ࡱ> '` ~bjbj{P{P 1::j  CCC8FC$jC 4T,DDDDDD@3EOESSSSSSS$`UhWS &GDD&G&GS DDSMMM&G D DSM&GSMM:kR OSDC TPCGS6S4T04TES XHXOSX OS0_EvETM)FDmF_E_E_ESStMX_E_E_E4T&G&G&G&G 6C C  DESIGN A/E NOTE - GUIDE SPECIFICATION CONVENTIONS Color-highlighted text Yellow: Editors Notes. Comments inserted into the text are addressed to the A/E, not the Contractor. Editors Notes are formatted as hidden text. Editors Notes are not identified with an update. Do not print Editors Notes in issue for distribution to Bidders/Contractors. Tip: To not print Editors Notes (hidden text) in document choose Tools on Menu bar, click Options, Print tab, under Include with document, uncheck Hidden text (check to print text), click OK. Save. Tip: To view Editors Notes (hidden text) in a document choose Tools on Menu bar, click Options, View tab, under Formatting marks, check Hidden text (uncheck to hide text), click OK. Save. Note: Yellow highlighting may be used to identify hyperlinked text. No editing is required unless paragraph numbering is changed. Red: Text updated in 1st quarter. April June. - Strikethrough text and highlighting (not text) in previously issued quarters are deleted. Only 1st quarter highlighted updated text is indicated. Turquoise: Text updated in 2nd quarter. July September. - 1st quarter updated text remains highlighted. Pink: Text updated in 3rd quarter. October December. - 1st and 2nd quarter updated text remain highlighted. Bright Green: Text updated in 4th quarter. January March. - 1st, 2nd and 3rd quarter updated text remains highlighted. Text Editing Select options [in brackets] and edit before issuing specifications for distribution to Bidders/Contractors. Delete Strikethrough text. Tip: To delete strikethrough text, choose Edit on Menu bar, click Find, Find tab, More (Search Options opens), select All, click Format, Font, check Strikethrough, OK. Click Replace tab, Replace All, OK, Close. Save. Delete all highlighting of text from issue to be distributed to Bidders/Contractors. Tip: To delete highlighting, locate cursor at beginning of Section and block all text in Section, press Shift + Control + End, click No Highlight icon on Formatting toolbar. Save. IMPORTANT: Retain month and year in footer indicating updated Guide Specification Section issue used. Note: This page will not print when Hidden text is unchecked as indicated in Editors Notes Tip. NOTE IF THE GUIDE SPECIFICATION CONVENTIONS PAGE DOES NOT APPEAR CLICK ON SHOW/HIDE ICON ON MENU BAR OR CHOOSE TOOLS ON MENU BAR, CLICK OPTIONS, VIEW TAB, UNDER FORMATTING MARKS, CHECK HIDDEN TEXT (delete this note before printing) Rev 19JUN09 j:\Projects\Active\com-deca_design_criteria_revisions-04071\Guide Specifications\TJG Innformation SECTION 16231 PACKAGED ENGINE GENERATORS Verify that Section titles referenced in this Section are correct for this Project's Specifications; Section titles may have changed. GENERAL RELATED DOCUMENTS Drawings and general provisions of the Contract, including General and Supplementary Conditions and Division1 Specification Sections, apply to this Section. SUMMARY This Section includes packaged diesel-engine generator sets with the following features and accessories: Adjust list below to suit Project. Delete second subparagraph for gas-fueled engines. Battery charger. Day tank. Engine-generator set. Muffler. Exhaust piping external to set. Outdoor enclosure. Remote annunciator. Remote stop switch. Starting battery. Related Sections include the following: List below only products, construction, and equipment that the reader might expect to find in this Section but are specified elsewhere. Division16 Section "Transfer Switches" for transfer switches including sensors and relays to initiate automatic-starting and -stopping signals for engine-generator sets. DEFINITIONS Retain abbreviation and terms that remain after this Section has been edited. Operational Bandwidth: The total variation from the lowest to highest value of a parameter over the range of conditions indicated, expressed as a percentage of the nominal value of the parameter. Steady-State Voltage Modulation: The uniform cyclical variation of voltage within the operational bandwidth, expressed in Hertz or cycles per second. SUBMITTALS Product Data: Include the following: Data on features, components, accessories ratings, and performance. Thermal damage curve for generator. Time-current characteristic curves for generator protective device. Shop Drawings: Detail equipment assemblies and indicate dimensions, weights, loads, required clearances, method of field assembly, components, and location and size of each field connection. Dimensioned outline plan and elevation drawings of engine-generator set and other components specified. Design Calculations: Signed and sealed by a qualified professional engineer. Calculate requirements for selecting vibration isolators and seismic restraints and for designing vibration isolation bases. Vibration Isolation Base Details: Signed and sealed by a qualified professional engineer. Detail fabrication, including anchorages and attachments to structure and to supported equipment. Include base weights. Wiring Diagrams: Power, signal, and control wiring. Retain paragraph below if procedures for welder certification are retained in "Quality Assurance" Article. Welding certificates. Retain paragraph and subparagraphs below if required by seismic criteria applicable to Project. Coordinate with Division16 Section "Seismic Controls for Electrical Work." Delete option in paragraph below if day tank is not used or if engine is gas fueled. Manufacturer Seismic Qualification Certification: Submit certification that day tank,engine-generator set, batteries, battery racks, accessories, and components will withstand seismic forces defined in Division16 Section "Seismic Controls for Electrical Work." Include