E. Qui ñònh ñòa phöông, luaät, laép ñaët ñieàu chænh, thaåm tra vaät lieäu vaø kieåm tra
16200 - 1 EMERGENCY GENERATOR SET
E. Local Ordinances, Rules, Regulations covering installation, material inspection and testing.
F. Emission value of diesel engine : in accordance with TA-Luft or EURI-II standard.
1.3 SYSTEM DESCRIPTION
A. Diesel generator system, incorporated with paralleling switchgear to provide source of emergency power.
B. System Capacity: as indicated at 0.8 power factor lagging, at sea level and ambient temperature up to 40o C, continuous or prime rating using engine mounted radiator.
C. Operation: In accordance with ANSI/NFPA99
1.4 SUBMITTALS
A. Submit product data indicating unit ratings, dimension and finished.
B. Submit factory test report which shall be performed on each generator set and control panel at manufacturer's factory.
C. Submit shop drawing showing acoustic-treatment of the generator room.
D. Submit shop drawing showing electrical diagrams including schematic and interconnection diagrams.
E. Submit statement of compliance. Any deviation from the basic requirement shall be considered only when it renders more superiority in performance.
F. Giaù trò toûa nhieät cuûa ñoäng cô diesen: theo TA-Luft hay tieâu chuaån EURI-II.
1.3 MOÂ TAÛ HEÄ THOÁNG
A Heä thoáng maùy phaùt diesel, keát hôïp vôùi cô caáu chuyeån maïch song song, ñeå cung caáp nguoàn naêng löôïng khan.
F. Submit manufacturer's installation instructions and shop drawing showing the installation method of the generator set and accessories.
1.5 PROJECT RECORD DOCUMENT
A. Submit record of supply and installation in Thailand of the generator set with same size and larger.
1.6 OPERATION AND MAINTENANCE DATA
A. Submit operation and maintenance data include instructions for normal operation, routine maintenance requirements , service manuals for engine and day tank, oil sampling and analysis for engine wear, and emergency maintenance procedures.
1.7 QUALIFICATIONS
A. Manufacturer: Company specializing in packaged engine generator system with minimum three years documented experience.
B. Supplier: Authorized distributor of generator in Thailand shall be responsible for providing all service facilities and spare parts.
1.8DELIVERY, STORAGE, AND HANDLING
A. Delivery generator set and accessories to site and the materials shall be accepted on site in crates and verified damage.
B. Store and protect products from dirt and moisture by securely wrapping in heavy
NOTE The generator set must be manufactured in completed unit from the original countries, the assembly with no certification from original factory will not acceptable.
2.2 ENGINE GENERATOR SET
A. General : Each generator set shall consist of one engine including one radiator, one exciter and one alternator mounted on a steel base.The voltage regulator, switchgear, and control system, accessories shall be mounted on a control panel. The generator set shall be factory assembled and aligned accurately on the steel base. Which shall be strong and rigid enough to ensure permanent alignment of all rotating units and prevent vibrationbuild up and shall permit skidding in any direction during installation.
B. Rating : Rating shall be as follows:
1. Number of sets required: AS INDICATED
2. Out put not less than: AS INDICATED and shall be prime rating
3. Power factor, lagging : 0.8
4. Speed :1500 rpm.
5. Frequency : 50 HZ.
6. Voltage : 80/220 V. or same as utility power
7.
8. Cylinders Type: 12-16 cylinder with turbocharger air to air change cooler
various applications on the basis of 75% load acceptance in a single step from an initial start up condition. Voltage dip < 10%
11.
a. AmbienTb. Relative
humidity 90%c. Altitude
C. Voltage Regulation : With the engine governing within limit specified above and incorporated with electronic control circuit in automatic voltage regulator, the voltage regulation, at any balanced steady load between no load and full loadat any load power factor from 0.8 to 1 lagging, at any normal service condition of temperature and inclusive of speed variation not exceed 4 1/2 % shall not exceed the limit +/- 0.5% of rated voltage. The instantaneous voltage variation shall be less than 25% of rated voltage when 3phase full load is applied to or removed from the generator set. Recovery to stable operation shall occur within 2 seconds. Other performance deviated from above specified values shall be accepted for consideration only when it renders to the best benefit to the Owner.
