DOCUMENT 00 90 01 ADDENDUM #1 - carsonplumbingut.com...standards and ANSI/AWWA e101-88. 1. Performance data curves (adjusted for operating speed) showing head, capacity, horsepower

CRS Engineers PN 2019-0165 Millville City

June 2021 170 South Well House

Addendum #1

00 90 01 Page 1 of 2

DOCUMENT 00 90 01

ADDENDUM #1

Project: 2019-0165

Date: Monday, July 12, 2021

Bid Date: Thursday, July 22, 2021

Bid Time: 2:00 p.m.

This addendum shall be considered part of the Contract Document for the above referenced project as

though it had been issued at the same time and shall be incorporated integrally therewith. Where provisions

of the following supplementary data differ from those of the original Contract Documents, this Addendum

shall govern and take precedence. Receipt of this addendum shall be acknowledged in Document 00 41

00 – Bid Form.

Table of Contents

Project Manual ............................................................................................................................................................. 2

Section 00 10 00 – Advertisement For Bids .................................................................................................. 2

Section 22 11 23 – Vertical Turbine Pump, Motor, and Appurtenances .................................................. 2

Section 26 29 23 – Variable Frequency Drives ............................................................................................ 2

Section 26 32 13 – Engine Generators ......................................................................................................... 2



Addendum #1

00 90 01 Page 2 of 2

Project Manual

Section 00 10 00 – Advertisement For Bids

Change the wording in the Pre-bid Conference section to say the following:

A non-mandatory pre-bid conference for the project will be held on Thursday, July 15 13, at

2:00pm at Millville City Offices,510 East 300 South, Millville, Utah 84326.

Section 22 11 23 – Vertical Turbine Pump, Motor, and Appurtenances

Add the following pump model in section 1.1:

- Simflo SL12H (4 stage)

Section 26 29 23 – Variable Frequency Drives

Change section 2.1, A, to read the following.

1. Square D.

2. Allen Bradley.

3. Mitsubishi.

4. Toshiba.

5. Eaton

6. Approved equal

1. Danfoss Drives & Approved Equals

Section 26 32 13 – Engine Generators

Change section 2.1 to read the following.

1. Caterpillar; Engine Div.

2. Generac Power Systems, Inc.

3. Kohler Power Systems.

1. Onan/Cummins Power Generation; Industrial Business Group

Attachments:

1. Section 00 10 00 Advertisement for Bids

2. Section 22 11 23 Vertical Turbine Pump, Motor, and Appurtenances

a. Pump Curve

3. Section 22 29 23 Variable Frequency Drives

4. Section 26 32 13 Engine Generators

END OF ADDENDUM

EJCDC® C-111, Advertisement for Bids for Construction Contract. Copyright© 2018 National Society of Professional Engineers, American Council of Engineering Companies,

and American Society of Civil Engineers. All rights reserved.

Modified to include RD edits from RUS Bulletin 1780-26 (6/16/2020).

Page 1 of 2

ADVERTISEMENT FOR BIDS

MILLVILLE CITY

MILLVILLE UTAH

MILLVILLE WELL HOUSE

GENERAL NOTICE

Millville City is requesting Bids for the construction of the following Project:

170 South Well House-

Bids for the construction of the Project will be received via email at [email protected] until

Friday, July 22, at 2:00 pm local time. At that time, the Bids received will be publicly opened and read via a

virtual meeting. A link to this meeting will be sent to all bidders.

The Project includes the following work:

construction of well house, piping, and all other appurtenances required to supply water from this source

into the system.

OBTAINING THE BIDDING DOCUMENTS

The Issuing Office for the Bidding Documents is:

CRS Engineers

4246 S. Riverboat Rd, Ste 200

Salt Lake City, UT 84123

Prospective Bidders may obtain or examine the Bidding Documents at the Issuing Office on Monday

through Friday between the hours of 8:00 am to 5:00 pm and may obtain copies of the Bidding Documents

from the Issuing Office as described below. Partial sets of Bidding Documents will not be available from the

Issuing Office. Neither Owner nor Engineer will be responsible for full or partial sets of Bidding Documents,

including addenda, if any, obtained from sources other than the Issuing Office.

Bidding documents may also be received by requesting them from [email protected] via

email.

PRE-BID CONFERENCE

A non-mandatory pre-bid conference for the Project will be held on Thursday, July 15 13, at 2:00 pm at

Millville City Offices, 510 East 300 South, Millville, Utah, 84326. Attendance at the pre-bid conference is not

mandatory but highly recommended. A site visit will follow the pre-bid conference. If bidder does not

attend, we encourage bidder to conduct their own site visit during normal business hours.

INSTRUCTIONS TO BIDDERS

For all further requirements regarding bid submittal, qualifications, procedures, and contract award, refer to

the Instructions to Bidders that are included in the Bidding Documents.

AMERICAN IRON AND STEEL

Section 746 of Title VII of the Consolidated Appropriations Act of 2017 (Division A - Agriculture, Rural

Development, Food and Drug Administration, and Related Agencies Appropriations Act, 2017) and

subsequent statutes mandating domestic preference applies an American Iron and Steel requirement to

this project. All iron and steel products used in this project must be produced in the United States. The term

mailto:[email protected]

mailto:[email protected]

EJCDC® C-111, Advertisement for Bids for Construction Contract. Copyright© 2018 National Society of Professional Engineers, American Council of Engineering Companies,

and American Society of Civil Engineers. All rights reserved.

Modified to include RD edits from RUS Bulletin 1780-26 (6/16/2020).

Page 2 of 2

“iron and steel products” means the following products made primarily of iron or steel: lined or unlined

pipes and fittings, manhole covers and other municipal castings, hydrants, tanks, flanges, pipe clamps and

restraints, valves, structural steel, reinforced precast concrete, and Construction Materials.

The following waivers apply to this Contract:

De Minimis,

Minor Components, and

Pig iron and direct reduced iron.

This Advertisement is issued by:

Owner: Millville City

By: Mark Chandler

Title: Professional Engineer Project Manager

Date: July 1, 2021



Vertical Turbine Pump, Motor, and Appurtenances

22 11 23 Page 1 of 4

SECTION 22 11 23

VERTICAL TURBINE PUMP, MOTOR, AND APPURTENANCES

PART 1 - GENERAL

1.1 DESCRIPTION

A. Scope. Furnish and deliver an oil lubricated surface discharge deep well turbine pump, Simflo

SL12h (4 stage), for installation in an existing well casing of 16 inches outside diameter 480-foot

depth.

B. Submittals. Shop drawings shall be submitted in accordance with section 01 00 00 and shall

include descriptive information as required to fully describe the pump, controls (if required),

and overall operating performance. The shop drawings shall clearly state any deviations from

the specified requirements. The following shall also be furnished with the shop drawings.

Performance requirements specified hereinafter shall be defined in the hydraulic institute

standards and ANSI/AWWA e101-88.

1. Performance data curves (adjusted for operating speed) showing head, capacity,

horsepower demand, and pump efficiency over the entire operating range of the

pump, from shutoff to maximum capacity. The equipment manufactured shall

indicate separately the head, capacity, horsepower demand, overall efficiency, and

minimum submergence required at the specified design point.

2. Equipment manufactured shall provide complete and detailed information regarding

the installation of the pumps. Any installation requirements or operating conditions

which the supplier or manufacturer feels to be critical to the safe and reliable

operation of the pumps should be identified and described in detail.

3. Operating and maintenance manuals and maintenance summary sheets for the

equipment specified herein shall be furnished as specified in section 01 00 00.

1.2 DESIGN CRITERIA

A. General. Pumps shall be capable of continuous operation while pumping untreated

groundwater. The pump bowl and discharge head shall be nsf61, annex g, certified.

B. Operating capacity

Pump Setting Depth 480 feet

Maximum Capacity 800 gpm

Typical Operating Capacity 600 gpm

Total Dynamic Head 190 feet

Nominal Operating Speed 1,770 rpm

Minimum Efficiency 75%

Minimum Motor Horsepower 50

Column Size 8”

Tube Size 3”




22 11 23 Page 2 of 4

Shaft Size 1-1/4”

C. The pump and motor shall be capable of operating within specified parameters without

permanent damage.

D. The pump and motor shall be controlled by a variable frequency drive (VFD). The pump and

motor shall be selected to operate between the maximum and low-end capacities listed

above when controlled by a VFD as specified in section 26 29 23.

PART 2 - PRODUCTS

2.1 PUMP BOWL ASSEMBLY

A. General. The pump bowls shall be of close grained, cast iron ASTM a48 class 30. The water

passages on bowl sizes 4” through 20” shall be lined with porcelain enamel and larger sizes

shall be Heresite or fusion epoxy-lined to reduce friction losses; shall be free of blow holes, sand

holes and other detrimental defects, and shall be accurately machined and fitted. The

impellers shall be of bronze ASTM b584c87600 no-lead bronze or 416 stainless steel and

statically and dynamically balanced. Impellers shall be securely fastened to the shaft with

taper split bushings of steel. Impellers shall be adjusted vertically by an external means.

B. The pump shaft shall be of a276gr416 stainless steel, turned, ground and polished. It shall be

supported by bronze bearings of ASTM b505c84400 above and below each impeller. The

suction case bearing shall be grease lubricated and protected by bronze sand collar of ASTM

b505c84400. The size of the shaft shall be no less than that determined by ANSI/AWWA

Specifications E101, Section A4.3 Paragraph 4.3.3.

C. The discharge case shall also be fitted with a bronze ASTM b505c84400 tube adapter bearing

of proper size to connect to the shaft enclosing tube. Also, the discharge case shall be fitted

with a cast iron ASTM a48 class 30 column adapter of the proper size to connect to the column

selected.

D. The pump exterior shall be coated with 10-12 mils, DFT of, NSF 61, potable epoxy paint. And,

shall be nsf-61, annex g, certified.

