Specs GA Replace Spillway Transformers and Disconnects specs.pdf

SPECIFICATIONS

(For Construction Contract)

Solicitation Number W9128F24Q0055

Replace Spillway Transformers and Disconnects Garrison Dam, ND

July 2024

US Army Corps of Engineers Omaha District

This page was intentionally left blank for duplex printing.

Replace Spillway Transformers and Disconnects Garrison Dam, ND GR00115

PROJECT TABLE OF CONTENTS

DI VI SI ON 26 - ELECTRI CAL

26 05 95.13 HIGH RESISTANCE GROUNDING SYSTEM LOW VOLTAGE

26 11 16.00 TRANSFORMERS

26 28 00.00 10 MOTOR CONTROL CENTER

DI VI SI ON 33 - UTI LI TI ES

33 71 01 OVERHEAD TRANSMISSION AND DISTRIBUTION

-- End of Project Table of Contents --

PROJECT TABLE OF CONTENTS Page 1

SUBMITTAL FORM,Jan 96 PREVIOUS EDITION IS OBSOLETE PAGE 1 OF 2 PAGES

Replace Spillway Transformers and Disconnects Garrison Dam, ND

26 05 95.13 SD-02 Shop Drawings

G DOAssembly Drawings

G DOThree-line diagram

SD-03 Product Data

G DOEquipment

Factory Tests

26 11 16.00 SD-02 Shop Drawings

1.5.1.1 G DOTransformer Drawings

SD-03 Product Data

G DOFuse Curves

2.1.2 G DOTransformer (Dry-type)

SD-06 Test Reports

3.1.1 G DOAcceptance Checks and Tests

SD-07 Certificates

1.5.2 G DOPaint Coating System

1.5.3 G DOTransformer Efficiencies

SD-09 Manufacturer’s Field

Reports

2.4.3 G DODesign Tests (Dry-type)

2.4.4 G DORoutine and Other Tests

(Dry-type)

SD-11 Closeout Submittals

1.6.1 G POAssembled Operation and

Maintenance Manuals

2.4.1 G POEquipment Test Schedule

26 28 00.00 10 SD-02 Shop Drawings

SUBMITTAL REGISTER

CONTRACT NO.

TITLE AND LOCATION CONTRACTOR

CONTRACTOR:

SCHEDULE DATES

CONTRACTOR

ACTION

APPROVING AUTHORITY

A C T I V I T Y

N O

T R A N S M I T T A L

N O

S P E C

S E C T

DESCRIPTION

ITEM SUBMITTED

P A R A G R A P H

C L A S S I F I C A T I O N

G O V T

O R

A E

R E V W

R SUBMIT

APPROVAL

NEEDED

BY

MATERIAL

NEEDED

BY

A C T I O N

C O D E

DATE

OF

ACTION

DATE FWD

TO APPR

AUTH/

DATE RCD

FROM

CONTR

DATE FWD

TO OTHER

REVIEWER

DATE RCD

FROM OTH

REVIEWER

A C T I O N

C O D E

DATE

OF

ACTION

MAILED

TO

CONTR/

DATE RCD

FRM APPR

AUTH REMARKS

(a) (b) (c) (d) (e) (f) (g) (h) (i) (j) (k) (l) (m) (n) (o) (p) (q) (r)

SUBMITTAL FORM,Jan 96 PREVIOUS EDITION IS OBSOLETE PAGE 2 OF 2 PAGES

Replace Spillway Transformers and Disconnects Garrison Dam, ND

26 28 00.00 10 2.7.2 G DODrawings

2.4.1 G DOShop Drawings

2.8 G DOMotor Control Centers

SD-03 Product Data

1.4 G DOEquipment

2.9Factory Tests

Request For Settings

SD-06 Test Reports

2.9Factory Tests

G DOAcceptance Checks And Tests

SD-07 Certificates

2.8Motor Control Centers

33 71 01 SD-03 Product Data

2.2 G DOCutouts

3.1.2Acceptance Checks and Tests

SD-10 Operation and Maintenance

Data

1.5 G POOperation and Maintenance

Manuals

1.5.1 G POOperation and Maintenance

Manuals

SUBMITTAL REGISTER

CONTRACT NO.

TITLE AND LOCATION CONTRACTOR

CONTRACTOR:

SCHEDULE DATES

CONTRACTOR

ACTION

APPROVING AUTHORITY

A C T I V I T Y

N O

T R A N S M I T T A L

N O

S P E C

S E C T

DESCRIPTION

ITEM SUBMITTED

P A R A G R A P H

C L A S S I F I C A T I O N

G O V T

O R

A E

R E V W

R SUBMIT

APPROVAL

NEEDED

BY

MATERIAL

NEEDED

BY

A C T I O N

C O D E

DATE

OF

ACTION

DATE FWD

TO APPR

AUTH/

DATE RCD

FROM

CONTR

DATE FWD

TO OTHER

REVIEWER

DATE RCD

FROM OTH

REVIEWER

A C T I O N

C O D E

DATE

OF

ACTION

MAILED

TO

CONTR/

DATE RCD

FRM APPR

AUTH REMARKS

(a) (b) (c) (d) (e) (f) (g) (h) (i) (j) (k) (l) (m) (n) (o) (p) (q) (r)

SECTION TABLE OF CONTENTS

DIVISION 26 - ELECTRICAL

SECTION 26 05 95.13

HIGH RESISTANCE GROUNDING SYSTEM LOW VOLTAGE

PART 1 GENERAL

1.1 SCOPE

1.2 SUBMITTALS

1.3 MAINTENANCE

1.4 QUALITY CONTROL

1.4.1 Qualifications

1.5 DELIVERY, STORAGE, AND HANDLING

PART 2 PRODUCTS

2.1 MATERIALS AND EQUIPMENT

2.2 RATINGS

2.3 CONSTRUCTION

2.4 WIRING/TERMINATIONS

2.5 METERING AND CONTROLS

2.6 ENCLOSURES

2.7 NAMEPLATES

2.8 2.09 FINISH

PART 3 EXECUTION

3.1 FACTORY TESTING

3.2 TRAINING

3.2.1 OPERATION AND MAINTENANCE MANUALS

-- End of Section Table of Contents --

SECTION 26 05 95.13 Page 1

SECTION 26 05 95.13

HIGH RESISTANCE GROUNDING SYSTEM LOW VOLTAGE

PART 1 GENERAL

1.1 SCOPE

A. The contractor shall furnish a high resistance grounding system as specified herein and as shown on the contract drawings.

