SPECIAL REPAIRS AND REPLACEMENT UPGRADATION OF 03 NOS 1000 KVA BER TRANSFORMERS UNDER C NO 64 AT NAVAL DOCKYARD UNDER GE (NW) KUNJALI COLABA MUMBAI

Amount

Supply, fixing, testing and commissioning of 1000 kVA 11000-6600/ 415 volts 3 ph 50 Hz AC, ONAN oil immersed outdoor type copper windings dual ratio distribution transformers DELTA/STAR connected having a vector group reference of DYN11. tappings +5 /- 15 % .The temp rise of 50/55 degree Centigrade for oil/windings over an ambient of 40 degree Centigrade ,the transformers will be supplied with all the standard fittings and accessories including first of oil & LV cable box. Transformers will be manufactured as per latest IS-2026 -1991 & latest. LOSSES: Losses as per IS -1180-2014 & latest FITTINGS AND ACCESSORIES: a) 12kV Externally hand operated off circuit tap changing switch with locking device b) Oil conservator tank with drain plug and filling cap. c) Silica Gel dehydrating breather charged with silica gel. d) Oil Level gauge. e) Oil Filter valve & Oil drain valve. g) Thermometer Pocket. h) Diagram and rating Plate. 1) Two earthing arrangements. j) Lifting Lugs. k) Four bidirectional Plain roller I) Air vent Plug. m) Explosion vent. n) cooling radiators o) Cable box on H.V side. p) Cable box on L.V side. q) Additional neutral terminal. `

Supply and fixing in repairs JEF ECO SAFE Maintenance Free Grounding Solution set comprising of High tensile low carbon steel rod of 3 mtr length & 32 mm dia with 250 micron ( average ) molecularly bonded copper on the outer surface to confirm with requirements of UL467 along with Back-fill compound strictly to be a Carbon based conductive concrete type which has a resistivity of less than 0.12 Ohm mtr as per Clause 14.5D of IEEE : 80 standard. Back-fill compound should be electronically conductive ( Like in metals ) and should not depend on moisture for conduction. JEF ECO SAFE compound shall be supplied in 50 Pound Bag. ( 1 Bag required per earthing set). Back-fill compound should be environment friendly, should solidify when mixed with water and set like concrete and should not leach / diffuse into the ground. A suitable earth terminaton clamp should also be supplied along with the set including Supply and fixing of Eco Friendly weather proof High Density Polyethylene Earth Pit Chamber complete all as specified and directed by the Engr-in-charge. Note : Back-fill compund shall not be mixed with any soil while pouring in the bore hole.

Material and Labour for earth continuity conductor or main earthing lead of size 32mm x 6mm copper strip fixed to wall on batten or recess or chases or buried in ground or drawn in conduit/pipe or fixed to poles or any other as indicated or as per situation etc. duly screwed / saddled as required at site and connecting up complete all as specified and directed by the Engr-in-charge.

Supply and Fixing in repair Cable jointing kit for 11 KV (Earthed) grade cable for indoor termination cold shrink type joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 120sqmm to 400sqmm

Chakshu Enterprise

BRITE INDUSTRIES

M/S National Electrical and Electronics Services

Shree Ayyappa Engineering

AGRAWAL ASSOCIATES

C S Sharma and Co

Veer High Tech Solution

NARMARAJ ELECTRICALS