ATTACHMENT K-600 kW-Bi-Fuel-18.1L-Engine Generator Specification.docx

SECTION 263213 – BI-FUEL-ENGINE-DRIVEN GENERATOR SETS

GENERAL

SUMMARY

Section Includes:

Diesel engine.

Diesel fuel-oil system.

Bi-Fuel operation Control and monitoring.

Sub Base Fuel Tank Generator overcurrent and fault protection.

Generator, exciter, and voltage regulator.

Outdoor engine generator enclosure.

Vibration isolation devices.

DEFINITIONS

EPS: Emergency power supply.

EPSS: Emergency power supply system.

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.

ACTION SUBMITTALS

Product Data: For each type of product.

Include rated capacities, operating characteristics, electrical characteristics, and furnished specialties and accessories.

Include thermal damage curve for generator.

Include time-current characteristic curves for generator protective device.

Include fuel consumption in gallons per hour (liters per hour) at 0.8 power factor at 0.5, 0.75, and 1.0 times generator capacity.

Include generator efficiency at 0.8 power factor at 0.5, 0.75, and 1.0 times generator capacity.

Include airflow requirements for cooling and combustion air in cubic feet per minute (cubic meters per minute) at 0.8 power factor, Provide Drawings indicating requirements and limitations for location of air intake and exhausts.

Include generator characteristics, including, but not limited to, kilowatt rating, efficiency, reactances, and short-circuit current capability.

Shop Drawings:

Dimensioned Outline Drawings of Equipment Unit: With engine and generator mounted on rails, identify center of gravity and total weight for provided components; fuel tank, enclosure, silencer, base tank, each piece of equipment not integral to the engine generator.

Include details of equipment assemblies. Indicate dimensions, weights, loads, required clearances, method of field assembly, components, and location and size of each field connection.

Identify fluid drain ports and clearance requirements for proper fluid drain.

Design calculations for selecting vibration isolators and seismic restraints and for designing vibration isolation bases.

Vibration Isolation Base Details: Detail fabrication including anchorages and attachments to structure and to supported equipment. Include base weights.

Include diagrams for power, signal, and control wiring. Complete schematic, wiring, and interconnection diagrams indicating terminal markings for engine generators and functional relationship between all electrical components.

Rigging Information: Indicate location of each lifting attachment, generator-set center of gravity, and total package weight in submittal drawings.

INFORMATIONAL SUBMITTALS

Seismic Qualification Data: Certificates, for engine generator, accessories, and components, from manufacturer.

Basis for Certification: Indicate whether withstand certification is based on actual test of assembled components or on calculation.

Detailed description of equipment anchorage devices on which the certification is based and their installation requirements.

Source Quality-Control Reports: Including, but not limited to, the following:

Certified summary of prototype-unit test report. Perform tests at rated load and power factor. Provide the following test results:

Maximum Power Level Maximum Motor Starting (sKVA) Structural Soundness Torsional Analysis Transient Response Alternator Temperature Rise Engine Cooling Requirements (unit mounted radiator) Harmonic Analysis (per IEEE-115 and ANSI-100) Voltage Regulation Endurance Testing Certified Test Reports: For components and accessories that are equivalent, but not identical, to those tested on prototype unit.

Report of factory test on units to be shipped for this Project, indicating evidence of compliance with specified requirements.

Report of sound generation.

Report of exhaust emissions indicating compliance with applicable regulations.

Certified Torsional Vibration Compatibility: Comply with NFPA 110.

Field quality-control reports. Field start up report and unit in-service documentation, including load bank test results if applicable.

CLOSEOUT SUBMITTALS

Operation and Maintenance Data: For packaged engine generators to include in emergency, operation, and maintenance manuals. Include manufacturer's recommended maintenance and periodic testing plan in accordance with NFPA 110, Chapter 8.

Furnish extra materials required by local Authority Having Jurisdiction (AHJ) and defined in project documents that match products installed and that are packaged with protective covering for storage and identified with labels describing contents.

