Section 16613 - Emergency Elelctrical Power Supply

Transcript

SECTION 16613 - EMERGENCY ELELCTRICAL POWER SUPPLY CONSTRUCTION STANDARD PART 1: GENERAL 1.01 1.02 Summary A. Furnish and install all of the necessary equipment, hardware and labor for a complete on-site generated electric power supply for the Emergency Electrical System of (___facility__). The complete system shall be installed by ( the Owner, Owner representative, the Vendor, etc. ). All equipment and labor shall meet the below listed specifications. B. The on-site generated electric power supply shall include a natural gas enginegenerator set rated for continuous standby service at 480Y/277 Volts, grounded-wye, 60 Hertz. The set shall include an engine that is directly connected to a synchronous, four-pole, revolving field generator via a flexible disc and shall include all of the necessary equipment to automatically start and stop the unit. The kW rating shall be as indicated elsewhere in this specification. C. The generator set shall be connected to the Emergency Power System through an Owner furnished automatic transfer switch and shall be considered a separately derived power source for grounding purposes. D. Any mention of the Utility power or source shall be a referral to the Owner's self-generated electrical supply. E. All materials and labor are to be furnished by the Division 16 contractor. At the Division 16 contractor’s cost, certain designated items, such as the fuel and exhaust systems, are to be installed by the Division 15 contractor. F. The electrical power supply furnished per this specification shall meet or exceed all of the capabilities indicated in these specifications. The Vendor will take all factors into consideration, including available engine ventilation, available combustion air, exhaust pipe size and configuration, adequate mufflers, etc. The Vendor is responsible for the overall performance of the engine-generator set and shall verify that the system will operate as specified. Reference Documents A. The Special Provision for Electrical Work are hereby made a part of this section of the work. Refer to Section 16010. B. See Section 16190 for Supporting Devices. C. See Section 16496 for Enclosed Transfer Switches. D. Work shall be in compliance with the applicable portions of NFPA-30, 37, 99, and 110. E. The equipment and installation shall meet the requirements of all applicable sections of NEMA Standards Publication MG 1, latest revision. F. Definitions of rating criteria shall be in accordance with ANSI Standard IEEE 100. Design & Construction Standards, Revised September 1999 16613-1 SECTION 16613 - EMERGENCY ELELCTRICAL POWER SUPPLY CONSTRUCTION STANDARD 1.03 1.04 Submittals A. Submit manufacturer's data on each item of material. B. Submit shop drawings on the proposed assembly for each component. C. Supply manufacturer's certified test report of this unit at full load and power factor. Certify that a prototype of this unit has been tested including the following: 1. Maximum Power Level; 2. Maximum Motor Starting Capabilities; 3. Endurance Test; 4. Structural Soundness; 5. Torsigraph Analysis; 6. Transient Response and Steady State Performance; 7. Single Step Load Pickup; 8. Harmonic Analysis and Wave Form Deviations; and 9. a Three-Phase Short Circuit Analysis. D. Submit starter requirements, battery size and rating, battery cable size and how submitted battery, charger. Special Note: Furnish battery at time of Start-up. E. Submit the exhaust flow and back pressure limitations and the calculated back pressure of the proposed exhaust system. F. Submit sample test form for field test of unit. Quality Assurance A. System and accessories shall be built, tested, and shipped by a single equipment supplier so that there is one source of supply and responsibility. Certify the performance of the electric plant to full power rating, stability, and voltage and frequency regulation. B. Materials, equipment, and parts comprising the units specified herein, shall be new and unused, of current manufacture and of highest grade, free from all defects or imperfections affecting performance. C. The design and construction shall be such that there are no rotating or hazardous components exposed and that normal adjustments and maintenance can be effected without the use of special tools. The completed facility shall be prime coated and finished in machinery enamel. D. The engine, generator, and major items of equipment shall be products of U.S. Manufacturers regularly engaged in the production of such equipment, and Design & Construction Standards, Revised September 1999 16613-2 SECTION 16613 - EMERGENCY ELELCTRICAL POWER SUPPLY CONSTRUCTION STANDARD shall be assembled, tested and shipped to the job site by the engine manufacturer or his authorized distributor maintaining a parts and service facility in the area. 1.05 Sequence of Operation Requirements A. When