D. Frequency Regulation : As defined by engine governor performance.
E. Total Harmonic Content : The line voltage waveform shall have total harmonic content not exceed 3 % of the fundamental under all operating condition.
F. Motor starting an overload capacity equivalent to between 160% and 300% of full load.
11. Ñieàu kieän moâi tröôøng:a. Nhieät ñoä xung quanh 40°cb. Ñoä aåm lieân quan 90%c. Cao ñoä möïc nöôùc bieån
1. The completed generator set shall meet or exceed the following performance criteria:Voltage regulation shall be + 0.5 percent rated voltage.
Steady state voltage stability + 0.5 percent rated voltage.
Maximum voltage dip with step application of rated continuous engine generator rating at 0.8 power factor not to exceed 20 percent.
Voltage recovery time with step application of rated continuous engine generator rating at 0.8 power factor not to exceed 4 seconds.
Balanced telephone interference factor (TIF) shall not exceed 50.
Frequency regulation from no load to full load adjustable from isochronous to 5 percent.
Steady state frequency stability shall be + 0.25 HZ
Generator set shall be capable of start-up and accepting rated load within 10 seconds.
2.3 ENGINE
A. Type : Engine shall be a general purpose continuous service diesel for stationary applicationsThe engine shall be the standard product of the manufacturer, a current production model complete with all auxiliaries normally furnished, and shall provide sufficient power to drive the coupled alternator. The engine shall be compression ignition type, watercooled turbo - charged with or without intercooler, 4 stroke cycle, direct injection high pressure Common-Rail injection system, multi cylinder, V Congeal 90o type with removable cylinder liner, designed for
A. Loaïi: laø moät ñoäng cô chaïy baèng diesen lieân tuïc ñeå ñaùp öùng coá ñònh. Ñoäng cô laø saûn phaåm tieâu chuaån cuûa nhaø saûn xuaát, laø kieåu saûn phaåm hieän haønh hoaøn thieän bình thöôøng vaø cung caáp ñieän ñaày ñuû ñeå ñeå phaùt ra doøng ñieän xoay chieàu. Ñoäng cô laø loaïi ñaùnh löûa neùn, naïp ñieän baèng tuabin coù hay khoâng coù thuøng laøm laïnh beân trong, chu trình 4 thì, heä thoáng phun chung – Heä pittoâng, xylanh ña keânh, loaïi congeal V 900 coù lôùp loùt xylanh thaùo rôøi, ñöôïc thieát keá cho coâng trình coâng nghieäp.
B. Maùy ñieàu toác: toác ñoä ñoäng cô ñöôïc ñieàu khieån baèng maùy ñieàu toác ñieän ñeå duy trì toác ñoä taïi thôøi gian baèng nhau roõ
16200 - 7 EMERGENCY GENERATOR SET
industrial use.
B. Governor : The engine speed shall be governed by an electronic governor to maintain governed speed at precise isochronous control for 1500 rpm operation. The governor shall provide adjustable speed setting 10 % and permit automatic parallel operation and load sharing with other generator set. The frequency at any constant load including no load shall remain within a steady state band width of +/- 0.25 % of rated frequency . Application and removal of rated load shall allow in transientfrequency change not exceeding 10 % and recover to 3 % change within 10 seconds. Other performance deviated from above specified values shall be accepted for consideration only when it renders to the best benefit to the Owner.
C. Turbocharger: Shall be of the turbine type driven by exhaust gas from the engine cylinders and direct -connected to a blower that supplies air to the engine intake manifolds. The turbocharger shall be pressure - lubricated. All necessary supports and connections shall be provided.
D. Intercoolers : For cooling the intake air from turbochargers shall be of the tubular heat exchanger type. All necessary intercoolingequipment including valves, controls and integral piping shall be provided.
