B.08.03 Amendment 0005 Tech Specs 22R00001.pdf

Little Goose DC System & LV Switchgear Upgrade W912EF22R0001 Amend - 0005

LGA455595DCLVSU

PROJECT TABLE OF CONTENTS

DI VI SI ON 00 - PROCUREMENT AND CONTRACTI NG REQUI REMENTS

00 01 15.00 28 LIST OF DRAWINGS

DI VI SI ON 01 - GENERAL REQUI REMENTS

01 00 00.00 28 GENERAL REQUIREMENTS

01 11 00.00 28 SUMMARY OF WORK

01 11 01.00 28 SUPPLEMENTARY REQUIREMENTS

01 12 16.00 28 WORK SEQUENCE

01 14 00.10 28 PROJECT SITE RESTRICTIONS

01 14 00.90 28 INTEGRATING ANTITERRORISM (AT) AND OPERATIONS SECURITY

(OPSEC)

01 22 00.00 28 MEASUREMENT AND PAYMENT

01 32 01.00 28 PROJECT SCHEDULE

01 33 00 SUBMITTAL PROCEDURES

01 35 29.10 28 GOVERNMENTAL SAFETY REQUIREMENTS

01 42 00 SOURCES FOR REFERENCE PUBLICATIONS

01 45 01.00 28 RESIDENT MANAGEMENT SYSTEM CONTRACTOR MODE (RMS CM)

01 45 04.00 28 CONTRACTOR QUALITY CONTROL

01 51 00.00 28 TEMPORARY UTILITIES

01 55 10.00 28 CONTRACTOR WORK, ACCESS AND STORAGE AREAS

01 57 20.00 28 ENVIRONMENTAL PROTECTION

01 78 00.00 28 CLOSEOUT SUBMITTALS

01 78 23.00 28 OPERATION AND MAINTENANCE DATA

DI VI SI ON 02 - EXI STI NG CONDI TI ONS

02 41 00.00 28 DEMOLITION

02 83 33.12 28 LEAD BASED PAINT (LBP) REMOVAL AND DISPOSAL

DI VI SI ON 03 - CONCRETE

03 60 00.01 28 CONCRETE DEMOLITION, REPAIR OF CONCRETE SURFACES, AND

MINOR EQUIPMENT FOUNDATIONS

DI VI SI ON 06 - WOOD, PLASTI CS, AND COMPOSI TES

06 41 16.00 28 PLASTIC-LAMINATE-CLAD ARCHITECTURAL CABINETS

DI VI SI ON 07 - THERMAL AND MOI STURE PROTECTI ON

07 84 00.00 28 FIRESTOPPING

DI VI SI ON 08 - OPENI NGS

08 11 13.00 28 STEEL DOORS AND FRAMES

08 71 00.00 28 DOOR HARDWARE

DI VI SI ON 09 - FI NI SHES

09 67 23.13 28 EPOXY FLOORING

09 90 00.00 28 PAINTS AND COATINGS

DI VI SI ON 13 - SPECI AL CONSTRUCTI ON

13 48 00.00 26 SEISMIC RESTRAINT FOR MECHANICAL AND ELECTRICAL EQUIPMENT

PROJECT TABLE OF CONTENTS Page 1 Amendment - 0005

DI VI SI ON 22 - PLUMBI NG

22 00 00.00 28 PLUMBING, GENERAL PURPOSE

22 15 13.16 26 COMPRESSED-AIR PIPING, PIPING COMPONENTS, AND VALVES

DI VI SI ON 23 - HEATI NG, VENTI LATI NG, AND AI R CONDI TI ONI NG ( HVAC)

23 00 00.00 28 MECHANICAL GENERAL REQUIREMENTS

23 05 24.00 28 METAL SUPPORTS FOR MECHANICAL SYSTEMS

23 05 93.00 28 TESTING, ADJUSTING, AND BALANCING FOR HVAC

23 30 00.00 28 HVAC AIR DISTRIBUTION

23 34 00.00 28 FANS

DI VI SI ON 25 - I NTEGRATED AUTOMATI ON

25 05 11.00 28 CYBERSECURITY

DI VI SI ON 26 - ELECTRI CAL

26 05 00.00 28 BASIC ELECTRICAL MATERIALS AND METHODS

26 05 13.00 28 MEDIUM-VOLTAGE CABLE

26 05 19.00 28 INSULATED WIRE AND CABLE

26 05 26.00 28 GROUNDING

26 05 36.00 28 CABLE TRAYS FOR ELECTRICAL SYSTEMS

26 08 00.00 28 APPARATUS INSPECTION AND TESTING

26 08 01.00 28 SYSTEMS TESTING AND COMMISSIONING

26 23 10.10 28 480 VOLT SWITCHGEAR AND TRANSFORMERS

26 24 19.00 28 MOTOR CONTROL CENTERS

26 28 00.00 28 SWITCHBOARDS AND PANELBOARDS

26 32 34.00 26 BATTERIES

26 32 36.00 26 BATTERY CHARGERS AND INVERTERS

DI VI SI ON 27 - COMMUNI CATI ONS

27 21 10.00 26 FIBER OPTIC DATA TRANSMISSION SYSTEM

DI VI SI ON 40 - PROCESS I NTERCONNECTI ONS

40 95 00.00 26 PROGRAMMABLE LOGIC CONTROLLER HARDWARE AND PANELS

DI VI SI ON 41 - MATERI AL PROCESSI NG AND HANDLI NG EQUI PMENT

41 22 13.19 26 BATTERY LIFTING DEVICE

-- End of Project Table of Contents --

PROJECT TABLE OF CONTENTS Page 2 Amendment - 0005 g4ecctgh Line Amendment-0005 - Section 26 23 10.10 28