normal utility power is available, the Emergency Power System shall receive power from the normal power distribution system and transmit normal utility power over the Emergency Power System. B. Upon failure of the normal utility source, the engine shall start automatically and the automatic transfer switch shall switch the supply local engine generator set power to the Emergency Power System. C. Upon restoration of normal utility power, the controls shall automatically reverse the procedures with time-delay-on-retransfer and time-delay-onengine-shutdown. PART 2: PRODUCTS 2.01 Acceptable Manufacturers A. 2.02 Subject to compliance with the requirements of this specification, acceptable manufacturers shall be: 1. Cummins Onan Model (########). 2. Owner approved equal. Engine-Generator Set A. The natural gas fired engine-generator set shall be rated not less than the specified KW/KVA at 0.8 power factor on a continuous standby basis. The AC synchronous generator shall be rated 60 Hertz, 4 pole, revolving field, 1800 RPM for use with a 480Y/277 VAC, 3 phase, 4 wire electrical system. The alternator shall be oversized and rated for at least 125% of the specified KW/KVA at 800 rise for non-linear load considerations. B. The engine-generator set manufacturer shall verify the unit's KW/KVA rating after derating for the range of temperatures expected and the ambient temperature and altitude of installation as specified herein. C. The engine-generator set shall be capable of picking up a minimum of 100% nameplate kW and power factor, less applicable derating factors, in one step with the unit at operating temperature. D. The engine-generator set shall have a motor starting or surge KVA capability of three times the rated KVA based upon a recovered sustained RMS voltage drop of no more than 10% of no load voltage with the specified load KVA at or near zero power factor. Maximum instantaneous voltage dip shall not exceed 30% at this load and power factor level. E. The engine-generator set shall be mounted on a suitable structural steel base capable of maintaining proper alignment between components during Design & Construction Standards, Revised September 1999 16613-3 SECTION 16613 - EMERGENCY ELELCTRICAL POWER SUPPLY CONSTRUCTION STANDARD shipment, installation, and operation. Unit shall include proper vibration isolators to minimize noise and building vibration. 2.03 F. A torsional analysis shall be calculated by the manufacturer of the enginegenerator set to verify freedom from torsional stresses within plus or minus 10% of rated speed, with results submitted to the Owner for approval as specified herein. G. The Total Harmonic Distortion (THDv) for the output voltage, from no load to full linear load, shall not exceed 5% and no single harmonic shall exceed 3%. H. The Telephone Influence Factor (TIF) shall be less than 50 per NEMA MG 1. Engine and Equipment A. The engine shall be stationary, liquid-cooled, natural gas fueled, naturally aspirated or turbocharged, four stroke cycle, single crankshaft, in-line or Vtype. Engine shall be direct connected to an alternating current generator via a flexible disk coupling. Engine shall be certified by the engine manufacturer as capable of developing adequate brake horsepower operating on 900 BTU gas, at a potential delivery rate of (####) Cubic Feet per Hour (CFH), to drive a generator delivering the rated kW plus 5% on a continuous standby basis for ambient conditions of 110°F and 1,200 feet above sea level elevation for the duration of utility source interruptions. Rating must be substantiated with manufacturer's published curves after deducting all engine and motor driven accessories. B. The cylinder block shall be cast iron with replaceable wet liners, and have four valves per cylinder with ignition by center fire spark. Valves and valve seat inserts shall be high alloy faced, 15 or 20 degree angle, with chrome plated stems, designed specifically for natural gas engine operation. Positive action valve rotators shall be provided. All components of the valve system shall be replaceable. The crankshaft and the connecting rods shall be forged steel. C. The engine shall be water cooled with a skid-mounted high ambient temperature closed loop radiator system, belt-driven pusher fan, coolant pump, thermostat temperature control, engine mounted inter-cooler system, and coolant corrosion resister filters with service valves. Radiator, fan, pump, and circulation system shall be sized to cool the engine at rated load in 110°F ambient temperature at 1,200 feet above sea level elevation. Engine shall be equipped with a 50% ethylene glycol solution in the engine water jacket and radiator. Engine shall be equipped with a liquid level control to indicate alarm on low coolant level. D. The exhaust manifold shall be jacket coolant cooled. An oil pressurized nozzle shall provide additional piston cooling. For turbo-charged