1.2 SUBMITTALS

Government approval is required for submittals with a "G" or "S" classification. Submittals not having a "G" or "S" classification are for information only. When used, a code following the "G" classification 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

Assembly Drawings; G , DO

Three-line diagram; G , DO

Three-line diagram; G , DO

SD-03 Product Data

Equipment; G , DO

Factory Tests

1.3 MAINTENANCE

Accessories and Tools

Furnish a complete set of accessories and special tools unique to equipment provided and required for erecting, handling, dismantling, testing and maintaining the apparatus.

1.4 QUALITY CONTROL

1.4.1 Qualifications

a. The manufacturer of the assembly shall be the manufacturer of the major components within the assembly.

b. The manufacturer of this equipment shall have produced similar electrical equipment for a minimum period of five (5) years. When requested by the Engineer, an acceptable list of installations with similar equipment shall be provided demonstrating compliance with this requirement.

SECTION 26 05 95.13 Page 2

1.5 DELIVERY, STORAGE, AND HANDLING

Equipment shall be handled and stored in accordance with manufacturer's instructions. One (1) copy of these instructions shall be included with the equipment at time of shipment.

PART 2 PRODUCTS

2.1 MATERIALS AND EQUIPMENT

Provide materials and equipment which are standard products of a manufacturer regularly engaged in their manufacture and that essentially duplicate items that have been in satisfactory use for at least 2 years prior to bid opening and that conform to the requirements of these specifications. Provide high quality materials, free from defects and imperfections, of recent manufacture, and of the classification and grades designated. All materials, supplies, and articles not manufactured by the Contractor must be the products of other recognized reputable manufacturers.

2.2 RATINGS

a. Voltage rating shall be as indicated on the drawings. The entire assembly shall be suitable for 600 volts maximum ac service.

b. The assembly shall be rated to withstand mechanical forces exerted during short circuit conditions when connected directly to a power source having available fault current of 30,000 amperes symmetrical at rated voltage.

c. All ratings shall be tested to the requirements of ANSI C37.20.1 and UL witnessed and approved.

2.3 CONSTRUCTION

a. The assembly shall be provided with adequate lifting means and shall be capable of being moved into installation position and bolted directly to the floor without the use of floor sills providing the floor is level to 1/8 inch per 3-foot distance in any direction. Base of assembly shall be suitable for rolling directly on pipes without skids.

b. Each vertical steel unit forming part of the assembly shall be a self-contained housing having an instrument compartment and a resistor compartment. The control compartment shall be segregated from the resistor compartment by means of steel barriers.

c. The assembly shall be fully front accessible. Rear or side access shall not be required for installation or maintenance.

d. A copper ground bus shall be firmly secured to the assembly. It shall be tin-plated copper. Provide terminals for connection of the system grounding conductor, suitable for #6 AWG to 500 kcmil copper or aluminum.

2.4 WIRING/TERMINATIONS

a. Small wiring, necessary fuse blocks and terminal blocks within the switchgear shall be furnished as required.

SECTION 26 05 95.13 Page 3

b. All control wire insulation shall be type SIS. Wire bundles shall be secured with nylon ties and anchored to the assembly without the use of adhesive-only wire anchors. All current transformer secondary leads shall first be connected to front accessible short-circuiting terminal blocks before connecting to any other device. Shorting screws with provisions for storage shall be provided. All groups of control wires shall be provided with terminal blocks with suitably numbered strips.

Provide machine printed wire marking at three inch intervals along all control wiring.

2.5 METERING AND CONTROLS

a. Provide a separate control compartment with front hinged door that includes the following:

1. A switchboard type ground current ammeter, 1% accuracy, 250-degree scale, 0 to 10 A ac

2. System control selector switch with PULSE/NORMAL/TEST positions.

Switch shall spring-return from the test position

3. Reset control selector switch with AUTO/MANUAL/RESET positions.

Switch shall spring-return from RESET position. The AUTO position shall cause the ground fault relay to automatically reset when a ground is no longer detected. The MANUAL position shall cause the ground alarm relay to latch and remain latched until the selector is moved to the RESET position by the operator

4. A green lamp to indicate that the system is in normal condition, a red lamp to indicate that a ground fault has been detected, and a white lamp that flashes at the same rate and at the same time as the pulsing contactor

5. An instruction nameplate that provides the operator with a step-by-step procedure for operating the controls

6. A rating nameplate that states the maximum ground current, maximum pulse current and duty rating of the equipment at maximum current levels

b. Provide the following control devices and features:

1. Ground fault relay with harmonics filter to prevent nuisance tripping on systems with high harmonic currents created by variable frequency drives. Ground fault relay shall have a UL 1053 label

2. One normally open and one normally closed ground fault alarm contact and Modbus RTU.

3. Test loops (for convenient attachment of a snap-on hand-held ammeter) in the ground current and test current circuits

4. A test circuit protected by a current-limiting fuse rated 200,000 amperes and operated by the system control switch via a panel-mounted test circuit relay. The test circuit shall connect phase B to ground through a current-limiting resistor. The test circuit shall not be direct-wired to the door-mounted test switch.

SECTION 26 05 95.13 Page 4

The test circuit relay shall be constrained from operating if a ground fault is presently being detected

5. A pulsing contactor, controlled by an adjustable timer. The timer shall allow an adjustment range of 0-10 seconds

6. 120 Vac control power transformer for self-contained operation.

