AG-4431-S-10-0020-002 AMENDMENT NO. 002 .pdf

AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT

2. AMENDMENT/MODIFICATION NO

6. ISSUED BY (

USDA-ARS-MSA

I4I EXPEzuMENT STATION ROAD

STONEVILLE. MS 38776

a

ALL PROSPECTIVE BIDDERS

(lfapplicable) other lhan hem 6)

TOR (No., street, county, Stute and ZIP Code) 9A. AMENDMENT OF SOLICITATION NO.

AG-4431-S- 10-00206

98. DATED (SEE ITEM I I)

08t04t2010

1OA. MODIFICATION OF CONTRACT/ORDER NO

1OB. DATED (SEE ITEM 13)

1 1 . IES TO AMENDMENTS OF SOLICITATIONS

f , fn"abovenumberedsol ic i tat ionisamendedasset for th in l teml4. Thehouranddatespeci f iedforreceiptof Offe"

I isextended, X isnotextended.

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

(a) By completing ltems 8 and 15, and returning I copies of the amendment; (b) By acknowledging receipt of this amendment on each copy of the offer submitted; or

(c) By separate letter or telegram which includes a relErence fo 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 lN REJECTION OF YOUR OFFER. lf by virtue of this amendment you desire lo 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.

'12. ACCOUNTING AND APPROPRIATION DATA (tl required)

3. EFFECTIVE DATE

0812s12010

( r ' )

13. THIS ITEM APPLIES ONLY TO MODIFICATIONS OF CONTRACTS/ORDERS,

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

\ r ' (Specili uuhority)

B. THE ABOVE NUMBERED CONTRACT/ORDER lS MODIFIED TO REFLECT THE ADMINISTRATIVE CHANGES (such os changes in paying office, appropriation date,erc.)

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 (Specily type of modification and authoriry)

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

14. DESCRf PTf ON OF AMENDMENT/MODIFICATION (Organized by UCF section headings, including solicitalion/contract subject matter whereJeasible.)

This amendment for solicitation # AG-443 I -S- I 0-0020 is being issued to answer questions resulting from the site visit on August I 9,20 I 0.

All other terms and conditions remain the same.

QUESTION 1: Does the power company own the power poles and lines on the Stoneville Campus?

ANSWER 1: NO, the govemment owns the electrical distribution service on the Stoneville campus.

QUESTION 2: The written specifications on Dodge for this project do not have a Surge Protective Device (SPD) specified. The required SPD is shown on the on-line for a type I SPD on a225A panel. Can you advise if there is a specification or the KA rating required?

ANSWER 2: Please see attached Specification Section 26 43 00 Surqe Protection Devices (SPDs).

15A. NAME AND TITLE OF SIGNER (Typeorprint)

HURONVIRDEN

Contract Specialisl

20, )

PREVIOUS EDITION UNUSABLE

This form was electroni€lly produced by USDA,/ARS/OCIO/ADB.

STANDARD

A. THIS CHANGE ORDER IS ISSUED

IN ITEM 1OA.

RACT ORDER NO.

SIGNED

Except as provided hereirL all terms and conditions of the document referenced in ltem 9A or 10A, as heretofore changed, remains unchanged and in full force and effect

Prescribed by GSA

FAR (48 CFR) 53.243

1 0-83)

26 43 00 - 1

SPECIFICATION 26 43 00

SURGE PROTECTIVE DEVICES (SPDs)

LOW VOLTAGE AC SURGE PROTECTION FOR ELECTRICAL DISTRIBUTION SYSTEMS

PART 1 - GENERAL

1.1 RELATED DOCUMENTS

A. Drawings and general provisions of the Contract, including General and Supplementary Conditions and Divisions 1 Specification sections apply to this section.

1.2 DESCRIPTION

A. Surge Protection Device (SPD) is the description and equipment required for the protection of all AC electrical circuits and electronic equipment from the effects of lightning induced voltages, external switching transients and internally generated switching transients.

