CircuitBreaker_33-75-00.pdf

SECTION 33-75-00

HIGH-VOLTAGE SWITCHGEAR AND PROTECTIVE DEVICES

OUTDOOR CIRCUIT BREAKER- GENERAL REQUIREMENTS

PART 1 -GENERAL

1.01 WORK INCLUDED

A. The work consists of furnishing Outdoor Circuit Breaker equipment as herein specified, delivering the Equipment to the substation site, and coordinating with the Owner for receipt and offloading.

Equipment shall be designed, built and delivered completely wired, tested and ready for installation.

B. This section includes referenced standards for design and requirements for warranty, submittals, painting, shipping, and factory and field testing.

C. As used herein, “Manufacturer” shall mean the firm with facilities and expertise, regularly engaged in the design, production, assembly and testing of medium-voltage outdoor vacuum circuit breakers for electric utilities.

D. As used herein, “Equipment Contractor” shall mean the person, firm, or Corporation whose bid is accepted and to whom the Owner has issued a Purchase Order or Contract to supply one or more items of Equipment. This can be either the circuit breaker Manufacturer or their agent or representative.

E. It is the intent of these specifications for the Equipment Contractor to furnish the standard outdoor circuit breaker design of a Manufacturer, complete with standard accessories, but with modifications as detailed in these specifications.

1.02 RELATED SECTIONS

A. The bidding documents are a part of this section as if incorporated herein.

1.03 REFERENCES

The Equipment described by these specifications shall, as a minimum, be built in accordance with applicable standards of the American National Standards Institute, the Institute of Electrical and Electronics Engineers, the American Society for Testing and Materials and the National Electrical Manufacturer's Association as to ratings, characteristics and tests. The work shall conform to applicable provisions of the latest edition or revision of the following publications and standards, except as otherwise specifically stated herein:

A. Institute of Electrical and Electronics Engineers (IEEE):

IEEE C37.04 Rating Structure for AC High-Voltage Circuit Breakers Rated on a

Symmetrical Current Basis

IEEE C37.06 High-Voltage Circuit Breakers Rated on a Symmetrical Current Basis -

Preferred Ratings and Related Required Capabilities for AC Voltages Above 1000V

IEEE C37.09 Test Procedure for AC High-Voltage Circuit Breakers Rated on a

IEEE C37.010 Application Guide for AC High-Voltage Circuit Breakers Rated on a

IEEE C37.011 Guide for the Application of Transient Recovery Voltage for AC High-

Voltage Circuit Breakers

IEEE C37.081 Guide for Synthetic Fault Testing of AC High-Voltage Circuit Breakers

Rated on a Symmetrical Current Basis

IEEE C57.13 Requirements for Instrument Transformers

B. American Society for Testing and Materials (ASTM):

A 123 Specification for Zinc (Hot-Dip Galvanized) Coatings on Iron and Steel

Products

C. National Electrical Manufacturers Association (NEMA):

SG 4 Alternating Current High-Voltage Circuit Breakers

1.04 DESIGN AND PERFORMANCE REQUIREMENTS

The workmanship, design and materials shall be of the highest quality and the most suitable for the application. The materials and equipment shall be new, of proven manufacture and free from defects. The design shall provide maximum mechanical and electrical strength and shall include ample safety factors to cover the maximum voltage rating and interrupting capacity rating of the Equipment. The Equipment shall be of dead tank design and environmentally protected.

1.05 SUBMITTALS

The Equipment Contractor shall provide a complete Schedule of data submittals within ten days of the receipt of Purchase Order.

The Equipment Contractor shall submit Adobe PDF copy of the required Submittals by e-mail for review and approval by the Owner. Review by the Owner or their representative is for determining conformance with this Section and related documents. It does not relieve the Manufacturer of responsibility for quantities and compatibility of components.

Submittals will be marked with any comments and returned to the Equipment Contractor by e-mail within ten business days after receipt, if possible. Manufacturing shall not begin until the required Shop Drawings are reviewed and approved with “No exceptions noted” or “Approved as noted”.

A. Shop Drawings

Shop drawings shall be submitted within 60 days of the receipt of Purchase Order.