The control power transformer shall have current limiting primary fuses rated 200,000 AIC at the system voltage

7. Primary 4-wire disconnect switch mounted ahead of test and control power fuses

8. Tapped resistors with taps wired out to a convenient front accessible terminal block. Taps shall provide 1 to 5 amperes of ground current in 1 amp increments. Resistors shall be heavy-duty industrial type, edgewound or wirewound design. Each resistor tube shall have a stamped steel rating nameplate. The resistor assembly shall be interconnected with 200 degree C rated #8 AWG wire. All connections to the resistor assembly shall be #8 AWG SIS wire

9. All wiring in the grounding circuit from the neutral point to the system ground terminal shall be #8 AWG type SIS minimum. All control wiring shall be #14 AWG type SIS minimum

10. A detailed schematic shall be furnished that accurately and completely describes the control and grounding circuits. All wire designations, terminal points, control device and selector switch contact developments shall be shown. The schematic and the accompanying wiring diagrams shall be amended as required after final testing at the factory. An as-built copy of the schematic, wiring diagrams and material list shall be packed with the unit prior to shipment. Provide a drawing pocket secured by screws or weldment for drawing storage within the assembly

2.6 ENCLOSURES

NEMA 12 Enclosure

2.7 NAMEPLATES

a. Engraved nameplates, mounted on the face of the assembly, shall be furnished for all main and feeder circuits as indicated on the drawings. Nameplates shall be laminated plastic, black characters on white background, and secured with screws. Characters shall be 3/16-inch high, minimum.

b. Control components mounted within the assembly, such as fuse blocks, relays, pushbuttons, switches, etc., shall be suitably marked for identification corresponding to appropriate designations on manufacturer's wiring diagrams.

2.8 2.09 FINISH

All exterior and interior steel surfaces of the switchgear shall be properly cleaned and provided with a rust-inhibiting phosphatized coating.

Color and finish of the assembly shall be the manufacturer's standard.

SECTION 26 05 95.13 Page 5

PART 3 EXECUTION

3.1 FACTORY TESTING

a. The following standard factory tests shall be performed on the equipment provided under this section. All tests shall be in accordance with the latest version of ANSI and NEMA standards.

1. Completely test the high resistance grounding system for operation under simulated service conditions to assure the accuracy of the wiring and the functioning of all equipment

2. The wiring and control circuits shall be given a dielectric test of 1500 volts for one minute or 1800 volts for one second between live parts and ground in accordance with ANSI C37.20.1

3.2 TRAINING

The training session shall be conducted by a manufacturer's qualified representative. The training program shall consist of the instruction on the operation of the high resistance system.

3.2.1 OPERATION AND MAINTENANCE MANUALS

Equipment operation and maintenance manuals shall be provided with each assembly shipped and shall include instruction leaflets and instruction bulletins for the complete assembly and each major component.

-- End of Section --

SECTION 26 05 95.13 Page 6

DIVISION 26 - ELECTRICAL

SECTION 26 11 16

TRANSFORMERS

PART 1 GENERAL

1.1 REFERENCES

1.2 SUMMARY

1.3 DEFINITIONS

1.4 SUBMITTALS

1.4.1 Coordinated Submittal Reviews

1.5 QUALITY ASSURANCE

1.5.1 Drawing Requirements

1.5.1.1 Transformer Drawings

1.5.2 Paint Coating System

1.5.3 Transformer Efficiencies

1.5.4 Substation Product Data

1.5.5 Test Reports

1.5.6 Regulatory Requirements

1.5.7 Standard Products

1.5.7.1 Alternative Qualifications

1.5.7.2 Material and Equipment Manufacturing Date

1.6 MAINTENANCE

1.6.1 Assembled Operation and Maintenance Manuals

1.6.2 Operation and Maintenance Data

1.7 WARRANTY

PART 2 PRODUCTS

2.1 TRANSFORMER

2.1.1 Incoming Section

2.1.1.1 Incoming Section Enclosure

2.1.1.2 Surge Arresters

2.1.2 Transformer (Dry-Type) Section

2.1.2.1 Transformer Ratings

2.1.3 Outgoing Section

2.1.3.1 Outgoing Section Enclosure

2.1.4 Terminal Boards

2.1.5 Wire Marking

2.1.6 Grounding and Bonding

2.2 MANUFACTURER'S NAMEPLATES

2.3 WARNING SIGNS

2.4 SOURCE QUALITY CONTROL

2.4.1 Equipment Test Schedule

2.4.2 Decibel Tests

2.4.3 Transformer Design Tests (Dry-Type)

2.4.4 Transformer Routine and Other Tests (Dry-Type)

PART 3 EXECUTION

SECTION 26 11 16.00 Page 1

3.1 FIELD QUALITY CONTROL

3.1.1 Performance of Acceptance Checks and Tests

3.1.1.1 Medium-Voltage Circuit Breakers (SF6)

3.1.1.2 Transformers - (Dry-Type)

3.1.1.3 Current Transformers

SECTION 26 11 16.00 Page 2

SECTION 26 11 16

TRANSFORMERS

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.

AMERICAN NATIONAL STANDARDS INSTITUTE (ANSI)

ANSI Z540.1 (1994; R 2002) Calibration Laboratories and Measuring and Test Equipment - General Requirements

ASTM INTERNATIONAL (ASTM)

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

ASTM A153/A153M (2023) Standard Specification for Zinc Coating (Hot-Dip) on Iron and Steel Hardware

ASTM A653/A653M (2023) Standard Specification for Steel Sheet, Zinc-Coated (Galvanized) or Zinc-Iron Alloy-Coated (Galvannealed) by the Hot-Dip Process

ASTM D1535 (2014; R 2018) Standard Practice for Specifying Color by the Munsell System

INSTITUTE OF ELECTRICAL AND ELECTRONICS ENGINEERS (IEEE)

IEEE 100 (2000; Archived) The Authoritative Dictionary of IEEE Standards Terms

IEEE C37.20.3 (2013) Standard for Metal-Enclosed Interrupter Switchgear

IEEE C37.121 (2012) American National Standard for Switchgear-Unit Substations - Requirements

IEEE C57.12.01 (2020) General Requirements for Dry-Type Distribution and Power Transformers Including Those with Solid-Cast and/or Resin-Encapsulated Windings

IEEE C57.12.29 (2014) Standard for Pad-Mounted Equipment

- Enclosure Integrity for Coastal Environments

SECTION 26 11 16.00 Page 3

IEEE C57.12.50 (1981; R 1998) Ventilated Dry-Type Distribution Transformers, 1 to 500 kVA, Single-Phase, and 15 to 500 kVA, Three-Phase, with High-Volt 601 to 34,500 Volts