QUALITY ASSURANCE

The generator set covered by these specifications shall be designed, tested, rated, assembled and installed in accordance with all applicable standards below:

CSA C22.2, No. 14-M91 Industrial Control Equipment.

CSA C22.2, No. 100 Motors and Generators

CSA 282-15

EN 61000-6

EN 55011

FCC Part 15 Subpart B

ISO 8528

IEC 61000

UL 508

UL 2200

UL 142

UL 6200

Designed to allow for installed compliance to NFPA 37, NFPA 70, NFPA 99 and NFPA 110 Manufacturer Qualifications:

Current certificate holder for ISO 9001 compliance.

The power system shall be produced by a manufacturer who has produced this type of equipment for a period of at least 25 years and who maintains a service organization of factory-authorized generator technicians available twenty-four hours a day throughout the year.

Manufacturing and assembly of products must be done in the United States using domestically sourced materials to the extent practical.

Installer Qualifications: An authorized representative who is trained and certified by the manufacturer on stationary power systems.

WARRANTY

Manufacturer's Warranty: 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.

Warranty: 5 Year Comprehensive from date of Substantial Completion.

A Comprehensive Warranty is defined as the manufacturer covering replacement parts, labor, and limited technician travel costs for covered warranty repairs during the listed warranty period. A Limited warranty is defined as the manufacturer covering replacement parts, labor, and limited technician travel costs for the first 2 years and then replacement parts for the remainder of the listed warranty period.

PRODUCTS

MANUFACTURERS

Basis-of-Design Product: Subject to compliance with requirements, provide Generac Power Systems, Inc. Model MB600, 600 kW, 18.1L with a K0600124Y23 - 600kW alternator and integrated paralleling controls. The Three Phase generator shall be rated for 600 kW at 480 volts and 60 Hz, at 0.8 power factor lagging while operating at a maximum ambient temperature of 104 Fahrenheit and maximum altitude of 3500 feet above sea level without reduction in electrical output capacity.

Source Limitations: Obtain packaged engine generators and auxiliary components from single source from single manufacturer. "Source Limitations: Obtain packaged engine generators and auxiliary components from single supplier. The equipment supplied and installed shall meet the requirements of NEC and all applicable local codes and regulations. All equipment shall be new, of current production. There shall be one source responsibility for warranty; parts and service through a local representative with factory certified service personnel.

PERFORMANCE REQUIREMENTS

NFPA Compliance:

Comply with NFPA 37.

Comply with NFPA 70.

Comply with NFPA 99.

Comply with NFPA 110 requirements for Level 1 EPSS.

UL Compliance: Engine generator assembly and factory enclosure (if provided) shall be UL 2200 listed.

Engine Exhaust Emissions: Comply with applicable US EPA, State and Local Government requirements. Diesel Stationary Emergency: Engines shall be certified by the manufacturer to comply with 40 CFR Part 60 Subpart IIII.

ENGINE GENERATOR ASSEMBLY DESCRIPTION

Factory-assembled and -tested, water-cooled engine, with brushless generator and accessories.

Electrical Components, Devices, and Accessories: Listed and labeled as defined in NFPA 70, by a qualified testing agency, and marked for intended location and use.

Power Rating: Standby.

Service Load: The generator system shall consist of multiple Generac model 600 kW, 18.1L with a K0600124Y23 - 600kW alternator. Each generator unit shall provide 600 kW and 750 kVA while operating at the maximum ambient operating temperature and elevation specified in the project documents.

Power Factor: 0.8 lagging.

Frequency: 60 Hz.

Voltage: 480 Volts ac.

Phase: Three Phase, Four Wire.

Induction Method: Turbocharged.

Governor: Adjustable isochronous, with speed sensing.

Mounting Frame: Structural steel framework to maintain alignment of mounted components without depending on concrete foundation. Provide lifting attachments sized and spaced to prevent deflection of base during lifting and moving.

Nameplates: For each major system component to identify manufacturer’s name, model and serial number of component.

Coordinate "Capacities and Characteristics" Paragraph below with prototype test requirements in "Informational Submittals" and "Source Quality Control" articles.

