26_32_13_ENGINE_GENERATORS-SPECS.pdf

Beaufort County Facilities Beaufort County 800 MHz Building

03.22.2019 Beaufort, SC

26 32 13 – EMERGENCY GENERATOR

SECTION 26 32 13

EMERGENCY GENERATOR

PART 1 - GENERAL

1.01 SECTION INCLUDES

A. Packaged engine generator set.

B. Exhaust silencer and fittings.

C. Battery and charger.

1.02 REFERENCES

A. NEMA AB1 – Molded Case Circuit Breakers.

B. NECA/EGSA 404 - Recommended Practice for Installing Generator Sets; National

Electrical Contractors Association; 2007.

C. NEMA MG 1 - Motors and Generators; National Electrical Manufacturers

Association; 2006.

D. NFPA 70 - National Electrical Code; National Fire Protection Association; 2020.

E. NFPA 110 - Standard for Emergency and Standby Power Systems; National Fire

Protection Association; 2022.

1.03 SUBMITTALS

A. Shop Drawings: Indicate electrical characteristics and connection requirements.

Show plan and elevation views with overall and interconnection point dimensions, fuel consumption rate curves at various loads, ventilation and combustion air requirements, electrical diagrams including schematic and interconnection diagrams.

B. Product Data: Provide data showing dimensions, weights, ratings, interconnection points, and internal wiring diagrams for engine, generator, control panel, battery, battery rack, battery charger, exhaust silencer, vibration isolators, sub-base fuel tank, and radiator.

C. Test Reports: Indicate results of performance testing.

D. Manufacturer's Installation Instructions: Indicate application conditions and limitations of use stipulated by product testing agency. Include instructions for storage, handling, protection, examination, preparation, installation, and starting of product.

E. Manufacturer's Certificate: Certify that products meet or exceed specified requirements.

F. Manufacturer's Field Reports: Indicate procedures and findings.

1.04 OPERATION AND MAINTENANCE DATA

A. Provide three (3) bound hard (paper) copies.

B. Operation Data: Include instructions for normal operation.

C. Maintenance Data: Include instructions for routine maintenance requirements, service manuals for engine, oil sampling and analysis for engine wear, and emergency maintenance procedures.

D. Maintain one (1) copy of document on site.

1.05 QUALITY ASSURANCE

Beaufort County 800 MHz Building Beaufort County Facilities Beaufort, SC 03.22.2019

A. Conform to requirements of NFPA 70 and NFPA 110.

B. Manufacturer Qualifications: Company specializing in manufacturing the products specified in this section with minimum three years documented experience with service facilities within 150 miles of Project.

C. Supplier Qualifications: Authorized distributor of specified manufacturer with minimum three years documented experience.

D. Products: Furnish products listed and classified by Underwriters Laboratories as suitable for purpose specified and indicated.

1.06 DELIVERY, STORAGE, AND HANDLING

A. Accept unit on site on skids. Inspect for damage.

B. Protect equipment from dirt and moisture by securely wrapping in heavy plastic.

1.07 MAINTENANCE SERVICE

A. Furnish service and maintenance of engine generator for three years from Date of

Substantial Completion. Service to be provided through generator manufacturer’s standard PM contract.

1.08 MAINTENANCE MATERIALS

A. Furnish one set of any specialized tools required for preventative maintenance of the engine generator system. Package tools in adequately sized metal tool box.

Specialized tools do not include standard open-end wrenches or sockets but tools specifically required to perform work on the engine generator.

1.09 EXTRA MATERIALS

A. Provide two of each fuel, oil and air filter element to the owner.

PART 2 - PRODUCTS

2.01 MANUFACTURERS

A. Caterpillar Inc B. Cummins Engine Company C. Generac Co.

2.02 PACKAGED ENGINE GENERATOR SYSTEM

A. Description: Engine generator system to provide a source of standby power in accordance with NFPA 110 B. Minimum System Capacity: 100 kW, 125 kVA at elevation of 0 feet above sea level, standby rating using engine-mounted radiator.

C. Engine generator set shall provide back-up power for the facility during utility power outage. Power outage sensing, generator starting, transfer of load, re-transfer to normal power and engine cool-down running time shall be completely automated and shall not require attended operation.

2.03 ENGINE

A. Type: Water-cooled inline or V-type, four stroke cycle compression ignition Diesel internal combustion engine.

B. Rating: Sufficient to operate under 10 percent overload for one hour in an ambient of 105 degrees F at elevation of 0 feet.

C. Fuel System: No. 2 diesel fuel oil

D. Engine speed: Shall not exceed 1800 rpm.

E. Governor: Isochronous type to maintain engine speed within 0.5 percent, steady state, and 5 percent, no load to full load, with recovery to steady state within 2 seconds following sudden load changes.

F. Safety Devices: Engine shutdown on high water temperature, low oil pressure, overspeed, and engine overcrank. Limits as selected by manufacturer.

