W912PL21R0003_Amendment0006.pdf

Offers must acknowledge receipt of this amendment prior to the hour and date specified in the solicitation or as amended, by one of the following methods:

(a) By completing items 8 and 15, and returning or (c) By separate letter or telegram which includes a reference to the solicitation and amendment numbers. FAILURE OF YOUR ACKNOWLEDGMENT TO BE RECEIVED AT THE PLACE DESIGNATED FOR THE RECEIPT OF OFFERS PRIOR TO THE HOUR AND DATE SPECIFIED MAY RESULT IN REJECTION OF YOUR OFFER. If by virtue of this amendment your desire to change an offer already submitted, such change may be made by telegram or letter, provided each telegram or letter makes reference to the solicitation and this amendment, and is received prior to the opening hour and date specified.

E. IMPORTANT: Contractor is not, is required to sign this document and return copies to the issuing office.

AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT 1. CONTRACT ID CODE

3. EFFECTIVE DATE 4. REQUISITION/PURCHASE REQ. NO. 5. PROJECT NO. (If applicable)

7. ADMINISTERED BY (If other than Item 6) CODE

STANDARD FORM 30 (REV. 10-83)

Prescribed by GSA FAR (48 CFR) 53.243

FACILITY CODE

9A. AMENDMENT OF SOLICITATION

NO.

9B. DATED (SEE ITEM 11)

10A. MODIFICATION OF CONTRACT/ORDER NO.

10B. DATED (SEE ITEM 13)

11. THIS ITEM ONLY APPLIES TO AMENDMENTS OF SOLICITATIONS

The above numbered solicitation is amended as set forth in Item 14. The hour and date specified for receipt of Offers is extended, is not extended.

12. ACCOUNTING AND APPROPRIATION DATA (If required) copies of the amendment; (b) By acknowledging receipt of this amendment on each copy of the offer submitted;

13. THIS ITEM ONLY APPLIES TO MODIFICATION OF CONTRACTS/ORDERS.

IT MODIFIES THE CONTRACT/ORDER NO. AS DESCRIBED IN ITEM 14.

CHECK ONE A. THIS CHANGE ORDER IS ISSUED PURSUANT TO: (Specify authority) THE CHANGES SET FORTH IN ITEM 14 ARE MADE IN THE CONTRACT ORDER NO.

IN ITEM 10A.

B. THE ABOVE NUMBERED CONTRACT/ORDER IS MODIFIED TO REFLECT THE ADMINISTRATIVE CHANGES (such as changes in paying office, appropriation date, etc.) SET FORTH IN ITEM 14, PURSUANT TO THE AUTHORITY OF FAR 43.103(b).

C. THIS SUPPLEMENTAL AGREEMENT IS ENTERED INTO PURSUANT TO AUTHORITY OF:

D. OTHER (Specify type of modification and authority)

15C. DATE SIGNED

15A. NAME AND TITLE OF SIGNER (Type or print)

16C. DATE SIGNED

16A. NAME AND TITLE OF CONTRACTING OFFICER (Type or print)

PAGE OF PAGES

6. ISSUED BY CODE

8. NAME AND ADDRESS OF CONTRACTOR (No., street, county, State and ZIP Code) (X)

CODE

15B. CONTRACTOR/OFFEROR

(Signature of person authorized to sign)

16B. UNITED STATES OF AMERICA

(Signature of Contracting Officer)

NSN 7540-01-152-8070

Previous edition unusable

2. AMENDMENT/MODIFICATION NO.

14. DESCRIPTION OF AMENDMENT/MODIFICATION (Organized by UCF section headings, including solicitation/contract subject matter where feasible.)

The purpose of this amendment is to is to add the following documents:

USACE, LOS ANGELES DISTRICT, CESPLCT

CONTRACTING DIVISION

P.O. BOX 532711

LOS ANGELES, CA 90053-2325

W912PL21R0003

04/21/2021

03/10/2021

(See Standard Form 30 Continuation Page)

X

INSTRUCTIONS

Instructions for items other than those that are self-explanatory, are as follows:

Item 1 (Contract ID Code). Insert the contract type identification code that appears in the title block of the contract being modified.

Item 3 (Effective date).

(1)

(2)

(3)

(4)

(5)

For a solicitation amendment, change order, or administrative change, the effective date shall be the issue date of the amendment, change order, or administrative change.

For a supplemental agreement, the effective date shall be the date agreed to by the contracting parties.

For a modification issued as an initial or confirming notice of termination for the convenience of the Government, the effective date and the modification number of the confirming notice shall be the same as the effective date and modification number of the initial notice.

For a modification converting a termination for default to a termination for the convenience of the Government, the effective date shall be the same as the effective date of the termination for default.

For a modification confirming the contacting officer's determination of the amount due in settlement of a contract termination, the effective date shall be the same as the effective date of the initial decision.

(a)

(b)

(c)

(d)

(e)

(f)

Item 6 (Issued By). Insert the name and address of the issuing office. If applicable, insert the appropriate issuing office code in the code block.

Item 8 (Name and Address of Contractor). For modifications to a contract or order, enter the contractor's name, address, and code as shown in the original contract or order, unless changed by this or a previous modification.

Item 9, (Amendment of Solicitation No. - Dated), and 10, (Modification of Contract/Order No. - Dated). Check the appropriate box and in the corresponding blanks insert the number and date of the original solicitation, contract, or order.

Item 12 (Accounting and Appropriation Data).

When appropriate, indicate the impact of the modification on each affected accounting classification by inserting one of the following entries.

(2) Accounting classification Net decrease $

Include subject matter or short title of solicitation/contract where feasible.

Item 16B. The contracting officer's signature is not required on solicitation amendments. The contracting officer's signature is normally affixed last on supplemental agreements.

(i)

NOTE: If there are changes to multiple accounting classifications that cannot be placed in block 12, insert an asterisk and the words "See continuation sheet".

Item 13. Check the appropriate box to indicate the type of modification. Insert in the corresponding blank the authority under which the modification is issued. Check whether or not contractor must sign this document. (See FAR 43.103.)