engines, air-to-air aftercooling (intercooling with internally mounted heat exchanger in the intake manifold) shall be engine mounted at the factory. E. The engine shall be carbureted with a low pressure fuel utilization system. The air intake system shall be balanced for even fuel distribution. A reserve flow design shall provide for adequate fueling during load pick-up. Design & Construction Standards, Revised September 1999 16613-4 SECTION 16613 - EMERGENCY ELELCTRICAL POWER SUPPLY CONSTRUCTION STANDARD F. The engine shall have a breakerless, low-tension ignition system with fully sealed module-type electronics. Precise low cranking speed firing shall come from a magneto-type power source. The ignition system must fire each cylinder independently, with timing built into an integral unit. High voltage spark plug wires shall be of the RFI suppressant type. Spark plug probes shall be Teflon insulated and impervious to oil, antifreeze, and water. G. Frequency regulation shall be by an electronic isochronous type governor that will provide constant speed and speed adjustment. Frequency regulation shall be +/- 0.25% of rated frequency from no load to full load. H. Starting shall be electric, operating on a 24 volt battery supply. Batteries shall be furnished by Vendor. The starter shall disengage automatically when the engine starts. I. Lubrication shall include positive displacement, mechanical lubrication oil pumps, lubricating oil coolers, full flow lubricating oil filters and dipstick oil level indicators. J. Include fuel filters with replaceable elements and replaceable dry element air cleaner. K. Engine shall have a starting jacket water heating system (2 each – sized as recommended by the manufacturer, not to exceed 6,500 watts each) operating at 208 volts, single phase, 60 hertz power and with thermostat to control the temperature of the heater to 1200 F ±100 F. Upon engine starting, an oil pressure switch shall shut off the heater. Heating system shall include servicing valves that allow the elements to be removed without draining the unit. L. Provide the initial charge of lubricating oil. The lubricating oil drain valve will extend beyond the skid. M. Provide sensing elements on engine to initiate alarms and engine shutdowns. Design & Construction Standards, Revised September 1999 16613-5 SECTION 16613 - EMERGENCY ELELCTRICAL POWER SUPPLY CONSTRUCTION STANDARD 2.04 2.05 Alternator and Control A. The AC alternator shall be a synchronous generator, four pole, revolving field, drip proof construction, single pre-lubricated sealed bearing, air cooled by a direct drive centrifugal blower fan, and directly connected to the engine with a flexible disc. B. The armature shall have skewed laminations of insulated electrical grade steel, two-thirds pitch winding. The rotor shall have an amortisseur (damper) winding, with layer wound mechanically wedged construction. The rotor shall be dynamically balanced. Surge suppressers shall be connected in parallel with the field winding. Use of field discharge resistance shall not be acceptable. Systems using three-wire solid-state devices shall mount the unit in a stationary location. C. The insulation system components shall meet NEMA MG1 standard temperature limits for Class H insulation. Actual temperature rise measured by the resistance method at full load of KW/KVA shall not exceed 80° C with a 40° C ambient. D. The alternator characteristic shall be matched to the torque characteristics of the engine in such a manner that with full load connected to the generator terminals, the generator can utilize all the available engine power without exceeding it at all speeds up to and through synchronous speed. E. The alternator bearing shall be electrically insulated from the generator end bell to block potentially damaging shaft currents caused by imprecise manufacturing tolerances or variations in electrical steel. F. The alternator shall be equipped with heaters operating on 12O or 208 VAC to control moisture condensation. Power for heaters shall be automatically turned off when unit is running. G. The AC output leads of the alternator shall be brought out to a main molded case thermal-magnetic circuit breaker of suitable voltage and continuous and interrupting current rating. The circuit breaker shall be UL listed and accessible through removable plates on either side of a sheet metal output box. H. A control unit shall be installed and shall include an alternator field excitation circuit breaker of suitable continuous duty and interrupting ratings; AC ammeter and 3 phase selector switch; AC voltmeter and selector switch for all phase-to-phase and phase-to-neutral voltages; frequency meter; voltage adjust rheostat with +/- 5% adjustment; automatic voltage regulator; and necessary wiring and interconnections in accordance with the wiring methods set forth elsewhere in these Specifications. Voltage