2.2 DISCHARGE HEAD

A. General. The discharge head shall be close fabricated steel grained, free of defects,

accurately machined and with a surface discharge. Discharge flange shall be machined and

drilled to ANSI standards for 150# rating and shall be 12 inches nominal inside diameter equal

to the driver base diameter (bd) and no less than 16-1/2 inches.

B. A tension plate and tension nut assembly shall be installed in the discharge head to allow

proper tension to be placed on the shaft enclosing tube. The tension plate nut shall be of cast

iron with O-ring at the bottom end to provide the seal. The tension nut/bearing shall be made

of silicon bronze to maintain tube tension and support for the head shaft. After proper

tensioning, the tension nut shall be locked into position by a steel capscrew.

C. The head shaft shall be of ASTM a276gr416 stainless steel which shall not exceed 10’ in length.

Impeller adjustment shall be provided at the top of the head shaft by means of a steel

adjusting nut, which shall be positively locked in position.

D. The existing well casing shall be fitted with a steel sole plate designed to support the weight of

pump and motor assembly. The bolt holes shall be tapped into the sole plate and capped on

the bottom side to prevent concrete intrusion. A RTV silicone gasket and cadmium plate bolts

shall be used to seal the discharge head to the sole plate.




22 11 23 Page 3 of 4

E. For artesian type wells the base discharge head to sole plate bolt pattern shall be 125#

flanged type. For non-artesian type wells a manufactures standard may be used.

F. The discharge head interior shall be coated with 10-12 mils, DFT of, NSF 61, potable epoxy

paint. And, shall be nsf-61, annex g, certified.

2.3 COLUMN ASSEMBLY

A. The line shafts shall be of carbon steel ASTM a108 grade c1045, turned and ground. They shall

be furnished in interchangeable section not over 20 feet in length, and shall be coupled with

threaded steel couplings machined from solid steel bar. It shall have left-hand threads to

tighten during pump operation. The diameter of the shaft and coupling shall be designed in

according with AWWA E101 Standard and meet the minimum sizing in Part 1.

B. The butting faces shall be machined square to the axis of the shaft, with maximum permissible

axial misalignment of the thread axis with the shaft axis 0.002” in 6”. The size of the shaft shall be

no less than that determined by ANSI/AWWA-e101 specifications, section 5.5 for c1045 line

shaft and shall be such that elongation due to hydraulic thrust will not exceed the axial

clearance of the impellers in the pump bowls. Maximum run out in 10’ shall not exceed .005”.

C. Enclosing Tube: The enclosing tube shall be made of ASTM A120 schedule 80 pipe in

interchangeable section not more than 5 ft. in length. The top special section shall be

designed for applying proper tension to the tube. Both ends of each tube length shall be

bored, faced, and inside threaded with left hand threads. The ends of the tube shall be square

with the axis and shall butt to ensure accurate alignment. The tube shall be of such overall

assembled length to properly match the length of the discharge column. The enclosing tube

shall be stabilized in the column pipe by rubber centering spider spaced 20 feet from the top

and bottom, and 40 feet intervals throughout the balance of the column length.

D. The outer column pipe shall be of ASTM a53grb steel pipe in interchangeable sections not over

10 feet in length and with the ends of each section faced parallel and machined with 8

straight threads per inch permitting the ends to butt and insuring alignment when connected

by standard mill steel couplings. The weight of the column pipe shall be no less than that

stated in ANSI specification e101, section 5.1 “standard specifications for discharge column

pipe.”

E. The column, tube and shaft sizes shall be as indicated in section 1.2 design criteria.

2.4 MOTOR AND VARIABLE FREQUENCY DRIVE

A. General. The electric motor shall be vertical hollow shaft 1800 rpm, 3 phase 60 hertz 480 volts

with non-reversing ratchet coupling, p base, squirrel cage induction design. Enclosure shall

meet NEMA weather protected type 1 design with stainless steel screens to prevent entrance

of rodents. Motor shall have class f or class h insulation with temperature rise as specified by

NEMA standards for class of insulation used and shall have a 1.15 service factor. The motor shall

be of premium efficiency, inverter duty, equal to that of us electric type HUSI.

B. Thrust bearing shall be chosen to handle the continuous down thrust as specified by the pump

manufacturer with an AFBMA b-10 50,000-hour minimum life at 110% design head conditions.

Provisions shall be made for momentary up thrust equal to 30% of rated down thrust.

C. The motor shall be equipped with an aegis SGR shaft grounding system. It shall include, as a

minimum, an upper bearing shield, and a lower shaft grounding ring.

D. The motor rating shall be such that at design it will not be loaded beyond nameplate rating

and at no place on the pump curve shall the loading exceed the service factor.




22 11 23 Page 4 of 4

2.5 SOUNDER TUBE

A. General. A PVC sounder tube shall be installed with the column. The sounder tube shall be a

minimum of 1.25" schedule 80 flush thread PVC pipe. Threads shall conform to ASTM f480. The

sounder tube shall extend from the top of the pump assembly to the surface. The bottom of

the sounder tube shall be capped. The bottom 10 feet of the sounder tube shall be slotted.

Slots shall be .020” and conform to ASTM f-480. The sounder tube shall be strapped to the

discharge column with stainless steel bands.

2.6 WATER LEVEL INDICATOR ASSEMBLY

A. The water level indicator shall be a Keller America Microlevel Trasducer, 4-20mA, with a trident

display or equal. The transducer unit shall be mounted through the pump discharge head with

a sounder tube terminating at the top of the bowl assembly.

PART 3 - EXECUTION

3.1 INSTALLATION

A. The installation shall be in accordance with manufacturers written recommendations. The

installation shall be as shown in the drawings.

3.2 PAINTING

A. Shop and field painting shall be specified by owner.

3.3 FUNCTIONAL TEST

A. Prior to owner acceptance and formal pump station start-up, all equipment shall be inspected

for proper alignment, quiet operation, proper connection, and satisfactory performance by

means of a function test. A start up report showing function testing, motor voltages, running

amperages and well water levels shall be provided to the engineer after pump station start-up.

3.4 SUPPLIER

A. The supplier of the well pump, motor and appurtenances shall have been in business for not

less than 10 years. The primary function of the supplier shall be water well pumps and motors.

This supplier shall have sole responsibility for all materials contained within this specification

section.

B. Recommended manufacturers are: Flowserve pump co, Floway and American Marsh or

preapproved equal. Any alternate manufacturers must be NSF 61, annex g, certified.

Certifications must be provided, to engineer, 14 days prior to bid, for approval.

END OF SECTION

Hea

d - f

t

150014001300120011001000900800700600

50

500

100

400

150

300

200

200

250

100

300

0

1770 rpm

1700 rpm

1650 rpm

1600 rpm

1550 rpm

59

59

68

68

74

74

74

74

77

77

77

7779

79

79

7981

81

81

81

82

82

82

82

83

83

83

83

84.9

84.9

NPS

Hr -

ft

150014001300120011001000900800700600500400300200

10

100

20

0

30

Pow

er -

hp

US gpm150014001300120011001000900800700600500400300200100

50

0

100

Discharge size also available in 8in or 10in.

Size: SL12H (4 stage)Speed: 1550 - 1770 rpm

7/6/2021 Dia: 8.8 in

Impeller: SL12H



Variable Frequency Drives

26 29 23 Page 1 of 10

SECTION 26 29 23

VARIABLE FREQUENCY DRIVES

PART 1 — GENERAL

1.1 SUMMARY

A. Section includes variable frequency controllers.

1.2 RELATED SECTIONS

A. Section 26 05 00 - Common Work Results for Electrical

B. Section 26 05 19 - Low-voltage Electrical Power Conductors and Cables

C. Section 26 05 33 - Raceways and Boxes

D. Section 26 24 19 - Motor Control Centers

1.3 REFERENCES

A. IEEE C62.41 (Institute of Electrical and Electronics Engineers) - Recommended Practice on Surge

Voltages in Low-Voltage AC Power Circuits.

B. NEMA FU 1 (National Electrical Manufacturers Association) - Fuses.

C. NEMA ICS 3.1 (National Electrical Manufacturers Association) - Safety Standards for Construction

and Guide for Selection, Installation and Operation of Adjustable-Speed Drive Systems.

D. NEMA ICS 7 (National Electrical Manufacturers Association) - Industrial Control and Systems:

Adjustable Speed Drives.

E. NEMA 250 (National Electrical Manufacturers Association) - Enclosures for Electrical Equipment

(1000 Volts Maximum).

F. NETA ATS (International Electrical Testing Association) - Acceptance Testing Specifications for

Electrical Power Distribution Equipment and Systems.

1.4 SUBMITTALS

A. Section 01 33 00 - Submittal procedures.

B. Shop Drawings: Indicate front and side views of enclosures with overall dimensions and weights

shown; conduit entrance locations and requirements; and nameplate legends.

C. Product Data: Submit catalog sheets showing voltage, controller size, ratings and size of switching

and overcurrent protective devices, short circuit ratings dimensions, and enclosure details.

D. Test Reports: Indicate field test and inspection procedures and test results including a harmonic test

that will demonstrate compliance with IEEE 519.

E. Manufacturer’s Field Reports: Indicate start-up inspection findings.

1.5 SUBMITTED AT SHIPMENT

A. Include system manuals, complete with wiring diagrams, schematics, operating, and maintenance

instructions, shall be provided with the VFD and VFD systems at the time of shipment, on both hard




26 29 23 Page 2 of 10

and digital copies.

1.6 CLOSEOUT SUBMITTALS

A. Section 01 70 00 - Contract Closeout: Closeout procedures.

B. Operation and Maintenance Data: Submit instructions complying with NEMA ICS 3.1. Include

procedures for starting and operating controllers, and describe operating limits that may result in

hazardous or unsafe conditions. Include routing preventive maintenance schedule.

1.7 QUALIFICATIONS

A. Manufacturer: Company specializing in manufacturing products specified in this section with

minimum three years experience and service facilities within 100 miles of the project.