SECTION TABLE OF CONTENTS

DIVISION 26 - ELECTRICAL

SECTION 26 23 10.10 28

480 VOLT SWITCHGEAR AND TRANSFORMERS

PART 1 GENERAL

1.1 SUMMARY

1.2 REFERENCES

1.3 SUBMITTALS

1.4 SWITCHGEAR DRAWINGS AND DATA

1.4.1 Assembly, Detail Drawings and Data

1.4.2 Outline Drawings

1.4.3 Schematic Diagrams, Connection Diagrams and One Line Diagrams

1.5 ARRANGEMENT AND ASSEMBLY

1.5.1 Equipment Arrangement and Coordination

1.5.2 Cable and Conduit Entrances

1.5.3 Device Arrangement

1.6 QUALIFICATIONS

1.7 DELIVERY, STORAGE, AND HANDLING

1.8 MATERIALS AND EQUIPMENT

1.8.1 Standard Products

1.8.2 Corrosion Prevention

1.8.2.1 General

1.8.2.2 Fastenings and Fittings

1.8.2.3 Corrosion-Resisting Materials

1.8.2.4 Corrosion-Resisting Treatments

1.8.2.5 Finish

PART 2 PRODUCTS

2.1 GENERAL REQUIREMENTS

2.2 480 VOLT STATION SERVICE SWITCHGEAR

2.2.1 General Requirements

2.2.2 Switchgear Enclosure And Framework

2.2.3 Device Arrangement

2.2.4 Buses And Connections

2.2.4.1 Ground Bus

2.2.5 Power Circuit Breakers

2.2.5.1 General

2.2.5.2 Main and Bus Tie Circuit Breakers

2.2.5.3 Feeder Air Circuit Breakers

2.2.5.4 Digital Trip Unit

2.2.5.5 Safety Shutters

2.2.5.6 Zone Interlocking

2.2.6 Automatic Bus Transfer

2.2.7 Protective Relays

2.2.8 Test Switches

2.2.9 Fiber Optic Arc Flash Sensors

2.2.10 Wiring

2.2.11 Terminal Blocks

SECTION 26 23 10.10 28 Page 1

2.2.12 Molded-Case Circuit Breakers

2.2.12.1 Trip Units

2.2.12.2 120-Volt and 208-Volt AC Circuits

2.2.12.3 125 Volt DC Circuits

2.2.12.4 480-Volt AC circuits

2.2.13 Nameplates

2.2.14 Remote Racking Device

2.2.15 Remote Control Device

2.3 High Resistance Ground Equipment

2.3.1 Grounding Equipment

2.4 CONTROL SWITCHES

2.4.1 General

2.4.2 Switch Features

2.5 STATION SERVICE TRANSFORMERS

2.5.1 Transformer Bus Connections

2.5.2 Type and Rating

2.5.2.1 Core and Coils

2.5.2.1.1 Enclosure

2.5.3 Incoming Sections

2.5.4 Internal Enclosure Wiring

2.5.5 Control Cabinet

2.5.6 Surge Protection

2.5.7 Ground Bus

2.5.8 Temperature Relay

2.5.9 Foundation

2.6 INDICATING METERS

2.6.1 Ammeters

2.6.2 Voltmeters

2.7 INDICATING LAMP ASSEMBLIES

2.8 INSTRUMENT TRANSFORMERS

2.8.1 General

2.8.2 Voltage Transformers

2.8.3 Current Transformers

2.8.3.1 General

2.8.3.2 Window or Bushing Type Current Transformers

2.8.3.3 Rating

2.8.3.4 Burden Analysis

2.9 KEY INTERLOCKS

2.10 ANNUNCIATION EQUIPMENT

2.11 PAINTING

2.12 ACCESSORIES

2.13 SPARE PARTS

PART 3 EXECUTION

3.1 EQUIPMENT INSTALLATION

3.2 TEMPORARY POWER

3.3 480-VOLT SWITCHGEAR FACTORY INSPECTION AND TESTS

3.3.1 General

3.3.2 Breaker Assembly Tests

3.3.2.1 Assembled Equipment

3.3.2.2 Wiring

3.3.2.3 Breaker Assembly

3.3.2.4 Circuit Breaker

3.3.2.5 Switchgear Assembly

3.4 Instrument Transformer Test

3.5 STATION SERVICE TRANSFORMER TESTS

3.6 FIELD INSPECTION, TESTING AND COMMISSIONING

3.6.1 General

SECTION 26 23 10.10 28 Page 2 Amendment - 0005 g4ecctgh

Amendment-0005 - Section 26 23 10.10 28 - Paragraph 2.5.2

3.6.2 Low Voltage Breakers and Switchgear

3.6.3 Transformer

3.6.4 Protective Relays

3.7 QUALIFICATIONS OF FIELD ENGINEERING SERVICE PERSONNEL

3.8 CONTRACTOR FURNISHED TRAINING OF GOVERNMENT PERSONNEL

3.9 OPERATION AND MAINTENANCE MANUAL

3.10 AS-BUILT DRAWINGS

3.11 FINAL ACCEPTANCE

-- End of Section Table of Contents --

SECTION 26 23 10.10 28 Page 3

THIS PAGE INTENTIONALLY LEFT BLANK

SECTION 26 23 10.10 28 Page 4

SECTION 26 23 10.10 28

480 VOLT SWITCHGEAR AND TRANSFORMERS

PART 1 GENERAL

1.1 SUMMARY

This section specifies the design, fabrication, assembly, wiring, factory testing, delivery FOB Little Goose Dam, installation, and field testing of 480 volt station service switchgear (and transformers). The equipment shall be designed to satisfy the requirements of these specifications and shall incorporate the requirements contained in each of the following sections:

13 48 00.00 26 SEISMIC RESTRAINT FOR MECHANICAL AND ELECTRICAL EQUIPMENT,

26 05 00.00 28 BASIC ELECTRICAL MATERIALS AND METHODS, 26 05 19.00 28

INSULATED WIRE AND CABLE, and 26 08 01.00 28 SYSTEMS TESTING AND

COMMISSIONING.

1.2 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.

