SPL REPAIR WITH REPLACEMENT OF 100 KVA GENR SET AGAINST UNSV (BER) GENR SET AT 734 TPT WKSP UNDER GE (WEST) PATHANKOT

Supply,install ,testing, commissioning of 'Silent type' diesel generating set alongwith prime power having rating of 100 kVA, 415Volts at 1500RPM , 0.8 lagging power factor at 415 volts suitable for 50 HZ 3 phase system and for 0.85 load factor ,CPCB-IV + or latest norms complied, with acoustic enclosure,realay panel for automatic starting on main failure(AMF), anti vibration mountings,control panel and foundation.The DG set should be robust in construction factory tested and assembled to ensure perfect alignment of Engine and Alternator on a common base frame.The DG set power rating indicated above is inclusive of altitude correction factor . DG Set shall be designed and suitable to operate as per tropical condition of PATHANKOT station and for more details on service condition refer particualr specification.The DG set shall be comprising of following item as under:-

(a)Diesel Engine : The diesel engine shall be four cylinder / stroke cycle multi-cylinder,direct injection water cooled, turbo charged with after cooler, Air to air aftercooling and optimised turbocharger for increased altitude capabilities with suitable BHP developing required to run alternator of 100 KVA capacaity @ 1500 rpm under NTP condition of BS 5514/ISO 3046 with an over load capacity of 110% for one hour in any specified 12 hrs of continuous operation,suitable for generating set application on AMF mode.The engine shall confirm to IS:10000/BS:649/BS 5514/ISO 3046.The engine shall have the following accessories: Cooling fan and radiator.DM water cooling systems with pre-mix anti-corrosive additive Turbocharger. Fly wheel with fly wheel housing. Electrical engine starter motor (disengagement after start-up) with Batteries. Battery charging systems. Stainless steel exhaust flexible elbow. Thermal sealing of exhaust pipe and aluminium cladding for complete exhaust pipe and silencer. Required filters for fuel, lube oil, air etc. Sets of flexible hoses as required. Suitable rubber coupling to Alternator with guard. Suitable Engine controller for protection of the engine. Coolant heater and crankcase heater. Oil drain Pump. Heavy duty air cleaner all as required as per CPCB norms.

(b) Engine protections: (i) High coolant temperature warning & trip (ii)Low lubricating oil pressure warning & trip (iii) Low coolant level warning & trip(iv) Fail to crank trip (v) Over crank trip (vi) High and Low speed trip (vii) Low or High battery voltage alarms.(viii) Clogged filter warning and Lack of fuel (ix) High Canopy Temperature(x) Set fail to start protection after failure of the set to start after successful three consecutive start attempts.

(c)Starting system :The engine starting shall be by means of totally enclosed axial type electric starter suitable for 12 volts / 24 volts DC starting system comprising of starter motor, voltage regulator and arrangement for initail exciation complete with suitable number of batteries as per company's design and it should be Sealed Maintenance Free (SMF) Lead-Acid type as required as per specifications including copper conductor battery leads of required length and socket/clamps

(d ) Alternator : 100 KVA 3 phase 0.8 PF 415V, 4 wire 1500 rpm self-excited and self regulated through AVR confirming to IS :4722/BS 2613 suitable for tropical condition with brush less exciter, housed in screen protected drip proof enclosure. The alternator shall be confirming to IS 13364 Part-2 & IS 15999 Part-1/ IEC 60034 Part-1 capable of delivering rated output at rated power factor with,a. Terminal voltage differing from the rated value by not more than +/- 5%. b. Frequency differing from the rated value by not more than +/-0.5%. c. Short circuit capacity of 300% for 10 seconds. d. Over load capacity of 110% for one hour. The insulation class of the Alternator shall be class F/ H. The temperature rise shall be limited to class B and Ingresses enclosure protection shall IP23 or better. The alternator shall be fitted with suitable Nos. Resistance Temperature Device (RTD) & Bearing Temperature Device (BTD) along with space heaters.

(e) Alternator Protection :Alternator should have following protections  Over and Under voltage  Under and Over frequency warning and trip  Loss of excitation  Over current and Earth Fault and Short Circuit Protection  Unbalanced loads  Restricted Earth Fault Protection. Differential protection. Diode Failure.

(f) Voltage regulator :A rapid response voltage regulator shall be provided to regulate the generated voltage.The overall regulations from no load to full load,including cold to hot variation and load power factor of 0.8 lag to unity shall be within 2% of the normal voltage. The excitation system shall be designed to promote rapid voltage recovery following sudden application and disconnection of load.

(g) Acoustic enclousure : The acoustic enclosure should be supplied along with DG set from the manufacturer outlet itself as per CPCB norm.Acoustic enclosure shall be of powder coated and fabricated out of 2 mm thick CRCA MS sheet. The canopy shall have four hinged doors, one door with glass window to view proper parameters on the control panel. The canopy and doors shall have inside lining of fire retardant foam/glasswool as acoustic materials. The base frame shall be fabricated in ISMC channel or in sheet metal, with lifting hooks for convenient lifting of complete set i.e. along with canopy, engine and alternator. The sound level shall have less than 75 db (A) at a distance of 1 meter.High quality noise absorbant and fire-retardant grade acoustic Insulation material (P.U. Foam) complying to IS 8183. The allowable temperature raise inside the canopy is 5 to 7 deg. Centigrade. The Measurement of noise should be as per ISO 3744/ ISO 8528 (Part 10) standard.The canopy has the provision of emergency push button, external to the canopy

(h) Governor :The governor shall be of electronic type suitable for monitoring constant engine speed within the specified limits for auto parallel and auto load sharing operation.

(j) Exhaust : The exhaust piping system shall be supplied with a hospital grade silencer and catalytic converter suitably optimized to meet stringent noise emission standards laid down by MoEF / CPCB (as per CPCB-IV + ).The exhaust piping and the silencer shall be wrapped with fiber glass, basalt or ceramic fiber (typically up to two inches wide with stainless steel metal zip ties or hose clamps to undermine vibrations etc. The outside of the wrapping should be covered with neatly wrapping with aluminum cladding or high temperature silicon/ceramic coating. The exhaust line shall be extended beyond the height of the utility building roof as required by pollution control norms. Suitable supporting structure for installation shall be provided.