Item 14 (Description of Amendment/Modification).

Organize amendments or modifications under the appropriate Uniform Contract Format (UCF) section headings from the applicable solicitation or contract. The UCF table of contents, however, shall not be set forth in this document

Indicate the impact of the modification on the overall total contract price by inserting one of the following entries:

(i) Total contract price increased by $

(ii) Total contract price decreased by $

(iii) Total contract price unchanged.

State reason for modification.

When removing, reinstating, or adding funds, identify the contract items and accounting classifications.

(g)

(h)

When the SF 30 is used to reflect a determination by the contracting officer of the amount due in settlement of a contract terminated for the convenience of the Government, the entry in Item 14 of the modification may be limited to --

(i) A reference to the letter determination; and

(ii) A statement of the net amount determined to be due in settlement of the contract.

(1)

(2)

(3)

(4)

(5)

(6)

STANDARD FORM 30 (REV. 10-83) BACK

(1) Accounting classification Net increase $

STANDARD FORM 30 CONTINUATION PAGE:

Specification SECTION 26 35 43

Revised Drawing Sheets:

CP102

C-506 C-509

CS101

C-518

CU102

GC102

CS102

A-111 OVERALL REFLECTED CEILING PLAN

A-112 REFLECTED CEILING PLAN – SHOPS

A-113 REFLECTED CEILING PLAN – OFFICES

SOF Hangar PN 86022 / P2# 469672 Yuma Proving Ground, AZ Certified Final Submission

SECTION 26 35 43

400-HERTZ (HZ) AND 28.5V DC SOLID STATE FREQUENCY CONVERTER

05/11

PART 1 GENERAL

1.1 REFERENCES

The publications listed below form a part of this specification to the extent referenced. The publications are referred to within the text by the basic designation only.

INSTITUTE OF ELECTRICAL AND ELECTRONICS ENGINEERS (IEEE)

IEEE 1159 (2009) Recommended Practice on Monitoring Electric Power Quality

IEEE 519 (2014) Recommended Practices and Requirements for Harmonic Control in Electrical Power Systems

IEEE C2 (2017; Errata 1-2 2017; INT 1 2017) National Electrical Safety Code

IEEE C62.41.1 (2002; R 2008) Guide on the Surges Environment in Low-Voltage (1000 V and Less) AC Power Circuits

IEEE C62.41.2 (2002) Recommended Practice on Characterization of Surges in Low-Voltage (1000 V and Less) AC Power Circuits

NATIONAL ELECTRICAL MANUFACTURERS ASSOCIATION (NEMA)

NEMA 250 (2014) Enclosures for Electrical Equipment (1000 Volts Maximum)

NATIONAL FIRE PROTECTION ASSOCIATION (NFPA)

NFPA 70 (2017; ERTA 1-2 2017; TIA 17-1; TIA 17-2;

TIA 17-3; TIA 17-4; TIA 17-5; TIA 17-6;

TIA 17-7; TIA 17-8; TIA 17-9; TIA 17-10;

TIA 17-11; TIA 17-12; TIA 17-13; TIA

17-14) National Electrical Code

U.S. DEPARTMENT OF DEFENSE (DOD)

MIL-PRF-24021 (1998; Rev K; Notice 1 2014) Electric Power Monitors, External Aircraft

MIL-STD-704 (2004; Rev F; Notice 1 2008; Notice 2 2013) Aircraft Electric Power Characteristics

UNDERWRITERS LABORATORIES (UL)

UL 1012 (2010; Reprint Apr 2016) UL Standard for

SECTION 26 35 43 Page 1 UNCLASSIFIED // FOR OFFICIAL USE ONLY Amendment 0006

Safety Power Units Other than Class 2

UL 1449 (2014; Reprint Jul 2017) UL Standard for Safety Surge Protective Devices

UL 489 (2016) UL Standard for Safety Molded-Case Circuit Breakers, Molded-Case Switches and Circuit-Breaker Enclosures

1.2 GENERAL REQUIREMENTS

Section 26 00 00.00 20 BASIC ELECTRICAL MATERIALS AND METHODS, applies to this section with addition and modifications specified herein.

1.3 SUBMITTALS

Government approval is required for submittals with a "G" designation;

submittals not having a "G" designation are for information only. When used, a designation following the "G" designation identifies the office that will review the submittal for the Government. Submit the following in accordance with Section 01 33 00 SUBMITTAL PROCEDURES:

SD-02 Shop Drawings

Frequency Converter Drawings ; G

SD-03 Product Data

400 Hz Frequency Converter ; G

28 VDC Converter

SD-06 Test Reports

Work Plan ; G

Routine Factory Test Plan ; G

Performance Test Plan ; G

Test Schedule ; G

Routine Factory Tests ; G

SD-07 Certificates

Qualifications of Manufacturer ; G

UL Listing ; G

SD-09 Manufacturer's Field Reports

Initial Inspection and Tests ; G

Performance Tests ; G

Training Syllabus ; G

SD-10 Operation and Maintenance Data

SECTION 26 35 43 Page 2

Frequency Converter , Data Package 5; G

Preliminary Operation and Maintenance Manuals , Data Package 5; G

1.4 QUALITY ASSURANCE

1.4.1 Frequency Converter Drawings

Furnish scaled drawings of enclosure outline including front, top, side views, and overall dimensions. Provide external power and control wiring and cable connections. Provide single line, schematic, and wiring diagrams. Drawings shall include details of input and output circuit breakers, contactors, rectifiers, surge protectors, and control devices.

Drawings shall include conduit entry and exit locations.

1.4.2 Qualifications of Manufacturer

Submit a certification that the manufacturer has a minimum of five (5) years' experience in the design, manufacturing, and testing of 400 Hz solid state frequency converters at the same or equivalent kVA and voltage ratings for direct connection to aircraft electrical loads. When specifications require multiple converters operating in parallel, the manufacturer shall provide specific experience with equal or greater kVA rated converters.