IEEE C57.12.80 (2010) Standard Terminology for Power and Distribution Transformers

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

IEEE C57.98 (2011) Guide for Transformer Impulse Tests

IEEE C57.124 (1991; R 2002) Recommended Practice for the Detection of Partial Discharge and the Measurement of Apparent Charge in Dry-Type Transformers

IEEE C62.11 (2020) Standard for Metal-Oxide Surge Arresters for Alternating Current Power Circuits (>1kV)

INTERNATIONAL ELECTRICAL TESTING ASSOCIATION (NETA)

NETA ATS (2021) Standard for Acceptance Testing Specifications for Electrical Power Equipment and Systems

INTERNATIONAL ORGANIZATION FOR STANDARDIZATION (ISO)

ISO ISO/IEC 17025 (2017) General Requirements for the Competence of Testing and Calibration Laboratories

NATIONAL ELECTRICAL MANUFACTURERS ASSOCIATION (NEMA)

NEMA ICS 6 (1993; R 2016) Industrial Control and Systems: Enclosures

NATIONAL FIRE PROTECTION ASSOCIATION (NFPA)

NFPA 70 (2023; ERTA 4 2023) National Electrical Code

1.2 SUMMARY

a. The location and general arrangement of the low-voltage existing transformers are shown on the contract drawings sheet E-101, new arrangement is to match the existing transformers. Assemble at the factory the metal-enclosed bus structures in sections of sufficient length for convenience of tests, shipment, and installation. After complete assembly, disassemble the transformer group into sections, for convenience of handling, shipment, and installation.

b. Matchmark each shipping section of the transformer properly to facilitate reassembly, and provide with removable lifting channels with eye bolts for attachment of crane slings to facilitate lifting and handling. Ship equipment as completely assembled and wired as

SECTION 26 11 16.00 Page 4 feasible so as to require a minimum of installation work. Provide transformer groups and metal-enclosed buses which are disassembled into sections for shipment with the associated parts properly matchmarked to facilitate installation by the Government. Carefully pack and ship separately any relay , indicating instrument or other device which cannot withstand the hazards of shipment when mounted in place on the transformer. Mark these pieces with the number of the panel on which they are to be mounted and fully identified so they can be readily mounted and connected.

c. Wrap all finished painted surfaces and metal work suitably or otherwise protect from damage during shipment. Prepare all parts for shipment so that slings for handling may be attached readily while the parts are in a railway car or transport truck. Ensure transformer sections crated for shipment are of such size, including crates, that they will pass through a 8-foot by 5-foot hatch opening.

1.3 DEFINITIONS

Unless otherwise specified or indicated, electrical and electronics terms used in these specifications, and on the drawings, must be as defined in

IEEE 100 .

1.4 SUBMITTALS

Government approval is required for submittals with a "G" or "S" classification. Submittals not having a "G" or "S" classification are for Contractor Quality Control approval. Submit the following in accordance with Section 01 33 00 SUBMITTAL PROCEDURES:

1.4.1 Coordinated Submittal Reviews SD-02 Shop Drawings

Transformer Drawings; G , DO

Include wiring diagrams and installation details of equipment indicating proposed location, layout and arrangement, control panels, accessories, piping, ductwork, and other items that must be shown to ensure a coordinated installation. Wiring diagrams must identify circuit terminals and indicate the internal wiring for each item of equipment and the interconnection between each item of equipment. Drawings must indicate adequate clearance for operation, maintenance, and replacement of operating equipment devices. Submittals must include the nameplate data, size, and capacity. Submittals must also include applicable federal, military, industry, and technical society publication references.

SD-03 Product Data

Fuse Curves; G , DO

Transformer (Dry-type); G , DO

Submittal must include manufacturer's information for each component, device, and accessory provided with the transformer.

SD-06 Test Reports

Acceptance Checks and Tests; G , DO

SECTION 26 11 16.00 Page 5

SD-07 Certificates

Paint Coating System; G , DO

Transformer Efficiencies; G , DO

SD-09 Manufacturer's Field Reports

Design Tests (Dry-type); G , DO

Routine and Other Tests (Dry-type); G , DO

SD-10 Operation and Maintenance Data

SD-11 Closeout Submittals

Assembled Operation and Maintenance Manuals; G , PO

Equipment Test Schedule; G , PO

1.5 QUALITY ASSURANCE

1.5.1 Drawing Requirements

1.5.1.1 Transformer Drawings

Drawings must include, but are not limited to the following:

a. An outline drawing, with front, top, and side views.

b. ANSI nameplate data.

1.5.2 Paint Coating System

Submit IEEE C57.12.29 coating system performance requirement tests. When interrupter switchgear and transformer are provided by two different manufacturers, each one must provide certification.

1.5.3 Transformer Efficiencies

Submit certification from the manufacturer indicating conformance with the paragraph SPECIFIED TRANSFORMER EFFICIENCIES".

1.5.4 Substation Product Data

Submittal must include manufacturer's information for each component, device, and accessory provided with the equipment.

1.5.5 Test Reports

Submit report of acceptance test results as specified by paragraph FIELD

QUALITY CONTROL.

1.5.6 Regulatory Requirements

In each of the publications referred to herein, consider the advisory provisions to be mandatory, as though the word, "must" had been substituted for "should" wherever it appears. Interpret references in these publications to the "authority having jurisdiction," or words of

SECTION 26 11 16.00 Page 6 similar meaning, to mean the Contracting Officer. Equipment, materials, installation, and workmanship must be in accordance with the mandatory and advisory provisions of NFPA 70 unless more stringent requirements are specified or indicated.

1.5.7 Standard Products

Provide materials and equipment that are products of manufacturers regularly engaged in the production of such products which are of equal material, design and workmanship. Products must have been in satisfactory commercial or industrial use for 2 years prior to bid opening. The 2-year period must include applications of equipment and materials under similar circumstances and of similar size. The product must have been on sale on the commercial market through advertisements, manufacturers' catalogs, or brochures during the 2-year period. Where two or more items of the same class of equipment are required, these items must be products of a single manufacturer; however, the component parts of the item need not be the products of the same manufacturer unless stated in this section.