E. Vibration Limitation : The engine generator set shall be equipped with vibration absorber to be free of damaging flexural vibrations and dangerous torsional critical speed.
F. Fuel System : Shall consist of a storage
raøng ñoái vôùi hoaït ñoäng 1500 rpm. Maùy ñieàu toác cung caáp laép ñaët toác ñoä ñieàu chænh 10% vaø cho pheùp hoaït ñoäng song song töï ñoäng vaø phaân chia taûi cho maùy phaùt ñieän khaùc. Taàn soá taïi baát kyø taûi troïng haèng soá naøo goàm khoâng taûi giöõ nguyeân chieàu roäng daûi trong tình traïng ñuùng +/- 0.25% taàn soá ñònh möùc. ÖÙng duïng vaø di chuyeån taûi ñònh möùc cho pheùp hoaït ñoäng taïm thôøi bò leäch töø caùc giaù trò chæ ñònh ñöôïc ñoàng yù cho xem xeùt khi noù ñöa ra lôïi ích toát nhaát cho chuû ñaàu tö.
1. Boàn chöùa nhieân lieäu: coù dung tích 10.000 lit vaø vò trí chính xaùc treân baûn veõ. Nhoû nhaát cuûa thuøng: goàm moät oáng
16200 - 8 EMERGENCY GENERATOR SET
tank fuel transfer pump, dual filtering system, day tank and engine fuel pump.
1. Fuel Storage Tank : Shall have the capacity of 7,000 Litre and location shown on the Drawings. As a minimum, the tank shall include a fill pipe, vent pipe, fuel gauge and an overflow return line from the day tank. Tank protective coating shall be provided.
2. Fillpoint calimate : Shall be wall mounted type consist of 2- BSP valve, contents gavge, will alarm and shall be installed where the oil truck accessible.
3. Fuel Transfer Pump : An electric, motor driven, automatic transfer pump shall be utilized to pump fuel from the storage tank to day tank. The pump shall be controlled by high and low level switches in the day tank., the pump shall be explosion proof.
4. Fuel Filtering System : Shall consist of a strainer, located between the storage tank and fuel transfer pump and a duplex filter, located between the engine fuel pump and the engine. The filtering system shall be easily accessible for quick and easy replacement of the filter element and cleaning of the strainer.
5. Day Tank : Shall be mounted on non combustible supports near the engine to provide an immediate fuel supply to the engine fuel pump and shall be situated so that the fuel level in the day tank above the engine injection pump. A flexible suction line to the engine, an excess fuel return line from the engine to the day tank, a vent, a drain pipe, an overflow return line to the bulk m storage tank and high-low transfer pump shall be completely provided. Capacity is to supply engine at rated power not
6. Engine Fuel Pump : Shall be a positive displacement, engine driven pump capable of supplying an adequate quantity of fuel to the engine under all operational conditions. Solenoid shut-off valve in fuel discharge line shall be interlocked emergency shutdown circuitry., the pump shall be explosion proof.
7. Leak Detection System : Storage tank shall be monitored by leak detection system which indicates by audible and visual alarms the occurrence of a leak in any part of either tank shell.
8. Level Monitoring: Storage tank and day tank shall be monitor by level monitoring system and interface to SCADA system.
G. Lubrication : The engine shall be provided with a complete lubricating oil system, pressurized by an engine-driven oil pump. A relief valve for oil pressure regulation and a gauge or dip-stick for oil level indication shall be furnished.
1. Filtering : Full flow oil filters with replaceable element including a spring loaded bypass valve to ensure oil circulation, if filter are clogged, conveniently located for servicing, shall be provided.