Engine Generator Performance:

Steady-State Voltage Operational Bandwidth: 3 percent of rated output voltage from no load to full load.

Transient Voltage Performance: Not more than 10.21 percent variation for 50 percent step-load increase or decrease at unity power factor. Voltage shall recover and remain within the steady-state operating band within three seconds.

Steady-State Frequency Operational Bandwidth: 0.5 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 3.5 Hertz variation for 50 percent step-load increase or decrease at unity power factor. Frequency shall recover and remain within the steady-state operating band within five seconds.

Output Waveform: At no load, harmonic content measured line to line or line to neutral shall not exceed 5 percent total and 3 percent for single harmonics. Telephone influence factor, determined in accordance with NEMA MG 1, shall not exceed 50 percent.

Sustained Short-Circuit Current: For a three-phase, bolted short circuit at system output terminals, 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 generator system components.

Start time to comply with NFPA system requirements.

Parallel Engine Generators The generator controller shall be capable of paralleling with other generators of the same controller type using a dedicated communications network between the generator controllers and integrated (commonly referred as onboard) paralleling capabilities.

The controller shall support paralleling up to sixteen generators on a common bus.

Automatic reactive output power control and load sharing between engine generators operated in parallel.

The parallel generator system controller shall be capable of managing six levels of load shedding (Automatic regulation, automatic connection to a common bus, and automatic synchronization, with manual controls and instruments to monitor and control paralleling functions).

Digital communications shall enhance system operation but shall not be required to synchronize or operate the generators in parallel. Systems that require external control hardware or digital communications to synchronize and operate the generators in parallel are not acceptable. During a failure of generator load share communications (analog or digital), generators must be able to start, parallel, and load share.

Control systems that have any systemic single point failure modes are not acceptable. This is inclusive of systems that rely on reactive cross current and isochronous load sharing control loops. During start-up commission, all load share and communication lines will be opened while the generators are running. The generators must continue running and continue to share load.

Protective Relays. The controller shall provide a standard set of protective relay functions with programmable limits and time delays that include Under Voltage (27), Reverse Power (32R), Over Power (32O), Loss of Field (40 Reverse VARS), Over Voltage (59), Over Frequency (81O), and Over Current with Voltage Range.

Circuit Breaker/Contactor Control The controller shall be capable of operating a circuit breaker or contactor to apply electricity to the parallel electrical bus.

The controller system shall have a contact to provide an energizing signal to open or close the circuit breaker or contactor.

The controller will monitor current to detect an individual failure and open the respective generator circuit breaker or contactor (separating the generator from the common bus).

ENGINE PERFORMANCE

Fuel: ASTM D975, diesel fuel oil, Grade 2-D S15. Engine shall be capable of operating on hydrotreated vegetable oil blends (up to HVO 100) conforming to the EN 15940 specification without modification.

Bi-Fuel: Engine shall be suitable for Bi-Fuel operation. Engine shall be able to operate on simultaneous combustion of Diesel & Natural Gas. Engine-Generator shall include factory installation, warranty, UL2200 Listing & EPA certification for Diesel & Bi-Fuel operation. 3rd party installation, warranty, UL listing & EPA certification are not acceptable.

Rated Engine Speed: 1800 rpm.

Lubrication System to be engine mounted.

Oil filter shall be engine-mounted replaceable cartridge type with integral bypass valve, in accordance with manufacturer recommendations.

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.

Jacket Coolant Heater: Jacket water heater shall be sized per NFPA110 and UL listed to ensure that genset will start within the specified time period and ambient conditions.

Integral Cooling System: Closed loop, liquid cooled, with radiator factory mounted on engine generator set mounting frame and integral engine-driven coolant pump.

Coolant: Solution of 50 percent ethylene-glycol-based antifreeze and 50 percent water, with anticorrosion additives as recommended by engine manufacturer.

Expansion Tank: Constructed of welded steel plate and rated to withstand maximum closed-loop coolant system pressure for engine used. Equip with gauge 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.