1.5.7.1 Alternative Qualifications

Products having less than a 2-year field service record will be acceptable if a certified record of satisfactory field operation for not less than 6000 hours, exclusive of the manufacturers' factory or laboratory tests, is furnished.

1.5.7.2 Material and Equipment Manufacturing Date

Products manufactured more than 3 years prior to date of delivery to site must not be used, unless specified otherwise.

1.6 MAINTENANCE

1.6.1 Assembled Operation and Maintenance Manuals

Manuals must be assembled in durable, hard covered, water resistant binders. The manual must be assembled and indexed in the order noted in a table of contents. The contents of the assembled operation and maintenance manuals must be as follows:

a. Manufacturer's O&M information required by the paragraph, SD-10

OPERATION AND MAINTENANCE DATA.

b. Catalog data required by the paragraph, SD-03 PRODUCT DATA.

c. Drawing required by the paragraph, SD-02 SHOP DRAWINGS.

d. Price for spare parts and supply list

e. Routine and field acceptance test reports

1.6.2 Operation and Maintenance Data

Submit operation and maintenance data in accordance with Section 01 78 23 OPERATION AND MAINTENANCE DATA and as specified herein.

1.7 WARRANTY

The equipment items must be supported by service organizations which are

SECTION 26 11 16.00 Page 7 reasonably convenient to the equipment installation in order to render satisfactory service to the equipment on a regular and emergency basis during the warranty period of the contract.

PART 2 PRODUCTS

2.1 TRANSFORMER

Transformer must comply with IEEE C37.121 regardless of the kVA rating specified. Transformers must consist of one incoming section, one transformer section, and one outgoing section. Substations must be subassembled and coordinated by one manufacturer and must be shipped in complete sections ready for connection at the site. Where practicable, substation must be shipped as one unit. External doors must have provisions for padlocking. Bus bars and conductors must be copper.

2.1.1 Incoming Section

The incoming section must consist of an air-filled terminal chamber for connecting the incoming circuit directly Protective relays, controls, current transformer, voltage transformer and miscellaneous accessories shall be located in low voltage compartments. Operation of the switchgear must not be affected by opening the low voltage compartment doors. If required for proper connection and alignment, include a transition section with the incoming section.

2.1.1.1 Incoming Section Enclosure

The incoming section enclosure must be NEMA ICS 6 Type 12. Bases, frames and channels of enclosure must be corrosion resistant and must be fabricated of galvanized steel. Base must include any part of enclosure that is within 3 inches of concrete pad. Galvanized steel must be ASTM A123/A123M , ASTM A653/A653M G90 coating, and ASTM A153/A153M , as applicable. Paint enclosure, including bases, ASTM D1535 light gray No.

61 or No. 49. Paint coating system must comply with IEEE C57.12.29 .

2.1.1.2 Surge Arresters

IEEE C62.11 , rated 15kV. Arresters must be distribution class. Arresters for use at elevations in excess of 6000 feet above mean sea level must be specifically rated for that purpose. Arresters must be equipped with mounting brackets suitable for the indicated installations.

2.1.2 Transformer (Dry-Type) Section

IEEE C57.12.01 , and IEEE C57.12.50 for dry-type transformers rated up to 500 kVA. Transformer base, including the enclosure, flanges, base, lifting provisions, and hardware, must be fabricated of type 304 or 304L stainless steel. Paint coating system must comply with IEEE C57.12.29 .

Windings must be copper.

Provide a cast coil type transformer with primary and secondary windings individually cast in epoxy. Resin-encapsulated windings are not acceptable. Transformer must have an insulation system rated 185 degrees C, with an 80 degree C average winding temperature rise above a 40 degrees C maximum ambient.

SECTION 26 11 16.00 Page 8

2.1.2.1 Transformer Ratings

a. Transformer must be rated 300 kVA, 60 kV BIL Primary and 10 kV BIL Secondary. Transformer shall have a K-1 K-factor rating.

b. Transformer voltage ratings: 13800 V - 480 V.

c. Provide four 2.5 percent full capacity taps, two above and two below rated primary voltage. Locate tap adjustments on the face of the high voltage coil. Adjustments must be accessible by removing the front panel and must be made when the transformer is de-energized.

d. Minimum tested impedance must not be less than 80 percent at 80 degrees C.

e. Audible sound levels must comply with the following:

kVA DECIBELS (MAX)

225 58

300 58

500 60

700 64

1000 64

1500 65

2000 66

2500 68

f. Diagrammatic stainless steel or laser-etched anodized aluminum nameplate

g. Transformer must include ground pads, lifting lugs and provisions for jacking under base. The transformer base construction must be suitable for using rollers or skidding in any direction. The transformer must have an insulated low-voltage neutral bushing with lugs for ground cable, and with removable ground strap.

h. Dry type transformer must have the following accessories.

(1) Each transformer shall be equipped with a three-phase digital temperature monitor. The monitor shall receive temperature data from a K-type thermocouple in each of the 3 coil assemblies. The monitor shall have a local display to indicate the temperature of each coil assembly and the maximum temperature stored. The monitor shall have a temperature alarm LED and internal buzzer to indicate a high temperature condition. The alarm setpoints shall be adjustable. Communications for remote monitoring shall include Form C alarm contacts and Modbus RTU. A fused control power transformer shall provide the necessary power for the unit.

SECTION 26 11 16.00 Page 9

(2) Infrared inspection windows shall be provided in the primary and secondary terminal compartments and in the transformer section to permit infrared inspection of the terminal connections and windings. Each IR-transmissive lens shall be 100 mm in diameter and shall be secured in a housing with a protective cover.

2.1.3 Outgoing Section

The outgoing section must consist of a secondary transition section for connecting to a low-voltage motor control center. The motor control center must be as specified in Section26 28 00.00 10 MOTOR CONTROL CENTER, SWITCHBAORDS AND PANELBOARDS. Connections between the transformer secondary bushings and the outgoing section transition bus must be flexible braid bus. The secondary transition section must have a hinged front panel.

2.1.3.1 Outgoing Section Enclosure

Provide outgoing section enclosure in accordance with the requirements in paragraph INCOMING SECTION ENCLOSURE.