Regulation A. The voltage regulator shall be solid state permanent magnet design providing no load to full load regulation within plus or minus one half of one percent (±0.5%) of rated voltage during steady state condition. Instantaneous voltage dip shall not be greater than 30% of rated voltage upon application of full load Design & Construction Standards, Revised September 1999 16613-6 SECTION 16613 - EMERGENCY ELELCTRICAL POWER SUPPLY CONSTRUCTION STANDARD at rated power factor to the generator. Recovery time shall not exceed one second for restoration of stable voltage within plus or minus 3% of rated load. 2.06 B. The automatic voltage regulator shall be temperature compensated and include overvoltage and overexcitation protection functions. This unit shall be equipped with three phase RMS sensing. The regulator shall control the increase in the generator voltage to provide a linear rise and limit overshoot. Both the overvoltage and overexcitation protection shutdowns described below shall be latched, requiring the generator to be stopped for reset. C. The overvoltage protection function shall sense the generator output voltage and, in the event of a regulator failure or loss of reference, shall shut down the regulator output on a sustained overvoltage of 1 second duration. D. The overexcitation protection function shall sense the regulator output and shutdown the regulator output if an overload exceeds 10 seconds in duration. E. The regulator shall include an under-frequency roll-off torque-matching characteristic, which shall reduce the output voltage in proportion to the frequency below a threshold of 58-59 Hertz. The torque-matching characteristic shall include a differential rate frequency change compensation to use maximum available engine torque and provide optimal transient load response. Regulators which use a fixed volts per Hertz characteristic are not acceptable. Automatic Engine-Generator Set Controls A. A control unit for the engine generator set shall be housed in a NEMA 1 enclosure mounted on the unit with vibration isolators. The control unit shall include surge suppression for protection of solid state components. A front control panel illumination lamp with an ON/OFF switch shall be provided. All switches, sensors, etc. needed to perform any of the below listed functions shall be included. Shutdowns, status, alarms, and controls shall be as indicated below and per NFPA-110 Level 1 requirements. B. The control unit shall shutdown and lockout the engine upon any of the following events and/or conditions: C. 1. Overcrank. (See “cycle cranking function” description below.) 2. Overspeed. 3. Low lubricating oil pressure. A time delay relay shall be included to prevent alarms and premature shutdown of the engine before reaching operating speed. 4. High engine temperature. 5. Operation of remote manual stop. The control unit shall include a cycle cranking function. The cranking cycle shall be non-adjustable and consist of an automatic crank period of approximately 15 seconds duration followed by a rest period of approximately 15 seconds duration. Cranking shall cease upon engine starting and running. Design & Construction Standards, Revised September 1999 16613-7 SECTION 16613 - EMERGENCY ELELCTRICAL POWER SUPPLY CONSTRUCTION STANDARD An over-crank light, alarm bell and auxiliary contacts shall indicate when the engine fails to start due to malfunction. Failure to start after three cranking cycles (75 seconds) shall shutdown and lockout the engine. Shutdown control shall include an indicating light on the control panel. Control wiring shall be so designed so that this malfunction will lockout the automatic controls until the operator resets them after correction of the trouble. D. E. F. Control panel mounted indicating (status) meters and devices shall include: 1. Engine oil pressure gauge. 2. Engine oil temperature gauge. 3 Coolant temperature gauge. 4. Solid State Digital DC voltmeter. 5. Running time meter (hours). 6. Voltage adjusting rheostat. 7. Analog AC voltmeter, 2% accuracy. 8. Analog AC ammeter, 2% accuracy. 9. Analog frequency meter. 45-60 Hz, 2% accuracy. 10. Seven position phase selector switch with off position to allow meter display of current and voltage of each generator phase. Control panel mounted devices and status indicating lamps shall be provided for the following: 1. Normal power on. 2. Low battery voltage. Control panel mounted devices, status indicating lamps, and audible alarm with self-restoring silence shall be provided for the following: 1. Emergency generator operating. 2. Pre-high coolant temperature. 3. High engine jacket water temperature. 4. Low jacket water temperature. 5. Pre-low lubricating oil pressure. 6. Low lubricating oil pressure. 7. Low main fuel supply. Design & Construction Standards, Revised September 1999 16613-8 SECTION 16613 - EMERGENCY ELELCTRICAL POWER SUPPLY CONSTRUCTION STANDARD 2.07 8. Control switch not in automatic position. 