2. Oil Cooling : An oil cooler, if necessary shall be incorporated within the lubricating system.
H. Engine Cooling System : Shall be water cooled, pressurized system having sufficient capacity for cooling the engine during engine operation at full load at ambient temperature 40o C. 1. Radiator Cooling : An engine - mounted radiator or separated radiator with an engine driven pusher fan or electrical
truyeàn ñoäng cô coù khaû naêng cung caáp soá löôïng ñaày ñuû nhieân lieäu ñeán ñoäng cô theo taát caû ñieàu kieän hoaït ñoäng. Van khoùa lieân ñoäng trong ñöôøng naïp nhieân lieäu ñöôïc khoùa trong voøng ngöng taïm thôøi maùy bôm laø choáng noå
H. Heä thoáng laøm nguoäi ñoäng cô: laøm nguoäi baèng nöôùc, heä thoáng ñieàu aùp coù coâng suaát ñaày ñuû cho vieäc laøm nguoäi ñoäng cô trong suoát hoaït ñoäng ñoäng cô taïi taûi ñaày taïi nhieät ñoä xung quanh 400C. 1. Laøm nguoäi boä taûn nhieät: ñoäng cô laép boä taûn nhieät hay boä taûn nhieät rieâng bieät coù quaït maùy truyeàn ñoäng cô hay
16200 - 10 EMERGENCY GENERATOR SET
motor fan capable of maintaining a 15o F temperature differential between inlet and outlet water. The driving belt shall be enclosed in fan Cowling and hand protection guard.
2. Raw-Water Circulating Pump : Shall be an engine driven centrifugal pump with an automatic controlled by-pass valve to maintain the engine at recommended temperature level and to assist rapid heat up after starting maneuver.
3. Provide remoted radiator if ventilation can’t sufficient for cooling. (provide if indicated)
I. Air - Intake System.
1. Air Filter : The engine air - intake opening shall be equipped with an effective, easily cleaned air filter which is capable of removing all material down to 100 micron. The filter unit shall be easily removable to allow replacement of filter element.
2. Silencer : For suppression of high frequency sounds which as capable of reducing the sound level at the air intake to a point that is acceptable for residential use.
J. Exhaust System : Shall be complete with separate system for each engine and shall include a flexible section, a muffler and exhaust piping graded away from the engine to the outside.
1. Flexible exhaust section : Shall consist of convoluted seamless tube without joints or packing and be capable for absorbing vibration from the engine and thermal expansion and contraction of exhaust piping.
2. Exhaust muffler : Shall be of the chamber typeconstructed of welded steel. Each muffler shall be provided with eyebolts, lugs, flanges, or other items necessary for mounting. Pressure drop through the muffler shall not exceed the recommendations of the engine manufacturer. Outside mufflers shall be zinc coated.
3. Exhaust Silencer Critical Type : Shall reduce the exhaust sound spectrum between low frequency band (20-75 HZ.) and high frequency band (4,800-10 KHZ) to below 37-40 dB, used full engine load.
4. Exhaust System Installation : The exhaust piping shall be securely supported, prevented from rain entering the outlet pipe and shall incorporate a condenser trap and drain valve in exhaust piping. All part of the exhaust system shall be insulated with sufficient non-flammable insulation covering to prevent heat dissipation and burns from accidental contact.
5.Maximum Allowable silence pressure drop 2 Kpa
K. Starting System : The engine shall be equipped with an electric starting system which is arranged for fully automatic starting upon the failure of any phase of the main power supply.
1.Battery : The storage battery shall be a lead acid, sealed-in plastic for maintenance free type complete with battery rack and intercell connectors. The battery shall be of sufficient capacity, at ambient temperature of 40o C. to provide at least 4 cranking periods of 30 seconds each, with 2-minute rest between cranks.
2. Battery Charger : A current-limiting battery charger shall be furnished to automatically recharge the batteries. The charger shall be capable of a high charge
rate for recharging fully depleted batteries within 8 hours, and a low charge rate for maintaining the batteries in prime starting condition. An ammeter shall be provided to indicate charging rate.
3. Exerciser : An automatic plant exerciser timer shall be provided to permit periodic operation of the standby generator set.
L. Piping and Fittings : Pipe anchors, pipesleeves, Plates, flashing and flexible pipe connector shall be provided for pipe installation.