Maximum Ambient Operating Temperature on Radiator: 122 degrees F (50 degrees C).

Coolant Hose: Flexible assembly with inside surface of nonporous rubber and outer covering of aging-, UV-, and abrasion-resistant fabric.

Rating: 50-psig (345-kPa) maximum working pressure with coolant at 180 deg F (82 deg C), and noncollapsible under vacuum.

Meets SAE 100R1A Type S, EN853 1SN, ISO 1436-1 Type 1SN a Fittings: Flanges or steel pipe nipples with clamps to suit piping and equipment connections.

Muffler/Silencer:

Critical type, sized as recommended by engine manufacturer and selected with exhaust piping system to not exceed engine manufacturer's engine backpressure requirements.

Silencer shall include catalytic Air-Intake Filter: Heavy duty, engine-mounted air cleaner with replaceable dry-filter element and "blocked filter" indicator.

Starting System: 12 or 24-V electric, with negative ground.

Cranking Cycle: As required by NFPA 110 for system level specified.

Battery: Lead acid, with capacity within ambient temperature range specified in "Performance Requirements" Article to provide specified cranking cycle as required by NFPA 110 for system level specified.

Battery-Charging Alternator: Factory mounted on engine with solid-state voltage regulation and 35 minimum continuous rating.

Battery Charger: Current-limiting, automatic-equalizing, and float-charging type designed for lead-acid batteries. Unit shall comply with UL 1236 and NFPA 110 Section 5.6.4.6 for Level 1 systems.:

DIESEL FUEL-OIL SYSTEM

Comply with NFPA 37.

Piping: Fuel-oil piping shall be Schedule 40 black steel, complying with requirements in Section 231113 "Facility Fuel-Oil Piping." Cast iron, aluminum, copper, and galvanized steel shall not be used in the fuel-oil system.

Main Fuel Pump: Mounted on engine to provide primary fuel flow under starting and load conditions.

Fuel Filtering: Remove water and contaminants larger than 2 microns.

Relief-Bypass Valve: Automatically regulates pressure in fuel line and returns excess fuel to source.

Subbase-Mounted, Double-Wall, Fuel-Oil Tank: Factory installed and piped, complying with NYC compliant UL 142 fuel-oil tank. Features include the following:

Tank level indicator.

Fuel-Tank Capacity: 1200 Gallons Leak detection in interstitial space.

Vandal-resistant fill cap.

Containment Provisions: Comply with requirements of authorities having jurisdiction.

Normal and emergency vents on the main tank and secondary containment space, sized according to NYC Compliant UL 142.

CONTROL AND MONITORING

Automatic Starting System Sequence of Operation: 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 engine generator. When mode-selector switch is switched to the on position, engine generator starts. The off position of same switch initiates engine generator shutdown. When engine generator is running, specified system or equipment failures or derangements automatically shut down engine generator and initiate alarms.

Manual Starting System Sequence of Operation: Switching on-off switch on the generator control panel to the on position starts engine generator. The off position of same switch initiates engine generator shutdown. When engine generator is running, specified system or equipment failures or derangements automatically shut down engine generator and initiate alarms.

Provide minimum run time control set for 15 minutes with override only by operation of a remote emergency-stop switch.

Control panel must comply with UL 6200. The controller shall meet ASTM B117 (salt spray test).

Remote Connectivity: Controller shall be capable of remote connectivity via RS485. Remote connectivity shall be provided by a physically separate module that can be secured, access limited, and/or physically removed to restrict and/or completely isolate the generator system from any outside control or monitoring.

Connection to Building Management: Provide connections for data transmission of indications to remote data terminals via Modbus.

Environmentally Hardened Design: Open circuit boards, edge cards, and PC ribbon cable connections are unacceptable.

PCB Construction: Circuit boards with surface-mounted components to provide vibration durability. Circuit boards utilizing large capacitors or heat sinks must utilize encapsulation methods to securely support these components.