1.3 REFERERENCE STANDARDS AND PUBLICATIONS

A. The latest edition of the following standards and publications shall comply to the work of this section:

1. ANSI/IEEE C84.1-1989, American National Standard for Electric Power Systems and Equipment -

Voltage Ratings (60 Hertz)

2. ANSI/IEEE C62.41.1-2002, Guide on the Surge Environment in Low-Voltage AC Power Circuits

3. ANSI/IEEE C62.41.2-2002, Recommended Practice on Characterization of Surges in Low-Voltage AC Power Circuits

4. ANSI/IEEE C62.45-2002, IEEE Recommended Practice on Surge Testing for Equipment Connected to Low-Voltage AC Power Circuits

5. Underwriters Laboratories UL 1449 Third Edition, Standard for Safety – Surge Suppression Devices

6. Underwriters Laboratories, UL 1283, Standard for Safety - Electromagnetic Interference Filters

7. National Fire Protection Association, NFPA 780 - National Electrical Code

8. IEEE Standard 142-1991, IEEE Recommended Practice for Grounding of Industrial and Commercial Power Systems (IEEE Green Book)

9. ANSI/IEEE Standard 141-1999, IEEE Recommended Practice for Electric Power Distribution for Industrial Plants (IEEE Red Book)

10. IEEE Standard 1100-1999, IEEE Recommended Practice for Powering and Grounding Sensitive Electronic Equipment (IEEE Emerald Book)

11. FIPS Pub 94, Federal Information Processing Standards Publication - Guideline on Electrical Power for ADP Installations

12. National Electrical Manufacturer’s Association LS-1, 1992 (NEMA LS-1)

13. MIL Standard 220A Method of Insertion-loss Measurement

14. ISO 9001:2000, Quality Systems - Model for Quality Assurance in Design, Development, Production, Installation and Servicing

26 43 00 - 2

1.4 MANUFACTURER QUALIFICATIONS

A. The manufacturer shall specialize only in SPD and shall have a minimum of 10 years experience in manufacturing SPD.

B. The manufacturer shall submit a written statement indicating that a factory authorized representative inspected the installation. The installing contractor shall submit a checkout memorandum to the manufacturer. The memorandum shall indicate the date the equipment is placed into service and the actual method of installation. Submit three copies to the specifying engineer.

1.5 WARRANTY

A. The SPD and supporting components shall be guaranteed by the manufacturer to be free of defects in material and workmanship for a minimum period of 20 years from the date of substantial completion of service and activation of the system to which the suppressor is attached.

B. An SPD that shows evidence of failure or incorrect operation during the warranty period shall be replaced free of charge. Since “Acts of Nature” or similar statements typically include the threat of lightning to which the SPD’s shall be exposed, any such clause limiting warranty responsibility in the "General Conditions" section of this specification shall not apply to this section. The warranty shall cover the entire device.

C. The installation of SPD’s in or on electrical distribution equipment shall in no way compromise or violate equipment listing, labeling, or warranty of the distribution equipment.

1.6 SUBMITTALS

A. The Surge Suppression Device submittals shall include, but shall not be limited to, the following information:

1. Data for each suppressor type indicating conductor sizes, conductor types and connection configuration and lead lengths.

2. Manufacturer’s certified test data indicating the ability of the product to meet or exceed requirements of this specification.

3. Suppressor manufacturer shall provide certified test data confirming Short Circuit Current Rating

(SCCR) of the SPD(s).

4. UL 1449 clamp voltage documentation

5. Drawings, with dimensions, indicating SPD mounting arrangement and lead length configuration, and mounting arrangement of any optional remote diagnostic equipment and assemblies.

6. List and detail all protection systems such as fuses, disconnecting means and protective materials.

7. SPD wiring, bonding and grounding connections shall be indicated on the wiring diagrams for each system. Include installation details demonstrating mechanical and electrical connections to equipment to be protected.

8. If requested, a sample of each suppressor type shall be submitted for use in testing and evaluation.

26 43 00 - 3

PART 2 - PRODUCTS

2.0 PERFORMANCE

A. GENERAL

1. SPD’s shall be listed in accordance with UL 1449 Third Edition, Standard for Safety, Surge Protective Devices and UL 1283, Standard for Safety, Electromagnetic Interference Filters.