AMERICAN NATIONAL STANDARDS INSTITUTE (ANSI)

ANSI C12.1 (2014) Code for Electricity Metering

ANSI C39.1 (1981; R 1992) Requirements for Electrical Analog Indicating Instruments

AMERICAN SOCIETY OF MECHANICAL ENGINEERS (ASME)

ASME B1.1 (2003; R 2008) Unified Inch Screw Threads (UN and UNR Thread Form)

ASME B1.20.1 (2013; R 2018) Pipe Threads, General Purpose (Inch)

ASTM INTERNATIONAL (ASTM)

ASTM A123/A123M (2017) Standard Specification for Zinc (Hot-Dip Galvanized) Coatings on Iron and Steel Products

ASTM A153/A153M (2016) Standard Specification for Zinc Coating (Hot-Dip) on Iron and Steel Hardware

ASTM B187/B187M (2016) Standard Specification for Copper, Bus Bar, Rod and Shapes and General Purpose Rod, Bar and Shapes

SECTION 26 23 10.10 28 Page 5

INSTITUTE OF ELECTRICAL AND ELECTRONICS ENGINEERS (IEEE)

IEEE 1248 (1998; R 2007) Guide for the Commissioning of Electrical Systems in Hydroelectric Power Plants

IEEE C2 (2017) National Electrical Safety Code

IEEE C37.09 (1999; AMD 1 2005; Corr 1 2007; R 2007;

Errata 2007; Amendment B 2011) Standard Test Procedure for AC High-Voltage Circuit Breakers Rated on a Symmetrical Current Basis

IEEE C37.13 (2015) Standard for Low-Voltage AC Power Circuit Breakers Used in Enclosures

IEEE C37.16 (2009) Standard for Preferred Ratings, Related Requirements, and Application Recommendations for Low-Voltage AC (635 V and below) and DC (3200 V and below) Power Circuit Breakers

IEEE C37.17 Standard for Trip Systems for Low - Voltage (1000 V and below) AC and General Purpose (1500 V and below) DC Power Circuit Breakers

IEEE C37.20.1 (2015) Standard for Metal-Enclosed Low-Voltage (1000 Volts and Below, 3200 Vdc and Below) Power Circuit Breaker Switchgear

IEEE C37.90.1 (2012) Standard for Surge Withstand Capability (SWC) Tests for Relays and Relay Systems Associated with Electric Power Apparatus

IEEE C57.12.01 (2015) General Requirements for Dry-Type Distribution and Power Transformers Including Those with Solid-Cast and/or Resin-Encapsulated Windings

IEEE C57.12.91 (2011) Standard Test Code for Dry-Type Distribution and Power Transformers

IEEE C57.13 (2016) Standard Requirements for Instrument Transformers

IEEE C57.13.3 (2014) Guide for Grounding of Instrument Transformer Secondary Circuits and Cases

IEEE C57.32 (2015) Standard for Requirements, Terminology, and Test Procedures for Neutral Grounding Devices

IEEE C62.11 (2012) Standard for Metal-Oxide Surge Arresters for Alternating Current Power Circuits (>1kV)

SECTION 26 23 10.10 28 Page 6

INTERNATIONAL ELECTRICAL TESTING ASSOCIATION (NETA)

NETA ATS (2017; Errata 2017) Standard for Acceptance Testing Specifications for Electrical Power Equipment and Systems

NATIONAL ELECTRICAL MANUFACTURERS ASSOCIATION (NEMA)

NEMA C37.50 (2012) American National Standard for Switchgear--Low-Voltage AC Power Circuit Breakers Used in Enclosures - Test Procedures

NEMA SG 4 (2009; R 2013) Alternating-Current High-Voltage Circuit Breakers

NATIONAL FIRE PROTECTION ASSOCIATION (NFPA)

NFPA 70 (2017) National Electrical Code

UNDERWRITERS LABORATORIES (UL)

UL 44 (2014; Reprint Feb 2015) Thermoset-Insulated Wires and Cables

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

UL 1581 (2001; Reprint Jun 2017) Electrical Wires, Cables, and Flexible Cords

U.S. ARMY CORPS OF ENGINEERS (USACE)

EM 385-1-1 Safety and Health Requirements Manual

The Contractor shall be responsible for complying with the current edition and all changes posted on the web as of the effective date of this solicitation.

1.3 SUBMITTALS

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

submittals having an "I" designation are for information only. When used, a designation following the "G" or "I" designation identifies the office that will review the submittal for the Government. The following shall be submitted in accordance with Section 01 33 00 SUBMITTAL PROCEDURES:

SD-01 Preconstruction Submittals

Submit within 90 days after receipt of notice to proceed:

Work Plan ; G, HDC, EL

Contractor Furnished Training of Government Personnel ; G, HDC, EL

Qualifications of Field Engineering Service Personnel ; G, HDC, EL

SECTION 26 23 10.10 28 Page 7

Temporary Power Plan ; G, HDC, EL

SD-02 Shop Drawings

Submit within 90 days after receipt of notice to proceed:

Assembly, Detail Drawings and Data ; G, HDC, EL

Outline Drawings ; G, HDC, EL

Foundation Detail Drawings ; G, HDC, EL

Submit within 90 days after receipt of notice to proceed:

Schematic Diagrams, Connection Diagrams and One Line Diagrams ; G, HDC, EL

SD-03 Product Data

Submit within 45 days after receipt of Notice To Proceed:

Protective Relays ; G, HDC, EL

Data consisting of manufacturer's Relay Descriptive Literature and Instruction Manuals and include IEEE Device Number Protection Functions available in the relays provided, testing procedures and instructions pertaining to the frequency of calibration, inspection, adjustment, and cleaning.

Submit within 90 days after receipt of notice to proceed:

Infra-Red (IR) Viewing Windows ; G, HDC, EL

Power Circuit Breakers ; G, HDC, EL

Test Switches ; G, HDC, EL

Fiber Optic Arc Flash Sensors ; G, HDC, EL

Wiring ; G, HDC, EL

Terminal Blocks ; G, HDC, EL .

