SUPPLY, INSTALLATION, TESTING AND COMMISSIONING OF MISCELLANEOUS ELECTRICAL WORKS FOR ESTABLISHING GRID POWER SUPPLY AT LAKWA

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INSTALLATION, TESTING AND COMMISSIONING OF 3.15 MVA , 33/6.6KV OIL FILLED TRANSFORMER WITH OLTC AND RTCC. CRANE OR HYDRA REQUIRED FOR THE JOB SHALL BE ARRANGED BY THE BIDDER.OIL FILTRATION MACHINE IN BIDDER'S SCOPE.

DISMANTLING AND SHIFTING OF 33KV ABB MAKE SF6 BREAKER FROM BCPL RAW WATER INTAKE FACILITY AT LEPETKATA TO LAKWA PLANT. (SUPPLY OF CRANE IN BIDDER'S SCOPE)

3.1 SUPPLY and Installation of CT for transformer secondary with rated current 276 Ampere Resin cast, Indoor, Wound primary current transformer, CTR: 400/1, HSV: 7.26KV, IL: 60KVp, 10VA, 5p10, STC : 31KA/1 SEC, FREQ: 50HZ, INSULATION CLASS: B, Secondary terminal on P2 side. GAD IS PLACED AT ANNEXURE-3A. Acceptable make: Pragati Electricals, Precision Electricals, Kappa Electricals.

3.2 INSTALLATION, TESTING AND COMMISSIONING OF 33KV ABB MAKE SF6 BREAKER AND ABB MAKE NUMERICAL RELAY.THIS INCLUDES INSTALLATION OF SUITABLE CTs & PTs. (SUPPLY OF CRANE IN BIDDER'S SCOPE)

RETROFITTING OF NUMERICAL RELAYS

RETROFITTING, TESTING AND COMMISSIONING OF ONE NUMERICAL RELAY FOR RESTRICTED EARTH FAULT AT 6.6KV BREAKER PANEL OF LAKWA. THIS INCLUDES INSTALLATION OF 1 CORE ,400/1A CTs AFTER THE REMOVAL OF EXISTING CTs. SUPPLY OF MATERIALS AND FABRICATION JOB FOR RETROFITTING RELAY SHALL BE IN BIDDER'S SCOPE.

RETROFITTING, TESTING AND COMMISSIONING OF ONE NUMERICAL RELAY FOR FEEDER PROTECTION IN THE ABOVE MENTIONED 6.6KV BREAKER PANEL OF LAKWA. SUPPLY OF MATERIALS AND FABRICATION JOB FOR RETROFITTING RELAY SHALL BE IN BIDDER'S SCOPE.

SUPPLY ,INSTALLATION AND COMMISSIONING OF NEUTRAL GROUNDING SYSTEM

SUPPLY OF COMPOSITE PANEL FOR 6.6KV/√3, 200A, 20 OHM NGR ALONG WITH VACUUM CONTACTOR BASED ISOLATOR PANEL FOR REMOTE AND LOCAL OPERATION FOR 3.15 MVA TRANSFORMER. REFER ANNEXURE-5A FOR COMPLETE SPECIFICATION.

INSTALLATION, TESTING AND COMMISSIONING OF 6.6KV/√3, 200A, 20 OHM NGR ALONG WITH VACUUM CONTACTOR BASED ISOLATOR PANEL FOR REMOTE AND LOCAL OPERATION FOR 3.15 MVA TRANSFORMER.CRANE/HYDRA REQUIRED FOR THE JOB IN BIDDER'S SCOPE.

SUPPLY OF 6.6KV, SINGLE POLE , VACUUM CONTACTOR BASED , ELECTRICALLY OPERATED, ON-LOAD ISOLATOR PANEL WITH LOCAL/REMOTE OPERATION FOR NGR. FREIGHT CHARGES IN BIDDER'S SCOPE. REFER ANNEXURE-5B FOR TECHNICAL SPECIFICATION

INSTALLATION, TESTING AND COMMISSIONING OF 6.6KV , SINGLE POLE , VACUUM CONTACTOR BASED , ELECTRICALLY OPERATED, ON-LOAD ISOLATOR PANEL WITH LOCAL/REMOTE OPERATION FOR NGR. CRANE/HYDRA/LIFTING TOOLS REQUIRED FOR THE JOB IN BIDDER'S SCOPE.

DISMANTLING AND REMOVAL OF EXISTING 6.6/√3 KV, SINGLE POLE , ISOLATOR PANEL INSTALLED IN THE GEG SHED. CRANE/HYDRA/LIFTING TOOLS REQUIRED FOR THE JOB IN BIDDER'S SCOPE.

SUPPLY OF BELOW MENTIONED MANDATORY SPARES FOR 6.6KV , SINGLE POLE VACUUM CONTACTOR BASED REMOTELY/LOCAL OPERATED ISOLATOR PANEL FOR NGR

i. 1 POLE, 11KV, 400A, VACUUM CONTACTOR, COIL VOLTAGE 230VAC ALONG WITH POTENTIAL FREE CONTACTS 2NO+2NC

ii. 11KV PORCELAIN BUSHING

iii. EPOXY RESIN TYPE SUPPORT INSULATOR

ARRANGEMENT OF SUPERVISION DURING THE INSTALLATION AND COMMISSIONING JOB BY THE OEM OF THE NGR AND ISOLATOR PANEL.