1.8 SUPPLIER

A. VFD supply and coordination to be done with Glenn’s Electric and Rockwell Supply.

1.9 STANDARDS

A. The VFD shall be UL listed and not require external fuses except where input power is supplied from

multiple transformer secondaries.

B. All VFD and VFD systems shall be designed in accordance with applicable portions of NEMA

standards, and panel build ups manufactured by a UL508 listed manufacturer.

C. The VFD shall be compatible with the installation requirements of interpretive codes such as

National Electric Code (NEC) and Occupational Safety & Health Act (OSHA).

D. The VFD shall be capable of operating in compliance with IEEE 519-1992.

E. The VFD shall meet IEC 61200-2 for vibration levels.

1.10 DELIVERY, STORAGE, AND HANDLING

A. Section 01 65 00 - Product Delivery and Handling

B. Store in a clean, dry space. Maintain factory wrapping or provide an additional heavy canvas or

heavy plastic cover to protect units from dirt, water, construction debris, and traffic.

C. Handle in accordance with manufacturer's written instructions. Lift only with lugs provided for the

purpose. Handle carefully to avoid damage to components, enclosure, and finish.

1.11 ENVIRONMENTAL REQUIREMENTS

A. Section 01 65 00 - Product Delivery and Handling.

B. Conform to NEMA ICS 7 service conditions during and after installation of variable frequency

controllers.

1.12 MAINTENANCE SERVICE

A. Provide service and maintenance of variable frequency controller for one year from Date of

Substantial Completion.

1.13 MAINTENANCE MATERIALS




26 29 23 Page 3 of 10

A. Section 01 78 39 - Operational and Maintenance Data.

B. Supply two of each air filter.

C. Provide three of each fuse size and type

PART 2 — PRODUCTS

2.1 VARIABLE FREQUENCY CONTROLLER

A. Manufacturers:

1. Square D.

2. Allen Bradley.

3. Mitsubishi.

4. Toshiba.

5. Eaton

6. Approved equal

1. Danfoss Drives

B. Product Description: NEMA ICS 7, enclosed 6 pulse variable frequency controller suitable for

operating the indicated loads. Select unspecified features and options in accordance with NEMA

ICS 3.1.

2.2 RATINGS

A. Rated Input Voltage: 480 Volts, three phase, 60 Hertz. The VFD shall be able to withstand voltage

variations of -15% to +10% without tripping or affecting VFD performance.

B. Motor Nameplate Voltage: 460 Volts, three phase 60 Hertz.

C. Motor Nameplate Horsepower:

1. 700 Horsepower, Design B - Well.

D. Displacement Power Factor: Between 1.0 and 0.95 lagging over entire range of operating speed

and load.

E. Operating Ambient: -10 degrees C to 50 degrees C (14 degrees F to 122 degrees F).

F. Relative Humidity: 5 to 95 percent non-condensing.

G. Minimum Efficiency at Full Load: 96 percent at half speed, 98% at full speed.

H. Elevation: The VFD shall be suitable for operations up to 4600 feet, higher by derating.

I. Starting Torque: 100% starting torque shall be available from 0.5 Hz. To 60 Hz.

J. Overload Capability: 110% of rated FLA. (full load amps) for 60 seconds; 180% of rated FLA,

instantaneously.

K. Radio Frequency Interference (RFI): The VFD must meet the requirements for Radio Frequency

Interference (RFI) above 7 MHz as specified by FCC regulations, part 15, subpart J, Class A devices.

L. In compliance with IEEE 519-1992, the Total Harmonic Voltage Distortion for the VFD shall be no

greater than 3%. And the harmonic current distortion shall be no greater then 8%. Compliance




26 29 23 Page 4 of 10

with these requirements shall be shown by a vendor provided harmonics test. The point of common

coupling for the purpose of the test shall be the input terminals to the VFD system. Units which fail

to meet the above limits will be removed and replaced at the VFD vendors expense.

2.3 DESIGN FEATURES

A. Employ microprocessor-based inverter logic isolated from power circuits.

B. VFD shall include surface mounted technology, with conformal coating.

C. Employ pulse-width-modulated inverter system.

D. Design for ability to operate controller with motor disconnected from output.

E. Design to attempt five automatic restarts following fault condition before locking out and requiring

manual restart.

F. The VFD shall be capable of 4 different acceleration and different deceleration rates, each rate

independently adjustable from 0.01 to 3600 seconds. Selectable accel/decel patterns to include

linear, S-curve, and non-linear for variable torque loads.

G. The VFD shall have the capability of determining motor characteristics to optimize its operation

with the use of pre-programmed motor data information or self-tuning operation. Self tuning is to

be available with or without the motor coupled to the load. Tuning shall also include an online

mode that automatically and dynamically compensates the VFD regulator for changes in motor

temperature.

2.4 INDICATORS AND MANUAL CONTROLS

A. Input Signal: 4 - 20 mA DC.

B. Display:

1. Provide integral LCD display to indicate output voltage, output frequency, output current,

fault codes and drive status.

2. Upon a fault condition, the LCD shall display VFD output current, voltage, frequency,

torque, DC link voltage, operating hours, I/O terminal status, and temperature at the time

of fault. The last four (4) faults will be stored in memory and selectively be displayed on the

LCD.

C. Indicator Lights:

1. Provide an indicator light to indicate VFD failure.

2. ON Indication Light

3. OFF Indication Light

D. The drive shall have a built-in keypad that shall include Forward/Reverse/Stop/Jog keys, Drive reset

key and Reference increment/decrement keys.

E. Volts Per Hertz Adjustment: Plus or minus 10 percent.

F. Current Limit Adjustment: 60 - 110 percent of rated.

G. Acceleration Rate Adjustment: 0.5 - 30 seconds.

H. Deceleration Rate Adjustment: 1 - 30 seconds.




26 29 23 Page 5 of 10

I. HAND-OFF-AUTOMATIC selector switch and manual speed control.

J. Control Power Source: Integral control transformer.

2.5 SAFETIES AND INTERLOCKS

A. Includes undervoltage release.

B. Door Interlocks: Mechanical means to prevent opening of equipment with power connected, or to

disconnect power if door is opened; include means for defeating interlock by qualified persons.

C. Safety Interlocks: Terminals for remote contact to inhibit starting under both manual and automatic

mode.

D. Control Interlocks: Furnish terminals for remote contact to allow starting in automatic mode.

E. The VFD shall be able to automatically reset up to ten (10) times after over-current, over-voltage,

overheating, and overload faults. Reset attempts and reset intervals must be programmable.

F. Disconnecting Means: Integral circuit breaker on the line side of each controller.

2.6 VFD INPUT/OUTPUT PARAMETERS

A. The VFD shall accept and follow a selectable external frequency reference of either analog 0-5

VDC, 0-10 VDC, 4-20mA with signal inversion.

B. The VFD shall maintain the output frequency to within 0.2% of reference when the reference is

analog, and to within .01% of reference when the reference is digital (Speed level inputs from

keypad, contact closure, digital interface, or serial communication).

C. The VFD shall have a reference filter to reduce noise in the analog signals and a low noise control

power supply system .

D. The VFD shall accept inputs from external dry contacts for the following functions:

1. Run forward command

2. Run reverse command

3. Multi-step frequency selection

4. Acceleration/Deceleration time selection

5. Stop command

6. Coast to stop command

7. Alarm reset

8. Trip command (external fault)

9. Jogging operation

10. Frequency reference selection (2)

11. DC brake command

12. Torque limits (2)

13. Switching operation between line and inverter (50 and 60 Hz)

14. Speed Increase command

15. Speed Decrease command

16. Write enable for keypad

17. PID control cancel

18. Inverse mode changeover

19. Interlock signal

20. Serial communications enable

21. Universal DI

22. Pick up start mode




26 29 23 Page 6 of 10

23. Forced stop command

24. Forced stop command with Deceleration time

E. The frequency reference shall be from, selectively, an external speed potentiometer, external

analog signals (0-5 VDC, 0-10 VDC, 4 to 20mA with signal inversion), from the built in keypad, or

from serial communication.

1. The VFD shall provide five selectable digital outputs indicating the following:

a. Inverter running

b. Frequency equivalence signal

c. Frequency level detection

d. Torque polarity

e. Torque limiting

f. Auto-restarting

g. Overload early warning

h. Keypad operation mode

i. Inverter stopping

j. Ready input

k. Line/Inverter changeover

l. Motor 2 / Motor 1

m. Auxiliary terminal

n. Time-up signal

o. Cycle completion time

p. Stage No Indication (1, 2, and 4)

q. Alarm Indication (1, 2, 4, and 8)

r. Fan operation signal

s. Auto resetting

t. Universal DO

u. Overheat early warning

v. Second frequency level detection

w. Second overload early warning

x. Terminal C1 off signal

2.7 PROTECTIVE AND DIAGNOSTIC FEATURES

A. When a fault occurs, the VFD shall have a controlled shut down sequence. A Form C relay fault

output shall be available. The reason for the fault condition shall be enunciated on the LED display,

and the LCD graphic screen shall display the current, temperature, frequency, and voltage at the

time of the fault as well as potential reasons for the condition. The VFD shall monitor, sense, and

display the following fault conditions:

1. Over-current during acceleration

2. Over-current during deceleration

3. Over-current during constant speed operation

4. Ground fault

5. Input phase loss

6. Fuse blown

7. Over-voltage during acceleration

8. Over-voltage during deceleration

9. Over-voltage during constant speed operation

10. Under-voltage

11. Overheating of heatsink

12. External thermal relay

13. Over-temperature of internal air

14. Overheating at Dynamic Braking circuit

15. Motor 1 overload

16. Motor 2 overload




26 29 23 Page 7 of 10

17. Inverter unit overload

18. Over-speed

19. Memory Error

20. Keypad panel communication error

21. CPU error22. Option error

22. Operational procedure error

23. Output wiring error / Impedance imbalance

24. Modbus-RTU error

B. The VFD shall have a selectable Torque Limiting function for both motoring and braking that will

sense an overload condition and will reduce frequency and current temporarily until the load

reaches acceptable levels. If the overload condition is not settled in the proper amount of time,

the Drive will trip on overload. The Torque Limiting shall be programmable from 20-150% of Drive

rated motor torque (30 HP and below) and from 20-150% of Drive rated motor torque (40 HP and

above), with 1% resolution.