1. Circuit Breaker submittals shall include:

a. Equipment outline and assembly showing: total weight, all principal features and dimensions, bushing numbering plan, and required foundation bolt sizes and locations

b. Breaker Nameplate

c. Bushing data

d. Ratio curves for bushing current transformers for each ratio and at various volt-ampere burdens

e. Diagrams of bushing current transformer connections, showing number of turns, polarity, ratios and connections to terminal blocks

f. Detailed views of control cabinet, CT junction box or other enclosures, including equipment layout, nameplates, conduit entrance, and terminal block orientation and numbering

g. Separate AC and DC schematic diagrams.

h. Full size control wiring and interconnection diagrams, based on actual physical arrangement of terminal blocks

i. Bill of Material / Parts bulletin.

j. Description of Manufacturer’s paint process

k. Manufacturer’s recommended installation tests.

2. Drawing title blocks shall include the Owner’s name, purchase order number, and the name of the substation.

B. Factory Tests

1. All production tests included in IEEE C37.09 shall be made on each Circuit Breaker. In addition, an operation recording test shall be made at the factory and copies of the charts shall be furnished to the Owner as record information.

2. Certified test reports for tests performed by the Manufacturer shall be submitted for review prior to shipment.

C. Instruction Manual

The Equipment Contractor shall provide one bound paper copy of an instruction manual, conveniently mounted inside the door of each circuit breaker, plus three additional copies. The cover sheet shall reference the applicable serial number(s), date of manufacture, and the Owner’s name and purchase order number. The instruction (operation and maintenance) manual shall contain, as a minimum:

1. Instructions for receiving, storing and installing the Equipment; including recommended installation procedures and tests

2. Operating instructions

3. Maintenance instructions; including preventive maintenance schedule, required lubricants, adjustment values, and recommended periodic testing

4. Final approval drawings and assembly drawings; full size, or reduced to 11”x17” if legible

5. Test data and curves

6. Original manufacturer's catalog or part numbers for all components, including, without limitation, relays, switches, coils, fuses, mechanism components and all other parts which might require maintenance or replacement in the normal operation of the device.

D. As-Built

Final "as-built" submittals shall be furnished on a USB drive in a format compatible with AutoCAD 2025 (two copies).

1.06 DELIVERY, STORAGE AND HANDLING

Deliver the Equipment with all manufacturers' tags and labels intact. Handle and store the Equipment in such a manner so as to avoid damage to the units.

1.07 WARRANTY

A. The equipment Manufacturer's warranty period shall extend a minimum of two years from date of delivery.

B. The equipment Manufacturer's extended warranty shall include all parts of the Equipment regardless of original manufacturer.

PART 2-PRODUCTS

2.01 MATERIALS AND EQUIPMENT

A. All material and equipment shall be new, approved and labeled, where required, by UL. Only products by manufacturers regularly engaged in production of specified units will be acceptable.

B. Where two or more units of the same class of equipment or materials are required, provide all units from a single manufacturer.

C. Provide materials and equipment of suitable material to perform satisfactorily when exposed to conditions of project site.

2.02 ENCLOSURES

Enclosures for operating mechanism, compressors or pumps, wiring terminations, and relays and controls shall be weatherproof stainless steel or aluminum, mounted on the supporting framework.

A. All enclosures shall be mounted not less than 18 inches above the framework baseplate.

B. All enclosures shall be sufficiently rigid to prevent warping of doors and to ensure positive operation of doors and latches. Design of the enclosures shall be such that overlapping metal surfaces are sealed to prevent corrosion. Welds, if used, shall be full-penetration throughout.

C. Doors shall be hinged and shall have heavy duty 3-point latches. Hinges and pins shall be stainless steel. Each door latch shall be lockable in the latched position with a padlock having up to a 3/8-inch shackle and a one-inch clear opening when locked closed. Devices shall be provided on the hinge end of doors and swing panels to hold them in the open position while work is being performed in the cabinet.

D. A conduit entrance with removable cover plate shall be located in the bottom of each enclosure.

Location of the entrance(s) in the mechanism housing(s) shall be such that remote cables can be easily terminated on terminal blocks without routing through the operating mechanism(s).

E. Suitable ventilating holes shall be provided and located in each enclosure to permit proper air circulation. The vents shall be durable, maintenance free, and designed to prevent entry of water and insects.

F. One or more space heaters shall be furnished and mounted in each enclosure to prevent condensation.

G. All enclosures shall be securely grounded to the equipment frame.

H. Provide breather and drain fittings in all raceways between enclosures, if applicable, to prevent condensation or trapping of moisture.

2.03 METAL PREPARATION AND PAINTING

A. Galvanized parts furnished on the equipment shall be hot dip galvanized in accordance with ASTM A123.

B. Prior to painting, all surfaces shall be cleaned by sandblasting, shot-blasting, or be solvent-, steam-or pressure-washed to remove all dirt, grease, rust or mill scale.