CONSTRUCTION OF EARTH PITS AND EARTHING STRIP LAYING

INSTALLATION AND TESTING OF EARTH PITS AS PER IS 3043 FOR PROPER EARTHING OF 3.15MVA TRANSFORMER, OLTC, NGR. SUPPLY OF ALL MATERIALS SUCH AS EARTHING PIPE AND COAL, SAND, BRICK ETC REQUIRED FOR THE EARTHING JOB . CONNECTION OF ALL EARTH PITS TO THE MAIN EARTHING GRID.

EARTHING STRIP LAYING (SIZE 50X6 MM). SUPPLY OF EARTHING STRIP IN BCPL'S SCOPE.

CABLE LAYING JOBS

LAYING OF 1C, 185SQ.MM ARMOURED CABLE FROM GANG SWITCH TO 33KV BREAKER AT SS-1

LAYING OF 1C , 185 SQ.MM OF ARMOURED CABLE FROM 3.15MVA TRAFO PRIMARY TO 33KV BREAKER AT SS-1

LAYING OF 3C ,300SQ.M OF ARMOURED CABLE FROM 3.15MVA TRAFO SECONDARY TO 6.6 KV BREAKER AT SS-1

LAYING OF 33KV, 185 SQMM , 1CORE, AL. CABLE FROM TRAFO NEUTRAL TO NGR COMPOSITE PANEL.

OUTDOOR TERMINATION OF 1C, 185 SQ.MM, AL, ARMOURED CABLE AT GANG SWITCH END INCLUDING SUPPLY & INST. OF RAYCHEM MAKE HEAT SHRINKABLE END TERMINATION KIT.

INDOOR TERMINATION OF 1C, 185 SQ.MM, AL, ARMOURED CABLE AT 33KV BREAKER, NGR AND TRANSFORMER PRIMARY END INCLUDING SUPPLY & INST. OF RAYCHEM MAKE HEAT SHRINKABLE END TERMINATION KIT.

INDOOR TERMINATION OF 3C,300SQ.MM, AL., ARMOURED CABLE AT TRAFO SEC. END INCLUDING SUPPLY & INST. OF RAYCHEM MAKE HEAT SHRINKABLE END TERMINATION KIT.

INDOOR TERMINATION OF 3C,300SQ.MM CABLE AT 6.6KV BREAKER END INCLUDING SUPPLY & INST. OF RAYCHEM MAKE HEAT SHRINKABLE END TERMINATION KIT.

HI-POT TESTING OF 33KV, 1C,185 SQ. MM AL. CABLE

HI-POT TESTING OF 6.6KV, 3 CORE, 300SQ.MM AL. CABLE

HORIZONTAL DRILLING OF ROAD FOR LAYING OF 3 RUNS OF 1 C, 185SQ.MM,33KV, AL. CABLES. SUPPLY OF C.I. PIPES FOR CABLE LAYING IN BIDDER'S SCOPE.

SUPPLY AND INSTALLATION OF CABLE TRAY SUPPORT OF WIDTH 1000 MM & HEIGHT 750 MM FOR OUTDOOR CABLE LAYING.REFER ANNEXURE-7B

INSTALLATION OF CABLE TRAY OF WIDTH 750MM FOR LAYING 3 RUNS OF 1 CORE, 185SQ. MM, 33KV CABLES FROM 33KV O/H LINE GANG SWITCH TO 33KV SF6 BREAKER AND FROM 33KV BREAKER TO 3.15MVA TRAFO PRIMARY.

MANUAL EXCAVATION JOB FOR CABLE TRENCH INCLUDING SAND FILLING, BRICK LAYING AND EARTH FILLING. CABLE MARKER TO BE INSTALLED AFTER EVERY 30METERS. SUPPLY OF CABLE MARKERS, BRICKS AND SAND IN BIDDER'S SCOPE.

SUPPLY OF 45 WATT LED BULBS WITH HOLDERSFOR ILLUMINATION OF 3.15MVA TRANSFORMAR BAY. INSTALLATION OF CABLE CONDUITS AND LAYING OF 1.5 SQ.MM COPPER FLEXIBLE CABLE ALONG WITH THE FIXING OF BULB HOLDERS. SUPPLY OF CABLES AND CONDUITS SHALL BE IN BCPL'S SCOPE.

TO PREPARE THE SLD AND SCHEMATIC FOR THE COMPLETE SCHEME OF GRID SUPPLY & COMPLETE POWER DISTRIBUTION SCHEME OF LAKWA PLANT. BIDDER SHALL SUBMIT ONE SOFT COPY (PDF FORMAT ) AND TWO HARD COPIES THE AS BUILT DRAWINGS . HARD/SOFT COPY OF THE EXISTING SLD SHALL BE PROVIDED BY BCPL.

EXPENSES TOWARDS CONTINGENCY ITEMS