C. The VFD shall have a selectable electronic inverse time thermal overload function as required by

NEC and UL Standard 991 for an AC Induction Motor (Refer to applicable codes for specific

installation requirements). The overload shall be programmable from 20 - 135% of Drive rated

current.

D. The VFD shall have an over-voltage protection function that operates if supply voltage rises above

rated value or by motor's regeneration.

E. The VFD shall treat short circuits in either the output load or the output module as an over-current.

F. If the VFD heat sink temperature exceeds approximately 100-degrees C, the Drive will shut down

on over temperature fault.

G. The VFD shall provide output ground fault protection.

H. The VFD shall provide LED indication of DC bus voltage, which, when lit, will signify to maintenance

people the presence of potentially dangerous voltage.

2.8 VFD CONSTRUCTION

A. The VFD shall be a sinusoidal PWM type Drive with sensor-less vector control capability. Drive shall

be of modular construction for ease of access to control and power wiring, and maintenance. It

shall consist of the following general components:

1. Full wave diode AC/DC rectifier, to eliminate line voltage notching of the three phase

source and maintain an input displacement power factor of 0.95 or greater, regardless of

speed or load. SCR front ends with gate firing electronics are unacceptable.

2. DC link capacitors standard, DC link reactor available at all ratings, standard on systems

100HP+.

3. Input surge protection performed by internal MOV'S (metal oxide varistors) or devices

providing equal protection.

4. Insulated Gate Bipolar Transistor (IGBT) power section. The power section control shall use

vector dispersal pulse width modulated (PWM) control and fourth generation soft switching

IGBTs to reduce noise and allow longer cable length from VFD to motor without the need

for output filters.

5. The VFD shall be microprocessor based and fully transistorized with a 32 bit MCU and 33

MIPS processing speed.

6. Separate control and power terminal boards, with option plug shall be provided by the

VFD to allow for remote operation.

7. The VFD shall have an RS485 serial communications port as a standard with options for

communicating with recognized industry standard device level networks such as




26 29 23 Page 8 of 10

DeviceNet, Interbus-S, Profibus, Modbus Plus, LonWorks and Metasys N2. A universal

ethernet adapter shall be available for interface with the serial communications port.

8. The VFD shall have a Keypad capable of copying, uploading and downloading Drive

function codes.

9. Enclosure:

a. The VFS for this project shall be mounted in a NEMA 12 enclosure. All components

of the VFD system including the harmonics filters, bypass contactors, output dv/dt

filters and all other VFD system components shall be contained in the enclosure.

b. Enclosure cooling shall be filtered forced air cooling sized at 10 CFM per

horsepower. Filters shall be disposable pleated filters similar to 3M filtrate type

filters. Filters shall be sized to handle two times the fans rated CFM so that they will

not restrict flow even at 50% filter loading.

c. Provide six spare filters with each VFD system.

2.9 LINE REACTOR

A. Harmonic Filter: Provide a Matrix Harmonic Filter to reduce the harmonic currents going back into

the utility power grid and power system. The total harmonic voltage distortion factor (DF) at the

main 480 volt bus for voltage shall be less than 5 percent.

B. The filter shall include a contactor that shall de-energize the capacitors when the drive is less than

30% output.

PART 3 — EXECUTION

3.1 EXAMINATION

A. Verify that building environment can be maintained within the service conditions required by the

manufacturer.

3.2 INSTALLATION

A. Install in accordance with NEMA ICS 3.1.

B. Tighten accessible connections and mechanical fasteners after placing controller.

C. Select and install overload heater elements in motor controllers to match installed motor

characteristics.

D. Provide engraved plastic nameplates under the provisions of Section 26 05 53.

E. Motor Data: Neatly type label inside controller door identifying motor served, nameplate

horsepower, full load amperes, code letter, service factor, and voltage/phase rating. Place label

in clear plastic holder.

F. Ground and bond controller under the provisions of Section 26 05 26.

3.3 QUALITY ASSURANCE

A. All VFD's shall be 100% factory tested to ensure proper performance upon delivery.

B. VFD's installed in panels shall be 100% factory tested as a system by the VFD supplier.

3.4 FIELD QUALITY CONTROL




26 29 23 Page 9 of 10

A. Inspect and test in accordance with NETA ATS, except Section 4.

B. Perform inspections and tests listed in NETA ATS, Section 7.16 and NEMA ICS 3.1.

3.5 MANUFACTURER'S FIELD SERVICES

A. Section 01 45 00 - Quality Control: Manufacturer’s field services.

B. Prepare and startup variable frequency controller.

C. VFD and VFD system operational and maintenance training and startup service shall be provided

by the VFD supplier. The VFD vendor shall have factory trained personnel at field locations

convenient to the installation site, available for trouble shooting and/or startup assistance 24/7.

Provide 4 hours for each VFD at the owners facility.

D. Coordinate factory startup with the VFD factory representatives.

3.6 DEMONSTRATION AND TRAINING

A. Provide 4 hours of instruction each for 2 persons, to be conducted at project site with

manufacturer's representative.

3.7 WARRANTY

A. The VFD vendor shall provide a warranty for material and workmanship, for a period of twenty-four

months after start up or 30 months after shipment, whichever occurs first.

B. Warranty and non-warranty service shall be available in house and in the field. There shall be

authorized service centers locally available within 4 hours.

3.8 SPARE PARTS

A. Provide a list of all spare parts to the Owner at Substantial Completion.

END OF SECTION




26 29 23 Page 10 of 10

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Sine Source Eng PN 2020019 Millville City

January 2021 170 South Well House

Engine Generators

26 32 13 Page 1 of 22

SECTION 26 32 13

ENGINE GENERATORS

PART 1 - GENERAL

1.1 RELATED DOCUMENTS

A. Drawings and general provisions of the Contract, including General and Supplementary

Conditions and Division 01 Specification Sections, apply to this Section.

1.2 SUMMARY

A. Section includes packaged engine generators for non-emergency use with the following features:

1. Natural gas and LP gas engine.

2. Gaseous fuel system.

3. Control and monitoring.

4. Generator overcurrent and fault protection.

5. Generator, exciter, and voltage regulator.

6. Outdoor generator-set enclosure.

7. Vibration isolation devices.

8. Finishes.

B. Related Requirements:

1. Section 26 23 13 "Paralleling Low-Voltage Switchgear" for controls and paralleling

equipment for large or multiple parallel engine generators.

2. Section 26 36 00 "Transfer Switches" for transfer switches including sensors and relays to

initiate automatic-starting and -stopping signals for engine generators.

1.3 DEFINITIONS

A. 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.

B. LP: Liquefied petroleum.

1.4 ACTION SUBMITTALS

A. Product Data: For each type of product.

1. Include rated capacities, operating characteristics, electrical characteristics, and furnished

specialties and accessories.

2. Include thermal damage curve for generator.

3. Include time-current characteristic curves for generator protective device.

4. Include fuel consumption in cubic feet per hour (cubic meters per hour) at 0.8 power factor

at 0.5, 0.75 and 1.0 times generator capacity.

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

capacity.

6. Include air flow requirements for cooling and combustion air in cfm at 0.8 power factor, with

air supply temperature of 95 deg F (35 deg C), 80 deg F (27 deg C), 70 deg F (21 deg C),

and 50 deg F (10 deg C). Provide drawings showing requirements and limitations for location

of air intake and exhausts.



Engine Generators

26 32 13 Page 2 of 22

7. Include generator characteristics, including, but not limited to, kilowatt rating, efficiency,

reactances, and short-circuit current capability.

B. Shop Drawings:

1. Include plans and elevations for engine generator and other components specified.

2. Include details of equipment assemblies. Indicate dimensions, weights, loads, required

clearances, method of field assembly, components, and location and size of each field

connection.

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

4. Design calculations for selecting vibration isolators and seismic restraints and for designing

vibration isolation bases.

5. Vibration Isolation Base Details: Detail fabrication including anchorages and attachments

to structure and to supported equipment. Include base weights.

6. Include diagrams for power, signal, and control wiring. Complete schematic, wiring, and

interconnection diagrams showing terminal markings for EPS equipment and functional

relationship between all electrical components.

1.5 INFORMATIONAL SUBMITTALS

A. Qualification Data: For Installer and manufacturer.

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

manufacturer.

1. Basis for Certification: Indicate whether withstand certification is based on actual test of

assembled components or on calculation.

2. Dimensioned Outline Drawings of Equipment Unit: With engine and generator mounted on

rails, identify center of gravity and total weight, supplied enclosure, external silencer, and

each piece of equipment not integral to the engine generator, and locate and describe

mounting and anchorage provisions.

3. Detailed description of equipment anchorage devices on which the certification is based

and their installation requirements.

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

1. Certified summary of prototype-unit test report.

2. Certified Test Reports: For components and accessories that are equivalent, but not

identical, to those tested on prototype unit.

3. Certified Summary of Performance Tests: Certify compliance with specified requirement to

meet performance criteria for sensitive loads.

4. Report of factory test on units to be shipped for this Project, showing evidence of

compliance with specified requirements.

5. Report of sound generation.

6. Report of exhaust emissions showing compliance with applicable regulations.

D. Field quality-control reports.

E. Warranty: For special warranty.

1.6 CLOSEOUT SUBMITTALS

A. Operation and Maintenance Data: For engine generators to include in emergency, operation,

and maintenance manuals.