M. Safety System:
1. Shutdown controls : The engine shall equipped with automatic safety controls, switches and circuitry which shutdown the engine and open the generator circuit breaker immediately, in the event of low lubricating oil pressure, high jacket - water temperature, engine overspeed and engine underspeed.
2. Alarm System : The safety systemincorporate visual-audio alarm signals that become operational before engine shutdown and corresponding device activates.
3. Time Delay Device : Shall be installed in automatic cranking tuû ñieän for automatic start stop operation of generator set. The time delay relay shall by-pass the low oil-pressure shutdown switch during cranking and return oilpressure switch to the circuit after engine starts.
N. Flywheel : Shall be statically and dynamically balanced and capable of being rotated at 125 percent of rated speed without damage.
O. Engine Instrumentation : The engine
ñoäng vaøo aéc qui. Boä naïp coù khaû naêng naïp vôùi toác ñoä cao cho vieäc naïp laïi ñaày ñuû aéc qui ñaõ xaûy ra trong voøng 8 tieáng vaø tyû leä naïp thaáp cho vieäc baûo trì aéc qui trong ñieàu kieän khôûi ñoäng ñaàu tieân. Ampe keá seõ hieån thò doøng ñieän ñònh möùc naïp vaøo.
3. Thieát bò thôøi gian treãø: ñöôïc laép treân tuû ñieän chu kyø quay tay töï ñoäng ñoái vôùi hoaït ñoäng töï ñoäng cuûa maùy phaùt ñieän. Role treã giôø seõ ñi voøng qua coâng taéc ñoùng taïm thôøi aùp suaát daàu thaáp trong suoát chu kyø quay tay vaø aùp suaát daàu trôn laïi ñeán maïch sau khi ñoäng cô khôûi ñoäng.
16200 - 13 EMERGENCY GENERATOR SET
instrument tuû ñieän which is attached to the engine by vibration absorbing type mountings shall contain the following items for proper engine surveillance and maintenance:
1. Cooling water temperature gauge or thermometer
2. Lubricating oil pressure gauge
3. Running time meter
4. Tachometer
5. Emergency stop switch
6. Key switch for manual start
7. Automatic shutdown alarm
2.4 ALTERNATOR
A. Construction : The alternator shall be directly coupled to the engine flywheel through a flexible driving disc for positive alignmentThe alternator housing shall be bolted directly to the engine flywheel housing and shall have single or double bearing, prepacked with lubricant, support for the rotor which shall be statically and dynamically balanced. Foot mounting and lifting points shallarranged around the center of gravity. The alternator shall be protected and enclosed in drip-proof casing with balanced cooling fan.
B. Excitation : The field excitation shall be performed by a rotating three phase AC exciter and a brushless rotating silicon diode rectifier with surge protector assembly mounted on the rotor shaft. Constant output voltage control shall be achieved transistorized automatic voltage regulator which adjusts the exciter field current to
compensate for all variations. The voltage regulator shall maintain the voltage within the limits of plus or minus 0.5 percent from no load to full load.
C. Insulation : The alternator shall be suitably treated for operation under tropical climate. All windings shall be impregnated with epoxy resin of thermosetting insulation vanish to establish class H insulation.
D. Voltage Regulator : Shall be of static solid statetype three phase with silicon diode control. A device for manual adjustment of regulated voltage shall be provided and shall extend a range of 10 percent above and below rated voltage under all operating conditions. A manual automatic switch shall permit selection of manual and automatic control of voltage.
E. Overload Capability : A compound circuit incorporated in the system shall ensure additional excitation during motor starting duties and fault condition.
F. Parallel Operation : Fully inter-connected pole face damping windings shall be incorporated to ensure smooth operation. An automatic load sharing device shall be provided for quadrature current compounding in conjunction with the specified electronic governor to enable generator set to run satisfactorily in parallel with utility.
G. Non-linear Load: The Alternator shall be furnished together with special control system to enable the
set to deliver the output power for the non linear load up to 40% of rated output without effecting to its performance. (Less waveform distortion).
H. Radio and Telephone Interference : An appropriated radio, telephone frequency interference and line disturbance suppression circuits shall be provided.
