Attachment_ CRCBF-06 HV Disconnect Switch SECTION 1000.pdf

SECTION 1000

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HV Disconnect Switch

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SECTION 33 71 26.30 – HIGH VOLTAGE DISCONNECT SWITCHES

PART 1 - GENERAL

1.01 SUMMARY:

A. This Section includes the specifications and requirements for all substation high voltage disconnect switches with insulators to be furnished by this contract. Quantities as indicated.

B. Erection and assembly required at the jobsite will be performed by others.

C. Items furnished under this Section shall comply with the requirements of Division 01.

1.02 REFERENCE STANDARDS:

A. Design, construct, test, and assemble all equipment and materials in conformance with the latest revisions and supplements of all applicable NEMA, IEEE, ASTM, OSHA and NESC standards including, but not limited to, the following:

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

a. C2 - National Electrical Safety Code.

b. C29.1 - Test Methods for Electrical Power Insulators.

c. C29.9 - Wet-Process Porcelain Insulators - Apparatus, Post Type.

d. C37.30 - Standard Requirements for High-Voltage Switches.

e. C37.32 - High-Voltage Air Switches, Bus Supports, and Accessories, Schedules of

Preferred Ratings, Construction Guidelines, and Specifications.

f. C37.33 - Rated Control Voltages and Their Ranges for High-Voltage Air Switches.

g. C37.34 - Test Code for High-Voltage Air Switches.

2. National Electrical Manufacturers Association (NEMA):

a. 107 - Methods of Measurement of Radio Influence Voltage (RIV) of High-Voltage

Apparatus.

3. ASTM International (ASTM):

a. A6 - Rolled Structural Steel Bars, Plates, Shapes, and Sheet Piling.

b. A36 – Structural Steel

c. A90 – Standard Test Method for Weight of Coating on Iron and Steel Articles with

Zinc or Zinc-Alloy Coatings

d. A123 - Zinc (Hot-Dip Galvanized) Coatings on Iron and Steel Products.

e. A143 - Safeguarding Against Embrittlement of Hot-Dip Galvanized Structural Steel

Products and Procedure for Detecting Embrittlement.

f. A153 - Zinc Coating (Hot-Dip) on Iron and Steel Hardware.

g. A325 – High Strength Structural Bolts

h. A370 - Test Methods and Definitions for Mechanical Testing of Steel Products.

i. A384 - Safeguarding Against Warpage and Distortion During Hot-Dip Galvanizing of Steel Assemblies.

j. A500 - Cold-Formed Welded and Seamless Carbon Steel Structural Tubing in

Rounds and Shapes

k. A572 - High-Strength Low Alloy Columbium - Vanadium Steels of Structural

Quality.

l. A992 – Structural Steel Shapes

m. F2329 - Zinc Coating, Hot-Dip, Requirements for Application to Carbon and Alloy

Steel Bolts, Screws, Washers, Nuts and Special Threaded Fasteners.

4. Occupational Safety and Health Act (OSHA).

5. American Welding Society (AWS):

a. D.1.1. - Structural Welding Code: Steel.

b. D.2.1. - Structural Welding Code: Aluminum

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6. American National Standards Institute (ANSI).

a. B18.2.1 - Square and Hex Bolts and Screws Inch Series.

b. B18.2.2 - Square and Hex Nuts.

7. Nevada State and Local Ordinances.

B. Acceptable manufacturers are listed in PART 2 of this section. Other manufacturers than those listed may be employed with the approval of the Owner and if the item to be furnished conforms to this specification.

C. Experience:

1. The manufacturer of each item of equipment or material furnished shall be regularly engaged in the fabrication of the item and it shall have an acceptable history of satisfactory, reliable service in outdoor substation use for a period of at least three years under comparable environmental conditions.

2. Newly-developed equipment with less than three years actual service will be considered from established manufacturers only if it has been adequately tested, meets the requirements of this Contract, and is approved by the Owner.

1.03 SUBMITTALS:

A. Submit as specified in Division 01.

B. For the Boulder Flats Switching Station, furnish the following types of drawings

1. Furnish drawings necessary for design, erection, installation, and operation of all equipment and materials furnished including, but not limited to, the following:

a. Complete bill of material including item numbers and manufacturers' catalog numbers.

b. Complete drawings and descriptive bulletins for installation, adjustment, testing, maintenance, and operation of all equipment including bus weldments, connectors, insulators, corona fittings, etc.

c. General outline, nameplate, and internal wiring drawings of all equipment.

d. Schematic diagrams showing all external electrical connection terminal numbers.

e. Insulator outline drawings.

f. Custom mechanical control drawings for each disconnect switch.

g. Drawings showing additional detail if requested by the Owner or otherwise required for installation and maintenance.

2. Standard drawings of equipment which do not indicate clearly the exact size, model number, and optional items to be furnished will be returned to the Supplier for this information before review by the Owner.

1.04 QUALITY ASSURANCE:

A. High Voltage Disconnect Switches shall be manufactured under an established quality assurance program.

1. Supplier shall submit for approval any and/or all quality plans, forms, and procedures applicable to the manufacture of high voltage disconnect switches, if requested.

B. Supplier shall be engaged in the production of such equipment for a minimum of five (5) years and able to supply proof, if requested, of manufacturing at least twenty (20) high voltage disconnect switches of the same type in that time frame.

PART 2 - PRODUCTS

2.01 DISCONNECT SWITCHES:

A. Ratings, Type and Design:

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1. Switch ratings, type, design and mounting for each disconnect switch are listed in the accompanied data sheet(s).

2. Switchblades and related current-carrying parts shall be of aluminum alloy construction and contact-making components shall be of silvered inlay copper or other approved metals (with stainless-steel bolts).