Engine Generators

26 32 13 Page 3 of 22

1. In addition to items specified in Section 01 78 23 "Operation and Maintenance Data,"

include the following:

a. List of tools and replacement items recommended to be stored at Project for ready

access. Include part and drawing numbers, current unit prices, and source of supply.

b. Operating instructions laminated and mounted adjacent to generator location.

c. Training plan.

1.7 MAINTENANCE MATERIAL SUBMITTALS

A. Furnish extra materials that match products installed and that are packaged with protective

covering for storage and identified with labels describing contents.

1. Fuses: One for every 10 of each type and rating, but no fewer than one of each.

2. Indicator Lamps: Two for every six of each type used, but no fewer than two of each.

3. Filters: One set each of lubricating oil, fuel, and combustion-air filters.

4. Tools: Each tool listed by part number in operations and maintenance manual.

1.8 QUALITY ASSURANCE

A. Installer Qualifications: An authorized representative who is trained and approved by

manufacturer.

1.9 WARRANTY

PART 2 - PRODUCTS

2.1 MANUFACTURERS Subject to requirements, these include, but are not limited to the following:

1. Caterpillar; Engine Div.

2. Generac Power Systems, Inc.

3. Kohler Power Systems.

1. Onan/Cummins Power Generation; Industrial Business Group

B. Source Limitations: Obtain packaged engine generators and auxiliary components through one

source from a single manufacturer.

2.2 PERFORMANCE REQUIREMENTS

A. Seismic Performance: Engine generator housing, engine generator, batteries, battery racks,

silencers,and sound attenuating equipment, accessories, and components shall withstand the

effects of earthquake motions determined according to ASCE/SEI 7.

1. The term "withstand" means "the unit will remain in place without separation of any parts

when subjected to the seismic forces specified and the unit will be fully operational after the

seismic event."

2. Shake-table testing shall comply with ICC-ES AC156. Testing shall be performed with all fluids

at worst-case normal levels.

3. Component Importance Factor: 1.5.

B. B11 Compliance: Comply with B11.19.

C. NFPA Compliance:

1. Comply with NFPA 37.

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26 32 13 Page 4 of 22

2. Comply with NFPA 70.

D. UL Compliance: Comply with UL 2200.

E. Engine Exhaust Emissions: Comply with EPA Tier 4 requirements and applicable state and local

government requirements.

F. Noise Emission: Comply with applicable state and local government requirements for maximum

noise level at adjacent property boundaries due to sound emitted by engine generator including

engine, engine exhaust, engine cooling-air intake and discharge, and other components of

installation.

G. Environmental Conditions: Engine generator system shall withstand the following environmental

conditions without mechanical or electrical damage or degradation of performance capability:

1. Ambient Temperature: Minus 20 to 110 deg F (Minus 29 to plus 44 deg C).

2. Relative Humidity: Zero to 95 percent.

3. Altitude: Sea level to 6500 feet (1830 m).

2.3 ENGINE GENERATOR ASSEMBLY DESCRIPTION

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

B. Electrical Components, Devices, and Accessories: Listed and labeled as defined in NFPA 70, by a

testing agency acceptable to authorities having jurisdiction, and marked for intended location

and use.

C. Power Rating: [Prime] [Industrial].

D. Overload Capacity: 110 percent of service load for 1 hour in 12 consecutive hours.

E. Service Load: <Insert number> kVA.

F. Power Factor: [0.8] <Insert number>, lagging.

G. Frequency: 60 Hz

H. Voltage: [208] [240] [480] [600] [4160] V ac.

I. Phase: Three-phase, [three] [four] wire, [wye] [delta].

J. Induction Method: [Naturally aspirated] [Turbocharged].

K. Governor: Adjustable isochronous, with speed sensing.

L. 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.

1. 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.

M. Capacities and Characteristics:



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26 32 13 Page 5 of 22

1. Power Output Ratings: Nominal ratings as indicated at 0.8 power factor excluding power

required for the continued and repeated operation of the unit and auxiliaries[, with

capacity as required to operate as a unit as evidenced by records of prototype testing].

2. Nameplates: For each major system component to identify manufacturer's name and

address, and model and serial number of component.

N. Engine Generator Performance:

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

load to full load.

2. Transient Voltage Performance: Not more than 20 percent variation for 50 percent step-load

increase or decrease. Voltage shall recover and remain within the steady-state operating

band within three seconds.

3. Steady-State Frequency Operational Bandwidth: 0.5 percent of rated frequency from no

load to full load.

4. 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.

5. Transient Frequency Performance: Less than 5 percent variation for 50 percent step-load

increase or decrease. Frequency shall recover and remain within the steady-state operating

band within five seconds.

6. 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 according to NEMA MG 1, shall not exceed 50 percent.

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

terminals, system shall supply a minimum of 250 percent of rated full-load current for not less

than 10 seconds and then clear the fault automatically, without damage to generator

system components.

8. Start Time: [10] <Insert time> seconds.

O. Engine Generator Performance for Sensitive Loads:

1. Oversizing generator compared with the rated power output of the engine is permissible to

meet specified performance.

a. Nameplate Data for Oversized Generator: Show ratings required by the Contract

Documents rather than ratings that would normally be applied to generator size

installed.

2. Steady-State Voltage Operational Bandwidth: 1 percent of rated output voltage from no

load to full load.

3. 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.

4. Steady-State Frequency Operational Bandwidth: Plus or minus 0.25 percent of rated

frequency from no load to full load.

5. 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.

6. Transient Frequency Performance: Less than 2-Hz variation for 50 percent step-load increase

or decrease. Frequency shall recover and remain within the steady-state operating band

within three seconds.

7. Output Waveform: At no load, harmonic content measured line to neutral shall not exceed

2 percent total with no slot ripple. Telephone influence factor, determined according to

NEMA MG 1, shall not exceed 50 percent.



Engine Generators

26 32 13 Page 6 of 22

8. 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 winding

insulation or other generator system components.

9. Excitation System: Performance shall be unaffected by voltage distortion caused by

nonlinear load.

a. Provide permanent magnet excitation for power source to voltage regulator.

10. Start Time: [10] <Insert time> seconds.

P. Parallel Engine Generators:

1. Automatic reactive output power control and load sharing between engine generators

operated in parallel.

2. Automatic regulation, automatic connection to a common bus, and automatic

synchronization, with manual controls and instruments to monitor and control paralleling

functions.

3. Protective relays required for equipment and personnel safety.

4. Paralleling suppressors to protect excitation systems.

5. Reverse power protection.

6. Loss of field protection.

2.4 GASEOUS ENGINE

A. Fuel: [Natural gas] [and] [LP gas] [Natural gas with LP gas backup].

B. Rated Engine Speed: 1800 rpm.

C. Lubrication System: Engine or skid-mounted.

1. Filter and Strainer: Rated to remove 90 percent of particles 5 micrometers and smaller while

passing full flow.

2. 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.

3. 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.

D. Jacket Coolant Heater: Electric-immersion type, factory installed in coolant jacket system. Comply

with UL 499.

E. Cooling System: Closed loop, liquid cooled, with radiator factory mounted on engine generator

mounting frame and integral engine-driven coolant pump.

1. Coolant: Solution of 50 percent ethylene-glycol-based antifreeze and 50 percent water, with

anticorrosion additives as recommended by engine manufacturer.

2. Size of Radiator: Adequate to contain expansion of total system coolant from cold start to

110 percent load condition.

3. 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.

4. Temperature Control: Self-contained, thermostatic-control valve modulates coolant flow

automatically to maintain optimum constant coolant temperature as recommended by

engine manufacturer.

5. Coolant Hose: Flexible assembly with inside surface of nonporous rubber and outer covering

of aging-, ultraviolet-, and abrasion-resistant fabric.



Engine Generators

26 32 13 Page 7 of 22

a. Rating: 50-psig (345-kPa) maximum working pressure with coolant at 180 deg F (82

deg C), and noncollapsible under vacuum.

b. End Fittings: Flanges or steel pipe nipples with clamps to suit piping and equipment

connections.

F. Cooling System: Closed loop, liquid cooled, with remote radiator and [integral engine-driven]

[auxiliary] coolant pump. Comply with requirements in Section 23 21 13 "Hydronic Piping" for

coolant piping.

1. Configuration: [Vertical] [Horizontal] air discharge.

2. Radiator Core Tubes: [Aluminum] [Nonferrous-metal construction other than aluminum].

3. Size of Radiator: Adequate to contain expansion of total system coolant from cold start to

110 percent load condition.

4. 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.

5. Fan: Driven by [multiple belts from engine shaft] [totally enclosed electric motor with sealed

bearings].

6. Coolant: Solution of 50 percent ethylene-glycol-based antifreeze and 50 percent water, with

anticorrosion additives as recommended by engine manufacturer.

7. Temperature Control: Self-contained, thermostatic-control valve modulates coolant flow

automatically to maintain optimum constant coolant temperature as recommended by

engine manufacturer.

G. 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.

1. Minimum sound attenuation of 25 dB at 500 Hz.

2. Sound level measured at a distance of 25 feet (8 m) from exhaust discharge after installation

is complete shall be [78] <Insert number> dBA or less.

H. Muffler/Silencer: Semicritical type, sized as recommended by engine manufacturer and selected

with exhaust piping system to not exceed engine manufacturer's engine backpressure

requirements.




I. Muffler/Silencer: Commercial type, sized as recommended by engine manufacturer and selected

with exhaust piping system to not exceed engine manufacturer's engine backpressure

requirements.




J. Air-Intake Filter: [Standard] [Heavy]-duty, engine-mounted air cleaner with replaceable dry-filter

element and "blocked filter" indicator.

K. Starting System: [12] [24]-V electric, with negative ground.

1. Components: Sized so they are not damaged during a full engine-cranking cycle with

ambient temperature at maximum specified in "Performance Requirements" Article.

