Construction of downstream network for EBuses Charging Port comprising of substations 9x 630 KVA 11 0.4KV and associated HTLT network at Bhagwati Nagar falling under the jurisdiction of Electric Sub Division Canal JPDCL Jammu on turnkey basis

Supply, Installation & commissioning of 630 kVA Distribution Transformer (DT) out door type equipped with an On-Load Tap Changer (OLTC) is designed for EV Charging applications, providing automatic voltage regulation without interrupting the power supply. These units typically feature copper windings, CRGO silicon steel cores, and operate using ONAN (Oil Natural Air Natural) cooling. Key Specifications for 630 kVA OLTC Transformers Capacity: 630 kVA (Three-phase) Voltage Ratio: 11 kV/415 V OLTC Range: Typically +5% to -15% in 1.25% steps Vector Group: Usually Dyn11 Impedance: Approximately 4.5% to 6% Cooling: ONAN (Oil Natural Air Natural) Standards: IS 1180 / IS 2026 / IEC 60076 Losses: Designed with low no-load and load losses (To be submitted during detailed Engineering ) OLTC and Connection Features Function: The OLTC regulates output voltage, compensating for input fluctuations to maintain a stable 415V output. Motor Drive Unit (MDU): Operates under load via an Automated Voltage Regulator (AVR). Installation: Suitable for outdoor, plinth-mounted applications, featuring robust porcelain bushings. Protection: Includes Buchholz relay, pressure relief device, and silica gel breather for safety.

Supply & Fixing of Gapless Surge Arrestor,9 kV ,10 kA ,LA with polymer housing, Stn. Type

Supply, Installation, Testing & Commissioning of 11 kV Horn Gap Fuse Set 3 Phase 200A

Providing of 9Mtr Long Pole , ST-410 SP33

Providing of GI Channel/angle/Flat of sizes including clamps

Providing of Earthing of substation --Excavation of earth pit of dia 650 mm & depth 3000 mm, installation of Earthing pipe of 40 mm Nominal bore & 4mm wall thickness & length 2.5 mtr long as Per IS 1239.GI Strip for neutral earthing of size 25 mm x 3 mm for connection of transformer body,G.O Set & lightening arrestor as per IS 2629/85, GI nuts & bolts,refilled with earth enhancement materials and earth Chamber made of brick masonary with RCC slab cover.

Providing & Fixing of Galvanised Stay Set with 50 x 8 mm Stay Clamp, Guy Insulator (2 Nos), Anchoring Plate (200 x 200 x 6 mm), Nut & Bolts, 2 No Turn Buckle, 1.8m long, 16 mm diameter solid Stay Rod & 7/3.15 mm dia stranded wire complete

Providing & Fixing of Danger Plates with Clamps

Providing of Cement bottoming 1:2:4 mix as per REC standards 0.4 cum/pole

Painting Of Poles Aluminium Paint

RCC Platform/ Bed for placing the transformer for 630 KVA Transformer as per approved design including GI mesh fencing of 6 feet height complete job (Design to be finalized during detailed Engineering )

Sundry items like Aluminuim Lugs, Jumpers, Binding tape

Steel Tubular Pole 9.0 Mtr long (ST-410 SP-33) including excavation of pit and back filling of soil & consolidating by ramming, watering etc.

11 kV Ring Main Unit (RMU) is a compact, SF6 gas-insulated or solid-dielectric switchgear designed for indoor/outdoor secondary distribution networks (11 kV, 3-phase, 50 Hz). It typically features 630A Load Break Switches (LBS) for incoming/outgoing lines and 200A/630A Vacuum Circuit Breakers (VCB) with protection relays for transformer feeders.

GI Channel,Angle and flat iron

11kv outdore heat shrinkable cable termination kit 185mm2

Galvanized Nuts and Bolts

Anti-Climbing Device with clamps

Red Oxide

Cement bottoming 1:2:4 mix as per REC Standard .45 cum/ pole

Galvanised Stay Set with 50 x 8 mm Stay Clamp, Guy Insulator (2 Nos), Anchoring Plate (200 x 200 x 6 mm), Nut & Bolts, 2 No Turn Buckle, 1.8m long, 16 mm diameter solid GS Stay Rod & 7/3.15 mm dia GI stranded wire complete

Minor land development works such as Bush cutting , Earth filling etc at site to be made available by JSCL (Jammu Smart City Limited)

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