9. Battery charger malfunction. 10. Low coolant level. G. Controls for automatically starting and stopping the engine shall be incorporated in the control unit. The control unit shall have automatic remote start capability. A panel mounted switch placed in the STOP position shall stop the engine, shall start and run the engine when placed in the RUN position, and allow the engine to start and run or stop from a remote contact's opening and closing when in the REMOTE position. A RESET switch shall be provided for resetting after emergency shutdown. H. Starting and stopping the engine is to be sensed through an auxiliary contact located in the automatic load transfer switch, or through the manual start-stop. I. If indicated on the drawings, provide a remote manual stop button with a keyswitch lockout for engine emergency off. J. Provide a lamp test switch for visual verification of operation. K. All status indicating lights will be Light Emitting Diodes (LED’s). Remote Alarm Annunciator A. Provide a remote alarm annunciator with visual indication and dry type Form C contacts to indicate and provide remote indication of the following functions: 1. Normal power-on.* 2. Emergency generator operating.* 3. Generator supplying load.* 4. Engine jacket water low temperature. 5. Pre-high water temperature. 6. Engine jacket water high temperature. 7. Engine temperature - excessively high - engine shutdown. 8. Pre-low lubricating oil pressure. 9. Lubricating oil pressure excessively low - engine shutdown. 10. Low fuel pressure. 11. Battery voltage normal.* 12 Battery voltage low.* Design & Construction Standards, Revised September 1999 16613-9 SECTION 16613 - EMERGENCY ELELCTRICAL POWER SUPPLY CONSTRUCTION STANDARD 13. Battery voltage high.* 14. Overcrank - engine shutdown. 15. Overspeed - engine shutdown. 16 Engine start control switch not in "Auto" position. 17. Low Coolant.* a. 2.08 2.09 2.10 Functions indicated (*) shall have lamp indication and Form C contact operation only. All other functions will also include an audible buzzer with a Reset Silencing Switch. B. A test switch verifying lamp status shall be provided. C. All status indicating lights will be Light Emitting Diodes (Leeds). Automatic Load Transfer A. Refer to Section 16496 for Enclosed Transfer Switches. B. The Owner’s emergency electrical system shall include an automatic transfer switch. This emergency power source shall be connected to the switch. Unit Mounting A. The engine-generator unit shall be mounted on a welded steel base suitable for skidding in place and bolting down. B. Vibration isolators of the type and quantity recommended by the manufacturer shall be provided. Fuel System A. 905 British Thermal Units per cubic foot (905 Btu/Cu Ft LHV) or 33.72 Kilojoules per liter (33.72 KJ/L) at ambient conditions of 30 inches of mercury and 600 F. (LHV = Low Heat Value) B. Provide typical accessories for the fuel supply system including regulators, strainer, flexible connecting hose, electric solenoid, etc., to provide a proper fuel supply to the engine. C. The piping and gas cock shall meet the requirements as set forth for gas piping in Division 15. D. The fuel regulator shall be selected and furnished by the engine supplier to provide proper fuel pressure and volume to the engine. The regulator shall be sized according to the on-site gas supply pressure of 12 oz. per square inch. E. Fuel strainer shall be equal to OPW 387 with 40 mesh brass screen in a holding cage. Design & Construction Standards, Revised September 1999 16613-10 SECTION 16613 - EMERGENCY ELELCTRICAL POWER SUPPLY CONSTRUCTION STANDARD F. 2.11 Fuel solenoid valve shall be 24 volt DC electric solenoid suitable to be open when engine runs and immediate shutdown on engine off or emergency. Engine Exhaust System A. B. For Outdoor Applications 1. Exhaust piping including all pipe elements and fittings shall be rigid stainless steel exhaust pipe of size recommended by the engine supplier. All gasketing at flanges shall be non-asbestos type. All piping element materials of composition shall be rated for engine exhaust gas temperatures to 1350 degrees Fahrenheit. 2. Exhaust silencer shall be an all stainless steel critical grade silencer. Unit shall be provided with a condensate drain at bottom of the silencer body. 3. Exhaust gas temperatures over 1, 000 degrees Fahrenheit: All pipe elements and the silencers shall be coated with a spray high temperature coating product rated for surface operating temperature in the range of 1;000 through 1,400 degrees Fahrenheit. Coating shall be heat resistant to 1,600 degrees Fahrenheit. Before coating is applied surface shall be properly prepared in accordance with coating manufacturer’s recommendations. 