the following: Basis for Certification: Indicate whether withstand certification is based on actual test of assembled components or on calculation. Retain one of first two subparagraphs below to define the term "withstand" as it applies to this Project. Definition varies with type of building and occupancy and is critical to valid certification. Second definition is used for essential facilities where equipment must operate immediately after an earthquake. Use the second definition for units serving remote commissaries in areas of high seismic probability. The term "withstand" means "the unit will remain in place without separation of any parts from the device when subjected to the seismic forces specified." The term "withstand" means "the unit will remain in place without separation of any parts from the device when subjected to the seismic forces specified and the unit will be fully operational after the seismic event." Dimensioned Outline Drawings of Equipment Unit: Identify center of gravity and locate and describe mounting and anchorage provisions. Detailed description of equipment anchorage devices on which the certification is based and their installation requirements. Coordinate paragraph below with qualification requirements in Division1 Section "Quality Requirements" and as supplemented in "Quality Assurance" Article. Qualification Data: For Installer and testing agency. See Editing Instruction No.3 in the Evaluations for discussion about prototype-unit testing. Certified summary of prototype-unit test report. Certified Test Reports: For components and accessories that are equivalent, but not identical, to those tested on prototype unit. Retain first paragraph below for generator sets specified to meet performance requirements and for generator sets serving sensitive loads. Certified Summary of Performance Tests: Demonstrate compliance with specified requirement to meet performance criteria for sensitive loads. Test Reports: Report of factory test on units to be shipped for this Project, showing evidence of compliance with specified requirements. Report of sound generation. Normally delete subparagraph below. See Evaluations. Report of exhaust emissions showing compliance with applicable regulations. Retain subparagraph below if Contractor is responsible for field quality-control testing. Field quality-control test reports. Certification of Torsional Vibration Compatibility: Comply with NFPA110. Operation and Maintenance Data: For packaged engine generators to include in emergency, operation, and maintenance manuals. In addition to items specified in Division1 Section Phase Turnover and Contract Closeout," include the following: List of tools and replacement items recommended to be stored at the Project for ready access. Include part and drawing numbers, current unit prices, and source of supply. Warranty: Special warranty specified in this Section. QUALITY ASSURANCE Installer Qualifications: Manufacturer's authorized representative who is trained and approved for installation of units required for this Project. Revise subparagraph below to suit Project location. Maintenance Proximity: Not more than [four] hours' normal travel time from Installer's place of business to Project site. Delete subparagraph below if Contractor is not required to assume responsibility for engineering. Engineering Responsibility: Preparation of data for vibration isolators and seismic restraints of engine skid mounts, including Shop Drawings, based on testing and engineering analysis of manufacturer's standard units in assemblies similar to those indicated for this Project. Manufacturer Qualifications: A qualified manufacturer. Maintain, within [200 miles] of Project site, a service center capable of providing training, parts, and emergency maintenance repairs. Source Limitations: Obtain packaged generator sets and auxiliary components through one source from a single manufacturer. Retain paragraph below to allow drawing details based on one manufacturer's product to establish requirements and still allow competition. Coordinate with Division1 requirements. Product Options: Drawings indicate size, profiles, and dimensional requirements of packaged generator sets and are based on the specific system indicated. Refer to Division1 Section "Product Requirements." Retain first paragraph below if welding is required. Delete "and cooling" option if generator does not have remote radiator. Retain "Welding certificates" Paragraph in "Submittals" Article if retaining paragraph. Welding: Qualify procedures and personnel according to ASME Boiler and Pressure Vessel Code: SectionIX for welding exhaust-system piping. Electrical Components, Devices, and Accessories: Listed and labeled as defined in NFPA70, Article100, by a testing agency acceptable to authorities having jurisdiction, and marked for intended use. Comply with NFPA37. Comply with NFPA70. Retain paragraph below if generator is automatically started. See Editing Instruction No.4 in the Evaluations. Comply with NFPA110 requirements for Level[1] [2] emergency power supply system. Retain paragraph below for state or local compliance. Edit to suit Project. Engine Exhaust Emissions: Comply with applicable state and local government requirements. Retain below for installations with critical noise-abatement requirements, particularly outdoor generator sets. Coordinate with noise-reduction features in the design, including those relating to cooling-air intake and discharge arrangement and muffler specification and its location and orientation as shown on Drawings. Noise Emission: Comply with [applicable state and local government requirements] for maximum noise level at [adjacent property boundaries] due to sound emitted by generator set including engine, engine exhaust, engine cooling-air intake and discharge, and