The certification shall state that the manufacturer is experienced in manufacturing and testing solid state converters of an equivalent or greater kVA rating. Experience in manufacturing motor generator sets does not qualify as equivalent. Experience in manufacturing portable engine-driven 400-hertz power units does not qualify as equivalent. The manufacturer shall be experienced in producing units for installation in permanent buildings in environmentally closed spaces or in weatherproof enclosures as applicable. The manufacturer shall also document that converters are designed for connection to non-linear loads typically encountered in the aircraft and shipbuilding industries. The manufacturer shall furnish documented experience with converters in various environmental conditions including exterior flight line, hangar, and environmentally enclosed spaces within buildings.

1.4.3 Work Plan

Submit a written schedule of dates of routine and special factory tests, installation, field tests, and operator training for the converter system. Furnish a list of instrumentation equipment for factory and field test reports.

1.4.4 Routine Factory Test Plan

Submit 7 copies of test plans and procedures at least 21 calendar days prior to the tests being conducted. Provide detailed description of test procedures, including test equipment and setups, to be used to ensure the converter meets the performance specification and explain the test methods to be used. As a minimum, the test procedures shall include the tests required under the paragraph ROUTINE FACTORY TESTS.

1.4.5 Performance Test Plan

Submit 7 copies of test plans and procedures at least 15 calendar days

SECTION 26 35 43 Page 3 prior to the start of field tests. Provide detailed description and dates and times scheduled for performance of tests, and detailed description of test procedures, including test equipment (list make and model and provide functional description of the test instruments and accessories) and setups of the tests to be conducted to ensure the converter meets the performance specification. Explain the test methods to be used. As a minimum, the test procedures shall include the tests required under the paragraph FIELD QUALITY CONTROL. Test reports shall include power quality measurement data collected in accordance with IEEE 1159 .

1.4.6 UL Listing

Submit with the initial submittal to verify qualification of manufacturer. Frequency converter shall be identified with a UL or nationally recognized testing laboratory (NRTL) label prior to shipping.

1.4.6.1 Currently Listed Products

Submit UL or NRTL certification or UL file number for the actual frequency converter to be shipped.

1.4.6.2 Proposed Listed Products

Submit UL or NRTL certification or UL file number for same or similar rating or product size range of like design unit.

1.4.7 Routine Factory Tests Report

Submit within 45calendar days after completion of tests. Receive approval of test prior to shipping unit. Certify tests were conducted on each converter in accordance with the requirements set forth in paragraph ROUTINE FACTORY TESTS and certify converter satisfactorily operated within specified limits. Report shall include copies of the test procedures, test data, and results.

1.4.8 Performance Tests Report

Submit report of test results as specified by paragraph FIELD QUALITY CONTROL within 5calendar days after completion of tests. Certify tests were conducted on each converter in accordance with the paragraph FIELD QUALITY CONTROL and certify converter satisfactorily operated within specified limits. Report shall include copies of the test procedures, test data, and results.

1.5 MAINTENANCE

1.5.1 Operation and Maintenance Manuals

Submit frequency converter operation and maintenance manuals in accordance with Section 01 78 23 OPERATION AND MAINTENANCE DATA.

1.5.1.1 Additions to Operation and Maintenance Manuals

In addition to requirements of Data Package 5, include the following on the actual frequency converter provided:

a. A "one-line diagram" from service entrance to 400 Hz utilization panel or point.

SECTION 26 35 43 Page 4

b. A weatherproof, tear-resistant plastic data sheet with operating instructions for each unit including startup and shutdown procedures.

c. Routine and field acceptance test reports.

d. UL or NRTL certification or UL file number.

1.5.1.2 Preliminary Operation and Maintenance Manuals

Prior to scheduling Field Performance Tests, 2 copies of a Preliminary Operation and Maintenance Manual must be submitted to and approved by the Contracting Officer.

1.5.1.3 Extra Material

Furnish recommended manufacturer's spare parts list and schedule of prices for each type of converter and other equipment specified in this section.

This list shall include the following:

a. Power semi-conductors

b. Power filter capacitors

c. Plug-in logic cards

d. Output switching modules

e. Fuses

f. Indicator lamp/LED

g. Ventilation system filters

PART 2 PRODUCTS

2.1 FREQUENCY CONVERTERFREQUENCY CONVERTERS

2.1.1 400 Hz FREQUENCY CONVERTER

Provide frequency converter consisting of modular construction solid-state components for 60 to 400 Hz conversion, input/output devices, and ancillary control devices. Frequency converter shall be a standard product of the manufacturer and shall be the manufacturer's latest design that complies with the specification requirements. The 400 Hz frequency converters provided under this contract shall be products of the same manufacturer. The unit shall have a calculated MTBF exceeding 24,000 hours as calculated when the converter is provided with yearly servicing and maintenance. The converter shall be UL or third party listed to comply with UL 1012 . Circuit breakers operating at 400 Hz shall be designed and UL tested for 60 Hz operation and derated for 400 Hz operation. Provide startup and shutdown instructions posted on the front of the unit using engraved plastic plate. Provide a plastic encapsulated schematic diagram attached to the inside of the unit in clear view of maintenance personnel.

2.1.2 28 VDC CONVERTER

Provide DC Converter consisting of modular construction solid-state

SECTION 26 35 43 Page 5 components for 60Hz to DC conversion, input/output devices, and ancillary control devices. DC converter shall be a standard product of the manufacturer and shall be the manufacturer's latest design that complies with the specification requirements. The DC converters provided under this contract shall be products of the same manufacturer as the the 400 Hertz Frequency Converters above. The unit shall have a calculated MTBF exceeding 24,000 hours as calculated when the converter is provided with yearly servicing and maintenance. The converter shall be UL or third party listed to comply with UL 1012. Provide startup and shutdown instruction posted on the front of teh unit using engraved plastic plate.

Provide a plastic encapsulated schematic diagram attached to the inside of the unit in clear view of maintenance personnel.