4. Stainless steel exhaust outlet rain cap shall be a fully opening barometric type cap. 5. The exhaust connection from the engine exhaust manifold to the exhaust silencer shall be a stainless steel bellows expansion joint with stainless steel liner for exhaust gas temperatures over 1000 degrees F., not less than 18 inches long, furnished by the engine manufacturer. A stainless steel flexible exhaust connector not less than 18 inches long, furnished by the engine manufacturer is acceptable for exhaust gas temperatures up to 1000 degrees F. 6. Hangars and supports shall be all stainless steel. Hangars and supports shall allow for pipe thermal expansion. Attachments to engine housing sheetmetal steel shall be with stainless steel bolts and washers. All rigid piping and silencers shall be installed so that the engine’s exhaust outlet connection is not stressed. 7. At ten foot intervals in pipe runs that are attached to rigid structures provide stainless steel bellows expansion joints with stainless steel liners to accommodate pipe thermal linear expansion so as to prevent excessive pipe movement. For Indoor Applications 1. Exhaust piping shall be rigid exhaust pipe of size recommended by the engine supplier. All gasketing at flanges shall be non-asbestos type. Design & Construction Standards, Revised September 1999 16613-11 SECTION 16613 - EMERGENCY ELELCTRICAL POWER SUPPLY CONSTRUCTION STANDARD 2.12 2.13 2. Exhaust silencer shall be a Nelson Critical 300 critical grade silencer. Unit shall be provided with a condensate drain at bottom of the silencer body. 3. For exhaust gas temperatures over 1,000 degrees Fahrenheit: All pipe elements and the silencers shall be coated with a spray high temperature coating product rated for surface operating temperature in the range of 1;000 through 1,400 degrees Fahrenheit. Coating shall be heat resistant to 1,600 degrees Fahrenheit. Before coating is applied surface shall be properly prepared in accordance with coating manufacturer’s recommendations. 4. Exhaust outlet rain cap shall be a fully opening barometric type cap. 5. The exhaust connection from the engine exhaust manifold to the exhaust silencer shall be flexible stainless steel, not less than 18 inches long, furnished by the engine manufacturer. 6. Hangars and supports shall be provided. Hangars and supports shall allow for pipe thermal expansion. All rigid piping and silencers shall be installed so that the engine’s exhaust outlet connection is not stressed. 7. At ten foot intervals in pipe runs that are attached to rigid structures provide bellows expansion joints to accommodate pipe thermal linear expansion so as to prevent excessive pipe movement. C. Exhaust outlet rain cap shall be a fully closing barometric type cap. D. The exhaust connection from the engine exhaust manifold to the exhaust silencer shall be flexible stainless steel, not less than 18 inches long, furnished by the engine manufacturer. Batteries A. Batteries shall be 12 volt heavy duty lead acid type. B. Battery rack shall be as required for installation beside the engine and for battery terminals to be protected from accidental dropping of tools or similar devices. C. Lugs and devices shall be included for proper interconnection of the battery components and control and starter connection cables. D. Battery and cables shall be as sized and selected by the engine manufacturer. Battery Charger A. The charger shall be 100% solid state. DC output shall be voltage regulated and current limited so as not to require a cranking disconnect relay. B. The charger shall include: full wave output, silicon semiconductors, automatic boost (equalize) mode, surge suppression, individual potentiometer adjustments for boost and float voltage, Solid-state Digital DC output Design & Construction Standards, Revised September 1999 16613-12 SECTION 16613 - EMERGENCY ELELCTRICAL POWER SUPPLY CONSTRUCTION STANDARD voltmeter and ammeter, AC and DC fuses, input and output terminals, and DC output completely isolated from AC input. 2.14 C. The assembly shall have a 12O VAC input and shall be capable of restoring a pair of fully discharged batteries to a fully charged condition within 12 hours. D. If designated by the Owner in Section 16496, the battery charger shall be located in the automatic transfer switch. Outdoor Housing A. If indicated in the drawings, furnish an outdoor weather-protective housing with critical grade exhaust muffler installed and located on the housing roof. Also see Section 2.11-A. for the Engine Exhaust System. The housing shall have hinged side-access doors and rear control door. All doors shall be lockable. Sound attenuation shall be 85db at 3 feet from the enclosure. All sheet metal shall be primed for corrosion protection and finish painted with the manufacturer’s standard color. PART 3: EXECUTION 3.01 Installation A. B. Vendor Installation: 1. The engine-generator set and all accessories shall be received at the job, properly stored, and installed in strict accordance with the equipment manufacturer’s written instructions. 