Molded-Case Circuit Breakers ; G, HDC, EL

Nameplates ; G, HDC, EL

Remote Racking Device ; G, HDC, EL

Remote Control Device ; G, HDC, EL

Control Switches ; G, HDC, EL

Station Service Transformers ; G, HDC, EL

Surge Protection ; G, HDC, EL

Temperature Relay ; G, HDC, EL

SECTION 26 23 10.10 28 Page 8

Indicating Meters ; G, HDC, EL

Indicating Lamp Assemblies ; G, HDC, EL

Instrument Transformers ; G, HDC, EL

Painting ; G, HDC, EL

Key Interlocks ; G, HDC, EL

Annunciation Equipment ; G, HDC, EL

Submit within 90 days after receipt of notice to proceed:

Time Current Curves ; G, HDC, EL

Relay Curves for Instrument Transformers ; G, HDC, EL

Accessories and Spare Parts List ; G, HDC, EL

SD-06 Test Reports

Submit within 90 days after receipt of notice to proceed:

Design Test Reports ; G, HDC, EL

Submit no less than 30 days prior to tests:

480-Volt Switchgear Factory Inspection and Tests ; G, HDC, EL

Station Service Transformer Tests ; G, HDC, EL

Factory Test Procedure ; G, HDC, EL

Field Test Procedure ; G, HDC, EL

Submit no later than 30 days after completion of tests:

Factory Inspection and Test Reports ; G, HDC, EL

Submit no later than 10 days after completion of tests:

Field Test Reports ; G, HDC, EL

SD-07 Certificates

Submit no later than 7 days after shipment of protective relays:

Manufacturer's Test Reports ; G, HDC, EL

Submit no later than 14 days prior to delivery of equipment:

Notification of equipment shipment ; G, HDC, EL

Notification of Testing ; G, HDC, EL

Submit within 90 days after receipt of notice to proceed:

Certifications of Seismic Requirements ; G, HDC, EL

SECTION 26 23 10.10 28 Page 9

Certifications of Switchgear and Breakers Design Tests ; G, HDC, EL

Qualifications of Instructor ; G, HDC, EL

Course Outline and Course Material ; G, HDC, EL

SD-10 Operation and Maintenance Data

Operation and Maintenance Manual ; G, HDC, EL

480 Volt Switchgear Information ; G, HDC, EL

SD-11 Closeout Submittals

Submit within 90 days after completion of work:

As-Built Drawings ; G, HDC, EL

a. Circuit Breaker Manufacturer's Installation Drawings and Details.

b. Circuit Breaker Controls and Schematic Diagrams.

1.4 SWITCHGEAR DRAWINGS AND DATA

1.4.1 Assembly, Detail Drawings and Data

Prepare and submit assembly, detail drawings and data to demonstrate that all parts of the equipment will conform to the requirements and intent of the specifications. The drawings and data shall include sectional views of switchgear units including bus and bracing, description of removable elements, all relays and other devices, equipment lists, high resistance ground equipment and nameplate schedules. Drawings shall show coordination with other connected equipment including the transformer and metal enclosed bus indicating full electrical details of the connection.

1.4.2 Outline Drawings

Prepare and submit outline drawings for coordination of equipment and physical location. Drawings shall include the overall dimensions and weights of the equipment; the size and location of conduit and cable entrances; details of provisions for bolting equipment to the floor, walls, and ceilings; the equipment crate sizes and proposed routing to the installation site within the facility.

1.4.3 Schematic Diagrams, Connection Diagrams and One Line Diagrams

Schematic Diagrams, Connection Diagrams and One Line Diagrams shall be submitted indicating the switchgear assembly, complete assembly full line connection diagram, and control logic to demonstrate that the equipment will satisfy the requirements and intent of the specifications. All controls and external connections indicated by the Contract drawings shall be accounted for. Point to point connection wireless wiring diagrams shall show all terminal blocks and connections as seen by the observer.

Provide a space at least three (3) inches below and adjacent to the terminal blocks in which external circuits, conduits or connections may be shown. The wiring diagrams shall be made as seen by an observer of the actual wiring, and shall show all the wiring and devices in the

SECTION 26 23 10.10 28 Page 10 cubicle/sections. Solely using ladder logic or control diagrams to indicate wiring connections is not acceptable. The drawing shall include space for the addition of devices where mounting space exists on the structure. External connection wiring diagrams for control wiring showing exact connections between switchgear and control panels must be submitted for government review before switchgear is wired in the field. Wire names to local control cabinets must be updated to reflect any changes to switchgear cubicle names shown in the contract drawings.

1.5 ARRANGEMENT AND ASSEMBLY

1.5.1 Equipment Arrangement and Coordination

The location and general arrangement of the low-voltage metal-enclosed switchgear assembly and station service transformers is shown on the drawings. Modifications of the equipment arrangement or the equipment device requirements shown shall be subject to approval. The switchgear and transformers shall be designed as a system and adequate coordination between the different manufactures shall be performed to ensure equipment enclosures line up to each other to the extent practical to make a clean smooth appearance. The location of the bus shall be coordinated between the equipment to ensure it lines up at each equipment transition. Where equipment has different dimensions, adequate covers shall be incorporated into the design to fully cover openings and to match equipment outlines.

The switchgear assembly shall be completely assembled, wired and tested at the factory. Transformers may be tested separately, but any controls between the switchgear and transformer should be simulated during testing. After complete assembly, the switchgear group shall be disassembled into sections, for convenience of handling, shipment, and installation.

1.5.2 Cable and Conduit Entrances

Power cables in conduit and cable tray will enter the new switchgear from the top and bottom as shown on the Contract drawings. The preferred arrangement and layout of the switchgear is indicated on the Contract drawings and shall be aligned such that existing embedded conduits will enter the appropriate vertical sections of the switchgear. Bottoms shall be open to the maximum extent practicable to allow for variations in cable entry from existing embedded conduits.

1.5.3 Device Arrangement

The switchgear, breaker and auxiliary equipment arrangement is shown on the drawings. Any proposed deviation from this arrangement shall be submitted to the Contracting Officer for approval. The design of the switchgear and arrangement of devices shall be such that adequate space is provided for inspection and maintenance of wiring, terminals, and devices. Equipment on the rear of the panels shall be so mounted that the studs of the equipment mounted on the front of the panels will be accessible without removing any device. Layout of equipment shall be such to allow maintenance access to all panels and no control switch shall have the centerline of handle above 79 inches off the finished floor when the equipment is installed in its final location.

1.6 QUALIFICATIONS

The manufacturer of the equipment shall have a minimum of five years continuous experience in the design, production and testing of equipment

SECTION 26 23 10.10 28 Page 11 of the same type and rating.

1.7 DELIVERY, STORAGE, AND HANDLING

a. Each shipping section shall be properly matchmarked to facilitate reassembly, and shall be provided with removable lifting channels or eye bolts to facilitate lifting and handling. The equipment shall be shipped as completely assembled and wired as feasible so as to require a minimum of installation work. Any mounted devices such as relays and indicating instruments which cannot withstand the hazards of shipment shall be removed, properly marked with panel number to allow ready reinstallation, and carefully packed and shipped separately.