2.1.4 Terminal Boards

Provide with engraved plastic terminal strips and screw type terminals for external wiring between components and for internal wiring between removable assemblies. Terminal boards associated with current transformers must be short-circuiting type. Terminate conductors for current transformers with ring-tongue lugs. Terminal board identification must be identical in similar units. External wiring must be color coded consistently for similar terminal boards.

2.1.5 Wire Marking

Mark control and metering conductors at each end. Provide factory-installed, white, plastic tubing, heat stamped with black block type letters on factory-installed wiring. On field-installed wiring, provide white, preprinted, polyvinyl chloride (PVC) sleeves, heat stamped with black block type letters. Each sleeve must be elliptically shaped to securely grip the wire, and must be keyed in such a manner to ensure alignment with adjacent sleeves. Provide specific wire markings using the appropriate combination of individual sleeves. Each wire marker must indicate the device or equipment, including specific terminal number to which the remote end of the wire is attached.

2.1.6 Grounding and Bonding

Provide as specified in Section 33 71 02 UNDERGROUND ELECTRICAL DISTRIBUTION. A continuous ground bus bar shall run the length of the switchgear, the ground bus bar shall be accessible from the back of the switchgear. The ground bus bar must be hard-drawn copper of 98 percent minimum conductivity, minimum size 1/4 by 2 inches.

2.2 MANUFACTURER'S NAMEPLATES

Each item of equipment must have a nameplate bearing, as a minimum, the manufacturer's name, address, model number, and serial number securely affixed in a conspicuous place; the nameplate of the distributing agent will not be acceptable. Include additional information as applicable to

SECTION 26 11 16.00 Page 10 fully identify the equipment. Nameplates must be made of noncorrosive metal. As a minimum, provide nameplates for transformers, circuit breakers, meters, switches, and switchgear.

2.3 WARNING SIGNS

Provide warning signs for the enclosures of transformers having a nominal rating exceeding 600 volts.

a. When the enclosure integrity of such equipment is specified to be in accordance with IEEE C57.12.29 , such as for transformer, provide self-adhesive warning signs on the outside of the high voltage compartment door(s). Sign must be a decal and must have nominal dimensions of 7 by 10 inches with the legend "DANGER HIGH VOLTAGE" printed in two lines of nominal 2 inch high letters. The word "DANGER" must be in white letters on a red background and the words "HIGH VOLTAGE" must be in black letters on a white background.

2.4 SOURCE QUALITY CONTROL

2.4.1 Equipment Test Schedule

The Government reserves the right to witness tests. Provide equipment test schedules 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.

Test Instrument Calibration

(1) The manufacturer must have a calibration program which assures that all applicable test instruments are maintained within rated accuracy.

(2) The accuracy must be directly traceable to the National Institute of Standards and Technology. Test equipment must qualify for the UL standard of Scope of Accreditation ISO ISO/IEC 17025 and

ANSI Z540.1 .

(3) Instrument calibration frequency schedule must not exceed 12 months for both test floor instruments and leased specialty equipment.

(4) Dated calibration labels must be visible on all test equipment.

(5) Calibrating standard must be of higher accuracy than that of the instrument tested.

(6) 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:

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

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

SECTION 26 11 16.00 Page 11

2.4.2 Decibel Tests

IEEE C37.20.3 . Furnish reports of production tests performed on the actual equipment for this project. Required tests must be as follows:

Production Tests

(1) Decibel Test

2.4.3 Transformer Design Tests (Dry-Type)

In accordance with IEEE C57.12.01 and IEEE C57.12.91 . Additionally, IEEE C57.12.80 section 5.1.2 states that "design tests are made only on representative apparatus of basically the same design." Submit design test reports in the same submittal package as the product data, shop drawings, and certificates of transformer losses for each of the specified transformer. Design tests must have been performed prior to the award of this contract.

a. Provide required submittals in a hard-covered binder with index and tabs.

b. Tests must be certified and signed by a registered professional engineer. Engineers stamp and signature must appear on at least the first page of the factory test reports.

c. Temperature rise:

(1) "Basically the same design" for the temperature rise test means a unit-substation transformer with the same coil construction (such as wire wound primary and sheet wound secondary), the same kVA, the same cooling type (AA), the same temperature rise rating, the same insulating class and the same insulating medium as the transformer specified.

(2) Provide temperature rise readings, formulas, calculations of average temperature rise, and description of test method.

d. Lightning impulse:

(1) "Basically the same design" for the lightning impulse dielectric test means a unit-substation transformer with the same BIL and the same coil construction (such as wire wound primary and sheet wound secondary).

(2) IEEE C57.12.91 and IEEE C57.98 . Provide design lightning impulse tests consisting of a reduced full-wave, two-chopped waves, and one full wave test for each phase of the primary and secondary windings of the same transformer.

(3) State test voltage levels.

(4) Provide photographs of oscilloscope display waveforms or plots of digitized waveforms with test report.

(5) Partial Discharge Test per IEEE C57.124 . Provide transformer ratings, description and diagram of test method used, test readings and final results.

SECTION 26 11 16.00 Page 12

2.4.4 Transformer Routine and Other Tests (Dry-Type)

In accordance with IEEE C57.12.01 and IEEE C57.12.91 . Routine and other tests must be performed by the manufacturer on each of the actual transformer 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. Required tests and testing sequence must be as follows:

a. Resistance measurements

b. Phase relation

c. Ratio

d. Insulation power-factor by manufacturer's recommended test method

e. No-load losses (NLL) and excitation current

f. Load losses (LL) and impedance voltage

g. Lightning impulse: Perform the complete design type impulse tests on the transformer primary winding only.

(1) IEEE C57.12.91 and IEEE C57.98

(2) State test voltage levels

(3) Provide photographs of oscilloscope display waveforms or plots of digitized waveforms with test reports.

h. Low frequency dielectric

(1) Applied voltage

(2) Induced voltage

i. Insulation Resistance Test

PART 3 EXECUTION

3.1 FIELD QUALITY CONTROL

3.1.1 Performance of Acceptance Checks and Tests

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

3.1.1.1 Medium-Voltage Circuit Breakers (SF6)

a. Visual and mechanical Inspection

(1) Compare equipment nameplate data with specifications and approved shop drawings.