3. Provide with arcing horns.

4. Provide 4-hole NEMA terminal pads at each high-voltage connection.

5. Design to provide smooth, completely controlled simultaneous movement of switchblades throughout entire cycle of operation with mechanism continually loaded to prevent switch from alternately leading or lagging the control.

6. Furnish group-operated mechanism with necessary rods, bell cranks, interphase operating connections, bearings, supports, linkages, and vertical operating pipe. All operating pipe connections shall have set screws. All operating pipes shall be furnished precut to the specific lengths required for the phase spacing and bus height indicated.

7. Provide with permanently double sealed maintenance free automotive steel ball bearing assemblies.

8. Provide for individual adjustment of the operating mechanism of each pole; all hardware shall be fabricated with non-corrodible metal.

9. Provide a semaphore to be located at or near each operating mechanism to give positive indication of the open or closed position of the switch.

10. Operating handles or cranks shall have provision for locking in both the open and closed position.

11. Operating mechanisms shall be located as indicated on attached steel drawings.

12. Provide bolted ground connector and flexible grounding jumper for operating handle.

13. Switch bases shall be heavy-duty galvanized steel.

14. Switches shall be of an essentially maintenance-free design.

15. Switches (without motor operators) shall be provided with the following operating mechanism:

a. Worm gear operating mechanisms shall be operated with a non-detachable crank having a clockwise operation of crank to close switch, with all gears and worms completely sealed, and requiring a torque of no more than 40-foot pounds (54 nm) to operate the switch.

16. All operating mechanisms shall be equipped with a Kirk key interlock system to prevent operation of any switch when associated circuit breakers are closed. Supplier shall coordinate locks through the Owner.

17. Furnish motor operators as indicated conforming to the requirements as specified in

Article 2.02 of this Section.

18. Insulator adapters on the switches shall withstand the same cantilever ratings as the insulators.

19. All live parts shall be assembled on their bases for shipment.

20. Furnish switch insulators for each unit conforming to the requirements as specified in

Article 2.03 of this Section.

B. Acceptable manufacturers:

1. Southern States LLC, Inc.

2. Pacific Air Switch Corporation (PASCOR)

3. PASCOR Atlantic

4. MORPAC Industries

5. USCO Power Equipment Corp. (subsidiary of Hubbell Power Systems, Inc.)

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6. Turner Electric Corporation

7. Royal Switchgear Manufacturing Company, Inc.

2.02 MOTOR OPERATORS:

A. Ratings:

1. 125V DC control power.

2. 120-V ac, single-phase auxiliary power.

3. Gear ratio and motor horsepower shall be sized for proper application with switches.

B. Type and Design:

1. NEMA Type 3, lockable, heavy-duty enclosure.

2. Provisions for manual operation including hand crank with external visible operating rod coupling bar which can be padlocked in both the open and closed, disconnected and engaged positions.

3. Electrically interlocked hand-operated crank with proper storage to be provided when removed. Manual operation shall not be by swing handle on motor-operated switches.

4. Mechanical position indicator.

5. Magnetic brake, which is electrically released, and spring applied; or a dynamic brake which is electrically applied.

6. Control and auxiliary power supply inputs shall be equipped with insulated case circuit breakers.

7. Open, close, and stop push buttons in the motor operator enclosure with provisions for wiring remote controls and interlocks from relay switchboards or supervisory equipment.

8. Reversing and control contactors and limit switches as required.

9. Provide at least twenty auxiliary switch contacts in addition to those required for mechanism control, adjustable over the entire range from switch fully open position to the fully closed position.

10. Auxiliary switches shall be operable during manual operation of the motor operator.

11. Wire out to States Company type ZWM, or approval equal, terminal blocks. All auxiliary switches and control wiring as required by the Owner for connection of external circuits.

12. Space heater with thermostatic control.

13. Operating time (sec.): 10 seconds

C. Acceptable motor operator manufacturers:

1. Southern States LLC, Inc.

2. Pacific Air Switch Corporation (PASCOR)

3. PASCOR Atlantic

4. USCO Power Equipment Corp. (subsidiary of Hubbell Power Systems, Inc.)

2.03 SWITCH INSULATORS:

A. Ratings, Type and Design:

1. Insulators for 230kV switchyard shall be:

a. Nominal system voltage (kV):230

b. Basic impulse level (kV):900

c. Material: Porcelain

d. Type: Station post

e. Cantilever strength: 2750 lbs. Extra High strength

f. Bolt circle, base [inches]:7

g. Bolt circle, top [inches]:7

h. Color ANSI 70 gray

B. Acceptable manufacturers:

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1. LAPP Insulators

2. PPC Insulators

3. Hubbell Power Systems, Inc.

4. NGK-Locke, Inc.

5. Victor Insulators, Inc.

6. Newell-PSN, LLC.

2.04 MAINTENANCE EQUIPMENT AND SPARE PARTS:

A. All spare parts standard with manufactured equipment and materials supplied or required for maintenance.

PART 3 - EXECUTION

3.01 FIELD SERVICES:

A. Correction of errors, discrepancies, or omissions shall be made immediately upon notification from the Resident Engineer in order to prevent delay of construction. All corrections resulting from errors, discrepancies, shipping damage, etc., approved by the Resident Engineer to avoid delay in construction and required for the installation and proper use of equipment shall be paid for by the Supplier.

3.02 SWITCH AND INSULATOR SHIPMENT:

A. All switches, insulators and accessories shall be delivered to the Site in open top trucks or trailers protected by tarpaulin to facilitate unloading by crane.

B. Each item will have an identifying tag and will be listed on the packing list.

C. Provide shipping notice describing each shipment of material and/or equipment at least 15 days in advance of the expected shipping date. At that time, Contractor will advise Manufacturer of acceptable delivery hours.

END OF SECTION 33 71 26.30