NIQ No- 251 /PHE(C)/BMC, Date- 02/06/2023

Temporary Laying of cable above 3½ core 90 sq.mm. and up to 3½ core 150 Sq.mm. on wall/surface including S & F MS clams with earthing attachment in 2 x 10 SWG GI (Hot Dip) Wire, making hole etc. as necy., mending good damages and painting. (for temporary line from WT-4 to WBSEDCL Sub-Station.)

Dismantling the faulty 11/433 KV 250 KVA out door type Transformer all incoming & outgoing cable end then unloading the transformer on existing platform by engagement of skilled manpower & also necessary tools & tackles as required, as per direction of EIC.

Dismantling & opening the top cover from the transformer tank including taking out of transformer oil lifting the care assembly & keeping it at a suitable place, dismantling of damaged HT coil including wire change of tools & tackles.

To cost of charges for cleaning the core by oil & baking the core coil by necessary suitable heating arrangement for until rise the IR value as per IE rule then varnishing & baking the coil assemble for re-installation, as per direction of EIC.

Complete servicing, overhauling, cleaning of Transformer tank, oil level indicators, drain cocks, vent pipe etc. & boxing up of core & coil in transformer tank including all type of electrical connection inside the tank including supply of gasket, packing, nuts bolts complete as per direction of EIC.

Supply of new transformer oil as per ISS including filling as per direction of EIC.

Transportation charges to taking out the Transformer for dismantling the Transformer part by part to repairing & replacing the old damaged spares including necessary machining works. Transportation from WT-12 pumping station to nearest workshop.

Transformer oil filtration by centrifuge de-humidification process.

Re-fitting & re-fixing of top cover along with gasket packing incl. supply of cork/rubberized gasket, with necessary bolts, nuts, washers etc. incl. re-filling & topping up Transformer oil up to the desire level as per instruction of EIC after supply & re-fixing of two set of porcelain bushing insulator for HT & LT side with brush stud along with packing washers etc. (inside & outside) incl. top cover packing complete.

Supply of following materials for above 250 KVA 11/433 KV Transformer :- i). HV Booshing.

ii). Studs with fitting Brush.

iii). Arcing Horn.

iv). Insulating materials.

v). MS Bolts, Nuts & Washers.

vi). Oil Seal & Booshing.

vii). Drain Valve.

viii). GI Nuts & Bolts.

High voltage testing of transformer winding as per IE rule & specification, 23 KVA one minute with sand, in presence of EIC.

Painting of existing old Transformer with necessary scrapping complete as per direction of EIC.

Supply & fitting-fixing of VLE type HT fuse for VLE type switch gear including less for unserviceable materials. (Make : KEBXO 20A speaker- HBE power control) As per direction of EIC.

Heat treatment of switch gear equipment to make it moisture free with the help of glowing Hi-Power incandescent lamp / halogen lamp continuously for 3 days in order to improve the insulation resistance of its power circuit complete as per direction of EIC.

Supply & fixing compressions type gland complete with brass ring for dust & moisture proof entry PVC arm. Cable & required gland box or fiber sheet (8mm)

Finishing the end of cable by crimping method incl. S & F solderless aluminium socket (Dowels make) type, anti-corrosive parts & jointing materials.

Supply & fitting fixing of 200 Amps TPN main switch for Turbine pump house panel board incoming set including all fitting materials.

Dismantling and repairing of 400 Amps MCCB for main panel and fitting fixing the same in proper position and running condition.

D.C.Eng.Co

COSMOS INDIA