Attachment_1_-_Specifications_1.pdf

Minidoka Switchyard High Voltage Circuit Breakers

1972 & 2272

Minidoka Project – Idaho

This is a supply acquisition.

Solicitation Number 140R1023Q0002

138kV Circuit Breakers 1972 & 2272 Minidoka Project - Idaho Solicitation Number 140R1023Q0002

TABLE OF CONTENTS

SECTION 1 - GENERAL REQUIREMENTS

SECTION 2 - DETAILED SPECIFICATIONS

SECTION 3 - PRICING SCHEDULE

SECTION 4 - DRAWINGS AND PHOTOGRAPHS

138kV Circuit Breakers 1972

& 2272

Minidoka Project - Idaho

SECTION 1 - GENERAL REQUIREMENTS

1.1 DELIVERY AND SHIPPING

A. The Bureau of Reclamation desires a delivery date on or before September 15, 2023. Shipping shall be FOB destination. The Project Site address is:

Minidoka Power Plant

951 E Minidoka Dam Road

Rupert, ID 83350

B. The complete breaker or, if disassembled for shipment, any separate pieces will be packed so that they can be stored outdoors in an unprotected environment until the units are installed. The time between delivery and installation could be over a year. No inside storage is available. The outdoor storage conditions will be severe with extremes in temperature, wind, and precipitation normally experienced for the area.

C. If the apparatus is shipped in an unassembled state each part shall be carefully packed for shipment. If items besides the bushings must be disassembled for shipment, they shall be "match-marked". All units and their containers shall be "piece-marked" and shall show the purchase order number and serial number of parts contained.

D. On the same day that any shipment to site is originated, a transmittal, including the following, shall be forwarded to the Contracting Officer via email:

1. Packing List

2. Bill of Lading

3. Packing list shall also accompany each shipment.

1.2 RECLAMATION POINTS OF CONTACT

Project Manager:

Technical Expert:

Contracting Officer:

1.3 WARRANTY

A. Manufacturer shall warrant to the Bureau of Reclamation that the apparatus or services to be furnished hereunder will be of the highest quality and free from defects in material, workmanship, and title and will be of the kind designated in the pertinent purchase order. The Manufacturer's warranty shall be effective for a period of sixty (60) months after installation, commissioning and energization. Terms of the Manufacturer's circuit breaker warranty shall be included in the quote, including any required installation methods, calibration, and testing.

1.4 INSPECTION

A. A representative of the Bureau of Reclamation shall be allowed free access at a reasonable time to the Manufacturer's shop for inspection of the equipment or any of its parts. Any work or material found to be defective, or which does not meet the requirements of this Specification may be rejected and shall be replaced by the Manufacturer at his own expense. Such inspection, however, shall not relieve the Manufacturer from responsibility for the quality and correctness of the work.

1.5 TESTING AND FIELD ENGINEERING

A. The Circuit Breakers shall be assembled and tested at the factory for satisfactory alignment, operation, and electrical integrity. Refer to Section 2.14.

B. The Bureau of Reclamation reserves the right to be present at the factory for testing of any of the breakers. Manufacturer shall provide testing schedule to the Bureau of Reclamation 30 days prior to starting of factory tests.

C. A Certified copy of the test report shall be sent to the Bureau of Reclamation Project Manager following testing of the circuit breakers and prior to shipment to site.

D. The Manufacturer, at their discretion, may provide a field service engineer to conduct an evaluation of the apparatus and other material during delivery to site. Costs of the field service engineer for this purpose, shall be included in the manufacturer’s base quote.

E. Provide a list of required field tests to be performed after assembly and installation.

END OF DETAILED SPECIFICATIONS

SECTION 2 - DETAILED SPECIFICATIONS

2.1 SCOPE

This Specification details manufacturing, shop testing, delivery, and unloading at site for two (2)

138 kV, 3-pole, single throw, dead tank, 60 hertz, outdoor, single-pressure (puffer) sulfur hexafluoride (SF6) gas insulated circuit breakers. The equipment is to be used in the Minidoka switchyard approximately 12 miles northeast of Rupert, Idaho, in Minidoka County.