2. Cranking Motor: Heavy-duty unit that automatically engages and releases from engine

flywheel without binding.

3. Cranking Cycle: 60 seconds.



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26 32 13 Page 8 of 22

4. Battery: [Lead acid] [Nickel cadmium], with capacity within ambient temperature range

specified in "Performance Requirements" Article to provide specified cranking cycle at least

[twice] [three times] without recharging.

5. Battery Cable: Size as recommended by engine manufacturer for cable length indicated.

Include required interconnecting conductors and connection accessories.

6. Battery Compartment: Factory fabricated of metal with acid-resistant finish and thermal

insulation. Thermostatically controlled heater shall be arranged to maintain battery above

50 deg F (10 deg C)regardless of external ambient temperature within range specified in

"Performance Requirements" Article. Include accessories required to support and fasten

batteries in place. Provide ventilation to exhaust battery gases.

7. Battery Stand: Factory-fabricated, two-tier metal with acid-resistant finish designed to hold

the quantity of battery cells required and to maintain the arrangement to minimize lengths

of battery interconnections.

8. Battery-Charging Alternator: Factory mounted on engine with solid-state voltage regulation

and 35 A minimum continuous rating.

9. Battery Charger: Current-limiting, automatic-equalizing and float-charging type designed

for [lead-acid] [nickel cadmium] batteries. Unit shall comply with UL 1236 and include the

following features:

a. Operation: Equalizing-charging rate of 10 A 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.

b. Automatic Temperature Compensation: Adjust float and equalize voltages for

variations in ambient temperature from minus 40 deg F (minus 40 deg C) to 140 deg F

(plus 60 deg C) to prevent overcharging at high temperatures and undercharging at

low temperatures.

c. Automatic Voltage Regulation: Maintain constant output voltage regardless of input

voltage variations up to plus or minus 10 percent.

d. Ammeter and Voltmeter: Flush mounted in door. Meters shall indicate charging rates.

e. 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.

f. Enclosure and Mounting: NEMA 250, Type 1, wall-mounted cabinet.

2.5 GASEOUS FUEL SYSTEM

A. Natural Gas Piping: Comply with requirements in Section 23 11 23 "Facility Natural Gas Piping."

B. LP Gas Piping: Comply with requirements in Section 23 11 26 "Facility Liquefied-Petroleum Gas

Piping."

C. Gas Train: Comply with NFPA 37.

D. Engine Fuel System:

E. [Natural Gas] [and] [LP Gas] [Natural Gas with LP Gas Backup], Vapor-Withdrawal System:

1. Carburetor.

2. Secondary Gas Regulators: One for each fuel type, with atmospheric vents piped to building

exterior.

3. Fuel-Shutoff Solenoid Valves: NRTL-listed, normally closed, safety shutoff valves; one for each

fuel source.

4. Fuel Filters: One for each fuel type.



Engine Generators

26 32 13 Page 9 of 22

5. Manual Fuel Shutoff Valves: One for each fuel type.

6. Flexible Fuel Connectors: Minimum one for each fuel connection.

7. LP gas flow adjusting valve.

8. Fuel change gas pressure switch.

2.6 CONTROL AND MONITORING

A. 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 generator-set shutdown. When engine generator is running, specified system or

equipment failures or derangements automatically shut down engine generator and initiate

alarms.

B. 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 generator-

set shutdown. When engine generator is running, specified system or equipment failures or

derangements automatically shut down engine generator and initiate alarms.

C. Provide minimum run time control set for [15] [30] <Insert number> minutes with override only by

operation of a remote emergency-stop switch.

D. Comply with UL 508A.

E. 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

engine generator. Mounting method shall isolate the control panel from generator-set vibration.

Panel shall be powered from the engine generator battery.

F. Configuration: Operating and safety indications, protective devices, basic system controls, and

engine gages shall be grouped in a common wall-mounted control and monitoring panel. Panel

shall be powered from the engine generator battery.

G. Configuration: Operating and safety indications, protective devices, basic system controls, engine

gages, instrument transformers, generator disconnect switch or circuit breaker, and other

indicated components shall be grouped in a combination control and power panel. Control and

monitoring section of panel shall be isolated from power sections by steel barriers. Panel shall be

powered from the engine generator battery. Panel features shall include the following:

1. Wall-Mounting Cabinet Construction: Rigid, self-supporting steel unit complying with

NEMA ICS 6.

2. Switchboard Construction: Freestanding unit complying with Section 26 24 13

"Switchboards." Power bus shall be copper. Bus, bus supports, control wiring, and

temperature rise shall comply with UL 891.

3. Switchgear Construction: Freestanding unit complying with Section 26 23 00 "Low-Voltage

Switchgear."

H. Control and Monitoring Panel:

1. Digital controller with integrated LCD, controls, and microprocessor, capable of local and

remote control, monitoring, and programming, with battery backup.

2. Analog control panel with dedicated gages and indicator lights for the instruments and

alarms indicated below.

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



Engine Generators

26 32 13 Page 10 of 22

a. Engine lubricating-oil pressure gage.

b. Engine-coolant temperature gage.

c. DC voltmeter (alternator battery charging).

d. Running-time meter.

e. AC voltmeter, [for each phase] [connected to a phase selector switch].

f. AC ammeter, [for each phase] [connected to a phase selector switch].

g. AC frequency meter.

h. Generator-voltage adjusting rheostat.

4. Controls and Protective Devices: Controls, shutdown devices, and common visual alarm

indication, including the following:

a. Cranking control equipment.

b. Run-Off-Auto switch.

c. Control switch not in automatic position alarm.

d. Overcrank alarm.

e. Overcrank shutdown device.

f. Low water temperature alarm.

g. High engine temperature prealarm.

h. High engine temperature.

i. High engine temperature shutdown device.

j. Overspeed alarm.

k. Overspeed shutdown device.

l. Low fuel main tank.

m. Coolant low-level alarm.

n. Coolant low-level shutdown device.

o. Coolant high-temperature prealarm.

p. Coolant high-temperature alarm.

q. Coolant low-temperature alarm.

r. Coolant high-temperature shutdown device.

s. EPS supplying load indicator.

t. Battery high-voltage alarm.

u. Low cranking voltage alarm.

v. Battery-charger malfunction alarm.

w. Battery low-voltage alarm.

x. Lamp test.

y. Contacts for local and remote common alarm.

z. Low-starting air pressure alarm.

aa. Low-starting hydraulic pressure alarm.

bb. Remote manual stop shutdown device.

cc. Air shutdown damper alarm when used.

dd. Air shutdown damper shutdown device when used.

ee. Hours of operation.

ff. Engine generator metering, including voltage, current, Hz, kW, kVA, and power

factor.

gg. Generator overcurrent protective device not closed alarm.

I. Engine Generator Metering: Comply with [Section 26 09 13 "Electrical Power Monitoring and

Control."] [Section 26 27 13 "Electricity Metering."] [Section 26 09 13 "Electrical Power Monitoring

and Control" and Section 26 27 13 "Electricity Metering."]

J. Connection to Datalink:

1. A separate terminal block, factory wired to Form C dry contacts, for each alarm and status

indication.



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2. Provide connections for datalink transmission of indications to remote data terminals via

[ModBus] [LonWorks] [Ethernet] <Insert other data protocol>. Data system connections to

terminals are covered in Section 26 09 13 "Electrical Power Monitoring and Control."

K. 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.

L. 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.

1. Overcrank alarm.

2. Coolant low-temperature alarm.

3. High engine temperature prealarm.

4. High engine temperature alarm.

5. Low lube oil pressure alarm.

6. Overspeed alarm.

7. Low fuel main tank alarm.

8. Low coolant level alarm.

9. Low cranking voltage alarm.

10. Contacts for local and remote common alarm.

11. Audible-alarm silencing switch.

12. Air shutdown damper when used.

13. Run-Off-Auto switch.

14. Control switch not in automatic position alarm.

15. Fuel tank derangement alarm.

16. Fuel tank high-level shutdown of fuel supply alarm.

17. Lamp test.

18. Low cranking voltage alarm.

19. Generator overcurrent protective device not closed.

M. Remote Emergency-Stop Switch: Flush; wall mounted, unless otherwise indicated; and labeled.

Push button shall be protected from accidental operation.

N. 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.

2.7 GENERATOR OVERCURRENT AND FAULT PROTECTION

A. Generator Circuit Breaker: Molded-case, thermal-magnetic type; 100 percent rated; complying

with UL 489.

1. Tripping Characteristic: Designed specifically for generator protection.

2. Trip Rating: Matched to generator output rating.

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

protective devices.

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

B. Generator Circuit Breaker: Molded-case, electronic-trip type; 100 percent rated; complying with

UL 489.



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

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


protective devices.

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

C. Generator Circuit Breaker: Insulated-case, electronic-trip type; 100 percent rated; complying with

UL 489.

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

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


protective devices.

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

D. Generator Disconnect Switch: Molded-case type, 100 percent rated.

1. Trip Rating: Matched to generator output rating.

2. Shunt Trip: Connected to trip switch when signaled by generator protector or by other

protective devices.

E. Generator Protector: Microprocessor-based unit shall continuously monitor current level in each

phase of generator output, integrate generator heating effect over time, and predict when

thermal damage of alternator will occur. When signaled by generator protector or other

generator-set protective devices, a shunt-trip device in the generator disconnect switch shall open

the switch to disconnect the generator from load circuits. Protector performs the following

functions:

1. Initiates a generator overload alarm when generator has operated at an overload

equivalent to 110 percent of full-rated load for 60 seconds. Indication for this alarm is

integrated with other generator-set malfunction alarms. Contacts shall be available for load

shed functions.

2. Under single or three-phase fault conditions, regulates generator to 300 percent of rated full-

load current for up to 10 seconds.

3. As overcurrent heating effect on the generator approaches the thermal damage point of

the unit, protector switches the excitation system off, opens the generator disconnect

device, and shuts down the engine generator.