The switchgear assembly must be capable of fitting through an opening of 96 inches High, 72 inches wide beginning at 6 inches above the floor to the top of the opening, and 68 inches wide from floor level to 6 inches above floor level. All dimensions shall be verified by the Contractor in the field

b. The Contractor shall provide written Notification of equipment shipment to the Government 14 calendar days prior to delivery.

c. Prior to shipment, the switchgear , transformer and any other critical equipment shall be suitably wrapped or otherwise protected from dampness, dust, and physical damage during shipment. Upon delivery, the equipment shall be thoroughly inspected for damage. Any damage shall be reported to the GQAR. Damaged equipment shall be replaced, unless otherwise approved.

d. Method of on-site storage and storage containers will be subject to approval by the Contracting Office. The equipment shall be kept dry and free from precipitation and condensation during storage and installation.

1.8 MATERIALS AND EQUIPMENT

New materials and equipment shall be furnished and any defective material or equipment damaged in the course of installation shall be replaced.

Equipment may only be repaired if approved by the Government. Testing shall be performed to check the installation of and the proper operational functions of the electrical equipment.

1.8.1 Standard Products

Products contained within the equipment shall be standard products that have been in satisfactory use for the intended purpose for at least two years.

1.8.2 Corrosion Prevention

1.8.2.1 General

All equipment shall be protected to prevent deterioration from corrosion.

The general requirements are specified below; however, other corrosion-resisting treatments that are the equivalent of those specified may be used.

1.8.2.2 Fastenings and Fittings

Screws, bolts, nuts, pins, studs, springs, washers and other miscellaneous

SECTION 26 23 10.10 28 Page 12 fasteners and fittings shall be of corrosion-resistant material or shall be treated in an approved manner to render them resistant to corrosion.

All fastenings which are to be exposed directly to the weather shall be of corrosion-resisting material.

1.8.2.3 Corrosion-Resisting Materials

Corrosion-resisting steel, copper, brass, bronze, copper-nickel-copper alloys are acceptable corrosion-resisting materials.

1.8.2.4 Corrosion-Resisting Treatments

Treatments shall be in accordance with ASTM A123/A123M or ASTM A153/A153M .

1.8.2.5 Finish

Final painting shall be done in accordance with paragraph PAINTING.

PART 2 PRODUCTS

2.1 GENERAL REQUIREMENTS

a. The equipment furnished and the work performed under this Contract shall be in conformance with the applicable provisions of ANSI & IEEE standards. The Contractor shall furnish documentation substantiating that the circuit breakers and switchgear have previously satisfied the requirements for design testing in accordance with IEEE and ANSI standards.

b. All materials, components, and equipment shall conform to the requirements of these specifications, shall be free from defects and imperfections, of recent manufacture, and shall have mechanical and electrical properties suitable for the intended use. All materials, components, and equipment not manufactured by the Contractor shall be products of other recognized reputable manufacturers meeting the requirements of subparagraph Qualifications. Insofar as practicable, devices and equipment used for the same or similar services shall be of the same make and type, and shall be interchangeable when of the same rating.

c. The switchgear, power circuit breakers, and transformer shall essentially duplicate the standard published catalog item from the manufacturer and such equipment shall have been in satisfactory service for at least five years.

d. All bolts, studs, machine screws, nuts, and tapped holes shall be in accordance with ASME B1.1 . Threads for sizes 1/4-inch to 1-inch, inclusive, shall be NC or UNC series. The sizes and threads of all conduit and fittings, tubing and fittings, and connecting equipment shall be in accordance with ASME B1.20.1 . Manufacturer's standard thread and construction may be used on small items, which in the opinion of the Contracting Officer, are integrally replaceable, except that threads for external connections to these items shall meet the above requirements.

e. The switchgear will be located indoors within ambient temperature extremes of 0 degrees C to +40 degrees C. The switchgear will be installed at an altitude below 1000 m.

SECTION 26 23 10.10 28 Page 13

2.2 480 VOLT STATION SERVICE SWITCHGEAR

2.2.1 General Requirements

a. Except as otherwise specified or indicated, the design, construction and tests of the switchgear shall conform to the applicable requirements of IEEE C37.13 , and IEEE C37.20.1 . The switchgear will be used to distribute power from two 4,160-480 volt 3-phase, 60-Hz, station service transformers to 480-volt motor control centers and to other station service loads. SQ0, SQ1, and SQ2 switchgear assemblies shall be of the switchgear type with their associated 480V circuit breakers, kirk key interlocks, and automatic transfer switches. SH shall be of the motor control center type with their associated 480V circuit breakers, motor starters, soft starts, and associated equipment.

b. The switchgear assembly shall contain two main bus sections connected by two bus tie circuit breakers. Each main bus section will be connected to a transformer through a main circuit breaker. The two main circuit breakers and the tie circuit breakers shall be electrically operated and will normally be remotely controlled. A second tie breaker shall be provided for maintenance use only.

c. Automatic bus transfer shall be provided as specified in paragraph Automatic Bus Transfer.

d. The switchgear shall have instruments, control accessories, and other equipment mounted on the front panels and inside the switchgear as shown and as specified.

e. Remote racking shall be provided for each breaker.

f. The Contractor shall submit a complete package of the 480 Volt Switchgear Information , to include, but not limited to, complete manufacturer's data sheets, installation and trouble shooting manuals, parts listings, high resistance ground equipment and equipment descriptions for all equipment installed under this Contract.

Manufacturer's data and catalog cuts to demonstrate fully that all parts of the equipment conform to the requirements and intent of the specifications. This shall be submitted at the same time as the drawings, diagrams, and data below.

