PROVN OF DEHUMIDIFIER IN T-48, T-53 AND T-60 AT MANAURI

Supply, installation, testing and commissioning of imported SS-304 body, compression-type dehumidifier unit of 600 CFM capacity, complete in all respects, having reactivation air flow 200 CFM, comprising process air motor 0.37 kW, reactivation air motor 0.37 kW, heater 7.2 kW, suitable for operation on 3-phase, 440 Volts, 50 Hz supply, complete with reactivation blower, dehumidification section, CNC-fabricated powder-coated casing, digital humidistat, microprocessor-based controller with MODBUS (RS-485) communication, auto/manual mode selection, including 6-inch dia, 3 m long hose pipe, bird screen/guard, and all necessary accessories. The scope of work includes all associated civil works, foundation, supports, electrical interconnections, cabling, earthing, control wiring, etc., complete as per specifications and as directed by the Engineer-in-Charge. Notes for Item no. 1 1.Testing & Commissioning: The complete system shall be tested and commissioned at site after installation. The unit shall be subjected to a continuous trial run of minimum 24 hours, the cost of which shall be borne by the contractor, to ensure satisfactory performance without abnormal noise, vibration, or faults. All tests shall be carried out in presence of the Engineer-in-Charge, and defects, if any, shall be rectified by the contractor at no extra cost. The work shall be deemed complete only after successful testing and commissioning, and submission of technical literature, test certificates, Operation & Maintenance (O&M) manuals, and warranty certificates.

Supply, installation, testing and commissioning of factory assembled package type Air Conditioning unit of capacity 30,000 kcal/hr (approx. 10 TR) or nearest higher suitable capacity, suitable for operation on 3-phase, 415 Volts, 50 Hz AC supply, complete with compressor(s), air handling section, condenser, evaporator, filters, controls, and safety devices, mounted on a common base frame. Complete with cooling tower (FRP, induced draft) suitable for minimum 12 TR heat rejection capacity, and water circulation pump sets (2 Nos., 1 working + 1 standby) of adequate capacity (approx. 3–4 LPM/TR and 12–15 m head), including MS/GI piping, valves, strainers, gauges, and insulation. Including ducting with grilles/diffusers, plumbing works, electrical connections (control panel, cabling, earthing), and necessary civil works, supports, and vibration isolators, complete as directed by the Engineer-in-Charge. The contractor shall submit technical literature, test certificates, Operation & Maintenance (O&M) manuals, and warranty certificates. Warranty & Defect Liability Period: The system shall be covered under 12 months warranty from date of commissioning or 18 months from date of supply (whichever earlier). The Defect Liability Period shall be 02 years from date of completion of work, during which defects shall be rectified at no extra cost. Approved Makes:Package AC:Blue Star Limited / Voltas Limited / Daikin Airconditioning India Pvt. Ltd. Cooling Tower:Paharpur Cooling Towers Ltd. / Advance Cooling Towers Pvt. Ltd. / Delta Pumps:Kirloskar Brothers Limited / M/S Crompton greaves. / Wilo Mather and Platt Pumps Pvt. Ltd.

Supply, installation, testing and commissioning of factory assembled package type Air Conditioning unit of capacity 22,500 kcal/hr (approx. 7.5 TR) or nearest higher suitable capacity, suitable for operation on 3-phase, 415 Volts, 50 Hz AC supply, complete with compressor(s), air handling section, condenser, evaporator, filters, controls, and safety devices, mounted on a common base frame. Complete with cooling tower (FRP, induced draft) suitable for minimum 9 TR heat rejection capacity, and water circulation pump sets (2 Nos., 1 working + 1 standby) of adequate capacity (approx. 3–4 LPM/TR and 12–15 m head), including MS/GI piping, valves, strainers, gauges, and insulation. Including ducting with grilles/diffusers, plumbing works, electrical connections (control panel, cabling, earthing), and necessary civil works, supports, and vibration isolators, complete as directed by the Engineer-in-Charge. The contractor shall submit technical literature, test certificates, Operation & Maintenance (O&M) manuals, and warranty certificates. Warranty & Defect Liability Period: The system shall be covered under 12 months warranty from date of commissioning or 18 months from date of supply (whichever earlier). The Defect Liability Period shall be 02 years from date of completion of work, during which defects shall be rectified at no extra cost. Approved Makes:Package AC:Blue Star Limited / Voltas Limited / Daikin Airconditioning India Pvt. Ltd. Cooling Tower:Paharpur Cooling Towers Ltd. / Advance Cooling Towers Pvt. Ltd. / Delta Pumps:Kirloskar Brothers Limited / M/S Crompton greaves. / Wilo Mather and Platt Pumps Pvt. Ltd.

