Conversion of Deemed HT scheme into HT Scheme by adding new 11 KV 500 KVA Substation, including HT pole structure, UTS, HT LT cabling, metering and mandatory electrical, mechanical and civil works as per Electrical Inspectorate standards at Avanamcod

OD163754/2025-2026:Transportation, Supply, erection, testing and commissioning of 500 KVA Out door type Unitised substation with TECHNICAL PARTICULARS: 500 KVA out door type Unitised Sub Station consists of 500 KVA Cast Resin Transformers, Reference Standards : IS 2026/IS 11171, Type & Make of Transformer : INTRANS/UNITECH or euqivalent make Cast Resin Dry Type , Normal continuous Rating (KVA) 500, Voltage Ratio - 11 kV/433 V Rated Frequency - 50 Hz , Number of Phases – 3, Type of Cooling - AN(Air Natural), Vector Group – Dyn 11, Connections ( HV / LV) - Delta / Star, Winding Material – Copper, Type of Tap changer- Off- Circuit Tap Links, Tapings on HV side : +5% to -5% in steps of 2.5% , Class of insulation - Class F, Lamination - CRGO (M-4 Grade), Reference Ambient Temperature - 50°C, Temperature rise of windings above ambient - 90°C, Insulation level -a) Impulse withstand voltage (HV), b) Power frequency withstand voltage (HV/LV), 75 kV ( Peak), 28 kV (rms) / 3 kV (rms), Terminal Arrangement (HV/ LV) - Coupled to 11 KV HT panel / Cable Box, Fittings - Lifting lugs, winding Temperature Indicator, hooter, Rating and Diagram Plate, Earthling Terminals, , LV side cable box with 800A MCCB and HV side terminal connected to 11KV VCB panel including outdoor type 11KV,630A,26.3KA for 3 seconds Horizontal draw out type VCB fitted with manual/motor operated spring charging mechanism with 230V AC motor and motor control switch ,shunt trip coil of 24V DC, Closing coil of 24V DC, Auxiliary contact 2NO+2NC ,Mechanical ON/OFF indicator ,Mechanical operation counter, Protection CT(-5A,5P 10,15VA,11KV,110V,class .2S,25VA PT instantaneous IDMT relay with microprocessor based 3O/C+1 IEF protection relay strip heater with thermostat, Digital ammeter and digital voltmeter, Power pack of 230V AC,24V DC emergency OFF push button with HT Metering, Control Wiring with appropriate colors, Provision for receiving incoming and outgoing cable - Through bottom entry, with HT Metering (3nos CT & 1 no PT Unit), Provision for TOD Meter, All inter connections from HT switch to transformer and to LT breaker shall be given using electrolytic copper bus bar insulated wit heat shrink sleeves and tinned all the point of contacts. all internal earth connections are to be given as per standards Necessary protection shall be made for giving cable connection on the HT side as well as the LT side. Phase barriers and shrouding as per rules has to be given, Enclosure – IP54- The enclosure shall be powder coated over a suitable primer after seven tank processing. The TOD meter compartment and CT/PT unit compartment shall be fabricated to so as to enable the KSEBL authority to seal it and commissioning including warranty services, arranging the entire work till commissioning, to the satisfaction of site supervisor from/self/ or higher authorities of the Asst. Engineer in charge.

OD163378/2025-2026:Supply and erection of two pole structure consisting of 2 nos 11 mtrs long 175x85 RSJ poles and fixing the pole excluding excavation of trench and providing PCC of 1:3:6 mm of 40mm metal at bottom and RCC 1:2:4 of 20 mm metal at top with size 600x600x1980 mm and neatly plaster over the earth portion of plinth and neatly painted the pole with 2 coat aluminium paint over a coat of primer as required.

OD126057/2024-2025:Supply and fixing of channel iron 100 mm X 50 mm X 6 mm (9.56 kg per meter) for placing and fixing CT-PT unit/ABS/ Lightning arrestor using suitable size bolt and nuts , painting 2 coat epoxy paint over primer, as per directions of departmental officers

OD126058/2024-2025:Supply, conveyance, fitting and commissioning of approved make 11 KV,400 Amps, out door type gang operated Air Break triple pole switch with all necessary accessories including adequate length of GI pipe as operating lever, operating handle with insulation and locking arrangements on suitable height, with necessary clamps, nut, bolt, washer etc. as required.

OD164113/2025-2026:Supply & Providing 20 mm dia B class G.I Pipe as operating rod for the existing AB switch including making it for smooth operation of the switch.

13.10:Supplying and erection of 11 KV pin insulator complete with large steel head G.I. pin, nuts, washers etc. as required

13.13:Supplying and erection of three piece nonlinear resistor type lightning arrestor suitable for 3 wire. 11 KV overhead lines with rated voltage 9 kV (rms) with a nominal discharge current rating of 5 kA and complete with galvanized clamping arrangement, G.I. bolts, nuts, washers etc. as required.

OD163972/2025-2026:Supply, conveyance, fitting and commissioning of approved make 11 KV, Drop Out Fuse Unit with all standard accessories GI / MS channel, properly fixing on cross arm including giving connections etc. as required. set of three pieces