2.2.2 Switchgear Enclosure And Framework

a. General

The switchgear shall be of the totally-enclosed, free-standing, dead-front type built on a suitable framework of structural steel which shall provide a self-supporting and stable structure. The framework and structure shall be sufficiently rigid to withstand operation of the equipment or any stresses due to short circuits. Each shipping assembly shall also be sufficiently rigid, with the addition of temporary members if required, to withstand handling during shipment and installation.

b. Enclosure

The enclosure shall be made of selected smooth sheet steel panels, suitably supported. Doors and panels used to support instruments and other devices and barriers between compartments shall not be less than No. 11

SECTION 26 23 10.10 28 Page 14

MSG. Exposed panels on the front and ends of the enclosure shall be bent angle or channel edges with all corner seams welded and ground smooth, or shall be the manufacturer's equivalent construction as approved. The front outside surfaces shall not be drilled or welded for the purpose of attaching wires or mounting devices if such holes or fastenings will be visible from the front.

c. Drawout Circuit Breaker

Each drawout type circuit breaker shall be completely enclosed in a metal compartment. Access to the circuit breakers, instrument wiring, relay wiring, instrument transformers and fuses shall be provided through hinged steel doors. All hinged doors shall have bent angle or channel edges with all corner seams welded and ground smooth, or shall be the manufacturer's equivalent construction as approved. Doors shall have hidden hinges with suitable latches or fastenings. Access to bus compartments shall be through removable bolted panels or cover plates.

c. Ventilating Opening

Ventilating grille type openings shall be provided as required. All ventilating openings shall be provided with corrosion-resistant insect-proof screens mounted on the inside.

d. Foundations

Continuous steel channel foundations, complete with bolts and drilled holes for grouting and anchoring to the floor, shall be furnished by the Contractor for the entire length (front, rear and ends) of each switchgear assembly. Channel construction and drilling shall be as required for mounting the equipment. The channels shall be designed for flat mounting and maximum channel depth shall be 1-1/2 inches. Trim shall be provided to completely enclose open ends in foundation. All foundations shall be suitable for the dynamic switching forces of the circuit breaker and the specified seismic forces. The foundation shall satisfy the requirements of Sections 03 60 00.01 28 and 13 48 00.00 26 . Foundation Detail Drawings of the foundation and its installation requirements shall be submitted along with the drawing submittals.

e. Infra-red (IR) Viewing Windows

Infra-red (IR) viewing windows shall be provided on the rear of the switchgear enclosures, minimum one window for each vertical breaker section shall be installed. However, the contractor shall provide the number of windows required to view each circuit breaker cable lug to allow IR sensing of each breaker in the closed position under load conditions without having to open the enclosure. Windows shall feature a removable steel or aluminum security cover over a 4-inch crystal sightglass. The IR windows shall be the switchgear manufacturer's standard product, or a third-party product that is UL certified and arc-flash tested to the kA rating of the breakers or higher, and installed with the coordination and approval of the switchgear manufacturer.

2.2.3 Device Arrangement

The switchgear, breaker and auxiliary equipment arrangement is shown on the drawings. Any proposed deviation from this arrangement shall be submitted to the Contracting Officer for approval. The design of the switchgear and arrangement of devices shall be such that adequate space is

SECTION 26 23 10.10 28 Page 15 provided for inspection and maintenance of wiring, terminals, and devices.

Equipment on the rear of the panels shall be so mounted that the studs of the equipment mounted on the front of the panels will be accessible without removing any device. Layout of equipment shall be such to allow maintenance access to all panels.

2.2.4 Buses And Connections

a. Each main bus shall have a continuous current-carrying capacity of not less than 2,000 amperes without exceeding the temperature limits specified in IEEE C37.20.1 . The buses shall be braced to coordinate with the mechanical and thermal capacities of the interrupting rating of the main circuit breakers. The bus shall not be braced less than the breakers close and latch rating and shall be not less than braced 65 kA momentary current. Bus bars shall be of hard-drawn copper bars and shapes conforming to the requirements of ASTM B187/B187M . Shop splices and tap connections shall be brazed, pressure-welded or bolted. All splices for field assembly shall be bolted. Where bolted connections are used, contact surfaces shall be silver-plated and have adequately located bolts to provide proper contact pressure for low conductivity. The buses shall be mounted on insulating supports of wet process porcelain, glass polyester, or suitable molded material.

All primary connections including the power connections to the line side of the circuit breakers shall be by bus bar.

b. The standard phasing within equipment housing for AC power circuits shall be A-B-C from left to right when facing the front of the equipment, A-B-C from top to bottom, and A-B-C from front to back.

Nonstandard phasing in any compartment will be permitted only upon approval. If approved, each phase shall be identified and a warning sign, "Nonstandard Phasing," shall be incorporated within such a compartment.

c. Blank compartments shall be complete with provisions for installing future feeder circuit breakers where shown.

d. Grounding studs shall be installed on both main buses for applying safety grounds in the field. The studs shall be accessible through removable rear bolted covers.

2.2.4.1 Ground Bus

The switchgear assembly shall have a full-length interior ground bus bar to which the housing, framework, cable supports, bus supports, and all non-current carrying metallic parts of all equipment and conduits are grounded. The operating mechanism of the drawout units shall be permanently grounded, ground contacts shall be provided to automatically connect the movable element to the ground buses. Grounding shall conform to IEEE C37.20.1 except that the ground conductor shall have a continuous current-carrying capacity not less than 25 percent of the continuous rating of the circuit breakers. The ground bus shall have a connection pad for connecting to the powerhouse ground, and transformer ground.

2.2.5 Power Circuit Breakers

2.2.5.1 General

a. Each drawout type circuit breaker shall be completely enclosed in a metal compartment and shall have safety shutters.

SECTION 26 23 10.10 28 Page 16

b. The main, bus tie, and feeder air circuit breakers shall be 3-pole, dead-front, drawout type rated 600 volts AC, conforming to the requirements of IEEE C37.13 , IEEE C37.16 and IEEE C37.17 . All circuit breakers of the same frame size and type of operation shall be interchangeable. Breaker cubicles shall allow for the switchgear to fit within the footprint allowed in the contract drawing. Suitable means shall be provided for removing and handling the drawout circuit breakers. These means may include support from the top of the switchgear enclosure without interference with incoming or outgoing wiring. Overcurrent trip alarm contacts, with means for manual reset, shall be furnished as indicated. Covers shall be provided over readily accessible energized portions to prevent hazards to personnel when withdrawing or inserting the breakers.