M&L for providing sub main wiring with four single core 6.00 Sqmm (nominal area) PVC Insulated flame retardant unsheathed multi stranded copper conductor cable 1100 volts grade drawing through concealed stove enamelled steel conduit complete including 6.00 Sqmm PVC insulated unsheathed multi stranded flame retardant single core copper conductor cable for earth wire including taking down/removing old one and making good distrubed surfaces of walls, floors, etc complete all as specified and directed. Note : (i) four runs of single core 6.00 Sqmm multi stranded copper cable and one run of 6.00 Sqmm earth wire and stove enamelled steel conduit 20 mm shall be measured as one run length (iii) Extra length of cable required for connection to DBs/MCBs shall deem to be included in unit rate quoted by contractor against the item (iv) Earth wire run inside the steel conduit.

Supply and fixing flame proof/weather proof plug in switch socket 32 Amp, 5 pin (4P+E) along with all accessories complete all as directed by Engr-in-Charge.

Supply, installation, testing and commissioning of air curtain of 6 feet length, suitable for mounting above door/opening, complete with high-speed blower, motor, adjustable louvers, casing, and control panel, suitable for operation on single/three phase, 230/415 Volts, 50 Hz AC supply, as required. The unit shall be provided with uniform air velocity across full width, low noise operation, and shall be suitable for preventing ingress of dust, insects, and outside air. Including mounting arrangement, brackets, supports, electrical connections, cabling, earthing, and all accessories required for proper installation and operation, complete as directed by the Engineer-in-Charge. The work shall be deemed complete after successful commissioning and submission of technical literature and test certificates. Warranty & Defect Liability Period: The unit shall be covered under 12 months warranty from date of commissioning or 18 months from date of supply (whichever earlier). The Defect Liability Period shall be 02 years from date of completion of work, during which defects shall be rectified at no extra cost.

Supply, installation, testing and commissioning of transformer of capacity 160 KVA, step down, outdoor type, copper wound, 3 phase 50 HZ, delta star, Level -2, natural oil cool, primary voltage 11000 volts, secondary voltage 433 votls with on load tap charger on primary side to vary secondary voltage ± 7.5% volts in three steps of 2.5% each with standard fittings/fixtures and complete with first fill of transformer mineral insulating oil conforming to IS 335 and all as specified and as directed by Engr-in-charge. Notes:- 1. The rates include for supplying transformers with standard fittings and installing complete including all jointing materials, connecting with electrical system, earthing,testing and commissioning. 2. The transformer will have its initial oil filling to appropriate level cost of oil including testing with desired dielectric strength included in supplied and installed rates, including positioning on trolley all as directed by Engr in Charge. 3. The transformer shall be provided with standard fittings/accessories, including but not limited to: HV and LV cable boxes with porcelain bushings, nuts, bolts, washers, and glands suitable for connections. Conservator tank with drain valve and oil level indicator. Dehydrating breather filled with silica gel (first filling included). Explosion vent. Thermometer pocket with dial-type thermometer (range up to 120 °C with maximum pointer and reset). Rating and terminal marking plate. Two earthing terminals with provision for GI strip connections. Oil level gauge. Oil drain and filter valve. Lifting lugs/hooks. Oil filter hole with cap/plug. Air relief valve/plugs. Detachable solid steel wheels / trolley arrangement for mobility as directed by Engineer-in-Charge. Neutral bushing brought out separately for independent earthing. First filling of fresh transformer oil conforming to IS standards, tested up to 60 kV dielectric strength. 4. Transformers shall be tested in accordance with IS 1180 (Part-1):2014, IS 2026 and IS 335.