2.2 GENERAL

A. Work to Be Provided

1. The work to be provided by Contractor under this specification shall include the following:

a. Power circuit breakers designed and rated for service as specified herein.

b. All shop tests and inspections specified and performed.

c. Schedules, drawings, manufacturing and quality procedures, test reports and other information and documents specified herein.

d. Fabrication and delivery of a breaker base and frame so the bushing height is approximately 14 feet above the concrete base structural slab elevation of 4250 feet shown on drawing 17-D-1609, 17-D-1646, 17-D-1597 and 17-D-1642.

e. Breaker provided that fits on the existing concrete slab shown on drawing 17-D-1609 and

17-D-1646.

f. Breaker assembly provided such that the control cabinet is facing the breaker’s center and perpendicular to the long axis of the mounting slab. Reference photographs of the existing breakers and drawing 17-D-1597 and 17-D-1642.

g. Breaker assembly provided such that bushing orientation matches existing. Reference photograph for the “Circuit Breaker JY6A (2272) Orientation” and “Circuit Breaker JY1A

(1972) Orientation”. Also, reference drawing 17-D-1597 and 17-D-1642 for proper bushing alignment and arrangement.

h. Specifications and installation requirements for anchoring hardware.

i. Dis-assembly at factory if required for shipment.

j. Packaging of breaker and pieces for transport.

k. Delivery of equipment to Minidoka Powerplant.

l. Unloading of circuit breakers at location designated by the Government at Minidoka

Powerplant.

m. On-site manufacturer supervision of installation.

B. Work by Others

1. The following work will be provided by others:

a. Lifting, and placement on the foundations.

b. Installation onto existing foundations including anchor bolts.

c. Assembly on site under supervision of manufacturer’s field engineer.

d. On-site testing under supervision of manufacturer’s field engineer.

e. External conduit and wiring.

f. All bus work, power and control wiring external to the power circuit breakers including interface cabinet.

g. Control power sources.

2.3 CODES AND STANDARDS

A. Work provided under this specification shall be in strict conformance with the latest edition and latest addenda thereto, as of the time work is performed, of the applicable codes, standards, regulation procedures and tests of the following organizations:

1. American National Standards Institute (ANSI)

2. American Welding Society (AWS)

3. Association of Edison Electric Illuminating Companies (EEI)

4. American Society for Testing Materials (ASTM)

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

a. IEEE Std C37.04

b. IEEE Std C37.09

c. IEEE Std C37.010

6. Insulated Cable Engineers Association (ICEA)

7. American Society of Mechanical Engineers (ASME)

8. National Electrical Manufacturers Association (NEMA)

9. National Electrical Code (NEC)

B. Materials and equipment covered by OSHA shall be approved by a Nationally Recognized

Testing Laboratory.

C. In the event a conflict occurs between these codes and the specification included subsequently herein, the more stringent requirements shall govern.

2.4 RATINGS

A. Nominal System Voltage (kV, rms): ...................................................................... 138 (Elev. 4,250 ft.)

B. Rated Voltage Ur (kV, rms):

C. Rated Full Wave Lightning Impulse Withstand Voltage Up (kV, peak):

D. Rated Continuous Current Ir, (Amp, rms at 60Hz): …............................................ 1,200 minimum

E. Rated Short-Circuit Current Isc, (Amp, rms Symmetrical at rated maximum kV): 40,000 minimum

F. Rated Closing and Latching Current, (Amp, peak): ............................................... 104,000 minimum

G. Rated Interrupting Time (ms): …............................................................................ 50 maximum

H. Control Voltage (Volts DC): …

I. Auxiliary Power (Volts AC): ….............................................................................. 120/240

J. Spring Recharge Motor (Volts AC): …................................................................... 120/240

K. Remote Switching Capability: …............................................................................ Yes

L. Rated Frequency fr (Hz): …

2.5 ENVIRONMENTAL CONDITIONS

A. The circuit breaker shall perform as intended at temperatures from -37°C through 42°C, at wind loadings through 85 miles per hour, and at altitude of 4250 feet.

B. The circuit breakers shall have a moderate seismic withstand rating per IEEE 693.

2.6 CONSTRUCTION

A. 3-pole, single throw, dead tank, 60 hertz, outdoor, single-pressure (puffer) sulfur hexafluoride

(SF6) gas insulated.

B. An indicator shall be furnished to show the presence of adequate gas pressure.

C. A built-in, pressure-relief device shall be furnished.

D. Electrical and mechanical position indicators easily seen from outside of control cabinet with doors closed that give positive indication of circuit breaker contact positions.

E. Breaker painted ANSI #70 grey. Paint must be ‘lead- and chromate-free’.

F. The circuit breaker shall be completely wired at the factory and ready for connection of external wiring to the circuit breaker terminal blocks.

G. The breaker shall be equipped with two electrically and mechanically independent redundant trip circuits.

H. No overcurrent devices shall be used in the breaker tripping DC control circuits.

I. A disconnecting device shall be provided in the main DC control circuits to simultaneously disconnect the positive and negative DC potential to the operating mechanism housing.