Provide frequency converter consisting of modular construction solid-state components for 60 to 400 Hz conversion, input/output devices, and ancillary control devices. Frequency converter shall be a standard product of the manufacturer and shall be the manufacturer's latest design that complies with the specification requirements. The 400 Hz frequency converters provided under this contract shall be products of the same manufacturer. The unit shall have a calculated MTBF exceeding 24,000 hours as calculated when the converter is provided with yearly servicing and maintenance. The converter shall be UL or third party listed to comply with UL 1012 . Circuit breakers operating at 400 Hz shall be designed and UL tested for 60 Hz operation and derated for 400 Hz operation. Provide startup and shutdown instructions posted on the front of the unit using engraved plastic plate. Provide a plastic encapsulated schematic diagram attached to the inside of the unit in clear view of maintenance personnel.

2.1.3 Electrical Characteristics

2.1.3.1 Input Voltage

480Y/277V, three phase, four wire, grounded, 60Hz. Converter shall provide rated output voltage when input voltage is varied plus or minus 10 percent. Input neutral currents shall not exceed 21 percent of any individual phase current at no load and at full load.

2.1.3.2 Input Power Factor

Between 0.8 lagging and unity, under all conditions of steady state line and load variations specified herein.

2.1.3.3 Surge Protection

The converter shall be capable of sustaining an input surge described in and tested in accordance with UL 1449 , and IEEE C62.41.1 and IEEE C62.41.2 , Location Category B, and continue to operate with no alarms within the specified tolerance.

2.1.3.4 Inrush Current

The inrush current shall not exceed 100 percent of the rated full load input current. Inrush current limitation is based on a frequency converter that does not require a transformer at the input to the unit.

Should the contractor choose to provide a frequency converter with a transformer at the input to the unit, the contractor shall be responsible for increasing the size of the upstream feeder breaker(s) and increasing

SECTION 26 35 43 Page 6 the size of conductors and raceways in accordance with NFPA 70.

2.1.3.5 Input Current Distortion

Input current THD shall not exceed 5-percent of the fundamental with nominal input voltage at full load. Individual harmonic content shall not exceed 3-percent of the fundamental.

2.1.3.6 Output Voltage

200Y/115 V, three phase, 400 Hz, groundedsystem. Adjustable to plus or minus 10 percent of the rated voltage. The limits overvoltage and undervoltage shall be as defined in MIL-STD-704 . The phase rotation of the output voltage shall be clockwise sequence of A-B-C. Converters shall be designed for compatibility with ship and aircraft power monitors complying with MIL-PRF-24021 .

2.1.3.7 Power Output

90 kVA at 0.8 power factor lagging.

2.1.3.8 Load Range

Operate into a linear load with a power factor between 0.5 lagging and 0.8 leading and into a non-linear load with not less than 15 percent current THD, composed of not less than 6 percent of the 3rd harmonic and not less than 7 percent of the 5th harmonic.

2.1.3.9 Efficiency

a. 400 HZ Frequency Converter

The 90 kVA units shall have a minimum efficiency of 87 at 50 percent load and 91 at 100 percent load. For a frequency converter that requires a transformer at the input to the unit, reduce the specified efficiencies by 2 percent.

b. 28.5 VDC Converter

The DC Converter shall have a minimum efficiency of 87 at 50 percent and 100 percent of load.

2.1.3.10 No Load Input Losses

The frequency converter shall have no-load input losses no greater than 7 percent of the output kW rating. For a frequency converter that requires a transformer at the input to the unit, increase the specified no load input losses by 2 percent.

2.1.3.11 Overload

Satisfactory overload operating time is based on no more than one overload in any 4 consecutive hours of operation:

a. 400 Hz Frequency Converter

SECTION 26 35 43 Page 7

Percent of Full Load Satisfactory Operating Time

110 percent 60 minutes

125 percent 5 minutes

150 percent 2 minutes

200 percent 20 seconds

After minimum operating time is achieved, unit shall interrupt output power. Unit shall be capable of sustaining the overload without damage until the protective device interrupts the overload.

b. 28.5 VDC Converter

1. V < 20V DC for more than 4 seconds

2. V > 32V DC for more than 4 seconds

3. V > 40V DC for more than 150 milliseconds

2.1.3.12 Short Circuit

When a bolted line-to-ground fault, a bolted line-to-line fault, or a bolted three phase fault is applied to the unit, unit shall be capable of sustaining the short circuit current without damage until the protective device interrupts the fault.

2.1.3.13 Output Voltage THD

a. Balanced load:

(1) Output voltage THD: Not to exceed 3 percent line-to-line and line-to-neutral for linear loads as specified in the paragraph

LOAD RANGE.

(2) Output voltage THD: Not to exceed 5 percent line-to-line and line-to-neutral for non-linear loads as specified in the paragraph

LOAD RANGE.

(3) Maximum single harmonic distortion: Not to exceed 2 percent of the fundamental at the nominal voltage for linear loads as specified in the paragraph LOAD RANGE.

(4) Maximum single harmonic distortion: Not to exceed 3 percent of the fundamental at the nominal voltage for non-linear loads as specified in the paragraph LOAD RANGE.

b. Unbalanced load: Output voltage THD not to exceed 4 percent, line-to-neutral with 15 percent unbalanced linear load.

2.1.3.14 Output Voltage Amplitude Modulation

Output voltage amplitude modulation shall not exceed 1/2 percent of nominal voltage at no load to full load.

SECTION 26 35 43 Page 8

2.1.3.15 400 Hz Frequency Converter Frequency Stability

Control output frequency of the 400 Hz converter within plus or minus 0.5 percent for all operating conditions, including maximum and minimum specified input voltages, ambient temperature and relative humidity. The frequency regulation shall operate independent of supply frequency and load changes.

2.1.3.16 400 Hz Frequency Converter Phase Angle Regulation

Displacement angle between adjacent voltage phases shall be 120 degrees plus or minus 2 degrees with balanced load and plus or minus 4 degrees with three phase 15 percent unbalanced load. A 15 percent unbalanced load is defined as:

a. Phase A at full rated single phase load.

b. Phase B at 85 percent of Phase A.

c. Phase C at 85 percent of Phase A.