other components of installation. COORDINATION Coordinate size and location of concrete bases. Cast anchor-bolt inserts into bases. Concrete, reinforcement, and formwork requirements are specified in Division3. WARRANTY When warranties are required, verify with Owner's counsel that special warranties stated in this Article are not less than remedies available to Owner under prevailing local laws. Coordinate with Division1 Section "Product Requirements." Special Warranty: Manufacturer's standard form in which manufacturer agrees to repair or replace components of packaged engine generators and associated auxiliary components that fail in materials or workmanship within specified warranty period. Verify available warranties for units and components. Warranty Period: Five years from date of Substantial Completion. MAINTENANCE SERVICE Retain this Article for critical installations and consider including a provision for submitting a continuing maintenance agreement proposal. Revise starting date if required. Obtain a copy of maintenance agreement before retaining or editing below. Maintenance contracts may not be allowed for publicly funded projects. Initial Maintenance Service: Beginning at Substantial Completion, provide [12] months' full maintenance by skilled employees of manufacturer's designated service organization. Include quarterly exercising to check for proper starting, load transfer, and running under load. Include routine preventive maintenance as recommended by manufacturer and adjusting as required for proper operation. Maintenance agreements shall include parts and supplies as used in manufacture and installation of original equipment. EXTRA MATERIALS Extra materials may not be allowed for publicly funded projects. Furnish extra materials described below that match products installed and that are packaged with protective covering for storage and identified with labels describing contents. Quantities below are examples only. Revise subparagraphs to suit Project. Fuses: One for every 10 of each type and rating, but not less than one of each. Indicator Lamps: Two for every six of each type used, but not less than two of each. Filters: One set each of lubricating oil, fuel, and combustion-air filters. PRODUCTS MANUFACTURERS See Editing Instruction No.1 in the Evaluations for cautions about naming manufacturers and products. Available Manufacturers: Subject to compliance with requirements, manufacturers offering products that may be incorporated into the Work include, but are not limited to, the following: Caterpillar; Engine Div. Generac Power Systems, Inc. Kohler Co; Generator Division. MagneTek, Inc. Onan Corp./Cummins Power Generation; Industrial Business Group. Spectrum Detroit Diesel. ENGINE-GENERATOR SET Packaged engine-generator set shall be a coordinated assembly of compatible components. Coordinate first paragraph below with prototype test requirements in Part1 "Submittals" Article and in Part2 "Source Quality Control" Article. Power Output Ratings: Nominal ratings as indicated, with capacity as required to operate as a unit as evidenced by records of prototype testing. Output Connections: Three phase, four wire. Safety Standard: Comply with ASMEB15.1. Nameplates: Each major system component shall be equipped with a nameplate to identify manufacturer's name and address, and model and serial number of component. Retain first paragraph below for projects in seismic areas. Fabricate engine-generator-set mounting frame and attachment of components to resist generator-set movement during a seismic event when generator-set mounting frame is anchored to building structure. Mounting Frame: Adequate strength and rigidity to maintain alignment of mounted components without depending on concrete foundation. Mounting frame shall be free from sharp edges and corners and shall have lifting attachments arranged for lifting with slings without damaging components. Delete below for units where rigging is not required. Rigging Diagram: Inscribed on metal plate permanently attached to mounting frame to indicate location and lifting capacity of each lifting attachment and generator-set center of gravity. GENERATOR-SET PERFORMANCE FOR SENSITIVE LOADS Retain this Article for loads involving sensitive electronic equipment, significant nonlinear load elements, or uninterruptible power supply systems. Coordinate with "Governor" and "Generator, Exciter, and Voltage Regulator" articles. See Evaluations. Meet ISO 8528-5 G3 requirements. Oversizing generator compared with the rated power output of the engine is permissible to meet specified performance. Nameplate Data for Oversized Generator: Show ratings required by the Contract Documents rather than ratings that would normally be applied to generator size installed. Steady-State Voltage Operational Bandwidth: +/- 2 percent of rated output voltage from no load to full load. Steady-State Voltage Modulation Frequency: Less than 1 Hz. Transient Voltage Performance: Not more than 10 percent variation for 50 percent step-load increase or decrease. Voltage shall recover and remain within the steady-state operating band within 0.5 second. Steady-State Frequency Operational Bandwidth: Plus or minus 0.25 percent of rated frequency from no load to full load. Steady-State Frequency Stability: When system is operating at any constant load within the rated load, there shall be no random speed variations outside the steady-state operational band and no hunting or surging of speed. Transient Frequency Performance: Less than 5.0% 2-Hz variation for a 50 percent step-load increase or decrease. Frequency shall recover and remain within the steady-state operating band within three seconds. Output Waveform: At no load, harmonic content measured line to neutral shall not exceed 2 percent total with no slot ripple. The telephone