J. Disconnecting and overcurrent interrupting devices are required in each operating mechanism cabinet for protection and isolation of the AC power to heaters, motors, lights, and other accessories.

K. Factory installed conductors between exterior breaker cubicles shall be grouped in standard control cables not smaller than #12 AWG each and routed in rigid galvanized steel conduit. Each conductor between breaker cubicles shall be marked on both ends with an identification system to allow cross reference with the schematic diagram.

L. A "Trip-Close", spring return to normal control switch shall be provided in the operating cabinet with red and green indicating lamps to show breaker status. Status shall also be indicated by mechanical device operated by linkage.

M. Provide one “52” auxiliary switches with a minimum of six “a” and six “b” contacts for customer use. Contacts shall be rated for 130VDC and 120VAC use.

N. A 12" x 1" x 1/4" copper bar shall be mounted inside the control cabinet and grounded to the frame of the breaker. The cable shields and spare circuits shall be terminated on the copper bar.

O. A breaker operation counter shall be provided with no less than a 9999-count capacity to register breaker operations.

P. Each control box shall have a weatherproof, separately fused, 15-amp, 120 VAC, 2-pole, 3-wire, polarized, duplex, grounded receptacle outlet with a built-in ground fault circuit interrupter. The receptacle will be mounted internal to the control box. Standard NEMA 5-15R configuration is required. A shock-resistant light with safety globe shall be mounted in the control cabinet. The light shall be activated by a door operated 120-volt switch.

Q. One or more heaters capable of continuous operation shall be supplied to prevent moisture condensation in the control cabinet, the operating mechanism housings and in any auxiliary housing which may be furnished. Additional heaters with thermostatic control shall be provided, if necessary, to maintain normal operation of the mechanisms. When more than one heater per cabinet is furnished, at least one heater shall be thermostatically controlled. Heaters shall be installed with electrical connections situated to minimize deterioration of the insulation of supply and other wires. A separate circuit breaker shall be provided in the control cabinet for each heater circuit. The heater circuits shall be independent of any other circuit.

R. The breaker shall be equipped:

1. To trip open when gas pressure (dielectric) is falling but is still high enough to trip safely.

2. To prevent tripping when gas pressure (dielectric) falls to a value below which breaker cannot safely interrupt at full interrupting rating.

3. To prevent closing when gas pressure (dielectric) falls to a value below which breaker cannot safely close and subsequently interrupt at full interrupting rating.

4. To prevent breaker closing if the charging spring does not reach a predetermined charged position in predetermined time.

5. With a gas pressure alarm for each pole if not located in a common pressure chamber.

6. With one pressure gauge for common pressure systems and one pressure gauge for each pole where common pressure is not maintained.

7. To be capable of a fast reclose cycle without derating.

8. To be capable of 180-degree out of phase switching.

2.7 OPERATING MECHANISM

A. The mechanism shall be spring operated. The charging motor shall be 120/240VAC and the spring charging mechanism shall allow for manual charging of the open and close springs.

B. External provisions for position indication, operation, and locking.

C. Thermal relays in each motor phase set to protect motor from overload conditions upon starting or other normal operating conditions.

D. The breaker must be capable one open and one close-open operation before recharging is necessary.

E. The mechanism will be designed to permit routine maintenance on the circuit breaker.

F. Operating mechanism shall be powered by 125 VDC control voltage provided by Government.

2.8 TRIP FREE OPERATION

A. On either manual or electrical closing, the circuit breakers shall be trip free, i.e., should the circuit breaker be inadvertently closed into a fault sensed by user furnished relaying, the breakers shall trip immediately.

B. The breakers shall be furnished with a standard type 52 (X-Y) anti-pump control circuit.

2.9 FRAME AND MOUNTING

A. Circuit breakers shall be frame mounted. The frame shall:

1. Provide a solid base for breaker to prevent excessive breaker movement during breaker operations (trip, close, charging, etc.).

2. Be anchored to the top of existing concrete slabs shown on drawings 17-D-1609 and 17-D-

1646.

3. Not extend beyond the limits of the breaker slab as shown on drawings 17-D-1609, 17- D-

1597 and 17-D-1642 when properly orientated with the control cabinet facing upstream, and the center-phase bushings connection aligned to match the existing.

4. Provided to raise the lowest live part of the breaker bushing connections to an approximate height of fourteen (14’) feet above the top of the slab elevation of 4250 as shown on 17- D-

1597 and 17-D-1642.

5. Meet moderate seismic rating.

B. All exterior exposed surfaces of ferrous metalwork shall be galvanized. This is not necessary for stainless steel parts.