2.2.5.2 Main and Bus Tie Circuit Breakers

a. The two main circuit breakers and the bus tie circuit breakers shall be electrically-operated drawout type with the closing mechanism designed for operation on 125 volts DC. The circuit breakers shall be rated 600 volts AC,2,500 ampere frame size for SQO and SQ1, and 1,600 ampere frame size for SQ2; 65,000 amperes symmetrical interrupting capacity at 600 volts AC, with continuous current settings as indicated. Each circuit breaker shall be provided with functional components in accordance with Table 1 of IEEE C37.13 , including means for manual emergency tripping and manual closing for maintenance operation.

b. Each Main and tie breaker, except as specified otherwise, shall be provided with a digital trip unit as specified below to provide overcurrent protection. The breaker trip settings are as shown on the drawings. The Contractor shall coordinate the current plug rating with the trip setting to allow for flexible coordination with downstream breakers. The rating plug shall be sized for the rating of the breaker frame size. The Government reserves the right to change the trip settings and current plug (within the breaker frame size) at no cost when Contractor shop drawings are submitted.

c. In conjunction with the digital trip unit, an arc flash reduction maintenance switch (ARMS) to engage the appropriate instantaneous element to reduce the arc flash level shall be provided. The contractor provided switch and indicating lamp shall be mounted on the breaker cell door and switch shall have means to install a padlock. A second maintenance switch shall be provided for the main breakers that would control the upstream XP relay. The Government will wire the switch to the XP relay .

d. The two main circuit breakers and the bus tie circuit breaker shall be electrically interlocked so that only two of the three breakers can be in the closed position at the same time. The use of control relays for this interlock scheme is not acceptable. Only auxiliary breaker contacts and cell switches shall be utilized.

e. A local test control switch shall be provided for each electrically-operated circuit breaker. The breaker shall be electrically interlocked through cell switches or secondary disconnects to prevent breaker operation except when the breaker is in the test position. Sufficient breaker auxiliary switch contacts and cell switches shall be provided to accomplish the required

SECTION 26 23 10.10 28 Page 17 interlocking and control system as shown in the drawings, however, there shall be no less than four auxiliary switch contacts with no less than two spare cell switch contacts, one normally-open and one normally-closed for each electrically-operated breaker.

f. Each main and tie breaker shall be equipped with a manually-reset bell alarm contact to energize an annunciation circuit only when the breaker is automatically tripped on a fault or overload.

g. In addition to the above requirements, a second bus tie breaker shall be provided in series with the remotely operated bus tie breaker. This breaker is to electrically isolate the tie breaker when performing maintenance. The two tie breakers shall be separated by a steel barrier. Both breakers shall be identically equipped.

2.2.5.3 Feeder Air Circuit Breakers

a. Feeder breakers shall be electrically-operated drawout type with the closing mechanism designed for operation on 125 volts DC, with frame sizes as indicated, and shall be rated 600 volts AC. Circuit breakers with 800-ampere frames shall have a short-circuit interrupting capacity of not less than 65,000 rms symmetrical amperes at 600 volts AC.

b. Each feeder breaker, except as specified otherwise, shall be provided with a digital trip unit as specified below to provide overcurrent protection. The breaker trip settings are as shown on the drawings. The Contractor is required to ensure that the current plug rating is a minimum of 125% of the trip setting to allow for flexible coordination of downstream breakers. The rating plug shall be sized for approximately 125% to 150% of the required trip setting. The Government reserves the right to change the trip settings and current plug (within the breaker frame size) at no cost when Contractor shop drawings are submitted.

c. A local test control switch shall be provided for each electrically-operated circuit breaker. The breaker shall be electrically interlocked through cell switches or secondary disconnects to prevent breaker operation except when the breaker is in the test position. Sufficient breaker auxiliary switch contacts and cell switches shall be provided to accomplish the required breaker control and interlocking system as shown. At least four breaker position auxiliary switch contacts, two normally-open; two normally-closed, shall also be provided on each electrically-operated breaker.

d. In conjunction with the digital trip unit, a maintenance switch to engage the appropriate instantaneous element to reduce the arc flash level shall be provided. The switch shall have a indicating lamp and shall have means to install a pad lock.

2.2.5.4 Digital Trip Unit

a. The digital trip unit shall be a direct acting over-current tripping device consisting of adjustable long-time-delay, short-time-delay, instantaneous, and ground elements. The long-time-delay trip elements for direct-acting overcurrent tripping devices shall be adjustable over an approximate range of 0.4 to 1.0 of the trip ampere rating. The short-time-delay and instantaneous trip

SECTION 26 23 10.10 28 Page 18 elements, for the direct-acting overcurrent tripping devices shall be adjustable over a range of approximately 2 to 10 times the ampere rating. The trip device shall satisfy the requirements of

IEEE C37.90.1

b. Tripping characteristics shall be selected to provide maximum selectivity between the primary supply protective relays, main, tie, feeder breakers and the downstream motor control center molded case circuit breakers for a fault on a feeder circuit. The Government will provide trip unit settings within 45 days after approval of the trip unit.

c. The trip unit shall have a visible LCD display to indicate the current, breaker trip settings and the last trip data. A battery may be provided, however 125 VDC from the breaker control power shall be used to charge the battery and provide power to the trip unit. In no case however shall the overcurrent tripping functions be disabled by loss of battery or 125 VDC control power.

d. The trip unit shall be equipped with a RS 485 communication port for Modbus protocol communication with remote equipment. The trip unit shall allow the connection together of all communication ports within a the switchgear assembly allow for one modbus cable to be used for the entire switchgear. A suitable lockout device or key shall be provided to prevent unauthorized modification of the trip settings.

e. The trip units shall continuously perform self diagnostics and shall provide visual and alarm output on failure.

f. The trip device shall allow the monitoring of the following parameters:

(1) 3-phase current

(2) 3-phase voltage

(3) Power Factor

(4) Watts

(5) KWh

(6) Breaker position

(7) Trip Data (until locally cleared)

(8) Settings

g. The Contractor shall provide a portable programming and testing unit designed and approved for use by the trip unit manufacture to program and test the trip unit functions as well as download any trip data.

2.2.5.5 Safety Shutters

Each breaker shall have positive acting safety shutters that cover the station primary contacts when the breaker is withdrawn from the cell.