2.1.3.17 Transient Output Voltage Recovery

2.1.3.17 28.5 VDC Converter Output Voltage Characteristics

Output voltage shall be adjustable from 19-33 V DC with an output current of 0 - 600 A continuous with a maximum peak current of 2400A

a. Output Voltage shall be rated at +/- 1 percent of nominal under all conditions of line, load, and temperature.

b. Output Voltage Regulation shall be less than 0.5% and shall recover to the steady state condition in accordance with ISO specification 6858

c. Output Voltage Ripple shall not exceed 2%

d. Current Limit shall be adjustable from 400A to 2400A in 200A steps.

2.1.4 Environmental Rating

The converter shall operate from no load to rated full load under the following conditions:

a. Ambient temperatures ranging from 0 degrees C to 55 degrees C.

b. Relative humidity from 0 to 95 percent noncondensing.

c. Ambient pressures from sea level to 915 meters 3,000feet .

2.1.5 Monitoring and Control Panel

Provide converter with a control panel that is equipped with the following controls, indicators, instrumentation, data logging, diagnostics, and alarm functions.

2.1.5.1 Controls

a. Start/stop pushbutton.

SECTION 26 35 43 Page 9

b. Lamp/light emitting diode (LED) test - A push-to-test button or switch to test indicator lamps/LEDs.

c. Alarm reset.

d. Emergency power off - A separate pushbutton for emergency power off.

e. Circuit breaker.

f. Output contactor ON/OFF

g. Output voltage adjust.

2.1.5.2 Indicators

a. Input power available - Lamp/LED to indicate that the supply voltage is available.

b. Output power On/Off - (2) Separate lamps/LEDs, one for each output clearly labeled to indicate that the converter output voltage is available.

c. System alarm - Lamp/LED to indicate that a fault has been detected.

This indicator shall be latched in the "ON" position whenever an alarm condition described in paragraph ALARM ANNUNCIATOR, is detected and shall remain "ON" until the alarm reset pushbutton is pressed.

d. Indicating lamp/LED to indicate that the alarm silence switch is in the disable position.

e. Elapsed time meter (hours)

f. Output contactor "ON". Aircraft interlock bypass - Lamp/LED to indicate that the Aircraft Interlock has been bypassed.

2.1.5.3 Digital Instrumentation

Provide true rms, plus/minus one percent accuracy, microprocessor-based meter with a simultaneous three-line LCD display

Provide a digital display that has, at a minimum, the following functions:

a. Output phase-to-phase voltage.

b. Output phase-to-neutral voltage.

c. Output phase current.

d. Output neutral current.

e. Output frequency.

2.1.5.4 Alarm Annunciator

The unit shall be capable of detecting and displaying the following abnormal conditions:

a. Input overvoltage.

SECTION 26 35 43 Page 10

b. Input undervoltage.

c. Output undervoltage.

d. Output overvoltage.

e. Output overload.

f. System alarm.

g. Control logic failure.

h. Overtemperature.

i. Logic power supply failure.

2.1.6 Input/Output Devices

Provide fully-rated, three-pole, UL approved devices for control of 60 Hz input and 400 Hz output from the converter. Devices and cables operating at 400 Hz shall be derated in accordance with IEEE 519 .

2.1.6.1 Circuit Breaker

Conform to requirements of UL 489 . Units operating at 400 Hz shall be derated for 400 Hz operation.

2.1.6.2 Input Circuit Breaker

Provide converter with a UL listed input circuit breaker as an integral part of the converter. Breaker shall be operable from the front of the converter. Breaker shall have a short-circuit current rating of 65,000 amperes symmetrical minimum.

2.1.6.3 Output Contactor

Provide converter output with an automatic magnetically-held contactor with interlock circuit. Output contactor shall be of sufficient capacity to handle rated load, overload, and available short circuit current.

Contactor shall open when any circuit identified in the paragraph PROTECTIVE CONTROL causes the system to shut down. Output contactor shall be electrically interlocked with ON/OFF circuitry so that when the frequency converter is shut down, the contactor shall open immediately and remain open.

2.1.6.4 Output Circuit Breaker

Provide converter output with a non-automatic manual circuit breaker with appropriate frame size and a shunt trip coil derated for 400 Hz operation. Circuit breaker shall be tripped by the unit's OFF circuit local or remotely activated and when any circuit identified in the paragraph PROTECTIVE CONTROL causes the system to shut down. Output breaker shall be operable from the front of the unit.

2.1.6.5 Aircraft Interlock Circuit

Interlock circuit shall determine the presence or absence of the 28 VDC feedback signal from the aircraft. Interlock circuit shall not allow the output disconnect to close if the 28 VDC signal is not present. If the

SECTION 26 35 43 Page 11 output disconnect is closed when the 28 VDC is lost, the disconnect shall open within 2 seconds. Converter shall contain terminal block points for the connection of two 12 AWG wire from the aircraft cable assembly for the interlock circuit. Interlock circuit shall not draw more than 20 milliamperes from the aircraft's 28 VDC circuit. For testing purposes, provide a switch inside the converter with two positions:

a. Normal - For aircraft loads.

b. Bypass - For testing with dummy load or no load, or for use with aircraft with no 28 VDC.

2.1.7 Protective Controls

Provide circuitry for the following protective controls.

a. Input undervoltage.

b. Input overvoltage.

c. Loss of phase.

d. Loss of input power.

e. Door interlock - When any access door is opened, the interlock circuitry shall open the 60 Hz input device and not allow the input device to close. For maintenance purposes, provide a bypass switch to defeat the interlock circuitry.

f. Output overvoltage - Protect by tripping output devices for instantaneous overvoltage of 30 percent or more and for 10 to 30 percent overvoltage lasting more than 0.25 second.

g. Output undervoltage - Protect by preventing the closing of the output disconnect until the output voltage is 95 percent of the rated output.