Supply, installation, testing and commissioning of 11 KV, 630 Amps having short circuit capacity 20 KA/3-sec,outdoor (IP-54), RMU (Ring main unit) 2-way comprising of motorized operated Load break Switch VCB electrolytic grade copper busbars all inside single, gas-filled, robotically welded stainless steel 304 (Non Ferrite Non Magnetic Grade) tank with min. thickness 3 + 0.5 mm, IP 67 Degree of Protection, internal-arc classified 20KA/1 sec, on-site-repairable with site replacable bushing/coupling/mechanism,gas refilling etc. The enclosure shall have padlockable double-door access with anti-theft hinges, fully covering the front facia and cable boxes to ensure fail-safe anti-theft protection. The unit alongwith Bus-connected, fixed-type Auxiliary transformer shall include the following along with all necessary accessories and fittings as required at site.

(A) 01 Nos Incoming Load Break Switch module each consisting of following accessories :- (i) Each switching - unit is designed as a three position switch. This three function switch combines the function of switch-disconnector an earthing switch.(ii) 11 KV, 630 A Load Breaker Switch with interlocking line-earthing scheme both short circuit current, 21 KA for 3 sec making capacity - 50 kAp-01 No.(iii) Auxiliary contacts - 01 No + 1 NC - 01 No. (iv) Spring assisted motorized mechanism with un-inhabitted operating shaft for emergency manual operation with integrated earthing switch - 01 No (v) Cable terminals cable bushing situated not beyond 300 mm or as per OEM tested design from cable cover to allow ease of access for installation/testing with door arrangement for enhanced safety (IP54+IP3X) interlocked to prevent access of size upto 11 KV, 300 Sqmm 3 core, along with XLPE AL cable termination/End kits each set of 3 (vi) Right angle boots (push on type) Each set of 3 (vii) Arc proof cable covers having cable entry from bottom, front with interlocking mechanism including earth switch - 01 No (viii) Capacitive voltage indication fixed type system as per IEC 6123 with LED - 01 Set (ix) Fault passage indicator - it is to be provided for each incomer Load break unit, FPI with LED/digital display to be added to detection of cable dault - 01 No.(x) ON, OFF, Earth mechanical indication on the front mimic of the panel - 01 No cable cover standard - 01 (xi) Mechanical interlock to be provided for incomer to prevent simultaneously and accidently closing of both supplies.

(B) 02 Nos Outgoing VCB module each consisting of following accessories :- (i) Each function - unit consist of a vaccum - circuit breaker in combination with a three position - switch. The three-position switch fulfils the operation of the disconnector and earthing function.(ii) 11 KV, 630 Amp fixed type VCB module with series disconnector cum earthing switch of short circuit breaking current/withstand, 21 KA for 3 Sec making capacity - 50 kAp - 01 No (iii) Auxiliary contacts - 01 No + 1 NC - 01 No (iv) Stored - energy motorized high - endurance spring charging mechanism (M1+) with inbuilt spring charging lever and mechanically latched ON/OFF push - buttons to allow handle less and un-inhabited operation - 01 No (v) Cable terminals cable bushing situated not beyond 300 mm or as per OEM tested design from cable cover to allow ease of access for installation/testing with door arrangement for enhanced safety (IP54+IP3X) interlocked to prevent access up to 11 KV, 300 Sqmm, 3 core, along with XLPE AL Cable termination each set of 3. (vi) Right angle boots (push on type) Each set of 3.(vii) 3 O/C+1 E/F self powered numerical protection relay with low and high set for over current and Earth fault. Relay should have facilities to display the maximum loaded phase current also. Relay shall record minimum 5 fault records with time stamping. Relay shall be communicable with RS 485 Port on MODBUS Protocol - 01 No/per VCB outgoing. (viii) Auxiliary Relay for OTI/WTI- transformer protection - 01 No (ix) Associated ring core cast - resin insulated CTs Dual ratio 100/50/1-1 Amp (for metering and protection) for both outgoing 2.5 VA, 5 P 10 protection - Each set of 3 (x) Arc proof cable covers having cable entry from bottom, front with interlocking mechanism including earth switch - 01 No. (xi) Capacitive voltage indication fixed type system as per IEC 6123 with LED - 01 Set. (xii) ON, OFF, Earth mechanical indication on the front mimic of the panel - 01 No (xiii) Emergency trip push button - 01 No (xiv) CB mechanical operation should be min 10000 Nos without any maintenance. (xv) Vaccum Interrupter and VCB must be RMU manufacturers own make for better life cycle optimization. (xvi) CB operating sequence should be 0-0.3 sec-CO-3min_CO