(2) Inspect physical and mechanical condition.

SECTION 26 11 16.00 Page 13

3.1.1.2 Transformers - (Dry-Type)

a. Visual and Mechanical Inspection

(1) Compare equipment nameplate information with specifications and approved shop drawings.

(2) Inspect physical and mechanical condition.

(3) Verify the presence of transformer surge arresters.

3.1.1.3 Current Transformers

a. Visual and Mechanical Inspection

(1) Compare equipment nameplate data with specifications and approved shop drawings.

(2) Inspect physical and mechanical condition.

SECTION 26 11 16.00 Page 14

DIVISION 26 - ELECTRICAL

SECTION 26 28 00.00 10

MOTOR CONTROL CENTER

PART 1 GENERAL

1.1 SUMMARY

1.2 REFERENCES

1.3 SUBMITTALS

1.4 DELIVERY, STORAGE, AND HANDLING

1.5 MAINTENANCE

1.5.1 Accessories and Tools

1.5.2 Extra Materials

PART 2 PRODUCTS

2.1 MATERIALS AND EQUIPMENT

2.1.1 Rules

2.1.2 Coordination

2.2 NAMEPLATES

2.3 CONNECTIONS

2.4 MOLDED CASE CIRCUIT BREAKERS

2.4.1 Trip Units

2.4.2 480-Volt AC Circuits

2.4.3 120/240-Volt AC Circuits

2.5 WIRING

2.6 CONTROL SWITCHES

2.6.1 General

2.6.2 Switch Features

2.7 TERMINAL BLOCKS

2.7.1 Types of Terminal Blocks

2.7.1.1 Short-Circuiting Type

2.7.1.2 Load Type

2.7.2 Marking Strips

2.8 MOTOR CONTROL CENTERS

2.8.1 Enclosures

2.8.1.1 Unit Compartments

2.8.1.2 Motor Control Center Doors and Covers

2.8.1.3 Horizontal Wireways

2.8.1.4 Vertical Wireways

2.8.1.5 Sills

2.8.1.6 Shutters

2.8.1.7 Thermostatically Controlled Strip Heaters

2.8.2 Buses

2.8.2.1 Horizontal Bus

2.8.2.2 Vertical Bus

2.8.2.3 Ground Bus

2.8.2.4 Neutral Bus

2.8.3 Combination Starters

2.8.3.1 Magnetic Contactors

SECTION 26 28 00.00 10 Page 1

2.8.3.2 Auxiliary Contacts

2.8.3.3 Overload Relays

2.8.4 Molded Case Circuit Breakers in Unit Compartments

2.8.5 Panelboards for Motor Control Centers

2.8.6 Wiring for Motor Control Centers

2.8.6.1 Contractor's Wiring

2.8.6.2 External Connections

2.8.6.3 Terminal Blocks

2.8.7 Control Transformers

2.8.8 Accessories and Control Devices

2.8.8.1 Control Stations

2.8.8.2 LED Indicating Lights

2.8.8.3 Control Relays

2.8.9 Feeder Tap Units

2.8.10 Metering Section

2.8.10.1 Instrument Transformers

2.8.10.2 Ammeters

2.8.10.3 Voltmeters

2.8.10.4 Watthour Meters

2.8.11 Arc Resistance

2.9 FACTORY TESTS

2.9.1 Motor Control Centers Tests

2.9.1.1 Dielectric Tests

2.9.1.2 Operational Tests

2.9.1.3 Short Circuit Tests

2.10 PAINTING

2.11 WARNING SIGNS

PART 3 EXECUTION

SECTION 26 28 00.00 10 Page 2

SECTION 26 28 00.00 10

MOTOR CONTROL CENTER

PART 1 GENERAL

1.1 SUMMARY

These specifications include the design, fabrication, assembly, wiring, testing, and delivery of the items of equipment and accessories and spare parts listed in the Schedule and shown on the drawings.

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; Errata 2016) Electric Meters - Code for Electricity Metering

AMERICAN SOCIETY OF MECHANICAL ENGINEERS (ASME)

ASME B1.1 (2003; R 2018) 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 B187/B187M (2020) Standard Specification for Copper, Bus Bar, Rod and Shapes and General Purpose Rod, Bar and Shapes

INSTITUTE OF ELECTRICAL AND ELECTRONICS ENGINEERS (IEEE)

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

NATIONAL ELECTRICAL MANUFACTURERS ASSOCIATION (NEMA)

NEMA C12.4 (1984; R 2011) Registers - Mechanical Demand

NEMA ICS 1 (2022) Standard for Industrial Control and Systems: General Requirements

NEMA ICS 2 (2000; R 2020) Industrial Control and Systems Controllers, Contactors, and Overload Relays Rated 600 V

NEMA ICS 4 (2015) Application Guideline for Terminal Blocks

SECTION 26 28 00.00 10 Page 3

NEMA ICS 6 (1993; R 2016) Industrial Control and Systems: Enclosures

NEMA/ANSI C12.10 (2011; R 2021) Physical Aspects of Watthour Meters - Safety Standard

NEMA/ANSI C12.11 (2006; R 2019) Instrument Transformers for Revenue Metering, 10 kV BIL through 350 kV BIL (0.6 kV NSV through 69 kV NSV)

NATIONAL FIRE PROTECTION ASSOCIATION (NFPA)

NFPA 70 (2023; ERTA 4 2023) National Electrical Code

UNDERWRITERS LABORATORIES (UL)

UL 44 (2018; Reprint May 2021) UL Standard for Safety Thermoset-Insulated Wires and Cables

UL 489 (2016; Rev 2019) UL Standard for Safety Molded-Case Circuit Breakers, Molded-Case Switches and Circuit-Breaker Enclosures

UL 508 (2018; Reprint Jul 2021) UL Standard for Safety Industrial Control Equipment

UL 845 (2021) UL Standard for Safety Motor Control Centers

UL 1063 (2017; Reprint Jun 2022) UL Standard for Safety Machine-Tool Wires and Cables

1.3 SUBMITTALS

Government approval is required for submittals with a "G" or "S" classification. Submittals not having a "G" or "S" classification are for Contractor Quality Control approval. Submit the following in accordance with Section 01 33 00 SUBMITTAL PROCEDURES:

SD-02 Shop Drawings

Drawings; G , DO

Shop Drawings; G , DO

Motor Control Centers; G , DO

SD-03 Product Data

Equipment; G , DO

Factory Tests

Request For Settings

SD-06 Test Reports

SECTION 26 28 00.00 10 Page 4

Factory Tests

Acceptance Checks And Tests; G , DO

SD-07 Certificates

Motor Control Centers

1.4 DELIVERY, STORAGE, AND HANDLING

Submit copies of such descriptive cuts and information as are required to demonstrate fully that all parts of the equipment will conform to the requirements and intent of the specifications, within 30 calendar days after date of receipt of notice to proceed for approval. Include descriptive data showing typical construction of the types of equipment proposed, including the manufacturer's name, type of molded case circuit breakers or motor circuit protectors, performance capacities and other information pertaining to the equipment. Also sets of characteristic curves of the individual breaker trip element. Ship the equipment as completely assembled and wired as feasible so as to require a minimum of installation work. Properly match mark each shipping section to facilitate reassembly, and provide with removable lifting channels with eye bolts for attachment of crane slings to facilitate lifting and handling. Carefully pack and ship separately any relay or other device which cannot withstand the hazards of shipment when mounted in place on the equipment. Mark these devices with the number of the panel which they are to be mounted on and fully identified. Wrap all finished painted surfaces and metal work or otherwise protect from damage during shipment.

Prepare all parts for shipment so that slings for handling may be attached readily while the parts are in a railway car or transport truck. Sections of equipment crated for shipment must be of such size, including crates, that they will pass through a 8 by 5 -foot hatch opening. Carefully package and clearly mark all spare parts and accessories.

1.5 MAINTENANCE

1.5.1 Accessories and Tools

Furnish a complete set of accessories and special tools unique to equipment provided and required for erecting, handling, dismantling, testing and maintaining the apparatus.

1.5.2 Extra Materials

Furnish spare parts as specified below. All spare parts must be of the same material and workmanship, must meet the same requirements, and must be interchangeable with the corresponding original parts furnished.

SPARE PARTS

Amount Description

2 of each type and size Fuses

1 of each type installed

Circuit breaker auxiliary switch

SECTION 26 28 00.00 10 Page 5

SPARE PARTS

Amount Description

2 for each size ac contactor Operating coils

1 for each size dc contactor Operating coil

2 Complete sets for each size ac contactor

3-pole stationary and moving contact assemblies

1 Complete set for each size dc contactor

2-pole stationary and moving contact assemblies

3 of each type and rating Contactor overload relays, each relay with a complete set of contact blocks

1 Spare set for each heater rating provided

Heater elements

2 for each type Indicating lamp assemblies

1 of each type and rating Control transformer

1 of each type and rating Control relay

1 of each type Contactor auxiliary contact

4 One quart containers Finish paint for indoor equipment

2 One quart containers Paint used for the exterior surfaces of outdoor equipment

4 Keys for motor control center door loc

1 for each type and rating Circuit Breaker

1 for each type and rating Motor Circuit Protector

PART 2 PRODUCTS

2.1 MATERIALS AND EQUIPMENT

Provide materials and equipment which are standard products of a manufacturer regularly engaged in their manufacture and that essentially duplicate items that have been in satisfactory use for at least 2 years prior to bid opening and that conform to the requirements of these specifications. Provide high quality materials, free from defects and imperfections, of recent manufacture, and of the classification and grades designated. All materials, supplies, and articles not manufactured by the Contractor must be the products of other recognized reputable manufacturers.

2.1.1 Rules

Provide equipment conforming to the requirements of NFPA 70 unless more stringent requirements are indicated herein or shown. NEMA rated and UL listed equipment has been specified when available. Provide equipment meeting NEMA and UL construction and rating requirements as specified. No equivalent will be acceptable. Immediately notify the Contracting Officer

SECTION 26 28 00.00 10 Page 6 of any requirements of the specifications or Contractor proposed materials or assemblies that do not comply with UL or NEMA. International Electrotechnical Commission (IEC) rated equipment will not be considered an acceptable alternative to specified NEMA ratings.

2.1.2 Coordination

The general arrangement of the motor control centers, switchboards and panelboards is shown on the contract drawings. Any modifications of the equipment arrangement or device requirements as indicated will be subject to the approval of the Contracting Officer. If any conflicts occur necessitating departures from the drawings, submit details of and reasons for departures for approval prior to implementing any change. Completely assemble all equipment at the factory. The motor control centers and switchboards may be disassembled into sections, if necessary, for convenience of handling, shipping, and installation.

2.2 NAMEPLATES

Provide nameplates made of laminated sheet plastic or of anodized aluminum approximately 1/8 inch thick, engraved to provide white letters on a black background. Fasten the nameplates to the panels in proper positions with anodized round-head screws. Lettering must be minimum 1/2 inch high.

Provide nameplate designations in accordance with lists on the drawings, and as a minimum provide nameplates for the following equipment:

a. Motor Control Centers

b. Individual items of equipment mounted in the Motor Control Centers

Provide equipment of the withdrawal type with nameplates mounted on the removable equipment in locations visible when the equipment is in place.

2.3 CONNECTIONS

Furnish all bolts, studs, machine screws, nuts, and tapped holes in accordance with ASME B1.1 . Provide sizes and threads of all conduit and fittings, tubing and fittings, and connecting equipment in accordance with ASME B1.20.1 . Provide ferrous fasteners that have rust-resistant finish and equip all bolts and screws with approved locking devices.

Manufacturer's standard threads 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 must meet the above requirements.

2.4 MOLDED CASE CIRCUIT BREAKERS

Provide molded case circuit breakers conforming to the applicable requirements of UL 489 and UL 489 . Provide circuit breakers that are manually-operated, that are the quick-make, quick-break, common trip type, and that are of the automatic-trip type unless otherwise specified or indicated on the drawings. Operate all poles of each breaker simultaneously by means of a common handle. Provide operating handles that clearly indicate whether the breakers are in "On," "Off," or "Tripped" position and have provisions for padlocking in the "Off" position.