G. Engine Starting: DC starting system with positive engagement, number and voltage of starter motors in accordance with manufacturer's instructions. Include remote starting control circuit, with MANUAL-OFF-REMOTE selector switch on engine-generator control panel.

H. Engine Jacket Heater: Thermal circulation type water heater with integral thermostatic control, sized to maintain engine jacket water at 90 degrees F and suitable for operation on 120 volts AC. Heater shall be disconnected while the engine is in operation.

I. Radiator: Provide a closed recovery cooling system with sufficient capacity to cool the engine when the generator set is delivering full rated load at a minimum ambient temperature of 110 degrees F. Radiator, fan, engine driven centrifugal water pump and thermostatic valve shall be provided and the system protected against freezing and corrosion. Radiator air flow restriction 0.5 inches of water (1.25 Pa) maximum.

J. Engine Accessories: Fuel filter, lube oil filter, intake air filter, lube oil cooler, fuel priming pump, and gear-driven water pump at a minimum. Include fuel pressure gage, water temperature gage, and lube oil pressure gage on engine/generator control panel.

K. Mounting: Provide unit with suitable spring-type vibration isolators and mount on structural steel base. Anchor bolts and vibration isolators shall be used to mount the generator steel base to the wood sub-floor of the building. Vibration isolators shall be one piece units, resistant to corrosion and environmental degradation and be rated for use in a seismic zone.

2.04 GENERATOR

A. Generator: NEMA MG 1, three phase, four wire, reconnectable brushless synchronous generator with brushless exciter.

B. Rating: 100 kW, 125 kVA, at 0.8 power factor, 208Y-120 volts, 60 Hz at 1800 rpm.

Overload capacity of 10% for two (2) hours out of any twenty-four (24) hour period.

C. Insulation Class: F.

D. Temperature Rise: 125 degrees C Standby.

E. Enclosure: NEMA MG 1, open drip proof.

F. Voltage Regulation: Include generator-mounted volts per hertz exciter-regulator to match engine and generator characteristics, with voltage regulation plus or minus 1 percent from no load to full load. Include manual controls to adjust voltage droop, voltage level (plus or minus 5 percent) and voltage gain.

G. Engine generator excitation shall be by permanent magnet (PMG).

H. Engine generator and all associated accessories and components shall be rated for use in seismic zone.

2.05 ACCESSORIES

A. Batteries: Heavy duty, diesel starting type lead-acid storage batteries capable of four 15 second cranks followed by a 15 second rest period at 0 degrees F. Match battery voltage to starting system. Include necessary cables and clamps.

B. Battery Tray: Treated for electrolyte resistance, constructed to contain spillage.

C. Battery Charger: Current limiting type designed to float at 2.17 volts per cell and equalize at 2.33 volts per cell. Include overload protection, full wave rectifier, DC voltmeter and ammeter, and 120 volts AC fused input. Charger shall be capable of recharging a completely discharged battery in a maximum of 8 hours. Provide wall-mounted enclosure to meet NEMA 250, Type 1 requirements.

D. Line Circuit Breaker: One (1) 400A Molded case circuit breaker with integral thermal and instantaneous magnetic trip in each pole on generator output, sized in accordance with NFPA 70; UL listed. Unit mount in enclosure to meet NEMA 250, Type 1 requirements.

E. Engine-Generator Control Panel: NEMA 250, Type 1 generator mounted control panel enclosure with engine and generator controls and indicators. Include provision for padlock and the following equipment and features:

1. Frequency Meter: 45-65 Hz. range

2. AC Output Voltmeter: 2 percent accuracy, with phase selector switch.

3. AC Output Ammeter: 2 percent accuracy, with phase selector switch.

4. Output voltage adjustment.

5. Push-to-test indicator lamps, one each for low oil pressure, high water temperature, overspeed, and overcrank.

6. Engine start/stop selector switch.

7. Engine running time meter.

8. Oil pressure gage.

9. Water temperature gage.

10. Auxiliary Relay: 3PDT, operates when engine runs, with contact terminals prewired to terminal strip.

11. Additional visual indicators and alarms as required by NFPA 110.

12. Remote Alarm Contacts: Pre-wire SPDT contacts to terminal strip for remote alarm functions required by NFPA 110.

F. Provide generator monitoring device that allows remote monitoring of the generator parameters via the internet for offsite monitoring of generator parameters.

G. Weather-Protective Enclosure: Reinforced powder painted aluminum housing allowing access to control panel and service points, with lockable doors and panels.

Include fixed louvers and battery rack. Enclosure shall completely cover engine generator and sub-base fuel tank and protect from the elements. Enclosure shall be permanently bolted to the concrete pad or structural steel skid of the engine generator as determined to be the manufacturer’s standard mounting practice.

Enclosure shall have 180 mph wind rating.

