AMRUT-AMURT project-Construction of shelter Bldg for 5 TPD waste tranformer Alappuzha -Elfn,-under Alappuzha Municipality.-General Electrical Work

OD53194/2026-2027:Supply, Conveyance, Installation, Testing and Commissioning of 250 KVA Unitised Sub Station comprising of HT Panel trunked with cast resin Transformer, with Load Break Switch on H T side as per technical detais furnished below. HT portion consists of 1 No. 630 A 350 MVA Air load Beak / Load Break switch suitable for 3 phase 3 wire 50 Hz system with HT HRC fuses of appropriate rating with earth switch interlock with main swithch and mechanical ON/OFF indication. Shunt trip coil for the remote operation of the Load Break switch. 250 KVA Tranformer. Technical specfication Rating 250KVA Type Cast-resin dry type Application Power distribution Duty Indoor Standard IS 11171(1985) Volt ratio HV/LV 11000/433 V Connection Delta/star Number of phase 3 Frequency 50 Hz Winding material Copper Vector Group Dyn 11 Tap changer OFF load Tapping steps -5%to+5% in2.5% Tap switch Off circuit tap changing links Insulation Class F/H Cooling A N Type of Installation Indoor "Temperature rise 90*C over an ambient of 50*C" Impedence 4.5 % Enclosure Metal enclosure to protection IP 21 Painting finish Painted with syn: paint as per ISS Fitting and Accessories to be provided Lifting lugs 2 Nos Mounting channel 1 set Rating diagram plate 1 No Earthing terminal 2 Nos HV terminal box 1 No LT terminal box 1 No RTD temp: controller 1 No TOD meter facilities (a) 5/5A ( or suggested by KSEB) 15 VA. 0.2s class accuracy cast resin CTs (b) 3 phase 3 limb 11KV/110 V, 10 VA, 0.2s class accuracy cast resin PTs with protecive fuse (c) 1 No. TOD meter test terminal block and including arrenging testing and installation of the same with KSEB test Division. Routine tests as per IS 11171 shall be done and the test certificate in original shall be submitted while they are delivered. Load test as contemplated in Is shall be contected to the satisfatcion of the department. Arrengements for the test including artificial load for the test shall be made available by the selected agency for which no additional claim will be allowed. The Transformer shall be guaranteed for 12 months from the date of commissioning.

OD53195/2026-2027:Supply, nstallation, testing and commissioning of emergency isolation push button mounted in standard I.P 65 weather proof break glass enclosure to isolate the power supply to the building in case of emergency when the face glass is broken. The push button shall be connected to the trip coil of the 11 kV LB SFU using 1.5 sq:mm 3 core copper cable.

OD53201/2026-2027:Supply installation testing and commissioning of TOD Meter, 3 Ph 4 Wire, 0.2S Class accuracy both for active and reractive power

OD53186/2026-2027:Supply,conveyance , installation, testing and commissioning of 80/5A , 15 VA, Cl . 5P10 protection type CT for low set earth fault protection wirh metalic enclosure

90.14.1.1:Fabrication, supply, conveyance, installation testing and commissioning of floor or wall mounting, dust and vermin proof, cubicle type MV panel board comprising of the following components/ devices & complying to IS 8623. Fabrication of fully partitioned, dust and vermin proof enclosure for panel assembly as per form 4 of IS 8623 (with latest amendments) using CRCA sheet as per approved design and requirement, with front and rear access facility, bus bar chambers, hinged doors for all switch gear compartments, earthing the doors using 4 sq mm braided copper conductor, providing necessary cut-outs for mounting meters, relays, indication lamps, bus bar interconnection etc, detachable covers for bus bar chamber and cable alley, powder coating the assembly after subjecting to 7 tank process etc as required. CRCA sheet alone be used for the fabrication. Angles/ flats/ slotted angles etc shall not be used for the fabrication of panel assembly. The measurments will be taken the area of the complete sheets used for panel board including partitions, folding, shrouding etc.Supply and fabrication of MV panel board using 2.00mm CRCA sheet, powder coated (excluding base frame)

90.14.2.2:Supply and providing 3mm SMC sheet as shrouding for bus interconnection / terminations etc. including required nut & bolt etc.

90.14.3.2:Supply and providing heavy duty 'A' section neoprene gasket in the panel boardU' section rubber beeding suitable for 1.60/ 2.00 mm sheet

90.14.4:Supply and fabrication conveyance and installation of base frame of panel board using 75 x 40 mm rolled steel channel (ISMC)

90.14.5:Supply and fabrication conveyance and installation of angle iron frame work for wall mounting panel board