2. Place the engine-generator unit on and secure to a reinforced concrete pad which is of a suitable design to support the weight of equipment. Owner Installation: 1. 3.02 The vendor will provide written instructions for the recommended installation procedures. The written instructions will include storage, fuel system, exhaust, and auxiliary system requirements. Fuel System A. Furnish and install the fuel system and all components under Division 16. This includes valves, strainers, piping, controls, alarms and all auxiliary devices to complete the fuel system. B. Arrange for the Division 15 contractor to install each of the items normally installed by Division 15 workmen in accord with the specifications for Division 15 work and as indicated herein and on the drawings. C. Properly set the inlet fuel pressure to provide the maximum fuel pressure recommended by the engine manufacturer. D. Install the electric solenoid to block the natural gas supply to the engine at anytime the engine is not to run and to permit delivery of fuel at all times the engine is required to run. Design & Construction Standards, Revised September 1999 16613-13 SECTION 16613 - EMERGENCY ELELCTRICAL POWER SUPPLY CONSTRUCTION STANDARD 3.03 3.04 Engine Exhaust System (Not mounted on housing) A. The engine exhaust system and all components shall be furnished under Division 16. Arrange for Division 15 contractor to install the exhaust system in accord with the specification for Division 15 and in accord with the manufacturer’s recommendations. This shall include flexible engine connectors, bellows expansion joints, exhaust pipe, silencer, exhaust insulation, hangers, and rain caps. Locate all components of the exhaust system to avoid heat damage to the building and adjacent materials and equipment. B. Hang the exhaust silencer with spring supports. Provide insulated separation to avoid the engine exhaust heat damaging the spring supports or the silencer support structure. Run a drain line from the silencer condensate drain to the nearest floor drain. Provide a labeled manual valve in the drain line. C. Install the flexible connector or bellows expansion joint on the engine and connect the engine exhaust to the silencer and to the building exterior with rigid steel exhaust pipe. Provide spring supports for the exhaust pipe in such a manner to securely support the pipe and to avoid exhaust heat damage to the structural supports. Plan the exhaust system to avoid excessive back pressure on the engine. Provide long sweep bends on any change I direction of the exhaust gas flow. Install ventilated sleeves at each penetration of a building component. Install a rain cap on the exhaust outlet. All horizontal pipe runs should be sloped downwards away from the engine to insure that any condensation in the pipes does not run back into the exhaust manifold or turbocharger of the engine. D. Insulate the silence and exhaust piping to retard heat dissipation within the building and to protect personnel from injury. Install the insulation and jacket per manufacturer’s recommendation. Install first layer and second layer of the insulation in two stages with joints staggered. Install covers and bands at each joint per the manufacturer’s recommendations. The insulation will be factory applied and will feature an outer jacket of 0.025” aluminized steel. The insulation will be such that it reduces the outer jacket temperature to approximately 84% of the exhaust gas temperature. The completely assembled exhaust system will be capable of holding up to 60 inches of water (4.4 in. Hg) positive pressure. E. The manufacturer will size and design the exhaust system for the proper back pressure and will issue his standard two-year warranty on the finished system. Auxiliary Equipment Connections A. Install and make operative, each of the auxiliary components of the Emergency Power System. B. Connect the engine jacket water heater and controls from a separate 120 or 208 VAC circuit from a normal power circuit. C. Connect the generator heater and controls from a separate 120 or 208 VAC circuit from a normal power circuit. Design & Construction Standards, Revised September 1999 16613-14 SECTION 16613 - EMERGENCY ELELCTRICAL POWER SUPPLY CONSTRUCTION STANDARD 3.05 3.06 D. Connect the remote Alarm Annunciator (if applicable) to operate from the Engine starting battery at 24 VDC but use wire that is suitable for 600 volt service. E. If required, connect and install all necessary equipment and controls to allow the engine-generator room outside air damper to open when the engine starts. Safety and Alarms A. Properly mount and connect all safety devices in such a manner as to give proper operation and indication of their function. B. Connect all safety devices as previously specified to either the auxiliary annunciator or to terminations which shall be connected by the Owner to a