 4X class of protection comprising of necessary busbar extensions and connections circuit breaker suitable for E2, M2, C2 duty vacuum interrupters of the circuit breakers completely encapsulated in epoxy housing switch gear and control gear panels of fully arc proof IAC AFLR for 26.3 KA for 1 sec with micro processor based numerical relay communicable type in line with RS 485 Modbus protocol, comprising of three over current, one earth fault protection relay with high set for both phase and earth and with fault memory, universal aux supply, master trip relay, trip circuit supervision relay digital multi functional meter with class 1.0, PT 11 kv/110 AC, Power pack 11 KV, 230 V AC complete all as per enclosed BOM. 11 KV 630 A,

25 KA for 3 sec STC VCB panel - 01 No. consisting of: - (a) 630 Amps continous high conductivity electrolytic copper busbar, raychem insulated for full voltage,phase identification made at the end by coloured tape, busbar shall be mounted on integral seal of bushing and inter connection with electrolytic grade copper with joints silver painted. (b) Circuit breaker shall be mounted on with drawable truck which shall roll out horizontally from service position to isolated position with ease.

(c) Motorised spring charged mechanism 230 V AC. (d) Car resin transformer 11 KV, 200-100/1+1 Amp, 15 VA, CI 15 VA, CI 5P 10, CL:0.5 - 03 Nos. (e) Cast resin 3 phase PT 11 KV/110 Volts, 100 VA, CI 1.0 - 03 Nos with 3 Amps capacity PT fuses.

(l) Air insulated rear bottom & side entry cable box suitable for termination of HT XLPE 11 KV cables. (m) Anti pumping relay (VAA 11) - 01 No. Make: Siemens / ABB / SCHNEIDER / GE. (n) Power pack - 01 No.

(o) Feeder protection relay with phase over current (50/51), directional phase over current (67), SOFT switch on to fault (50 HS), Current unbalance (46), thermal overload (49), earth fault (50N/51N), Directional earth fault (67N), under voltage (27), over voltage (59), zero sequence voltage protection (59N), frequency (81), auto reclose (79), Circuit breaker failure (50BF), cold load pick-up and magnetising inrush, programmable stages (99), CB wear relay shall have 4CT and 4VT inputs. Relay shall be provided with atleast 16 digital inputs and 8 digital outputs and 1 self supervision output. Relay shall have also these features inbuilt. MIMIC display with single line representation and switch gear controls shall be possible through the MIMIC front USB for connecting to PC, conformal coating to withstand harsh environment, support PRP redundancy communication protocol on FO ports.

Web server (web HMI) feature to monitor and control using LAN shall have minimum 1000 events. Relay shall support SNTP time synchronization & support customer defined programmable logic with minimum 8 programmable LED relay shall have disturbance recorder with settable sample rate from 8 cycle to 32 cycle or MICOM P3U30 or equivalent in Make: ABB / CG / Siemens. (p) Panel shall also have additional features like continous rated closing / tripping coils, spring charging handle, manual closing / tripping off the VCB with compartment door closed, short time rating 01 set as per IEC 62271-200 and VCB shall be suitable for E2, M2, C2 class. (q) Breaker shall also be provided with Aux switch 6NO+6NC contacts mounted on the draw out portion of the switch gear and position cell switch with 3 NO + 1 NC contact each for test position.

(r) IAC AFLR 26.3 KA for 1 Sec. (s) 12 window annunciator (t) TAFU card for Aux transfomer faults. Note: Cost for necessary adaptor panel required as recommended by OEM for connection with existing VCB is deemeed to be included in rate quoted by contractor.

M&L for excavation in trenches not exceeding 1.5 mtr wide and not exceeding 1.5 mtr in depth including taking down old cable in soft / loose soil complete all as specified and directed.

M&L for dry sand cushioning to under ground cable in trenches including spreading, levelling and hand punning complete all as specified and directed.

Supply and laying un-reinforced precast concrete cable cover class HV type I, size 300 x 180 x 40mm complete all as specified and directed.

M&L for cement concrete (1:2:4) type B2 (using 40mm graded stone aggregate) as in foundations, filling and mass concrete complete all as specified and directed.

Cutting trench of width 30cm and depth not exceeding 60cm through road / hard standing for laying cable through GI pipe and returning, filling in including spreading leveling watering and well ramming in layers not exceeding 25cm after laying the cable complete all as specified and directed.

GI tubing light grade 150 mm for cable protection, laid under plinths / floors / roads / paths / culverts or fixed on walls or concealed in walls or along the steel poles by means of M.S.F.I clamps with necessary bolts nuts & washers etc complete all as specified and directed.

M&L for returning filling in including spreading, levelling, watering and well ramming in layers not exceeding 25 cm in thick complete all as specified and directed.

M&L for removing excavated material to a distance not exceeding 50 mtr and depositing where directed at a level not exceeding 1.5 m above the starting point complete all as specified by the Engineer-in-Charge.

Supply, laying & connecting XLPE insulated, screened, PVC bedded, galvanised steel strip or wire armoured electric power cables (heavy duty) with aluminum conductor, 11000 volts grade cross sectional area 185 sqmm 3 core laid in ducts / wall / cable tray / trenches with suitable size complete all as specified and directed.

M&L for 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 aluminum conductor cable of size 185 sqmm complete all as specified and directed.

JCC ENGINEERS PRIVATE LIMITED (BID ID -3321343)

Power Dynamics (BID ID -3323598)

Sant Construction Co. (BID ID -3324862)

K KUMAR RAJA PROJECTS P LIMITED (BID ID -3324928)

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TRIVENI CONSTRUCTIONS (BID ID -3324392)

SUPERNOVA ENGINEERS LTD (BID ID -3322559)

United Sales Corporation (BID ID -3324936)