influence factor, determined according to NEMAMG1, shall not exceed 50 percent. Sustained Short-Circuit Current: For a 3-phase, bolted short circuit at system output terminals, the system shall supply a minimum of 300 percent of rated full-load current for not less than 10 seconds and then clear the fault automatically, without damage to winding insulation or other generator system components. Excitation System: Performance shall be unaffected by voltage distortion caused by nonlinear load. Below requires 10-second maximum start time under specific conditions and includes startup only, not load assumption. Retain, delete, or revise to suit Project. Start Time: Comply with NFPA110, Type10, system requirements. SERVICE CONDITIONS Environmental Conditions: Engine-generator system shall withstand the following environmental conditions without mechanical or electrical damage or degradation of performance capability: Retain first option in subparagraph below if generator-set start time must be within NFPA110 limits. This temperature range usually implies installation indoors in heated space. Coordinate with Drawings. Ambient Temperature: [5 to 40 degC] [Minus 15 to plus 40 degC]. Delete first subparagraph below for outdoor units. Relative Humidity: 0 to 95 percent. Altitude: Sea level to [1000 feet] . If unusual service conditions for equipment exist and cannot be eliminated, specify them in paragraph below. See Editing Instruction No.5 in the Evaluations. Unusual Service Conditions: Engine-generator equipment and installation are required to operate under the following conditions: Below is an example only. Revise to list unusual conditions. [High salt-dust content in the air due to sea-spray evaporation] . ENGINE In first paragraph below, revise or insert specific fuel grade requirements to suit local use. Fuel: Fuel oil, GradeDF-2. Rated Engine Speed: 1800 rpm. Maximum Piston Speed for Four-Cycle Engines: 2250 fpm . Lubrication System: The following items are mounted on engine or skid: Filter and Strainer: Rated to remove 90 percent of particles 5 micrometers and smaller while passing full flow. Thermostatic Control Valve: Control flow in system to maintain optimum oil temperature. Unit shall be capable of full flow and is designed to be fail-safe. Crankcase Drain: Arranged for complete gravity drainage to an easily removable container with no disassembly and without use of pumps, siphons, special tools, or appliances. Engine Fuel System: Retain first two subparagraphs below for diesel-fueled engine; retain last subparagraph for natural-gas- and LP-gas-fueled engine. Main Fuel Pump: Mounted on engine. Pump ensures adequate primary fuel flow under starting and load conditions. Relief-Bypass Valve: Automatically regulates pressure in fuel line and returns excess fuel to source. Retain paragraph below where required by NFPA110, which prescribes engine water-jacket temperature requirements. Coordinate with Drawings for electrical supply. Coolant Jacket Heater: Electric-immersion type, factory installed in coolant jacket system. Comply with NFPA110 requirements for Level1 equipment for heater capacity. Governor: Adjustable isochronous, with speed sensing. ENGINE COOLING SYSTEM Coordinate paragraph below with Drawings. See Editing Instruction No.6 in the Evaluations. Description: Closed loop, liquid cooled, with radiator factory mounted on engine-generator-set mounting frame and integral engine-driven coolant pump. Radiator: Rated for specified coolant. Revise subparagraph below if aluminum core is permissible. Radiator Core Tubes: Nonferrous-metal construction other than aluminum. Delete first subparagraph below if separate expansion tank is in design. Size of Radiator: Adequate to contain expansion of total system coolant from cold start to 110 percent load condition. Fan: Driven by multiple belts from engine shaft. Coolant: Solution of 50 percent ethylene-glycol-based antifreeze and 50 percent water, with anticorrosion additives as recommended by engine manufacturer. Retain first paragraph below if containment of coolant expansion by radiator is marginal or inadequate. Coordinate with Drawings. Expansion Tank: Constructed of welded steel plate and rated to withstand maximum closed-loop coolant system pressure for engine used. Equip with gage glass and petcock. Temperature Control: Self-contained, thermostatic-control valve modulates coolant flow automatically to maintain optimum constant coolant temperature as recommended by engine manufacturer. Coolant Hose: Flexible assembly with inside surface of nonporous rubber and outer covering of aging-, ultraviolet-, and abrasion-resistant fabric. Rating: 50-psig maximum working pressure with coolant at 180degF, and noncollapsible under vacuum. End Fittings: Flanges or steel pipe nipples with clamps to suit piping and equipment connections. FUEL SUPPLY SYSTEM In paragraph below, retain NFPA30 for diesel-engine units and NFPA54 and NFPA58 for gas-engine units. Comply with NFPA30. For diesel engines, edit first four paragraphs and associated subparagraphs below. Base-Mounted Fuel Oil Tank: Factory installed and piped, complying with UL142 fuel oil tank. Features include the following: Tank level indicator. Consult tank manufacturers about capacities available for size of set in Project. Capacity: Fuel for forty-eight hours' continuous operation at 100 percent rated power output. Vandal-resistant fill cap. Determine applicable codes and regulations, and coordinate below with Drawings. Containment Provisions: Comply with requirements of authorities having jurisdiction. ENGINE EXHAUST SYSTEM Retain one of three "Muffler" paragraphs below (typically Residential). Muffler: Critical type, sized as recommended by engine manufacturer; sound level measured at a distance of 10 feet from exhaust discharge shall be 85dBA or