If, after closing, the voltage decreases to below 90 percent for longer than 5 seconds, provide relaying to trip output devices utilizing a field-adjustable time-delayed circuit with a range of 4 to 10 seconds.

h. Output frequency - Protect by tripping output devices for frequency change in excess of plus or minus 5 percent of the rated output frequency (400 HZ).

i. Output overload.

j. Converter overtemperature protection.

k. Capability of utilizing cable insertion circuits (such as Split-C or 90% insertion switches) to prevent the closing of the output contactor/circuit breaker when the output cable is not fully inserted into the aircraft power receptacle .

2.1.8 Automatic Line Drop Compensation

a. 400 Hz Frequency Converter

Provide automatic line drop compensation - 0 to 7 percent adjustable internally.

SECTION 26 35 43 Page 12

b. 28.5 VDC Converter

Provide automatic line drop compensation, adjustable from 0 to 3 V

2.1.9 Auto Restart

After a total input power outage the unit shall be capable of automatically restarting and re-energizing loads upon restoration of normal power. Provide units with a manual/auto restart switch. If this requirement requires a backup battery power supply this shall be provided. When interlock circuit has been interrupted or when interlock is in the maintenance position manual restart, the system should not restart.

2.1.10 Built-In Test Equipment

Frequency converter shall include built-in test equipment which monitors both primary circuits and protection circuits of the unit. Provide visual indication to assist diagnosis of unit failures to a modular level.

Provide visual indication of converter status using cabinet mounted light emitting diodes.

2.1.11 Acoustical Noise

Maximum continuous acoustical noise level shall be 68 dBa (A weighted scale).

2.1.12 Assembly Construction

Provide enclosures suitable for indoor environments in accordance with NEMA 250, Type l. Arrange to provide required louvers, cooling air, entry and exit provisions for equipment within enclosures. Construct unit(s) so that components, with the exception of control and monitoring components, are totally enclosed within the enclosure. Electronic circuits including power circuits shall be modular construction readily accessible for maintenance, repair and module replacement from the exterior of the enclosure. Provide permanent identification tags for wiring. Uniquely identify each wire. Use the same identification system in the wiring diagrams in the Operation and Maintenance Manual. Provide each enclosure with a finish coat over a substrate which has been provided with a rust inhibiting treatment.

2.1.13 Nameplates

As specified in Section 26 00 00.00 20 BASIC ELECTRICAL MATERIALS AND

METHODS.

2.2 SOURCE QUALITY CONTROL

2.2.1 Converter Test Schedule

The Government reserves the right to witness tests. Provide frequency converter test schedule for tests to be performed at the manufacturer's test facility. Submit required test schedule and location, and notify the Contracting Officer 30 calendar days before scheduled test date. Notify Contracting Officer 15 calendar days in advance of changes to scheduled date.

SECTION 26 35 43 Page 13

Test Instrument Calibration.

a. The manufacturer shall have a calibration program which assures that all applicable test instruments are maintained within rated accuracy.

b. The accuracy shall be directly traceable to the National Institute of Standards and Technology.

c. Instrument calibration frequency schedule shall not exceed 12 months for both test floor instruments and leased specialty equipment.

d. Dated calibration labels shall be visible on all test equipment.

e. Calibrating standard shall be of higher accuracy than that of the instrument tested.

f. Keep up-to-date records that indicate dates and test results of instruments calibrated or tested. For instruments calibrated by the manufacturer on a routine basis, in lieu of third party calibration, include the following:

(1) Maintain up-to-date instrument calibration instructions and procedures for each test instrument.

(2) Identify the third party/laboratory calibrated instrument to verify that calibrating standard is met.

2.2.2 Routine Factory Tests

Routine tests shall be performed by the manufacturer on each of the actual frequency converter(s) prepared for this project to ensure that the design performance is maintained in production. Submit test reports, by serial number and receive approval before delivery of equipment to the project site.

For tests which require full load, use 1.0 power factor unless otherwise noted. All measurements shall be true RMS measurements. Measurements shall be obtained in accordance with IEEE 1159 . Tests shall include the following:

a. Input current and power factor: Operate converter at low, nominal and high input voltage at full load. Measure and record input voltage, input power factor and input current in each phase .

b. Output voltage, output voltage THD, output current, output power factor, and voltage regulation: Operate converter at nominal input voltage for:

(1) 50 percent of rated capacity with 0.8 lagging power factor linear load.

(2) 100 percent of rated capacity with 0.5 lagging power factor, 0.8 lagging power factor, 1.0 power factor, and 0.8 leading power factor linear loads.

(3) 50 percent of rated capacity with the non-linear load as specified in the paragraph LOAD RANGE.

SECTION 26 35 43 Page 14

(4) 100 percent of rated capacity at low and high input voltage.

(5) 100 percent of rated capacity with the non-linear load as specified in the paragraph LOAD RANGE.

Operate for not less than 10 minutes at each test condition in (1), (2), (3) and (4) above and not less than 30 minutes at test condition in (5) above. Monitor and record output voltage, output voltage THD, output current, output current waveform, output power factor and frequency at the beginning and end of each test condition. Monitor and record output voltage single harmonic distortion for each test condition in (2) and (5) above at the beginning and end of each test condition. Verify output remains within specified regulation limits.

c. Efficiency: Operate at nominal input voltage at half load and full load at 1.0 power factor. Measure and record input voltage, input current, input power factor, output voltage, output current, and output power factor. Calculate the unit efficiency.

d. No load losses: Operate at no load and nominal input voltage.

Measure and record input voltage, input current, input power, input power factor, and output voltage.

e. Burn-in Test: Before delivery, burn-in all units under full load conditions for at least 24hours. Burn-in test shall be performed with the converter enclosure doors closed and all ventilation in the final operating condition.

f. Include harmonic frequency spectrum analysis depicting Harmonic Order and Harmonic Magnitude at the unit's input and output terminals during full load THD test in test reports.

g. Automatic line drop compensation: Operate converter at nominal voltage at:

(1) No-load.