4. Senses clearing of a fault by other overcurrent devices and controls recovery of rated

voltage to avoid overshoot.

2.8 GENERATOR, EXCITER, AND VOLTAGE REGULATOR

A. Comply with NEMA MG 1.

B. Drive: Generator shaft shall be directly connected to engine shaft. Exciter shall be rotated integrally

with generator rotor.

C. Electrical Insulation: [Class H] [or] [Class F].

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

if required. Provide [six] [12] lead alternator.

E. Range: Provide [limited] [broad] [extended] range of output voltage by adjusting the excitation

level.



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F. 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.

G. Enclosure: Dripproof.

H. Instrument Transformers: Mounted within generator enclosure.

I. Voltage Regulator: Solid-state type, separate from exciter.

1. Adjusting Rheostat on Control and Monitoring Panel: Provide plus or minus 5 percent

adjustment of output-voltage operating band.

2. Maintain voltage within [15] [20] [30] percent on one step, full load.

3. Provide anti-hunt provision to stabilize voltage.

4. Maintain frequency within [5] [10] [15] percent and stabilize at rated frequency within [2] [5]

seconds.

J. Strip Heater: Thermostatically controlled unit arranged to maintain stator windings above dew

point.

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

L. Subtransient Reactance: [12] <Insert number> percent, maximum.

2.9 LOAD BANK

A. Description: Permanent, outdoor, weatherproof, remote-controlled, forced-air-cooled, [resistive]

[resistive and reactive] unit capable of providing a balanced three-phase, delta-connected load

to engine generator at [100] <Insert number> percent rated-system capacity, at [80] <Insert

number> percent power factor, lagging.[ Unit may contain separate resistive and reactive load

banks controlled by a common control panel.] Unit shall be capable of selective control of load in

25 percent steps and with minimum step changes of approximately 5 and 10 percent available.

B. Description: Permanent, radiator-mounted[, resistive] unit capable of providing a balanced three-

phase, delta-connected load to engine generator at [50] [70] <Insert number> percent rated-

system capacity. Unit shall be capable of selective control of load in 25 percent steps of load bank

rating and with minimum step changes of approximately 5 and 10 percent available.

C. Resistive Load Elements: Corrosion-resistant chromium alloy with ceramic and stainless-steel

supports. Elements shall be double insulated and designed for repetitive on-off cycling. Elements

shall be mounted in removable aluminized-steel heater cases. Galvanized steel is prohibited.

Element's maximum resistance shall be between 100 and 105 percent of rated resistance.

D. Reactive Load Elements: Epoxy-encapsulated reactor coils.

E. Load-Bank Heat Dissipation: Integral fan with totally enclosed motor shall provide uniform cooling

airflow through load elements. Airflow and coil operating current shall be such that, at maximum

load, with ambient temperature at the upper end of specified range, load-bank elements operate

at not more than 50 percent of maximum continuous temperature rating of resistance elements.

F. Load-Element Switching: Remote-controlled contactors switch groups of load elements. Contactor

coils are rated 120 V. Contactors shall be located in a separate NEMA 250, Type 3R enclosure within

load-bank enclosure, accessible from exterior through hinged doors with tumbler locks.



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G. Contactor Enclosures: Heated by thermostatically controlled strip heaters to prevent

condensation.

H. Load-Bank Enclosures: NEMA 250, Type 3R, aluminized steel complying with NEMA ICS 6. Louvers at

cooling-air intake and discharge openings shall prevent entry of rain and snow. Openings for

airflow shall be screened with 1/2-inch- (13-mm-) square, galvanized-steel mesh. Reactive load

bank shall include automatic shutters at air intake and discharge. Components other than resistive

elements shall receive exterior epoxy coating with compatible primer. Comply with requirements

in Section 09 96 00 "High-Performance Coatings."

I. Protective Devices: Power input circuits to load banks shall be fused, and fuses shall be selected to

coordinate with generator circuit breaker. Fuse blocks shall be located in contactor enclosure.

Cooling airflow and overtemperature sensors shall automatically shut down and lock out load bank

until manually reset. Safety interlocks on access panels and doors shall disconnect load power,

control, and heater circuits. Fan motor shall be separately protected by overload and short-circuit

devices. Short-circuit devices shall be noninterchangeable fuses with 200,000 A interrupting

capacity.

J. Load Bank Remote-Control Panel: Separate from load bank in NEMA 250, Type 1 enclosure with a

control power switch and pilot light, and switches controlling groups of load elements.

K. Control Sequence: Control panel may be preset for adjustable single-step loading of generator

during automatic exercising.

2.10 OUTDOOR GENERATOR-SET ENCLOSURE

A. Description: Vandal-resistant, sound-attenuating, weatherproof steel housing, wind resistant up to

100 mph (160 km/h). 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.

1. Sound Attenuation Level: <Insert level>.

B. Description: Prefabricated or pre-engineered galvanized-steel-clad, integral structural-steel-

framed, walk-in enclosure, erected on concrete foundation.

C. Structural Design and Anchorage: Comply with ASCE/SEI 7 for wind loads up to 100 mph (160 km/h).

D. Seismic Design: Comply with seismic requirements in Section 26 05 48.16 "Seismic Controls for

Electrical Systems."

E. Fire Protection: Provide fire protection in accordance with [Section 21 13 16 "Dry-Pipe Sprinkler

Systems."] [Section 21 13 13"Wet-Pipe Sprinkler Systems."] Provide smoke detector in enclosure;

mounted according to NFPA 72.

F. Hinged Doors: With padlocking provisions.

G. Space Heater: Thermostatically controlled and sized to prevent condensation.

H. Lighting: Provide weather-resistant [fluorescent] [LED] lighting with [30 fc (330 lux)] [50 fc (550 lux)]

average maintained.

I. Thermal Insulation: Manufacturer's standard materials and thickness selected in coordination with

space heater to maintain winter interior temperature within operating limits required by engine

generator components.



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J. Muffler Location: [Within] [External to] enclosure.

K. Engine Cooling Airflow through Enclosure: Maintain temperature rise of system components within

required limits when unit operates at 110 percent of rated load for 2 hours with ambient

temperature at top of range specified in system service conditions.

1. Louvers: Fixed-engine, cooling-air inlet and discharge. Storm-proof and drainable louvers

prevent entry of rain and snow.

2. Automatic Dampers: At engine cooling-air inlet and discharge. Dampers shall be closed to

reduce enclosure heat loss in cold weather when unit is not operating.

3. Ventilation: Provide temperature-controlled exhaust fan interlocked to prevent operation

when engine is running.

L. Interior Lights with Switch: Factory-wired, vapor-proof fixtures within housing; arranged to illuminate

controls and accessible interior. Arrange for external electrical connection.

1. AC lighting system and connection point for operation when remote source is available.

2. DC lighting system for operation when remote source and generator are both unavailable.

M. Convenience Outlets: Factory wired, GFCI. Arrange for external electrical connection.

2.11 REMOTE RADIATOR MOTORS

A. Description: NEMA MG 1, Design B, medium induction random-wound, squirrel-cage motor.

B. Efficiency: Energy efficient, as defined in NEMA MG 1.

C. Service Factor: 1.15.

D. Bearings: Regreasable, shielded, antifriction ball bearings suitable for radial and thrust loading.

E. Motor Sizes: Minimum size as indicated. If not indicated, large enough so driven load will not require

motor to operate in service factor range above 1.0.

F. Temperature Rise: Match insulation rating.

G. Code Letter Designation:

1. Motors [15] <Insert number> HP and Larger: NEMA starting Code F or Code G.

2. Motors Smaller Than [15] <Insert number> HP: Manufacturer's standard starting

characteristic.

H. Enclosure Material: Cast iron for motor frame sizes 324T and larger; rolled steel for motor frame sizes

smaller than 324T.

I. Controllers, Electrical Devices, and Wiring: Electrical devices and connections are specified in

electrical Sections.

2.12 VIBRATION ISOLATION DEVICES

A. 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.



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1. Material: [Standard neoprene] [Natural rubber] [Bridge-bearing neoprene, complying with

AASHTO M 251] separated by steel shims.

2. Shore "A" Scale Durometer Rating: [30] [40] [45] [50] [60] [65] [70] <Insert number>.

3. Number of Layers: [One] [Two] [Three] [Four] <Insert number>.

4. Minimum Deflection: [1 inch (25 mm)] <Insert value>.

B. Restrained Spring Isolators: Freestanding, steel, open-spring isolators with seismic restraint.

1. Housing: Steel with resilient vertical-limit stops to prevent spring extension due to wind loads

or if weight is removed; factory-drilled baseplate bonded to 1/4-inch- (6-mm-) thick,

elastomeric isolator pad attached to baseplate underside; and adjustable equipment

mounting and leveling bolt that acts as blocking during installation.

2. Outside Spring Diameter: Not less than 80 percent of compressed height of the spring at

rated load.

3. Minimum Additional Travel: 50 percent of required deflection at rated load.

4. Lateral Stiffness: More than 80 percent of rated vertical stiffness.

5. Overload Capacity: Support 200 percent of rated load, fully compressed, without

deformation or failure.

6. Minimum Deflection: [1 inch (25 mm)] <Insert value>.

C. Comply with requirements in Section 23 21 16 "Hydronic Piping Specialties" for vibration isolation

and flexible connector materials for steel piping.

D. Comply with requirements in Section 23 31 13 "Metal Ducts" for vibration isolation and flexible

connector materials for exhaust shroud and ductwork.

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

2.13 FINISHES

A. Indoor and Outdoor Enclosures and Components: Manufacturer's standard finish over corrosion-

resistant pretreatment and compatible primer.

2.14 SOURCE QUALITY CONTROL

A. Prototype Testing: Factory test engine generator using same engine model, constructed of

identical or equivalent components and equipped with identical or equivalent accessories.