less. Muffler: Residential type, sized as recommended by engine manufacturer; sound level measured at a distance of 10 feet from exhaust discharge shall be 95dBA or less. Muffler: Industrial type, sized as recommended by engine manufacturer; sound level in the 20- to 75-Hz frequency band measured at a distance of 25 feet from exhaust discharge shall be 87dBA or less. Coordinate remaining paragraphs with Drawings. Condensate Drain for Muffler: Schedule40, black steel pipe connected to muffler drain outlet through a petcock. Connection from Engine to Exhaust System: Flexible section of corrugated stainless-steel pipe. Connection from Exhaust Pipe to Muffler: Stainless-steel expansion joint with liner. Exhaust Piping External to Engine: ASTMA53/A53M, Schedule40, welded, black steel, with welded joints and fittings. COMBUSTION-AIR INTAKE Retain second option below if filters may not be serviced as often as recommended. If air contaminant level is excessive, consult manufacturers to determine if special filtration of combustion air is needed. Description: [Standard] [Heavy]-duty, engine-mounted air cleaner with replaceable dry-filter element and "blocked filter" indicator. STARTING SYSTEM Description: [12] [24]-V electric, with negative ground and including the following items: Components: Sized so they will not be damaged during a full engine-cranking cycle with ambient temperature at maximum specified in "Environmental Conditions" Paragraph in "Service Conditions" Article. Cranking Motor: Heavy-duty unit that automatically engages and releases from engine flywheel without binding. Retain first option in subparagraph below if system description in Part1 "Quality Assurance" Article specifies NFPA110, Level1 or 2; otherwise, retain second. See Editing Instruction No.7 in the Evaluations. Cranking Cycle: As required by NFPA110 for system level specified. First option in subparagraph below complies with NFPA110 requirements. Second is a more conservative rule used for some industrial applications. Battery: Adequate capacity within ambient temperature range specified in "Environmental Conditions" Paragraph in "Service Conditions" Article to provide specified cranking cycle at least three times without recharging. Coordinate subparagraph below with Drawings. Battery Cable: Size as recommended by engine manufacturer for cable length indicated. Include required interconnecting conductors and connection accessories. Retain first subparagraph below if compartment is required. Battery Compartment: Factory fabricated of metal with acid-resistant finish and thermal insulation. Thermostatically controlled heater shall be arranged to maintain battery above 10degC regardless of external ambient temperature within range specified in "Environmental Conditions" Paragraph in "Service Conditions" Article. Include accessories required to support and fasten batteries in place. Battery-Charging Alternator: Factory mounted on engine with solid-state voltage regulation and 35-A minimum continuous rating. Battery Charger: Current-limiting, automatic-equalizing and float-charging type. Unit shall comply with UL1236 and include the following features: Operation: Equalizing-charging rate of 10A shall be initiated automatically after battery has lost charge until an adjustable equalizing voltage is achieved at battery terminals. Unit shall then be automatically switched to a lower float-charging mode and shall continue to operate in that mode until battery is discharged again. Automatic Temperature Compensation: Adjust float and equalize voltages for variations in ambient temperature from minus 40degC to plus 60degC to prevent overcharging at high temperatures and undercharging at low temperatures. Automatic Voltage Regulation: Maintain constant output voltage regardless of input voltage variations up to plus or minus 10 percent. Ammeter and Voltmeter: Flush mounted in door. Meters shall indicate charging rates. First subparagraph below covers sensing for safety indications on control and monitoring panel. NFPA110 requires sensing for Level1 systems and makes sensing optional for Level2 systems. Edit to suit Project. See Editing Instruction No.4 in the Evaluations. Safety Functions: Sense abnormally low battery voltage and close contacts providing low battery voltage indication on control and monitoring panel. Sense high battery voltage and loss of ac input or dc output of battery charger. Either condition shall close contacts that provide a battery-charger malfunction indication at system control and monitoring panel. Enclosure and Mounting: NEMA250, Type1, wall-mounted cabinet. CONTROL AND MONITORING This Article specifies the subsystem that monitors, protects, and controls the engine generator. See Editing Instruction No.8 in the Evaluations. Functional Description: When mode-selector switch on the control and monitoring panel is in the automatic position, remote-control contacts in one or more separate automatic transfer switches initiate starting and stopping of the generator set. When mode-selector switch is switched to the on position, the generator set starts. The off position of the same switch initiates generator-set shutdown. When generator set is running, specified system or equipment failures or derangements automatically shut down the generator set and initiate alarms. Operation of a remote emergency-stop switch also shuts down the generator set. Configuration: Operating and safety indications, protective devices, basic system controls, and engine gages shall be grouped in a common control and monitoring panel mounted on the generator set. Mounting method shall isolate the control panel from generator-set vibration. Indicating and protective devices and controls shall include those required by NFPA110 for a Level[1] [2] system, and the following: Retain nine subparagraphs