C. After cleaning, all surfaces shall be degreased using an appropriate commercially available degreasing solution and rinsed with clean water and dried prior to application of the primer coats.

D. After the metal has been cleaned and pretreated, it shall be primed and painted by the Manufacturer’s best quality paint process suitable for the environment of the equipment installation. Color shall be ANSI 61 or ANSI 70 gray.

E. Complete painting procedures must be submitted to the Owner for review. Written acceptance must be received prior to paint application.

F. For a spray-type process, two coats of an epoxy primer shall be applied to a minimum thickness of

1 mil per coat. Adequate drying time shall be allowed between coats to insure proper bonding.

The primed material surface shall be sprayed with three finish coats of the manufacturer's best quality paint. Each coat shall have a minimum dry thickness of 1 mil for an overall dry film thickness of 5 mil, including finish and prime coats.

G. The interior surfaces of the equipment cabinets and control compartments shall be treated and finished to prevent rust and corrosion.

2.04 NAMEPLATES

Stainless steel nameplates shall be furnished in accordance with IEEE C37.04, mounted at a height for easy reading. All pertinent data of the circuit breaker operating mechanism, current transformers and accessories shall be marked on the associated equipment nameplate. The Owner’s purchase order number shall be added to the equipment nameplate. Appropriate instructions and warning signs shall be located at essential locations.

PART 3-EXECUTION

3.01 SHIPMENT, DELIVERY AND INSTALLATION

A. The Equipment shall be completely assembled, wired and tested at the factory. All necessary provisions shall be made to insure that Equipment is maintained in a dry condition.

B. Circuit Breakers shall be shipped in the position (open or closed) as recommended by the

Manufacturer. The Equipment shall be shipped to its destination upright and as complete as possible consistent with shipment limitations and protection of the Equipment.

C. The Equipment Contractor shall advise the Owner not less than ten days in advance of the method of shipment and anticipated date of arrival. Delivery shall be scheduled on normal business days during normal business hours. Final notice of at least 48 hours (not counting weekends and holidays) must be given prior to delivery to enable the Owner to make necessary arrangements.

1. Notice shall be given to:

Michael Poucher Director City of Bartow Electric Department 915 Stearman Street Bartow Florida, 33830 Office: 863-534-0142

D. The Equipment furnished hereunder shall be delivered to the Owner complete and ready for installation. The Equipment Contractor shall furnish any special tools required for assembly and installation, and shall furnish touch-up paint to match any painted surfaces.

1. If spare parts are included in the Purchase Order, they shall be furnished along with the shipment of the equipment. Spare parts which are sensitive to humidity shall be sealed in appropriate airtight containers complete with desiccant.

E. The Equipment Contractor shall make all necessary provisions required for the assembly, handling, and transportation of the Equipment, and shall coordinate with the Owner for receipt and offloading.

F. The Equipment Contractor shall assume responsibility and handle all claims if there is damage in transit.

G. The equipment foundations will be provided by others. The Owner or their substation contractor will place, level and secure the Equipment on the foundations. Connections to source, load, and ground terminals, and connections of low voltage power, CT, and control circuits to incoming terminals will also be provided by others.

3.02 INSTALLATION TESTS

A. Upon the Owner's request and with separate authorization, the Equipment Contractor shall make available a fully qualified factory-trained service engineer to instruct Owner's personnel in the proper operation, adjustment, test, and maintenance of the Circuit Breakers.

B. For Bidding purposes, assume all work involved in testing and startup of the Circuit Breakers will be performed by others.

C. The testing procedure will include the following anticipated elements.

1. A complete outline of the testing procedures will be reviewed by the Engineer, and comments will be incorporated before installation testing commences at the site.

2. Circuit Breaker tests will include the recommended tests of the Manufacturer. In addition, a test of contact alignment, a Ductor Resistance Test, and a Hi-Pot Test will be performed.

3. All current transformers will be checked for ratio, saturation excitation, and polarization. The correct location and polarity as per identification marking will be verified.

4. Copies of a complete written report will be submitted to the Engineer, identifying test equipment, the test procedures followed, and the “as-found” and “as left” condition of equipment tested.

5. The Engineer will receive final field test results, including the technician’s field copied test sheets, before the Equipment is considered ready to be put into service.

3.03 FIELD SERVICES

The services of a fully qualified factory-trained service engineer shall be made available in accordance with the following schedule:

A. A fully qualified service engineer must be available upon 24-hours notice and qualified shop facilities must be available within a radius of 400 miles of the Owner.

END OF SECTION