(2) 50 percent of rated capacity with a 0.8 lagging power factor linear load.

(3) 50 percent of rated capacity with the specified non-linear load.

(4) 100 percent of rated capacity with a 0.8 lagging power factor linear load.

(5) 100 percent of rated capacity with the specified non-linear load.

Loads shall be connected to the converter with the specified aircraft power cable assembly. No adjustments to the frequency converter shall be allowed between load tests. Monitor and record output voltage at the load end of the cable. Verify specified performance of the line drop compensation.

PART 3 EXECUTION

3.1 INSTALLATION

Install products to operate at 400 Hz and 28.5 VDC in the same manner as

SECTION 26 35 43 Page 15 specified in other sections of this specification for products operating at 60 Hz, unless indicated or specified otherwise. Conform to the requirements of NFPA 70 and IEEE C2 and to manufacturer's instructions and recommendations.

3.1.1 Equipment

3.1.1.1 Floor Mounted

Provide proper floor mounting channels and install in accordance with the manufacturer's drawings and instructions and as indicated. Align, level, and bolt or weld units to channels to allow easy withdrawal or insertion of removable components and to permit proper operation and maintenance of equipment.

3.1.2 Grounding

In accordance with NFPA 70 and as specified in Section 26 20 00 INTERIOR

DISTRIBUTION SYSTEM.

3.1.3 Wiring and Conduit

3.1.3.1 Building Wiring

Provide Type XHHW or THHN with stranded copper conductors wiring for 400 Hz circuits. Provide wiring for 400 Hz circuits in non-magnetic conduit, aluminum or PVC. Provide wiring and conduit for 60 Hz circuits as specified in Section 26 20 00 , INTERIOR DISTRIBUTION SYSTEM .

3.1.3.2 Conduit

Use aluminum conduit for exposed feeders. Do not install aluminum conduit underground or encased in concrete. Use aluminum fittings and boxes with aluminum conduit. For underground or concrete encasement use PVC.

3.1.4 Manufacturer's Representative

The manufacturer's representative shall place the system in operation and make necessary adjustments to ensure optimum operation of the equipment.

The manufacturer's representative shall have at least 2 years of practical experience in the installation and testing of 400 Hz solid state frequency converters.

3.2 FIELD QUALITY CONTROL

3.2.1 Instruments

Provide test instruments capable of measuring and recording or displaying test data at a higher resolution and greater accuracy than specified for the converter's performance. The test instruments used in the field tests shall have current valid calibration stickers issued by an approved calibration laboratory. Verify calibration and adjustments of converter instruments provided prior to field tests. Instruments shall be calibrated for 400 Hz operation when measuring 400 Hz signals.

3.2.2 Performance of Acceptance Checks and Tests

Perform field tests and conduct inspections. Provide labor, equipment tests instruments, and incidentals required for the tests including load

SECTION 26 35 43 Page 16 banks, except the Government will furnish electricity. For all electrical load tests, use 1.0 power factor.

Perform in accordance with the manufacturer's recommendations and include the following visual and mechanical inspections and electrical tests.

3.2.3 Initial Inspection and Tests

a. Compare equipment nameplate information with specifications and approved shop drawings.

b. Inspect physical and mechanical condition.

c. Inspect all bolted electrical connections for high resistance using low-resistance ohmmeter, verifying tightness of accessible bolted electrical connections by calibrated torque-wrench method, or performing thermographic survey.

d. Perform specific inspections and mechanical tests as recommended by manufacturer.

e. Verify correct equipment grounding.

f. Perform resistance measurements through all bolted connections with low-resistance ohmmeter, if applicable.

3.2.4 Performance Tests

Conduct converter performance tests under the supervision of the manufacturer's representative. Successfully complete the preliminary operation, control and protective devices check prior to performing load and transient tests. If the converter fails to operate within the specified limits during any of the performance tests the Contractor shall discontinue the test and shall make necessary repairs to correct the failure and restart testing of the converter.

3.2.4.1 Preliminary Operation

Inspect the converter and make adjustments necessary to assure proper operation in accordance with the manufacturer's instructions. Operate frequency converter at 0, 25, 50, 75, and 100 percent of rated full load.

Measure and record the output voltage, current, frequency, and THD at each load. Calculate output voltage regulation. Verify converter is operating within specified limits at each load level.

3.2.4.2 Control and Protective Device Checks

Operate each control, switch, input/output device that is capable of being operated manually a minimum of three times, demonstrating satisfactory operation each time. Perform operation test on each protective device to ensure that devices functions properly. After each operation measure and record the converter output frequency, voltage and current. Verify converter is operating within specified limits.

3.2.4.3 Load Test

Operate each unit continuously a minimum of 2 hours at 100 percent rated load. Measure and record the converter output frequency, voltage and current. Verify converter is operating within specified limits. Load

SECTION 26 35 43 Page 17 test shall be performed with the converter doors closed.

3.2.4.4 Transient Tests

Transient recovery: Operate at the following load steps: 0 to 100 percent, 0 to 50 percent, 100 to 0 percent, and 50 to 0 percent. Provide recordings or displays of voltage and frequency during each transient test, and indicate on the recordings and displays the time intervals and acceptable limits for voltage and frequency. Repeat each transient test three times, record the results of each test. Verify converter is operating within specified limits.

3.2.4.5 Harmonic Distortion Tests

Perform output voltage harmonic distortion tests at the output of the converter terminals at 0 percent load and 100 percent load at unity power factor. The Contractor shall provide test equipment and instrumentation required for the tests. Tests shall be conducted with a distortion analyzer with test leads within 3 feet of the frequency converter's output terminals. Test data shall include total harmonic distortion amplitudes of all individual harmonics presented in a spectrum analysis format up to the 37th order.

3.2.4.6 Automatic Line Drop Compensation

Conduct automatic line drop compensation tests on each converter with the load connected to the converter with the specified aircraft power cable assembly. Operate each converter at no load, 50 percent and 100 percent of the rated capacity. No adjustments to the frequency converter shall be allowed between load tests. Monitor and record output voltage at the load end of the cable. Verify specified performance of the line drop compensation.

