REPAIR/MAINTENANCE OF POWER TRANSFORMERS AND EHV NETWORK SYSTEM INCLUDING ALLIED WORKS AT 66 KV MRS UNDER GE (N) PATIALA

Supplying and fixing including commissioning protection relay Make MiCOM P141-Feeder relay-40TE-Panel mounting - 8 Inputs / 7 Outputs at VCB panels complete all as specified and as directed by Engineer-in-Charge comprising of following :- Protection Type : Overcurrent ANSI code : 50 / 51 Breaker failure Cold load pick-up Earth fault ANSI code :50G / 51G Directional earth fault Lockout ANSI code : 86 Negative sequence overvoltage ANSI code : 47 Under voltage ANSI code : 27 Overvoltage ANSI code : 59 Directional phase overcurrent Rate of change of frequency ANSI code : 81R Neutral voltage displacement ANSIcode : 59 N Thermal overload protection ANSI code 49 RMS Under frequency ANSI code : 81L Over frequency Phase undercurrent ANSI code 37 Earth fault watt metric Restricted earth fault Voltage - restrained overcurrent. Number of inputs : 3 voltage, 8 discrete, 5 current input CT...X/5 A and X/1A Number of inputs : 7 discrete Communication port protocol : IEC 61850 DNP3 (Modbus RTU) Ethernet IEC 60870-5-103 Auxiliary Supply : 24….48 V DC 19…65V 48…110 V DC 37… 150V 40... 100 V AC 32 ... 110 V 110...250 V DC 87...300 V 100...240 V AC 80... 265 V

Supply and fixing in replacement transformer protection differential relay of 66 KV/11 KV fixed in transformer control panel, 3 phase, in-1/5A, F=50 Hz, EL=24-240 Volts, including dismantling of old unseviciable differential relay and necessary setting of new relay with all connected tripping mechanism/power transformer control relays and submit necessary test report complete all as specified and as directed by Engineer-in-Charge.. Make:- Model No MIcom P 642 of Schneider or equivalent make give in List of makes appx'B' .

Material and labour for painting of HT panel/VCB Panel indoor type, removing existing old paint with the help of sand/emery paper etc. Preparing surfaces externally including cleaning etc. Applying externally two coat of synthetic enamel paint with help of spray machine method including cleaning the VCB's breakers and inner compartment by using blower and greasing the spares of the panels, Including making the provision of FEEDER's name plates and outgoing details (for 66 KV Grid) by fabricated/embedded sheet of suitable size, as directed by Engr-In- Charge at site complete all as directed by Engineer-in-Charge. Notes :- (a) Shutdown of HT line shall be taken by contractor in writting from MES (b) Painting at 66 KV Grid VCb's and feeder indication plates are catered in this BOQ schedule.

Material and labour for taking down by scraping of old bubbled paint from Isolator box approximate size 2.50 x 2.5 x 1.5m at 66 KV sub station including preparation of surface and re-painting with spray guns with two coats of synthetic enamel grey paint & including applying two coats of black paint to the angle iron frame including welding of doors etc complete all as specified and as directed by Engineer-in-Charge..

Material and labour for taking down by scraping and preparation the surface from the CTs & PTs tower steel structures approximate size 9 x 2.2' x 2.2' at 66 KV sub station including repainting with spray guns with two coats of super quality of aluminium paint etc ccomplete all as specified and as directed by Engineer-in-Charge..

Material and labour for aluminium conductor steel reinforced (ACSR) DOG/Zebra for 66 kV sub station including fixing, stretching on Steel structures and proper noseling with binding wire with insulator of any size as required at site Including taking down of old unsv conductor complete all as specified and as directed by Engineer-in-Charge..

Supply and fixing in repair/replacement Bimettallic Clamp or T clamp or CT Clamp or Cross Clamps for connection of Zebra conductor with Cable end, CTs, NCTs, Transformer HT Bushes complete all as specified and as directed by Engineer-in-Charge. Note :- Each clamp will be considered as one item of work.

Supply and fix in replacement of danger notice plate of 1.6mm thick mild steel sheet, vitreous enamelled red, with letters, figures and conventional skull and bones in signal white colour and fixed with M.S. clamps, bolts and nuts of approved size, for HT, 25x20cm size complete all as specified and as directed by Engineer-in-Charge..

Supply, install, test and commissioning of 66 KV class station heavy duty metal oxide gapless type outdoor lighting arrester (LA) for use with effective ground natural system with insulating base including surge monitors for 66 KV with all accessories to meet the requirement as under :- (a) Nominal system voltage 66 KV (rms) (b) Highest system voltage 72.5KV (rms) (c ) MCOV 52 KV (d) Nominal discharge current -10 KAP (e) Line discharge-Class 3 (f) High current discharnge- 100KAP (g) Max residual voltage-165KVP at 01 KAP complete all as specified Make:- Lamco/Oblam/CGL/Elpro

Material and labour for Structural mild steel channel, angle iron, flat iron and brackets etc for cross arms, bracings, supports, D-clamps, stiffeners, eye hooks, pole clamps, stay clamps, and back plates including nuts, bolts and washers, welding, bending cold or hot, drilling holes for bolts in any shape or size as indicated or directed and inclusive of one coat of red oxide primer, one under coat and one finishing coat of aluminium paint complete including dismantling of old unsv channels and structures complete all as specified and as directed by Engineer-in-Charge. Note:- Insulators shall be measured and paid for separately