Electrical Works

Amount

Supply, erection, testing, commissioning and handing over of 1 No, 125 KVA diesel generator set with AMF control panel with acoustic enclosure conforming to CPCB IV+ Norms and BIS Specifications with 0.8p.F, 3phase, 415v/420 volts, 50c/s, 159 BHP 1500 RPM complete in all respects as detailed below. 1.Engine Water cooled diesel engine suitable for generator application with a shaft output of 156BHP suitable at 1500 RPM under NTP conditions as per BSS 5414-ISO 10000, The engine shall comprise the following standard scope of supply

1) Dry type Air cleaner 2) Expansion below 3) Radiator, Radiator fan and mounting 4) Air to air charge cooler 5) Exhaust gas turbo charger 6) Lube oil cooler and lube oil filter 7) Fuel filter (Pre and micro) 8) In-line mono-block fuel injection pump with governor and fuel feed pump 9) Electric governor 10) 12V/24V battery charging alternator 11) 12V/24V Volt electric starter motor 12) Engine test certificate 13) Residential Mufler 14) Fly Wheel with starter ring.

Engine instrument panel/mounted Engine control panel consisting of ON/OFF/START/KEY, lube oil pressure gauge, oil temperature gauge, high water temperature gauge and electronic hour meter and RPM indicator. Safety system of Engine: The engines shall trip for the following conditions with Visual alarm device. 1.Low lubricating oil pressure 2.High water temperature 3.Vee-belf failure and over speed 4.low battery indication The engine should be capable of providing 10% over load for one hour for every 11 hours continuous running at full load.

2.ALTERNATOR Alternator capacity of 125KVA/100KW, AC 3phase, 50HZ, 415Volts, 0.8P.F, 4 wire self exited, self regulated design to run at 1500 RPM under NTP conditions conforming to BS 5000/IS 13364 (Part-II) 1992 to be coupled directly to the Diesel engine and test certificate (Make Kirloskar/ Cummins/ Ashok Leyland/ Greaves) 3.AMF CONTROL PANEL the AMF control panel (Cubical) should be fabricated with vermin proof and dust proof best quality sheet steel and floor mounted with removable rear panels and hinged front doors with enamel painted and incorporating the following with suitable provision for connecting incoming and outgoing leads having been made on the control panel.

Notes: This will be in addition to the battery charging alternator fitted to the Engine, 11)1 set Air break contactor with auxiliary neutral contactor for main supply. 12)1 set low voltage HRC fuse for the short circult protection of the main supply. 13)1 set alternator contactor with auxiliary neutral contactor 14)1 set three pole bimetal release for over load protection of the alternator. 15) 1 set low voltage HRC fuse for the short circuit protection of the alternator 16) 1set DC control relays incorporating engine start/stop ad failure to start/lockout.

32) Audio and visual indication arrangement for a) Low lubricating oil pressure b) High water temperature c) over speed 33) 1 No Earth fault relay 34) Isolator to Isolate the neutral Note: 1. The control panel should be complete with necessary fuses, cables, labels, other accessories with neutral isolation arrangements. 2.The engine should trip for the following conditions. a) Low lubricating oil pressure b) High water temperature c) Over speed

4.ACOUSTIC ENCLOSURE: Acoustic enclosure shall be powder coated and fabricated or 16SWG CRCA MS sheet. The silent canopy shall be nut bolt type construction Critical processes of punching are done on CNC machine to maintain dimensional accuracy of hole within 0.1mm power coating done after seven-tank surface preparation process of sheet metal. canopy panel and door shall have insid lining of FIRE-RETARDANT 65kg/m density mineral wool of 100mm thickness as acoustic material. Four hinged doors shall be provided to canopy. The maximum permissible sound pressure level should be as per the norms prescribed by the central pollution control Board/State Pollution control Board/ Competent Authority concerned or shouble be 75db (A) at 1 meter from the enclosure surface whichever is advantageous to the department. The emergency stop should beavailable on the enclosure panel. SURFACE TREATMENT–PAINTING The enclosure shall be suitably treated for degreasing, de-rusting and phospating. The canoples are passed through seven-tank treatment thoroughly.

ADDITIONAL FEATURES OF CANOPIES canopy fabricated on CNC machines with dimensional accuracy of 0.1mm so as to increase its durability. Special designed supporting rips/structures are used in canopies so as to give sturdiness and to reduce the vibrations of the DG sets if any. WORLD CLASS COOLING PACKAGE Canopies shall have cooling package for which it can perform at 45 deg c/ambient temperature. No grounding required on the ground, only a level surface capable of withstanding the DG weight. Lifting hooks shall be provided for the acoustic enclosure, which should be unloaded independently of the DG set. The Gen set frame shall also be provided wih hooks for unloading.

Temperature rise inside the canopy: Conopies shall be designed so as to maintain the temperature difference between ambient and air inlet at cleaner within the enclosure well within 5-7 dg centigrade 5) Base Frame Base frame should be fabricated in sheet metal. The base frame is rugged in construction and designed for mouning engine and brush less alternator closely coupled, with cross members mounted on AVM. The base frame shall have provision for mounting of acoustic enclosure on it. The supply of Gen set includes loading. unloading and transportation charges. 6) Fuel Tank 290 Ltrs. Removable fuel tank shall be fabricated out of 14SWGCRCA MS sheet and is part of base frame. It is duly painted and fitted with inlet an outlet connections and mechanical fuel gauge. Fuel tank can be easily removed for cleaning of any maintenance. 7) Battery 2 Nos 12V 180 AH batter Exide make (SR)

ERECTION, TESTING AND COMMISSIONING: Providing suitable concrete foundation with cement concrete 1:2:4 with sand cushion all around the foundation for erection of 125KVA Diesel Generator set.

Supply and Laying of 3 1/2 x 120 sq.mm. PVC armoured LTUG cable in suitable size HDPE pipe in a trench to be excavated at a depth of 0.75 metre and refilling the earth to make good.(SD-673)

Supply and clarnping of 3 1/2 x 120 sq.mm. PVC LTUG armoured cable on post or on wall with MS clamps. (SD-210)

Supply and fixing of brass cable gland for 3-1/2 x 120 sq.mm. PVC armoured LTUG cable with earth connection (SD-169)

Supply and providing cable end termination of 3-1/2 x 120 sq.mm. PVC LTUG aluminium armoured cable with necessary aluminium cable sockets by crimping etc with electrical connection complete. (SD-228)

Earthing as per the ISI specification with an earth electrode of 2.10 metre Class 'B' GI pipe of dia not less than 40mm with copper earth plate of size 125mm x 50mm x 6mm with necessary unneling arrangements with necessary masonry work and with 38mm RCC cover slab for the brick masonry(SD-221)

Supply and run of 25mm x 6mm tinned copper flat with necessary clamps / supports on wall / floor / ground for earth connection(SD-77)

Sathyanarayana Electricals (BID ID -1558215)