3.2.5 Grounding System

Inspect ground system for compliance with contract plans and specifications.

3.2.6 Follow-up Verification

Upon completion of acceptance checks and tests, the Contractor shall show by demonstration in service that circuits and devices are in good operating condition and properly performing the intended function. As an exception to requirements stated elsewhere in the contract, the Contracting Officer shall be given 5 working days advance notice of the dates and times of checking and testing.

3.3 DEMONSTRATION

3.3.1 Instructing Government Personnel

Provide field training to Government personnel on the operation and maintenance of the converter provided. Provide field training 2 weeks prior to the scheduled date for field acceptance tests. As a minimum the training shall include 2 hours of instruction on the theory of operation and 4 hours on the repair and maintenance of the converters. The instructor shall be approved by the manufacturer of the unit provided.

Submit training syllabus including each topic of training and a brief outline of each topic to the Contracting Officer at least 4 weeks prior to

SECTION 26 35 43 Page 18 training for approval. Training shall be approved by the Contracting Officer at least 2 weeks in advance. The Government may record, video and audio, the training sessions and use these recordings to train personnel on the operation and maintenance of the converter system. Provide two copies of video or audio tapes, if used in the training sessions, to the Contracting Officer.

-- End of Section --

SECTION 26 35 43 Page 19

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FUEL

FACILITY

PARKING

FUEL

FACILITY

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A

N

K

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A

N

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S

A - EXPANSION JOINT

JOINTS LEGEND

B - CONTRACTION JOINT

C - CONSTRUCTION JOINT

D - CONCRETE TO ASPHALT

E - CONCRETE TO SIDEWALK

A1/C-501

DETAIL/SHEET:

D3/C-501

D5/C-501

D8/C-501

A1/C-507

NOTE: ALL INTERNAL JOINTS NOT LABELED AS

CONSTRUCTION JOINTS (C) SHALL BE

CONTRACTION JOINTS (B)

F - REINFORCED PANEL :

6"x6"xW4xW4 WWM (ALLOW 3" CLEARANCE

FROM CONSTRUCTION JOINTS)

G - CONCRETE TO SOIL/GRASS

H - RIGID CONCRETE PAVEMENT TO

EXISTING FLEXIBLE PAVEMENT (AIRFIELD)

F1/C-502

D7/C-510

A4/C-515

TAXIWAY A

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HANGAR ACCESS APRON

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20 EQUAL SPACES @ 18.5'

4 EQUAL SPACES @ 18.75'

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12 EQUAL SPACES @ 19'

6 EQUAL SPACES @ 17.5'

18.93'

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SECTION A-A

12" #57 STONE

24" Ø

B-B

#6 @ 6" C.C.E.W.

#4 @ 12" V

#4 @ 6" H

#6 @ 12" C.C.E.W.

#4 @ 12" C.C.E.W.

24"Ø MANHOLE

RING & COVER

PLAN

WEIR TOP ELEV. 386.50

6"

INV. 382.91 INV. 382.75

18" HDPE

TO STORAGE

15" HDPE

TO ISOLATOR ROW

RIM 389.90

RIM 389.80

INV. 380.75

8"8'-0"8"

4'-0"4'-0"

2'x3' INLET

FRAME AND GRATE

FRAME AND GRATE

18" HDPE

TO STORAGE

TOP 388.75

15" FROM

CB A-6

INV. 383.25 FROM CB A-2

INV. 384.75 FROM CB A-6

15" HDPE IN

COMPACTION @ 100% MAX. DENSITY

PER ASTM D 1557

15" HDPE

TO ISOLATOR ROW

CURB

15" FROM

CB A-2

ACCEPTABLE FILL MATERIALS: UNDERGROUND CHAMBER SYSTEMS

PLEASE NOTE:

1. THE LISTED AASHTO DESIGNATIONS ARE FOR GRADATIONS ONLY. THE STONE MUST ALSO BE CLEAN, CRUSHED, ANGULAR. FOR EXAMPLE, A SPECIFICATION FOR #4 STONE WOULD STATE: "CLEAN, CRUSHED, ANGULAR NO. 4 (AASHTO M43) STONE".

2. COMPACTION REQUIREMENTS ARE MET FOR 'A' LOCATION MATERIALS WHEN PLACED AND COMPACTED IN 9" (230 mm) (MAX) LIFTS USING TWO FULL COVERAGES WITH A VIBRATORY COMPACTOR.

3. WHERE INFILTRATION SURFACES MAY BE COMPROMISED BY COMPACTION, FOR STANDARD DESIGN LOAD CONDITIONS, A FLAT SURFACE MAY BE ACHIEVED BY RAKING OR DRAGGING WITHOUT COMPACTION

EQUIPMENT.

MATERIAL LOCATION DESCRIPTION

AASHTO MATERIAL

CLASSIFICATIONS

COMPACTION / DENSITY

REQUIREMENT

D

FINAL FILL: FILL MATERIAL FOR LAYER 'D' STARTS

FROM THE TOP OF THE 'C' LAYER TO THE BOTTOM

OF FLEXIBLE PAVEMENT OR UNPAVED FINISHED

GRADE ABOVE. NOTE THAT PAVEMENT SUBBASE

MAY BE PART OF THE 'D' LAYER

ANY SOIL/ROCK MATERIALS, NATIVE SOILS, OR PER

ENGINEER'S PLANS. CHECK PLANS FOR PAVEMENT

SUBGRADE REQUIREMENTS.

N/A

PREPARE PER SITE DESIGN ENGINEER'S PLANS.

PAVED INSTALLATIONS MAY HAVE STRINGENT

MATERIAL AND PREPARATION REQUIREMENTS.

C

INITIAL FILL: FILL MATERIAL FOR LAYER 'C'

STARTS FROM THE TOP OF THE EMBEDMENT

STONE ('B' LAYER) TO 24" (600 mm) ABOVE…