below with either of two paragraphs above. AC voltmeter. AC ammeter. AC frequency meter. DC voltmeter (alternator battery charging). Engine-coolant temperature gage. Engine lubricating-oil pressure gage. Running-time meter. Ammeter-voltmeter, phase-selector switch(es). Generator-voltage adjusting rheostat. Retain five subparagraphs below for manually starting units (not covered by NFPA110). Coordinate with Drawings. See Evaluations for typical local and remote alarm indications and shutdowns. Retain two subparagraphs below if required. Fuel tank derangement alarm. Fuel tank high-level shutdown of fuel supply alarm. Retain subparagraph below for units with "generator protector" feature. Generator overload. Supporting Items: Include sensors, transducers, terminals, relays, and other devices and include wiring required to support specified items. Locate sensors and other supporting items on engine or generator, unless otherwise indicated. Retain one of two paragraphs and associated subparagraphs below or delete both to suit Project or applicable codes and standards. Evaluations discuss what will be obtained by selecting first paragraph. Coordinate with Drawings. Common Remote Audible Alarm: Comply with NFPA110 requirements for Level1 systems. Include necessary contacts and terminals in control and monitoring panel. Retain five subparagraphs below for automatically starting systems. Overcrank shutdown. Coolant low-temperature alarm. Control switch not in auto position. Battery-charger malfunction alarm. Battery low-voltage alarm. Retain paragraph below for systems required to comply with NFPA99 or where otherwise needed. Revise if all indications required by NFPA99 are not needed. Coordinate with Drawings. Remote Alarm Annunciator: Comply with NFPA99. Labeled LED shall identify each alarm event. Common audible signal shall sound for alarm conditions. Silencing switch in face of panel shall silence signal without altering visual indication. Connect so that after an alarm is silenced, clearing of initiating condition will reactivate alarm until silencing switch is reset. Cabinet and faceplate are surface- or flush-mounting type to suit mounting conditions indicated. Coordinate below with Drawings. Remote Emergency-Stop Switch: Flush; wall mounted, unless otherwise indicated; and labeled. Push button shall be protected from accidental operation. GENERATOR OVERCURRENT AND FAULT PROTECTION Retain one or more items from this Article to specify disconnect switch(es) and protective devices for the generator (alternator) component of the generator set. See Editing Instruction No.10 in the Evaluations. Retain one of first four paragraphs and associated subparagraphs below. Retain first for units smaller than 200 kW where budget constraints are severe. Device provides little or no generator protection and no selectivity with downstream circuit protective devices. Generator Circuit Breaker: Molded-case, thermal-magnetic type; 100 percent rated; complying with NEMAAB1 and UL489. Tripping Characteristic: Designed specifically for generator protection. Trip Rating: Matched to generator rating. Shunt Trip: Connected to trip breaker when generator set is shut down by other protective devices. Mounting: Adjacent to or integrated with control and monitoring panel. GENERATOR, EXCITER, AND VOLTAGE REGULATOR Comply with NEMAMG1 and specified performance requirements. Drive: Generator shaft shall be directly connected to engine shaft. Exciter shall be rotated integrally with generator rotor. Electrical Insulation: ClassH or ClassF. Stator-Winding Leads: Brought out to terminal box to permit future reconnection for other voltages if required. Construction shall prevent mechanical, electrical, and thermal damage due to vibration, overspeed up to 125 percent of rating, and heat during operation at 110 percent of rated capacity. Coordinate first paragraph below with "Generator-Set Performance" Article selected. Excitation shall use no slip or collector rings, or brushes, and shall be arranged to sustain generator output under short-circuit conditions as specified. Enclosure: Dripproof. Delete first paragraph below for systems where instrument transformers are housed in control and power panel. Instrument Transformers: Mounted within generator enclosure. Voltage Regulator: Solid-state type, separate from exciter, providing performance as specified. Adjusting rheostat on control and monitoring panel shall provide plus or minus 5 percent adjustment of output-voltage operating band. Provide automatic compensation for feeder voltage drop between the generator output terminals and the distribution panel, to maintain stable voltage at the panel. Retain paragraph below if required. Strip Heater: Thermostatically controlled unit arranged to maintain stator windings above dew point. Retain both paragraphs below for units specified for "critical" performance. Coordinate with "Generator-Set Performance" Article selected. See "Specifying Considerations" Article in the Evaluations for discussions on sensitive electronic equipment and nonlinear generator loads and on supplying significant harmonic currents. Windings: Two-thirds pitch stator winding and fully linked amortisseur winding. Subtransient Reactance: 12 percent, maximum. OUTDOOR GENERATOR-SET ENCLOSURE Retain one of first two paragraphs and associated subparagraphs below to define basic outdoor-enclosure type. Edit to specify enclosure features required; e.g., stainless steel for tropical marine environment. Coordinate with Drawings. Description: Vandal-resistant, weatherproof steel housing, wind resistant up to 100 mph. Multiple panels shall be lockable and provide adequate access to components requiring maintenance. Panels shall be removable by one person without tools. Instruments and control shall be mounted within enclosure. FINISHES