Configuration:

Operating and safety indications, protective devices, basic system controls, and engine gauges shall be grouped in a common control and monitoring panel mounted on the engine generator. Mounting method shall isolate the control panel from engine generator vibration. Panel powered from the engine generator battery.

Control and Monitoring Panel:

Digital engine generator controller with integrated touch screen, controls, and microprocessor, capable of local and remote control, monitoring, and programming, with battery backup.

Instruments: Located on the control and monitoring panel and viewable during operation.

Engine lubricating-oil pressure gauge.

Engine-coolant temperature gauge.

DC voltmeter (alternator battery charging).

Running-time meter.

AC voltmeter, for each phase.

AC ammeter, for each phase.

AC frequency meter.

Generator-voltage adjusting feature.

Controls and Protective Devices: Controls, shutdown devices, and common alarm indication, including the following:

Cranking control equipment.

Run-Off-Auto switch.

Control switch not in automatic position alarm.

Overcrank alarm.

Overcrank shutdown device.

Low-water temperature alarm.

High engine temperature pre-alarm.

High engine temperature.

High engine temperature shutdown device.

Overspeed alarm.

Overspeed shutdown device.

Low fuel main tank.

Low-fuel-level alarm shall be initiated when the level falls below that required for operation for duration required for the indicated EPSS class.

Coolant low-level alarm.

Coolant low-level shutdown device.

Coolant high-temperature prealarm.

Coolant high-temperature alarm.

Coolant low-temperature alarm.

Coolant high-temperature shutdown device.

EPS load indicator.

Battery high-voltage alarm.

Low cranking voltage alarm.

Battery-charger malfunction alarm.

Battery low-voltage alarm.

Lamp test.

Contacts for local and remote common alarm.

Remote manual stop shutdown device.

Total engine run hours, non-resettable.

Engine generator metering, including voltage, current, hertz, kilowatt, kilovolt ampere, and power factor.

External Alarm & Status Relays: Provide a separate terminal block, factory wired to Form C dry contacts, for each alarm and status condition required by Building Management or other external systems as shown on electrical drawings.

Common Remote Panel with Common Audible Alarm: Include necessary contacts and terminals in control and monitoring panel. Remote panel shall be powered from the engine generator battery.

Remote Alarm Annunciator: An LED indicator light labeled with proper alarm conditions shall identify each alarm event, and a common audible signal shall sound for each alarm condition. 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.

Overcrank alarm.

Low water-temperature alarm.

High engine temperature pre-alarm.

High engine temperature alarm.

Low lube oil pressure alarm.

Overspeed alarm.

Low fuel main tank alarm.

Low coolant level alarm.

Low cranking voltage alarm.

Contacts for local and remote common alarm.

Audible-alarm silencing switch.

Air shutdown damper when used.

Run-Off-Auto switch.

Control switch not in automatic position alarm.

Fuel tank derangement alarm.

Fuel tank high-level shutdown of fuel supply alarm.

Lamp test.

Low-cranking voltage alarm.

Generator overcurrent-protective-device not-closed alarm.

Remote Emergency-Stop Switch: Provide remote emergency stop switch in quantity and style as shown on electrical drawings. Electrical contractor to coordinate exact location with engineer and local AHJ.

Engine Run Relay: The generator set shall be provided with a run relay which shall provide a double-pole, double-throw relay with 10-amp/ 250 VAC contacts to indicate that the generator is running. The run relay dry contacts can be used for energizing or de-energizing customer devices while the generator is running (e.g. louvers, indicator lamps, etc.)

Data Logging:

Event Logging – the controller keeps a record of up to 8,000 events with date and time locally for warning and shutdown faults. This event log can be downloaded onto a USB storage device or onto a PC through the service program.

Event Snapshot – the control system shall capture 15 seconds of critical data around the time a fault or warning. This data shall be viewable on the controller and downloadable.

Data Logging – the controller shall allow customized parameters to be logged based on a start trigger from the controller interface.

The parameters are selectable from all monitored parameters.

The sample period shall be configurable from 1 second to 1 day.

The collected data shall be stored on a USB storage device plugged into the control panel.