I. Exciter field power shall be provided by a separate to the brushless exciter. Provide sufficient power to the excitations system to produce 250% short circuit from the main operator armature during a three phase fault with sufficient duration for protective devices to operate.
2.5 GENERATOR CONTROL BOARD
A. Generator control board shall be provided which incorporated complete controls for all function of the set. The control board shall be free standing, floor mounting, suitably ventilated, bottom or top entry with front access and constructed with heavy gauge, corrosion resisting material coated steel sheet. Full width lockable hinged door shall be provided to allow an accessibility to all internal and front mounted instruments and components. The control board shall be painted with acrylic stove enamel finish. The wiring in the control board shall be loomed and clipped to a high standard workmanship. All wire and cable end shall be clearly identified with markers. The control board shall contain the
microprocessor incorporated with relays, switching and other devices and necessary wiring shall be provided for fully automatic and manual operation of all generator sets. All devices shall be mounted in each control board. The control system shall comprise of the following features:
A. Manual - Automatic start/stop of each generator sets.
B. Manual - Automatic synchronization of the generator sets.
C. Manual - Automatic and manual transfer and retransfer of load.
D. Start delay to prevent unnecessary starting of the set in the event of false main failure or momentary transient break of main supply.
E. Multi start attempt, if the engine fail to start on the first attempt.
F. Main return delay to prevent unnecessary load retransfer in the event of flase main restoration.
G. Run on time delay for relieving stresses in the engine by allowing it to cool down before stopping.
H. Other feature according to manufacturer's standard practice.
I. Remote Engine Annunciator Panel include engine run and low fuel indicator lights and remote start-stop switch.
2.8 OPERATION UPON MAIN FAILURE
See Section 16350 paralleling switch gear.
2.9 ASSEMBLY
A. Taét/môû töï ñoäng - ñieàu khieån baèng tay cho moãi maùy phaùt ñieän.
D. Khôûi ñoäng role ñeå ngaên caùc khôûi ñoäng khoâng caàn thieát cho thieát bò ngay khi phaù hoûng chính hay moái gaõy taïm thôøi cuûa nguoàn cung caáp chính.
E. Ña khôûi ñoäng, neáu ñoäng cô khoâng khôûi ñoäng.
F. Söï trôû laïi treã ñeå ngaên truyeàn laïi taûi khoâng caàn thieát ngay khi phuïc hoài aùnh saùng chính.
G. Chaïy treã thôøi gian cho xaû öùng xuaát trong ñoäng cô baèng caùch cho pheùp noù nguoäi laïi tröôùc khi döøng.
H. Caùc ñieåm ñaëc tröng khaùc theo öùng duïng tieâu chuaån cuûa nhaø saûn xuaát.
I. Tuû ñieän tín hieäu ñoäng cô ñieàu khieån töø xa goàm raõnh ñoäng cô vaø duïng cuï ño nhieân lieäu thaáp vaø ñieàu khieån coâng taéc taét/môû töø xa.
The generator set, control board and transfer switch cubicle shall be assembled and tested at the factory the manufacturer and shall have a certain product range and own type, model number and code.
2.10 SOUND LEVEL CONTROL
Provide sound proof material to control sound level from generator room by keepsound level less than 85 dB, at 1 m. from outside wall.
PART 3 - EXECUTION
3.1 EXAMINATION
A. Verify that surfaces are ready to receive work and field dimensions are as shown on the Drawings.
B. Verify that required utilities are available in proper location and ready for use.
C. Beginning of installation means installer accepts existing conditions.
3.2 INSTALLATION
A. Provide concrete base for all sets. Location and weight of each sets are shown on the Drawings.
B. Install the sets in accordance with manufacturer's instructions.
3.3 FIELD QUALITY CONTROL
A. Field inspection and testing will be performed after completion of the work according to NEMA MG1.
B. Provide full load test utilizing without interruption portable test bank, if required, for four hours minimum. Simulate power failure including operation of transfer switch,