Indoor and Outdoor Enclosures and Components: Manufacturer's standard enamel over corrosion-resistant pretreatment and compatible standard primer. SOURCE QUALITY CONTROL Prototype Testing: Factory test engine-generator set using same engine model, constructed of identical or equivalent components and equipped with identical or equivalent accessories. Consider requiring Level1 compliance below for other than Level1 installations to obtain benefits of specific standard requirements. Tests: Comply with NFPA110, Level1 energy converters in Paragraphs3.2.1, 3.2.1.1, and 3.2.1.2. Generator Tests: Comply with IEEE115. Components and Accessories: Items furnished with installed unit that are not identical to those on tested prototype shall have been factory tested to demonstrate compatibility and reliability. Project-Specific Equipment Tests: Before shipment, factory test engine-generator set and other system components and accessories manufactured specifically for this Project. Perform tests at rated load and power factor. Include the following tests: Full load run. Maximum power. Voltage regulation. Transient and steady-state governing. Single-step load pickup. Safety shutdown. Retain subparagraph below if factory tests will be witnessed by Owner's representative. Coordinate below with Part1 "Submittals" Article. Report factory test results within 10 days of completion of test. EXECUTION EXAMINATION Examine areas, equipment bases, and conditions, with Installer present, for compliance with requirements for installation and other conditions affecting packaged engine-generator performance. Examine roughing-in of piping systems and electrical connections. Verify actual locations of connections before packaged engine-generator installation. Proceed with installation only after unsatisfactory conditions have been corrected. CONCRETE BASES Coordinate size and location of concrete bases. Verify structural requirements with structural engineer. Concrete base is specified in Division16 Section "Basic Electrical Materials and Methods," and concrete materials and installation requirements are specified in Division3. INSTALLATION Comply with packaged engine-generator manufacturers' written installation and alignment instructions and with NFPA110. Install packaged engine generators level on concrete base. Coordinate subparagraph below with Drawings and Division15 Section "Mechanical Vibration and Seismic Controls." Retain second option for equipment supported on slabs-on-grade. Vibration Isolation: Mount packaged engine generators on [rubber pads] [restrained spring isolators] with a minimum deflection of . Vibration isolation devices and installation requirements are specified in Division15 Section "Mechanical Vibration and Seismic Controls." If retaining first paragraph below, delete "Concrete Bases" Article. Vibration Isolation: Mount packaged engine generators on vibration isolation equipment base as specified in Division15 Section "Mechanical Vibration and Seismic Controls." Install packaged engine generator to provide access, without removing connections or accessories, for periodic maintenance. Delete first paragraph and subparagraphs below if radiator is engine mounted or shown on Drawings and specified in Division15 Sections. Install exhaust-system piping. Extend to point of termination outside structure. Size piping according to manufacturer's written instructions. Retain first subparagraph below for long horizontal exhaust piping. Install condensate drain piping for engine exhaust system. Extend drain piping from low points of exhaust system and from muffler to condensate traps and to point of disposition. Support exhaust piping and muffler with pipe hangers spaced a maximum of 20 feet horizontally and at each floor vertically. Pipe hangers are specified in Division15 Section "Hangers and Supports." Restrain exhaust piping and mufflers with cable-type bracing assemblies. Cable-type bracing assemblies are specified in Division16 Section "Seismic Controls for Electrical Work." Electrical Wiring: Install electrical devices furnished by equipment manufacturers but not specified to be factory mounted. CONNECTIONS Coordinate piping installations and specialty arrangements with schematics on Drawings and with requirements specified in piping systems. If Drawings are explicit enough, these requirements may be reduced or omitted. Piping installation requirements are specified in Division15 Sections. Drawings indicate general arrangement of piping and specialties. The following are specific connection requirements: Install fuel, cooling-system, and exhaust-system piping adjacent to packaged engine generator to allow service and maintenance. Connect cooling-system water supply and drain piping to diesel-engine heat exchangers. Install flexible connectors at connections to engine generator and remote radiator. Connect fuel piping to engines with a gate valve and union. Diesel storage tanks, tank accessories, piping, valves, and specialties for fuel systems outside the building are specified in Division2 Section "Fuel Oil Distribution." Diesel fuel piping, valves, and specialties inside the building are specified in Division15 Section "Fuel Oil Piping." Natural- and LP-gas piping, valves, and specialties for gas distribution outside the building are specified in Division2 Section "Natural Gas Distribution." Natural- and LP-gas piping, valves, and specialties for gas piping inside the building are specified in Division15 Section "Fuel Gas Piping." Connect exhaust-system piping to engines. Ground equipment according to Division16 Section "Grounding and Bonding." Connect wiring according to Division16 Section "Conductors and Cables." Tighten electrical connectors and terminals according to manufacturer's published torque-tightening values. If manufacturer's torque