GENERATOR OVERCURRENT AND FAULT PROTECTION

Overcurrent protective devices shall be coordinated to optimize selective tripping when a short circuit occurs.

Overcurrent protective devices for the entire EPSS shall be coordinated to optimize selective tripping when a short circuit occurs. Coordination of protective devices shall consider both utility and EPSS as the voltage source.

Overcurrent protective devices for the EPSS shall be accessible only to authorized personnel.

Generator Overcurrent Protective Device:

Unit mounted circuit breakers. Rating, ampacity, accessories, as shown on drawings or as listed below:

Molded-case circuit breaker, electronic-trip type; 100 percent rated; complying with UL 489:

Tripping Characteristics: Adjustable long-time and short-time delay and instantaneous.

Trip Settings: Selected to coordinate with generator thermal damage curve.

Shunt Trip: Connected to trip breaker when engine generator is shut down by other protective devices.

Mounting: Adjacent to, or integrated with, control and monitoring panel.

Generator Controller Integrated Alternator Protective Functions:

Senses clearing of a fault by other overcurrent devices and controls recovery of rated voltage to avoid overshoot.

GENERATOR, EXCITER, AND VOLTAGE REGULATOR

Comply with NEMA MG 1.

Drive: Generator shaft shall be directly connected to engine shaft. Exciter shall be rotated integrally with generator rotor.

Electrical Insulation: Class H.

Stator-Winding Leads: Brought out to terminal box to permit future reconnection for other voltages if required.

Range: Provide range of output voltage by adjusting the excitation level.

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. Stator shall be skewed construction to minimize harmonic voltage distortion.

Enclosure: Drip proof.

Instrument Transformers: Mounted within generator enclosure.

Voltage Regulator:

Voltage Regulator: Solid-state type, separate from exciter. The digital voltage regulator shall be microprocessor based with fully programmable operating and protection characteristics. The regulator shall maintain steady-state generator output voltage within +/- 0.25% for any constant load between no load and full load. The regulator shall be capable of sensing true RMS. The regulator shall provide an adjustable Volts/Hz slope regulation characteristic in order to optimize voltage and frequency response for site conditions.

Alternator Excitation: Permanent Magnet Generator (PMG) shall provide excitation power for optimum motor starting and short circuit performance.

The generator must accept rated load in one-step.

System Transient Voltage Performance: Alternator shall be capable of supplying 1610 sKVA with a voltage dip not more than 35% at 0.3 starting power factor. Sustained voltage dip data or manufacturer-published SKVA numbers based on unity PF alternator-only dynamometer testing will not be accepted.

Strip Heater: Thermostatically controlled unit arranged to maintain stator windings above dew point. The strip heater shall be wired directly to the incoming power distribution panel or load center.

Windings: Two-thirds pitch stator winding and fully linked amortisseur winding.

Alternator Tropical Coating: An additional coating of resin shall be applied to the alternator to protect in high humidity or tropical climates. Resin shall be an anti-fungal coating, protecting the alternator.

OUTDOOR ENGINE GENERATOR ENCLOSURE

0. Basis of design is a Sound Level 1.

0. Generator packaged within manufacturer's weather protective, sound attenuated enclosure. Enclosure and generator set shall be UL 2200 Listed as a system.

0. Enclosure Construction: Minimum 14 gauge construction. Roof construction shall be raised-seam, gasket-free interlocking panels. Rivets shall not be used on external painted surfaces. Design shall be rodent resistant.

0. Doors shall be equipped with lift-off pin and sleeve type hinges to allow access to the engine, alternator, and control panel. Hinges shall be adjustable for door alignment. Hinges and all exposed fasteners shall be stainless steel. Each door shall be equipped with minimum 2-point latching mechanism and identical keys. Perimeter of all door openings shall include polyethylene gasket.