H. Skid-Mounted sub-base Fuel Tank: Tank shall have a 72-hour full load run time and be a welded dual wall steel tank with fill and vent located on top of tank. The unit and associated components shall have the structural integrity to support the generator set and be seismically rated. It shall include, but not be limited to the following: heavy gauge steel double wall tank with all welded construction, prime coated and finished painted outside, secondary containment of fuel tank, lockable fuel filler cap, low fuel level alarm switch, fuel level gauge, inter-tank leak detection alarm switch, fuel line check valve, tank drain, threaded pipe connections and all other accessories required for proper operation.

PART 3 - EXECUTION

3.01 INSTALLATION

A. Install in accordance with manufacturer's instructions.

B. Install securely, in a neat and workmanlike manner, as specified in NECA/EGSA

404. System shall be installed to meet all seismic restraint requirements of the International Building Code (IBC) and the state of South Carolina. Provide mounting devices, hardware, bracing, fittings, etc. to meet these requirements.

3.02 FIELD QUALITY CONTROL

A. Perform inspections and tests listed in NETA ATS, except Section 4.

3.03 MANUFACTURER'S FIELD SERVICES

A. Provide the services of the manufacturer's representative to prepare and start system.

3.04 ADJUSTING

A. Adjust all operating mechanisms for free mechanical movement.

B. Adjust all control parameters and settings to values as recommended by the manufacturer and as instructed by the Architect/Engineer.

C. Adjust generator output voltage and engine speed.

3.05 TESTING AND DEMONSTRATION

A. Provide full load test utilizing portable test bank for four hours minimum. Simulate power failure including operation of transfer switch, automatic starting cycle, and automatic shutdown and return to normal. The load bank test shall be structured as follows:

1. (1) hour at 50% load

2. (1) hour at 75% load

3. (2) hour at 100% load

B. Record in 20 minute intervals during four hour test:

1. Kilowatts.

2. Amperes.

3. Voltage.

4. Coolant temperature.

5. Room temperature.

6. Frequency.

7. Oil pressure.

C. Test alarm and shutdown circuits by simulating conditions.

D. Building Load Test: Following the load bank test, start the building load test.

Simulate power outage, including operation of the transfer switch, automatic starting cycle, and automatic shut-down and return to normal by interrupting normal source, and demonstrate that the system operates with the actual building loads to provide standby power. Test all alarm and shutdown circuits by simulating conditions. Test duration shall be a minimum of two (2) hours.

3.06 TRAINING

Prior to final acceptance, the manufacturer’s authorized representative shall provide comprehensive training and thoroughly and competently instruct the Owner’s designated personnel in proper orientation of the system and in all required periodic maintenance. Training shall include, but no be limited to, operation (all aspects including normal and emergency modes), maintenance and troubleshooting of the equipment. A minimum of two (2) hours of on-site time, in addition to load bank testing, shall be allocated for this purpose.

3.07 DOCUMENTATION

Upon final completion of the system, a documentation package shall be provided and shall include three (3) bound (in three ring binders with index tabs) copies of complete manufacturer’s operation and instruction manuals. Provide one bound original (no photocopies) and two additional bound copies (photocopies are acceptable) of the total documentation package. The manuals shall include operation and maintenance procedures, complete parts lists, dimensional drawings, unit wiring diagrams and schematics, and interconnection wiring drawings. Include instructions for routine maintenance requirements, service manuals for engine and day tank, oil sampling and analysis for engine wear, and emergency maintenance procedures. The following shall also be provided:

A. System record drawings.

B. Instruction manuals as supplied by the manufacturer for all components and electronics.

C. Product specification sheets for all equipment without instruction manuals.

3.08 CLEANING

A. Clean engine and generator surfaces. Replace oil and fuel filters.

B. Touch up scratched or marred surfaces to match original finishes.

3.09 WARRANTY

The Contractor shall provide the following minimum manufacturers factory warranty for each engine-generator set and associated equipment:

A. All equipment shall be new and warranted free of faulty workmanship and damage.

B. The warranty shall include all parts, labor (including travel with no travel time or distance limitations), expenses and equipment necessary to perform replacement and/or repairs.

C. The total system (parts and labor) shall be warranted free of defects for a period of five (5) years (with no run time limitation) from date of final acceptance.

D. Replacement of defective materials and repair of faulty workmanship shall take place within 48 hours of notification by Owner and shall be guaranteed at no cost to the Owner during the warranty period.

E. The minimum warranty provisions specified above shall not diminish the terms of individual equipment manufacturer’s warranties.

F. The printed warranty shall be included in the contract documents.

3.10 FINAL ACCEPTANCE

The installation shall be supervised, checked and tested by a qualified representative of the engine-generator set manufacturer. Written certification, by the qualified manufacturer’s representative, verifying manufacturer’s startup procedures were followed and full system functionality was achieved shall be submitted to the Architect and Owner prior to the final acceptance.

END OF SECTION