1. Tests: Comply with IEEE 115.

B. 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:

1. Test components and accessories furnished with installed unit that are not identical to those

on tested prototype to demonstrate compatibility and reliability.

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

3. Full load run.

4. Maximum power.

5. Voltage regulation.

6. Transient and steady-state governing.

7. Single-step load pickup.

8. Safety shutdown.

9. Provide 14 days' advance notice of tests and opportunity for observation of tests by Owner's

representative.



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

PART 3 - EXECUTION

3.1 EXAMINATION

A. Examine areas, equipment bases, and conditions, with Installer present, for compliance with

requirements for installation and other conditions affecting packaged engine generator

performance.

B. Examine roughing-in for piping systems and electrical connections. Verify actual locations of

connections before packaged engine generator installation.

C. Proceed with installation only after unsatisfactory conditions have been corrected.

3.2 PREPARATION

A. 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 according to requirements indicated:

1. Notify [Architect] [Construction Manager] [Owner] no fewer than [two] <Insert number>

working days in advance of proposed interruption of electrical service.

2. Do not proceed with interruption of electrical service without [Architect's] [Construction

Manager's] [Owner's] written permission.

3.3 INSTALLATION

A. Comply with NECA 1 and NECA 404.

B. Comply with packaged engine generator manufacturers' written installation.

C. Equipment Mounting:

1. Install packaged engine generators on cast-in-place concrete equipment bases. Comply

with requirements for equipment bases and foundations specified in [Section 03 30 00 "Cast-

in-Place Concrete."] [Section 03 30 53 "Miscellaneous Cast-in-Place Concrete."]

2. Coordinate size and location of concrete bases for packaged engine generators[ and

remote radiators mounted on grade]. Cast anchor-bolt inserts into bases. Concrete,

reinforcement, and formwork requirements are specified with concrete.

3. Install [packaged engine generator] [engine generator in a walk-in enclosure] with

[elastomeric isolator pads] [restrained spring isolators] having a minimum deflection of [1

inch (25 mm)] <Insert static deflection> on 4-inch- (100-mm-) high concrete base. Secure

[engine generator] [enclosure] to anchor bolts installed in concrete bases. Concrete base

construction is specified in Section 26 05 48.16 "Seismic Controls for Electrical Systems."

4. Remote Radiators:

a. Install remote radiator with [elastomeric isolator pads] [restrained spring isolators] on

[concrete base on grade] [roof equipment supports on roof].

b. Coordinate size and location of roof curbs, equipment supports, and roof

penetrations for remote radiators. These items are specified in Section 07 72 00 "Roof

Accessories."

D. Install packaged engine generator to provide access, without removing connections or

accessories, for periodic maintenance.



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E. Cooling System: Install Schedule 40, black steel piping with welded joints for cooling water piping

between engine generator and [heat exchanger] [remote radiator]. Piping materials and

installation requirements are specified in Section 23 21 13 "Hydronic Piping."

1. Install isolating thimbles where exhaust piping penetrates combustible surfaces. Provide a

minimum of 9 inches (225 mm) clearance from combustibles.

2. Insulate cooling system piping and components according to requirements in

Section 23 07 19 "HVAC Piping Insulation."

F. Exhaust System: Install Schedule 40, black steel piping with welded joints and connect to engine

muffler. Install thimble at wall. Piping shall be same diameter as muffler outlet.

1. Install flexible connectors and steel piping materials according to requirements in

Section 23 21 16 "Hydronic Piping Specialties."

2. Insulate muffler/silencer and exhaust system components according to requirements in

Section 23 07 19 "HVAC Piping Insulation."

3. Install isolating thimbles where exhaust piping penetrates combustible surfaces with a

minimum of 9 inches (225 mm) clearance from combustibles.

G. Drain Piping: Install condensate drain piping to muffler drain outlet with a shutoff valve, stainless-

steel flexible connector, and Schedule 40, black steel pipe, the full size of the drain connection,

with welded joints.

H. Gaseous Fuel Piping:

1. Natural gas piping, valves, and specialties for gas distribution are specified in

Section 23 11 23 "Facility Natural Gas Piping."

2. LP gas piping, valves, and specialties for gas piping are specified in Section 23 11 26 "Facility

Liquefied-Petroleum Gas Piping."

I. Electrical Wiring: Install electrical devices furnished by equipment manufacturers but not specified

to be factory mounted.

3.4 CONNECTIONS

A. Piping installation requirements are specified in other Sections. Drawings indicate general

arrangement of piping and specialties.

B. Connect fuel, cooling-system, and exhaust-system piping adjacent to packaged engine

generator to allow service and maintenance.

C. Connect cooling-system water piping to engine generator and [remote radiator] [heat

exchanger] with flexible connectors.

D. Connect engine exhaust pipe to engine with flexible connector.

E. Gaseous Fuel Connections:

1. Connect fuel piping to engines with a gate valve and union and flexible connector.

2. Install manual shutoff valve in a remote location to isolate gaseous fuel supply to the

generator.

3. Vent gas pressure regulators outside building a minimum of 60 inches (1500 mm) from

building openings.

F. Ground equipment according to Section 26 05 26 "Grounding and Bonding for Electrical Systems."



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26 32 13 Page 19 of 22

G. Connect wiring according to Section 26 05 19 "Low-Voltage Electrical Power Conductors and

Cables." Provide a minimum of one 90-degree bend in flexible conduit routed to the engine

generator from a stationary element.

H. Balance single-phase loads to obtain a maximum of 10 percent unbalance between any two

phases.

3.5 IDENTIFICATION

A. Identify system components according to Section 23 05 53 "Identification for HVAC Piping and

Equipment" and Section 26 05 53 "Identification for Electrical Systems."

B. Install a sign indicating the generator neutral is bonded to the main service neutral at the main

service location.

3.6 FIELD QUALITY CONTROL

A. Testing Agency: Owner will engage a qualified testing agency to perform tests and inspections.

B. Testing Agency: Engage a qualified testing agency to perform tests and inspections.

C. Manufacturer's Field Service: Engage a factory-authorized service representative to test and

inspect components, assemblies, and equipment installations, including connections.

D. Perform tests and inspections[ with the assistance of a factory-authorized service representative].

E. Tests and Inspections:

1. Perform tests recommended by manufacturer and each visual and mechanical inspection

and electrical and mechanical test listed in the first two subparagraphs below as specified

in the NETA ATS. Certify compliance with test parameters.

a. Visual and Mechanical Inspection

1) Compare equipment nameplate data with drawings and specifications.

2) Inspect physical and mechanical condition.

3) Inspect anchorage, alignment, and grounding.

4) Verify the unit is clean.

b. Electrical and Mechanical Tests

1) Perform insulation-resistance tests in accordance with IEEE 43.

a) Machines larger than 200 hp (150 kW). Test duration shall be 10 minutes.

Calculate polarization index.

b) Machines 200 hp (150 kW) or less. Test duration shall be one minute.

Calculate the dielectric-absorption ratio.

2) Test protective relay devices.

3) Verify phase rotation, phasing, and synchronized operation as required by the

application.

4) Functionally test engine shutdown for low oil pressure, overtemperature,

overspeed, and other protection features as applicable.

5) Perform vibration test for each main bearing cap.

6) Verify correct functioning of the governor and regulator.



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26 32 13 Page 20 of 22

2. Battery Tests: Equalize charging of battery cells according to manufacturer's written

instructions. Record individual cell voltages.

a. 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.

b. Test for contact integrity of all connectors. Perform an integrity load test and a

capacity load test for the battery.

c. Verify acceptance of charge for each element of the battery after discharge.

d. Verify that measurements are within manufacturer's specifications.

3. Battery-Charger Tests: Verify specified rates of charge for both equalizing and float-charging

conditions.

4. 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.

5. Exhaust-System Back-Pressure Test: Use a manometer with a scale exceeding 40-inch wg

(120 kPa). 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.

6. Exhaust Emissions Test: Comply with applicable government test criteria.

7. 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.

8. Harmonic-Content Tests: Measure harmonic content of output voltage at 25 percent and

100 percent of rated linear load. Verify that harmonic content is within specified limits.

9. 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] <Insert

number> locations [25 feet (8 m) from edge of the generator enclosure] [on the property

line] <Insert location for measurement>, and compare measured levels with required values.

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

G. Test instruments shall have been calibrated within the last 12 months, traceable to NIST Calibration

Services, and adequate for making positive observation of test results. Make calibration records

available for examination on request.

H. Leak Test: After installation, charge exhaust, coolant, and fuel systems and test for leaks. Repair

leaks and retest until no leaks exist.

I. Operational Test: After electrical circuitry has been energized, start units to confirm proper motor

rotation and unit operation for generator and associated equipment.

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

equipment.

K. Remove and replace malfunctioning units and [retest] [reinspect] as specified above.

L. Retest: Correct deficiencies identified by tests and observations and retest until specified

requirements are met.

M. 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.

N. Infrared Scanning: After Substantial Completion, but not more than 60 days after final acceptance,

perform an infrared scan of each power wiring termination and each bus connection while running



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with maximum load. Remove all access panels so terminations and connections are accessible to

portable scanner.

1. Follow-up Infrared Scanning: Perform an additional follow-up infrared scan 11 months after

date of Substantial Completion.

2. Instrument: Use an infrared scanning device designed to measure temperature or to detect

significant deviations from normal values. Provide calibration record for device.

3. Record of Infrared Scanning: Prepare a certified report that identifies terminations and

connections checked and that describes scanning results. Include notation of deficiencies

detected, remedial action taken, and observations after remedial action.

3.7 MAINTENANCE SERVICE

A. Initial Maintenance Service: Beginning at Substantial Completion, provide [12] <Insert number>

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. Provide parts and supplies same as those used in the manufacture

and installation of original equipment.

3.8 DEMONSTRATION

A. Engage a factory-authorized service representative to train Owner's maintenance personnel to

adjust, operate, and maintain packaged engine generators.

END OF SECTION 26 32 13



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