Public Health Engineering Department Tender

Upgradation of LT electric sub- station along with installation of on load Tap changer Transformer and allied works at CPS Boria HT AVR 2000 KVA (11 KV / 440 Volt) : Up-gradation of existing 1000 KVA Electric Sub Station to 2000 KVA Electric Sub Station by way of Design, Supply, Installation, Testing and Commissioning of 1 No. 3 phase 2000 KVA, HT AVR Rolling Contact type, including HT/ LT Transformer complete assembled system at CPS Boria. The system comprising of HT 11 KVA Step down transformers, On load step less Rolling contact type regulator Auto wound, buck boost HT Transformer and HT/ LT Transformer conforming to IS 2026 latest amendments up to date with a separate incomer 11 KV VCB for protection. The AVR system shall have AL bus bars of appropriate current carrying capacity. The system shall have input voltage range of 8000 Volt to 12000 Volt at HT side and output voltage of 440 Volt +/- 1% at LT side with frequency of 50 Hz for unbalanced load. All the transformers of the AVR system shall be copper wound oil immersed to specified level in steel enclosed tanks pressed steel radiators mounted on bi-directional rollers with all required fittings. It includes control unit equipped with step synchronized motor with chain drive, coupling device to operator regulator unit. It shall be provided with other applicable accessories. The system shall have mode of operation automatic motorized and manual as well. The job includes making of connections on HT side including fuse link, LA sets, cable kits and other connected accessories including chemical earthing of the whole system/ equipment. In-commer VCB Panel for protection at Input: Supply, Installation, Testing and Commissioning of 1 No. 3 phase 3-pole 11 KV 630A, VCB, MDO 26.3 KA, (Manually draw out type) outdoor type with Aluminum busbar along with power Pack 230V AC & 24V DC (7AH/ above) for outdoor service conforming to IS 13118/ AEC 6227 with latest amendments up to date. The VCB panel shall be of free standing floor mounted, dust & vermin proof made out of sheet metal of suitable guage, clad cubical with proper surface finish with anti corrosion enamel paint. The break unit should be Horizontal/ Vertical isolation and horizontal draw out type, with Rolling trolley type to enable VCB Trolley to come directly on the floor from the panel when racked out from the Panel. It should have interlocking facility, protections and metering as specified. Distribution Panel: Design, Supply, Installation, Testing and Commissioning of totally enclosed single front cubical design, modular LT distribution panel made out of CRCA sheet of suitable thickness/ guage. The panel shall be dust & vermin proof, cubical design modular construction, compartmentalized fixed type wall mounted for Indoor service with proper prepared surface & anti corrosive enamel paint, suitable for 3- phase 4- wire 415 Volt 50 Hz unbalanced power system conforming to actual requirement at site. Supply, Installation, Testing & Commissioning of 1 No. 3-phase 4-pole electrically operated draw out (EDO) type 3200 Amp., 50 KA 415 Volt ACB at input of LT Distribution Panel to with stand approx the running Induction load of 1500 HP. The Outgoing Distribution of the panel shall comprise of 10 Nos. out-going terminal sets each of 3-phase 4-wire system for energizing the individual Star Delta LT control Panel of 10 Nos. of Installed Induction Motors of each of Approx. 500 HP. The connection cables from LT side of AVR system to Incoming of Distribution panel shall be provided by the Department. The Job Includes making of connections by providing & fitting of network of Al. bus bars of appropriate current carrying capacity including fixtures, fasteners, nuts, bolts, thimbles, Insulation and other accessories required as per actual at site. Civil works for the installation of complete units: Cast In-situ of RCC foundation in cement concrete mix of 1:2:4 including tor steel 10 mm dia of suitable mesh to with stand the dead load of equipments (of complete AVR system) to be installed on it. The foundation of the platform shall be minimum 1 feet BGL and having elevation minimum 1.5 feet AGL of appropriate length & breadth to accommodate the complete unit with sufficient bearing all around. The job includes fencing of the installed outdoor/equipments/ unit with chain link fencing made out of annealed G.I wire of suitable guage supported with suitable structural steel sections at appropriate spacing as per actual requirement of site. The Indoor duty unit of distribution panel shall be provided with canopy/ shed to accommodate it to protect from sun and shower. The canopy/ shed shall be made out of colored Iron sheets and suitable structural steel sections with suitable fixtures and fasteners. Excavation of cable tuct followed by RCC lining to accommodate the connection cable run from LT side of AVR system to Incoming of Distribution panel. The trench shall be covered with proper grating made out of suitable structural steel sections. The complete job on turn key basis including cost of all kinds of involved material, equipments, labour, consumables, loading, unloading and transportation. Any other item not specified/ included but required for completion/ safe & smooth operation of system are to be included in the Scope of work. Complete job on turnkey basis. The detailed specifications/ parameters are enclosed as per Technical specifications Annexures