Remote Annunciator. Auxiliary Annunciator A. 3.07 Division 16 Contractor shall mount the Alarm Annunciator and properly connect for the requirements of the unit. Tests A. Test the complete unit at the manufacturer’s facility. Prove the integrity of starting, stopping, all controls, alarms, and emergency shutdown features. Simulate all possible conditions including failure to start. The unit shall perform under test without abnormal vibration. B. After unit has been installed by the Owner, provide a trained representative of the manufacturer to inspect the installation and perform the initial start-up and explain operating instructions and maintenance procedures to the Owner’s operating personnel. Test to show equipment will start automatically, carry full load, operate as specified with one step loading, shut down and reset and otherwise function as required in these Specifications. Correct any manufacturer defects as they are found during inspection and test. C. Run under load at a time designated by the Owner. Run under load to provide run-in and test of operation. The load test and heat run shall be performed by the manufacturer’s service representative. The test time shall be: 30 minutes at 1/2 load; 30 minutes at 3/4 load; 30 minutes at full load; and 30 minutes at 105% load. Work shall include providing and hooking up resistive load banks to make these tests. Fuel for the tests will be furnished by the Owner. Regardless of time, no test will be terminated as long as any temperatures are still rising. D. Record the test data. Record the date and time of startup and at 10 minute intervals through the test, read and record the following: 1. Time. 2. Voltage. 3. Amperage. Design & Construction Standards, Revised September 1999 16613-15 SECTION 16613 - EMERGENCY ELELCTRICAL POWER SUPPLY CONSTRUCTION STANDARD E. 3.08 3.09 4. Coolant Temperature. 5. Oil Temperature. 6. Oil Pressure. 7. Exhaust Temperature. Submit a sample of the 8-1/2" x 11" test data form for approval before testing is scheduled. The test data form shall provide spaces for recording: 8. Date and time of start-up. 9. Identification of unit under test, including manufacturer, loading capacity, voltage characteristics and fuel type. 10. Weather (including temperature and humidity). 11. Multiple spaces for test data as listed above. 12. A statement as to degree of vibration. (Excessive vibration shall be cause for aborting test). 13. Signature of manufacturer's service person conducting test. 14. Signature of Owner's Representative. F. Furnish Owner with a copy of the test data immediately after the completion of the test and submit other copies for acceptance. G. The operation of the unit during the warranty period will also be considered a part of the TESTS. If, after acceptance for beneficial use by the Owner, and during the warranty period, the unit has to be taken out of service for repair, then the warranty shall provide for and include connecting a suitable temporary standby unit to the emergency power during the time the unit is not operable. Operation and Service Manuals A. Provide two copies of manuals including operating and maintenance manuals, fuel system instructions and drawings, parts books, dimension drawings, and "as-built" wiring diagrams as a part of Records for Owner. B. Provide one complete set of shop and service manuals C. List the local repair facilities for each component of the system, e.g., engine, generator, switchgear. Special Signs A. Provide emergency system nameplates as detailed in Section 16010 of these Specifications. Design & Construction Standards, Revised September 1999 16613-16 SECTION 16613 - EMERGENCY ELELCTRICAL POWER SUPPLY CONSTRUCTION STANDARD B. 3.10 3.11 Emergency System designations for the nameplates shall be given to all pertinent equipment including the automatic transfer switch, the normal source breaker, the emergency panelboard, etc.. Electrical Systems Connections A. Connect the load cables from the generator’s circuit breaker terminals to the emergency terminals of the automatic transfer switch in accordance with the wiring requirements delineated in other portions sections of these Specifications. B. Properly ground the generator neutral, housing, frame, and piping as set forth under grounding. Warranty A. All devices making up the on-site generated emergency power supply of the Emergency Power System (except for maintenance type items) shall be guaranteed against defects in workmanship and material for a period of at least one year. The warranty period shall begin upon Owner acceptance of the equipment. B. All repairs shall be handled in an expeditious manner. The Owner shall be provided with a standby alternate power supply should the expected repair time either exceed, or be expected to exceed, 7 consecutive calendar days (168 hours). END OF STANDARD 16613 Design & Construction Standards, Revised September 1999 16613-17