C. All exterior conduits shall be rigid metal conduit.

D. Provision for connection of the plant ground grid shall be made by providing a grounding pad on the breaker near the base.

E. Each tank shall be constructed so that the bushing current transformers, contacts and interrupters are attached with removable hardware, not welding.

2.10 BUSHINGS

A. Provide details of the external bushing connections and drawings so proper connectors can be purchased by the Government.

B. Bushing Type: Wet process, homogeneous, commercial-grade porcelain, free from cavities or other flaws; ANSI #70 Grey.

2.11 BUSHING CURRENT TRANSFORMERS

A. Current transformers shall be provided as specified in accordance with NEMA SG4 and IEEE

C57.13.

B. Distribute turns between any two taps on secondary winding uniformly along entire coil.

C. All secondary leads, including all taps for each transformer shall be brought out to shorting terminal blocks located in the control cabinet.

D. Current transformer ratings shall be as follows:

CT Location

(side of breaker)

CT Description CT Rating Accuracy Class

(minimum)

Continuous

Thermal Rating

@ 55 deg C

(minimum) Main Bus/WY#A

Disconnect Side, Outermost CT

Relay Class CT -

QY#D

KY1A/KY2A

differential CT

3Y-1200/5 A

(multi-ratio)

C800 1.5

Main Bus/WY#A

Disconnect Side, Innermost

CT

Metering Class CT

- QY#C Breaker

Failure Relay &

Meters

3Y-100/5 A

(single-ratio)

0.3B-1.8 2

Disconnect

YY#B Side, Outermost

CT

Relay Class CT -

QY#B Bus

Differential CT

3Y-1200/5 A

(multi-ratio)

C800 1.5

Disconnect

YY#B Side, Innermost

CT

Relay Class CT -

Spare 3Y-1200/5 A

(multi-ratio)

C800 1.5

2.12 CONTROL CABINET

A. A weatherproof steel cabinet shall be mounted on the circuit breaker and shall contain, as a minimum, the following equipment:

1. Operating mechanism.

2. Removable conduit plate or sufficient knockouts for bringing in conduits.

3. Bottom conduit entry.

4. Disconnecting and overcurrent interrupting devices for individual protection of control circuits, heaters, and spring motor. All wiring in the cabinet shall be neat in appearance. The size of the cabinet shall be large enough to provide easy access to all parts and terminal boards.

5. Metal holders inside cabinet to hold instruction books and manufacturer provided special tools.

B. The control cabinet shall be NEMA 3R rated and coated to ANSI 70 gray. Ensure enclosure is equipped with hinged access doors equipped with penta head locking bolts and provisions for padlocking.

C. The control cabinet shall have a stainless-steel nameplate with breaker information including ratings, CT ratios and polarity, and CT locations.

D. Control and Secondary Wiring

1. SIS wire shall be used for the internal breaker wiring and for any wiring in the control cabinet. Wire should be rated at 600 volts and 90-degree C. Only stranded wires of adequate current- carrying capacity shall be used in the apparatus. However, in no case shall stranded wire smaller than No. 12 AWG be used. Secondary circuits of CT circuits shall be No. 10

AWG.

2. Ring-tongue terminals shall be used for control and secondary wiring. Spade, slotted spade, flanged spade, and hook terminals are not acceptable. Ring-tongue terminals shall be sufficiently strong to prevent their breakage under conditions of vibration inherent in the equipment in which they are installed. Terminals shall have insulated ferrules whenever the spacing between the terminals, or their projection above or below a terminal board, or other, is such that they can make contact with one another.

3. Terminal blocks furnished by the Contractor shall have No. 10 screws which screw directly into the threaded contact strips. The contact strips shall have sufficient thickness to ensure that torque applied to the No. 10 screws to hold the terminal lugs to the contact strips will not damage the threads in the tapped holes. The screws shall not bottom out in the terminal block, nor shall the terminal block be provided with imbedded captive nuts. The contact strips shall be separated by insulated barriers.

4. The secondary leads of all taps of all current transformers shall be wired to shorting- type terminal blocks. All leads and corresponding terminals on the terminal blocks shall be identified. The terminal blocks shall be mounted in the control cabinet. A separate terminal block shall be provided for each current transformer.

5. Disconnecting and overcurrent interrupting devices are required for electrical protection. All control, auxiliary power, and alarm circuit including spare contacts, shall be completely wired by the Manufacturer. Connections to Government external circuits will be made by the installation contractor.

6. The terminal blocks shall be provided with permanently engraved markings corresponding to those of the Manufacturer’s wiring diagram and shall have space provided on the marking strip for inscription by the Purchaser.