0. Upward discharging exhaust hood for engine cooling airflow and exhaust.

0. Engine exhaust silencer mounted within enclosure discharge hood.

0. Enclosure Finish: Electrostatic applied powered paint, baked and finished to manufacturer's specifications. Finish system shall be subjected to the following tests:

6. ASTM D1186 - 87; 2.5+ mil Paint Thickness

6. ASTM D3363 - 92a; Material Hardness

6. ASTM D522 - B; Resistance to Cracking

6. ASTM D3359 - B; Adhesion

6. ASTM B117 D 1654; Resistant to Salt Water Corrosion

6. ASTM D1735 D 1654; Resistant to Humidity

6. ASTM 2794 93 (2004); Impact Resistance

6. SAE J1690 - UV Protection"

0. Enclosure Color: Manufacturer's standard color, or custom color matched based on architect's design with color sample provided to generator manufacturer.

0. Wind Rating: Enclosure shall be constructed to attain basic wind speed rating of 110 MPH; WIF 1.15, Exposure Category "C", Building Classification "Enclosed", Topographic Factor Kzt = 1. Wind Design Pressures: windward, 20.6 lb/ft^2; leeward, -12.9 lb/ft^2; roof, -18.0 lb/ft^2."

0. Snow Load Rating: Minimum 70 pounds per square foot.

0. Engine-Cooling Airflow through Enclosure: Maintain temperature rise of system components within required limits when unit operates at 110 percent of rated load for two hours with ambient temperature at top of range specified in system service conditions.

0. Sound Insulation: Enclosure and air discharge hood completely lined with reflective silver mylar faced sound attenuating closed cell foam that meets UL 94 HF1 standards for flammability (FMVSS 302 test method). Roof sound insulation panels shall include additional mechanical retention.

0. Sound Performance: The engine generator, while operating at full rated load, shall not exceed 81.00 dBA average measured at 23 ft (7 meters) from the engine generator in a free field environment.

0. Louvers: Fixed-engine, cooling-air inlet and discharge. Stormproof and drainable louvers prevent entry of rain and snow.

0. Distribution Panel for Accessory Loads: Accessory Load Panel: Provide an internal, factory mounted and wired, electrical distribution panel to serve accessory loads; including:

14. Engine block heater

14. Battery charger

14. Battery warmer (if included)

14. Enclosure lights (if included)

14. Enclosure heater (if included)

14. Accessory outlets

14. Motorized louvers (if included)

14. Other accessories (if included)

0. Lighting: Provide factory-wired, LED vapor-proof luminaires within housing. AC/DC lighting system for operation from engine batteries when AC power source is unavailable.

0. Convenience Outlet: Factory-wired convenience 120v duplex-outlet within enclosure, GFCI.

VIBRATION ISOLATION DEVICES

Elastomeric Isolator Pads: Oil- and water-resistant elastomer or natural rubber, arranged in single or multiple layers, molded with a nonslip pattern and galvanized-steel baseplates of sufficient stiffness for uniform loading over pad area, and factory cut to sizes that match requirements of supported equipment for units with a ratings 750kw or below.

Material: Standard neoprene separated by steel shims.

Vibration isolation devices shall not be used to accommodate misalignments or to make bends.

SOURCE QUALITY CONTROL

Prototype Testing: Factory test engine generator using same engine model, constructed of identical or equivalent components and equipped with identical or equivalent accessories.

Tests: Comply with IEEE 115 and with NFPA 110, Level 1 Energy Converters.

Project-Specific Equipment Tests: Before shipment, factory test engine generator and other system components and accessories manufactured specifically for this Project. Perform tests at rated load and power factor. Include the following tests:

Test components and accessories furnished with installed unit that are not identical to those on tested prototype to demonstrate compatibility and reliability.

Test generator, exciter, and voltage regulator as a unit.

Full load run.

Maximum power.

Voltage regulation.

Transient and steady-state governing.

Single-step load pickup.

Safety shutdowns.

Report factory test results within 10 days of completion of test.

FINISHES

Indoor and Outdoor Enclosures and Components: Manufacturer's standard finish over corrosion-resistant pretreatment and compatible primer.

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 for 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.