2. The SPD shall protect all modes:

a. A three-phase, four-wire plus ground (wye) voltage system shall have seven discrete suppression circuits: 3-modes (Line-to-Ground), 3-modes (Line-to-Neutral) and 1-mode (Neutral-to-Ground).

Line-to-Neutral-to-Ground is not an acceptable substitute for Line-to-Ground.

3. SPD’s shall use a separate path to building ground; the equipment safety ground is not to be used as a transient ground path.

4. SPD’s shall have a SCCR of 200kA. Fuse ratings shall not be considered in lieu of demonstrated withstand testing of SPD, per NEC 285.6.

5. SPD shall be UL labeled with 20kA I-nominal (I-n) (verifiable at UL.com) for compliance to UL 96A Lightning Protection Master Label and NFPA 780.

6. The SPD circuit construction of the main surge current diversion path shall be MOV (metal-oxide varistors) based. The protection status of device shall be clearly monitored on the front panel of the SPD enclosure.

7. Each SPD shall be provided with a protective disconnecting means in accordance with code requirements.

a) Where SPDs are being furnished for new panels, an integral disconnect switch shall be used, and the SPD shall be directly connected to the panelboard bus.

b) Where SPDs are being furnished for existing panels, a 30A, 3-pole circuit breaker shall be installed in the panelboard to serve the SPD (adjust breaker size and wire size as required for other vendor’s equipment). Where there is no space in the existing panel, provide an SPD with integral disconnect switch, and provide the necessary hardware to connect the SPD to the panelboard bus.

8. Suppressor shall have turn-on and turn-off times of less than one nanosecond.

9. SPD’s shall be constructed using metal-oxide varistor (MOV) based suppression circuits. The SPD shall have a response time of less than one nanosecond with six inches or less of connected lead length for any individual protection mode.

10. The maximum continuous operating voltage (MCOV) of all components shall not be less than 125% for a 120V system and 115% for 220, 240, 277, and 480V systems.

B. SERVICE ENTRANCE PROTECTION

1. Type 1 Devices: The service entrance SPD equipment shall meet or exceed the minimum performance criteria as follows:

26 43 00 - 4

a. The single-impulse surge-current rating shall be a minimum of 240,000 Amperes per phase (120,000 Amperes per mode).

b. UL 1449 Third Edition Voltage Protection Rating for the following configurations shall not exceed the following:

Voltage Configuration L-G L-N N-G

120/208V 700V 700V 700V

277/480V 1200V 1200V 1200V

c. The SPD's pulse life when subjected to an ANSI/IEEE C62.41-1991, Category (20kV-1.2/50µs, 10kA-8/20µs) waveform shall survive a minimum of 10,000 hits or occurrences.

d. Visual indication of proper SPD connection and operation shall be easily viewed on the front panel of the enclosure. The indicator lights shall indicate suppression circuit status, phase status, phase loss and suppression fault.

e. Terminals shall be provided for all of the necessary power and ground connections. Each terminal shall accommodate wire sizes of #10 to #1 AWG.

f. SPD's shall be provided with a set of normally-open/normally-closed Form “C” dry contacts for remote monitoring.

g. SPD's enclosure type shall be rated NEMA 4.

h. SPD’s shall have a diagnostics LCD panel display providing information on phase loss (specific to each phase), percentage of protection for each phase, surge/transient event count, stored cumulative surge/transient event history, technical support information and an audible alarm with a muting function.

PART 3 - EXECUTION

3.1 GENERAL

A. The contractor shall follow the SPD manufacturer’s recommended installation practice as found in the equipment installation instructions.

B. SPD’s shall be of compact design. The mounting position of the SPD shall allow a straight and short lead-length connection between the SPD and the point of connection in the panelboard.

C. The installing contractor shall install the parallel SPD with short and straight conductors as practically possible.

D. Installer may reasonably rearrange breaker locations to ensure short and straightest possible leads to

SPD’s.

E. The installation shall apply to all applicable codes.

3.2 SERVICE ENTRANCE PROTECTION

A. Install one SPD at each utility service entrance location whether indicated on the drawings or not.

B. The SPD's ground shall be bonded to the service entrance ground.

C. Neutral and ground shall be bonded together at service entrance panel locations.

D. Install SPD's according to manufacturer's installation instructions.

END OF SECTION