Increasing capacity

Part-A (Work ) Dismantling of 240 MVA 400/220/33 KV Transformer and its all accessories, and Installation of NEW 315 MVA 400/220/33 KV Transformer at 400 kV Sub Station-II Muradnagar :- Dismantling of following old & used equipment by opening of nut-bolt opening of jumpers and also removal of earthing and safe shifting of LA upto strore and all other associated works.

198 KV LA&245KV PI (alongwith dismantling of structure & its shifting to storage place)

Shifting of following equipments from store/another place to site, its erection alongwith all associate works, earthing etc.

198 KV LA&245KV PI (alongwith structure)

Removal of HV/LV jumper conductor, Neutral earthing strip electrical connection including cutting of channel/angle iron etc.

Complete dismantling of 240 MVA Transfomer (Alsthom make) of all radiator, conservator tank, oil pipe line,all bushing,turret, cooling fans,motors, marshalling box, RTCC panel etc. Blanking the radiator,oil pipe line, conservator tank,turret etc including proper stacking. All T &P shall be arranged by the contractor at his own cost.

Dismantling all water and air pipe lines of Mulsifire system of 240 MVA Transformer it's safe shifting to storage place.

Filling Completely drained out oil from 240 MVA Transformer in 50 KL oil tank including Carriage of empty 50 KL oil tank From 400kv s/s-I muradnagar to site.

Shifting of main tank of 240 MVA Transfomer (ALSTHOM Make) from plinth to storage platform.

Upto 20 Meter distance

Additional shifting @ 5 mtrs./per job as actual including all T&P and all other work required to complete the job satisfactorily

Shifting of Main tank of new 315 MVA T/F from unloading place to Plinth including necessary turning as needed. Shifting of Main tank of new 315 MVA T/F upto 20 Mtrs.

Providing of Dry Air at the time opening of blanking plate for erection inspection of 315 MVA T/F main tank and filling of Dry Air of dew point -50°C or better for completion of Work. The work shall include connecting pipe as required and measuring of Dew Point values of Dry Air.( If necessary)

Complete safe erection of new 315 MVA T/F including all Bushing and their turrets,Conservator Tank connecting oil pipe lines Tap changer,Marshalling Box and Associated Pipe line etc. to complete the job satisfactory.

Complete evacuation of 315 MVA Transformer Main tank and providing & filling of Dry N2 of dew point -50°C or better in vacuum up to pressure of 0.25 Kg/Cm2 and then again evacuating the Transformer tank after required time interval (approx 24-48 Hrs) using centrifuging machine. The work shall including connecting pipe of machine as required and measuring Dew Point values of Dry Nitrogen before & after every cycle till the required value is achieved. (01 Job for each cycle)

Filling approx 70 KL T/F oil in 315 MVA oil tankers from 209 Ltr. Drums using centrifuging machine for increasing the BDV value before filling in 315 MVA T/F including shifting of oil drums from storage place to & fro. Hot Oil Circulation of approx. 70 KL T/F oil of 315 MVA T/F in Main Tank, Radiators or oil tanker by connectin 12 KLPH Centrifuging machine with new filters for dehydration of oil, windings etc. and taking & recording BDV valus of oil and IR valus of transformer windings periodically till the required value is reached including filling & topping up of oil in Main Tank, Radiators, Conservator Tank, OLTS etc. as per directrion of Supervising Engineer/standard practices.

Laying of control cable of various size from 315 MVA transformer marshalling box .CT and OLTC to relay /control panel including associated work as shifting from store .

1.1 KV armoured Copper Control Cable 2x2.5sq. mm

1.1 KV armoured Copper Control Cable 4x2.5 sq. mm

1.1 KV armoured Copper Control Cable 6x2.5 sq. mm

1.1 KV armoured Copper Control Cable 10x2.5sq. mm

1.1 KV armoured AL power Cable 3.5x35 sq. mm

1.1 KV armoured AL power Cable 3.5x70 sq. mm

Termination of following size of control cables as laid above as per cable schedule including making necessary holes in gland plates or boxes wherever required along with supply and fixing of cable glands of appropriate size & providing of Ferrules for each core of the cables & its termination with crimping type lugs of Dowell/ Tension make and all other associated works such as interconnection between RTCC panel,C&R panel,marshaling box,driving mechanism to complete the job satisfactorily:

1.1 KV armoured Copper Control Cable 2x2.5sq. mm

1.1 KV armoured Copper Control Cable 4x2.5sq. mm

1.1 KV armoured Copper Control Cable 6x2.5 sq. mm

1.1 KV armoured Copper Control Cable 10x2.5 sq. mm

Delta earthing for 315 MVA transformer consisting of fabrication of delta set with 03 nos. 40 mm/36mm dia size 3 mtr long electrode, its placing inside ground and connecting all these electrodes with 75X10 mm MS flat 700 mm deep and connected with the earth mat at 2 places . The work also include welding and jointing MS flat than painting MS flat in black colour below earth level and green colour above ground level in two coats (MS flat & MS rod will be provide by the department)

Fresh earthing with 75x10/50x6mm M.S. flat at different points of 315 MVA T/F body at two points, Netural bushing of T/F,MB,RTCC including painting by green paint in two coats (M.S.Flat shall be arrange by the Department)

Jumpering of 400 KV & 220 KV side Transfomer Bushing of 315 MVA T/F with jack Bus/LAs using different type connectors and clamps/PG clamps etc. and all other associated works to complete the job.

Replacement of new diaphram of existing old deluge valve along with re-installation of deluge valve oh HD 150 NB for quick opening of flood as per max . Work pressure 10 kg/cm2 of deluge valve system .including overhauling of existing 150 NB gate valve and existing going system.

Supply and fixing of water pressure gauge as per IS specification accuracy +/- 5% including electrical connection .

Supply and installation of high velocity water spary nozzles flow capacity 3.5 kg/cm spary core angle 90 degree.

Supply and installation of quartez bulb detector (QBD) operate at 70 degree C. sensing at rated temp for actuation of the element 10-12 sec.

Supply and installation and testing of fixed diffentrial type pressure switch (Danfos/Indfos) rang 1-10 kg/cm including electrical connection .

Supply & laying of different sizes of M.S. pipe B class for fire water pipe line/support as per IS specification (IS code-1239) as per drawing enclosed. Complete with elbow Tee, Socket reducer etc. with anti-corrosive treatment along with two coats painting in PO Red colour after applying of 1 coat of red oxide primer required for completion of job, with detail as below: (In Mtr)

Supply and laying of different size of GI Pipe B Class for fire detection/ water pipe line as per specification (IS Code- 1239) as per drawing enclosed complete with elbow, Tee Socket Reducer etc . with anti-corrosive treatment along with two coats painting in PO Red colour and blue colour after applying of 1 coat of red oxide primer required for completion of job, with detail as below:: (In Mtr)

Supply & Installation of Flanges as per IS-1538 of different sizes as per drawing work include proper butt welding with pipe & Proper packing and coupling with nut & bolt.

Supply & installation testing commissioning 150 NB gate value (sluice valve/Butterfly valve) as per IS specification (IS Code: 14846) of (Zoloto/Kartar/Sir make) (In Nos)

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