values are not indicated, use those specified in UL486A and UL486B. IDENTIFICATION Identify system components according to Division15 Section "Mechanical Identification" and Division16 Section "Electrical Identification." FIELD QUALITY CONTROL Retain paragraph below to require a factory-authorized service representative to perform, or assist Contractor with, field inspections, tests, and adjustments. Retain one of two options to suit Project; delete both to require only an inspection before field testing. Manufacturer's Field Service: Engage a factory-authorized service representative to inspect,test, and adjust field-assembled components and equipment installation, including connections,and to assist in field testing. Report results in writing. Retain one of three paragraphs below. Perform the following field tests and inspections and prepare test reports: Retain subparagraphs below with either of last two paragraphs above. Edit to suit Project. Delete subparagraphs if testing will be performed by Owner-engaged testing and inspecting agency. Perform each electrical test and visual and mechanical inspection stated in NETAATS, Sections7.15.2.1 and 7.22.1 (except for vibration baseline test). Certify compliance with test parameters. Perform tests recommended by manufacturer. NFPA110 Acceptance Tests: Perform tests required by NFPA110 that are additional to those specified here including, but not limited to, the following: Single-step full-load pickup test. Battery Tests: Equalize charging of battery cells according to manufacturer's written instructions. Record individual cell voltages. Measure charging voltage and voltages between available battery terminals for full-charging and float-charging conditions. Check electrolyte level and specific gravity under both conditions. Test for contact integrity of all connectors. Perform an integrity load test and a capacity load test for the battery. Verify acceptance of charge for each element of the battery after discharge. Verify that measurements are within manufacturer's specifications. Battery-Charger Tests: Verify specified rates of charge for both equalizing and float-charging conditions. System Integrity Tests: Methodically verify proper installation, connection, and integrity of each element of engine-generator system before and during system operation. Check for air, exhaust, and fluid leaks. Delete subparagraph below for short, unrestricted exhaust systems. Exhaust-System Back-Pressure Test: Use a manometer with a scale exceeding 40-inch wg. Connect to exhaust line close to engine exhaust manifold. Verify that back pressure at full-rated load is within manufacturer's written allowable limits for the engine. Verify local requirements and delete first subparagraph below for most projects. Few jurisdictions require this test for emergency or standby generator sets. Exhaust Emissions Test: Comply with applicable government test criteria. Voltage and Frequency Transient Stability Tests: Use recording oscilloscope to measure voltage and frequency transients for 50 and 100 percent step-load increases and decreases, and verify that performance is as specified. Harmonic-Content Tests: Measure harmonic content of output voltage under 25 percent and at 100 percent of rated linear load. Verify that harmonic content is within specified limits. Retain subparagraph below for projects subject to unwanted or illegal generator-set noise intrusion into adjacent properties or activities. Coordinate with Drawings and with requirements in Part1 "Submittals" and "Quality Assurance" articles and in Part2 "Engine Exhaust System" Article. Noise Level Tests: Measure A-weighted level of noise emanating from generator-set installation, including engine exhaust and cooling-air intake and discharge, at [four] locations [on the property line] , and compare measured levels with required values. Coordinate tests with tests for transfer switches and run them concurrently. Test instruments shall have been calibrated within the last 12 months, traceable to standards of the National Institute for Standards and Technology, and adequate for making positive observation of test results. Make calibration records available for examination on request. Leak Test: After installation, charge system and test for leaks. Repair leaks and retest until no leaks exist. Operational Test: After electrical circuitry has been energized, start units to confirm proper motor rotation and unit operation. Test and adjust controls and safeties. Replace damaged and malfunctioning controls and equipment. Remove and replace malfunctioning units and [retest] [reinspect] as specified above. Retest: Correct deficiencies identified by tests and observations and retest until specified requirements are met. Report results of tests and inspections in writing. Record adjustable relay settings and measured insulation resistances, time delays, and other values and observations. Attach a label or tag to each tested component indicating satisfactory completion of tests. STARTUP SERVICE Delete first paragraph below if factory-authorized service representative is not required. Engage a factory-authorized service representative to perform startup service. Inspect field-assembled components and equipment installation, including piping and electrical connections. Report results in writing. Complete installation and startup checks according to manufacturer's written instructions. DEMONSTRATION Engage a factory-authorized service representative to train Owner's maintenance personnel to adjust, operate, and maintain packaged engine generators. Refer to Division1 Section "[Closeout Procedures] [Demonstration and Training]." Retain below if transfer switches are in Project. Coordinate this training with that for transfer switches. 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