2.2.5.6 Zone Interlocking

The trip unit must be capable of providing zone interlocking for the short-time delay and ground fault delay trip functions for improved system coordination. The zone interlocking system must restrain the tripping of an upstream breaker and allow the breaker closest to the fault to trip with no intentional time delay. In the event that the downstream breaker does not trip, the upstream breaker must trip after the present time delay. Switchgear must be wired for zone interlocking for the power circuit breakers within the switchgear.

SECTION 26 23 10.10 28 Page 19

2.2.6 Automatic Bus Transfer

Each 480 volt switchgear SQO, SQ1, and SQ2 shall be configured with an automatic bus transfer scheme. The breakers shall have sufficient auxiliary contacts to allow the bus transfer scheme to function. The automatic transfer shall use a programmable relay to implement the automatic transfer scheme. Programming of the relays will be done by the Government if SEL 751A relays are provided. If other make/model is provided, the contractor shall program and provide relay settings for approval. The automatic transfer arrangement shall be as shown by the schematic diagrams and shall incorporate the following (normal operation will be with both supply breakers closed and the bus tie breaker open):

a. A Manual mode, so that no automatic transfer operation is performed. Breaker close control is electrically interlocked to prevent closure of both main breakers and tie breakers at the same time.

b. An Auto Normal Mode. The system transfers to alternate routes upon loss of the normal source and automatically returns to normal once the normal source is restored.

c. An Auto Live Mode. The system transfers only when the active source is lost. System does not automatically return to normal.

d. Automatic operation shall be disabled when any of the following conditions exist:

1. Either the main or tie breakers trip on a fault

2. Operator manually trips a main or tie breaker

3. Ground Fault or transformer high temperature trip

4. Any main or tie breaker not in the connected position.

e. After pickup by relays, the bus transfer operation shall be accomplished within approximately 1 second.

2.2.7 Protective Relays

Install a microprocessor based protective relay to perform the required functions as specified and required. The relay shall provide overcurrent protection of the main breakers as shown on the drawings The relay shall also provide ground detection alarm and tripping in conjunction with three 3-phase voltage transformers connected to each bus section. The protective relay shall have arc-flash light sensing with high speed detection and shall be used in conjunction of the fiber optic sensors.

The relay shall be provided with adequate fiber sensor inputs to implement the required number of protective zones. The relay shall have a minimum 10 year warranty. Protective Relays shall have programmable button on the front of the relay labeled to "MAINT" for an Arc Flash maintenance mode.

Additionally, a front indicating LED shall be labeled "ENABLED" to indicate when maintenance mode is active. The relay shall be used to perform the automatic bus transfer function and shall be compatible with SEL networking equipment. The relay shall be wired to the transformer temperature relay alarm and trip contacts to provide protection of the transformer and provide alarm on overtemperature. The alarm functions shall be connected into the existing annunciation system. Power to operate the Protection relays shall be from 125 VDC from the Station Battery, with a range of 105 VDC to 140 VDC. Power consumption shall be not more than 25 Watts. The Protective Relays shall be SEL 751A model or

SECTION 26 23 10.10 28 Page 20 approved equal.

2.2.8 Test Switches

Test switches shall be provided as shown for all voltage, current, power and trip signals into the protective relay to alarm for testing and maintenance. The test switches shall have covers and combination test switches shall not exceed 14 poles. Current test switches shall be the short-circuiting type. Test devices shall be provided for insertion into the associated test switches to permit application of the proper current or potential source for testing and calibration. Test switches shall be rated not less than 20 amperes and 125 volts DC.

2.2.9 Fiber Optic Arc Flash Sensors

The switchgear shall be provided with arc flash fiber optic loop sensors as recommended by the Protective Relay manufacturer. The loop sensors shall be compatible with the protective relay provided. For double-ended switchgear, two loops shall be run in parallel throughout the entire switchgear, one for each relay input. Documentation of their compatibility shall be provided on request. The sensors shall be designed specifically for the use in arc flash sensing and shall be connected to the relay in accordance with the manufactures recommendations

2.2.10 Wiring

In addition to the requirements for Special Wire and Cable in Section 26 05 19.00 28 , INSULATED WIRE AND CABLE, the switchgear wiring shall meet the following requirements:

a. All control wire, including wire for removable elements, shall be type SIS stranded copper switchboard wire with 600 volt insulation.

The wire shall comply with the requirements of UL 44 and shall pass the VW-1 flame test of UL 1581 . Hinge wire shall have Class K stranding. Current transformer secondary leads shall be not smaller than No. 10 AWG. Minimum wire size for all other control wiring shall be No. 14 AWG.

b. A suitable wiring duct system shall be installed for all interpanel wiring and shall provide easy access for inspection and replacement of wiring. All wiring shall be installed in wiring channels and ducts as far as possible. Each wire shall be properly protected where it leaves a channel or duct. Whether or not installed in ducts the wiring shall be installed in neat workmanlike manner.

c. Wiring, where not installed in channels or ducts, shall be formed into compact wire bundles suitably bound together and properly supported. Bindings and supports shall not cause damage or cold flow of the insulation. Groups of exposed wires shall be run straight horizontally or vertically with short-radius right-angle bends.

Wiring supports shall be of heavy-gage rustproof material or steel with rust-resisting finish equivalent to sherardizing or cadmium-zinc plating. There shall be no splices in the wiring and all connections shall be made at terminal studs or terminal blocks with ring-tongue indented terminals. All screw terminals shall have toothed lockwashers and all stud terminals shall have contact nuts and either locking nuts or lockwashers. Each conductor shall be identified at each end with a permanently machine-embossed black identification on white plastic tubular shrink-on marker and as shown on the connection

SECTION 26 23 10.10 28 Page 21 diagram terminal blocks.

d. Provide a control cable conduit entry into a dedicated section with metal barriers. Any control or signal wiring within the bus compartments shall be completely shielded in a protective metal enclosure. All current transformer secondary leads shall be routed through metal conduits separately from all other wiring, to short-circuiting terminal blocks in the control cabinet or in a separate cabinet.Interpanel terminal blocks shall be used for interconnecting the wiring between adjacent panels at shipping splits. Hinge wire shall be used between stationary panels and swinging panels or swinging doors and shall be formed in vertical wire loops which shall provide rotation around the longitudinal axis of the conductors. Instrument transformer secondary circuits where required shall be grounded at the switchgear.