PREPARATION

Interruption of Existing Electrical Service: Do not interrupt electrical service to facilities occupied by Owner or others unless permitted under the following conditions and then only after arranging to provide temporary electrical service in accordance with requirements indicated:

Notify Project Manager in advance of proposed interruption of electrical service.

Do not proceed with interruption of electrical service without written permission.

INSTALLATION

Comply with NECA 1 and NECA 404.

Comply with packaged engine generator manufacturers' written installation and alignment instructions and with NFPA 110.

Equipment Mounting:

Install packaged engine generators on cast-in-place concrete equipment bases or steel dunnage as indicated on drawings.

Coordinate size and location of mounting bases for packaged engine generators.

Install unit with vibration isolation devices described in section 2.11.

Tests and Inspections: The supplier of the electric generating plant and associated items covered herein shall provide factory certified technicians to inspect the completed installation and to perform an initial startup inspection to include:

Ensuring the engine starts (both hot and cold) within the specified time.

Verification of engine parameters within specification.

Verify no load frequency and voltage, adjusting if required.

Test all automatic shutdowns of the engine-generator.

Perform a load test of the electric plant, ensuring full load frequency and voltage are within specification by using building load.

NFPA 110 Acceptance Tests: Perform tests required by NFPA 110 that are additional to those specified here, including, but not limited to, single-step full-load pickup test.

Battery and Charger Tests:

Measure charging voltage and voltages between available battery terminals for full-charging and float-charging conditions.

Verify that measurements are within manufacturer's specifications."

System Integrity Tests: 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.

Coordinate tests with tests for transfer switches and run them concurrently.

Operational Test: After electrical circuitry has been energized, start units to confirm proper motor rotation and unit operation for generator and associated equipment.

Test and adjust controls and safeties. Replace damaged and malfunctioning controls and equipment.

Remove and replace malfunctioning units and retest and 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.

DEMONSTRATION

Engage a factory-authorized service representative to train Owner's maintenance personnel to adjust, operate, and maintain packaged engine generators.

FIELD QUALITY CONTROL

Tests and Inspections: The supplier of the electric generating plant and associated items covered herein shall provide factory certified technicians to inspect the completed installation and to perform an initial startup inspection to include:

Ensuring the engine starts (both hot and cold) within the specified time.

Verification of engine parameters within specification.

Verify no load frequency and voltage, adjusting if required.

Test all automatic shutdowns of the engine-generator.

Perform a load test of the electric plant, ensuring full load frequency and voltage are within specification by using building load.

NFPA 110 Acceptance Tests: Perform tests required by NFPA 110 that are additional to those specified here, including, but not limited to, single-step full-load pickup test.

Battery and Charger Tests:

Measure charging voltage and voltages between available battery terminals for full-charging and float-charging conditions.

Verify that measurements are within manufacturer's specifications."

System Integrity Tests: 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.

Coordinate tests with tests for transfer switches and run them concurrently.

Operational Test: After electrical circuitry has been energized, start units to confirm proper motor rotation and unit operation for generator and associated equipment.

Test and adjust controls and safeties. Replace damaged and malfunctioning controls and equipment.

Remove and replace malfunctioning units and retest and 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.

MAINTENANCE SERVICE

Repair Service Capabilities:

The generator set supplier shall maintain service parts inventory for the entire power system at a central location which is accessible to the service location 24 hours per day, 365 days per year. The manufacturer of the generator set shall maintain a central parts inventory to support the supplier, covering all the major components of the power system, including: engines, alternators, control systems, paralleling electronics, and power transfer equipment.

The generator set shall be serviced by a local service organization that is trained and factory certified in generator set service. The supplier shall maintain an inventory of power system replacement parts in the local service location. Service vehicles shall be stocked with critical replacement parts. The service organization shall be on call 24 hours per day, 365 days per year. The service organization shall be physically located within 50 miles of the site.

The manufacturer shall maintain model and serial number records of each generator set provided for at least 20 years.

DEMONSTRATION

Engage a factory-authorized service representative to train Owner's maintenance personnel to adjust, operate, and maintain packaged engine generators.

END OF SECTION 263213