7. Wiring shall be marked using printed, permanent, tags on both ends. Handwritten tags will not be accepted.

8. All wiring leaving an enclosure shall leave from terminal blocks and not from other devices in the enclosure.

9. Auxiliary equipment such as terminal blocks, auxiliary relays, or contactors shall be readily accessible.

10. Terminal blocks for external connections shall be grouped in the instrument and control compartment for easy accessibility unrestricted by interference from structural members and instruments. Sufficient space shall be provided on each side of each terminal block to allow an orderly arrangement of all leads to be terminated on the block. Arrangement of circuits on terminal blocks shall be such that all connections for one circuit plus any spare conductors shall be on adjacent terminals.

11. Wiring in the control box and those portions which pass through conduit shall not be spliced.

12. All control, indicating, and signal devices including spare contacts, shall be completely wired to terminal blocks in the control cabinet, using conduit as necessary for wiring protection.

2.13 MECHANICAL ACCESSORIES

A. One (1) complete set of special tools and equipment required to dismantle/reassemble the breaker for maintenance shall be furnished. Studs, nuts, or other devices other than United States Standard will be considered as required special tools.

B. The breaker shall be capable of being picked up by the lifting eyes, moved and reset on the foundation with only minor readjusting and realigning prior to operation. Provisions shall be made for securing the base to the foundations.

2.14 REQUIRED FACTORY TESTING

A. Factory performance testing shall be completed in accordance with IEEE C37.09.

B. Manufacturer shall not perform dielectric withstand tests on the circuit breaker.

C. Perform power-factor or dissipation factor tests on each pole.

D. Test each current transformer in accordance with IEEE C37.09 and C57.13 except for partial discharge tests.

E. Certification only of continuous thermal current, thermal short-time, and mechanical short-time current ratings.

F. Winding resistance.

G. Bushing routine tests in accordance with IEEE C57.19.00.

H. Provide a written report of the factory performance testing prior to shipment.

2.15 REQUIRED FIELD TESTING

A. On-site manufacturer supervision of installation to ensure these specifications and manufacturer’s parameters are met and warranty terms are followed.

B. A detailed list of tests to be performed after erection.

2.16 SPARE PARTS

A. The Contractor shall provide and include in the quoted price the following spare parts:

1. One complete porcelain bushing, with gaskets crated for long-term storage.

2. One complete set of gaskets for all air, gas and oil tight fittings.

3. One spare control switch of each type used.

4. One spare relay of each type used.

5. All sets of replaceable arcing contacts, including auxiliary current-carrying contacts, both moving and stationary, required for the breaker.

6. One complete set of closing resistors and capacitors.

7. One set of devices required for refilling breaker.

2.17 DRAWINGS, MANUALS, AND DESCRIPTIONS

A. The following drawings and descriptions shall be delivered with the breakers:

1. One paper set of certified drawings.

2. One electronic set on CD-ROM of disassembly and assembly instructions.

3. Three paper sets of Installation, Operations and Maintenance Manuals.

4. One electronic set on CD-ROM of Installation, Operations and Maintenance Manuals.

5. One paper set of Equipment Specification Sheets and Parts List (can be part of O&M manual).

6. One electronic set on CD-ROM of Equipment Specification Sheets and Parts List.

7. One set of AutoCAD (release 2010 or later) certified drawing files on CD-ROM or another disk.

8. Factory Performance Test Reports on CD-ROM described in Section 2.14.

B. The drawings provided will include detailed and complete drawings for the following:

1. Outline including complete material list which includes bushing and stud size.

2. Engineered base and anchor bolt drawings.

3. The as-installed field drawing showing location on the concrete slab in plan and elevation views.

4. Nameplate.

5. Accessory schematic diagram.

6. Control schematic diagram.

7. Breaker wiring diagram.

8. Control cabinet wiring diagram.

9. Bushing Current Transformers.

10. High Voltage connector details.

11. Interrupter removal drawing showing required maintenance clearances.

END OF DETAILED SPECIFICATIONS

SECTION 3 - PRICING SCHEDULE

SUPPLIES OR SERVICES AND PRICES

3.1 PRICE SCHEDULE

A. Offers will be considered for award on the following Price Schedules, but no offer will be considered for award on only a part of the Price Schedules.

B. Offers are subject to the terms and conditions of this solicitation.

C. Definitions:

1. CLIN – Contract Line-Item Number.

CLIN Supplies or Services Quantity and Unit

Unit

Price

Amount

1 (2) 138kV Circuit

Breakers

For the lump sum of $

2 Spare Parts For the lump sum of $

3 Extended Warranty For the lump sum of $

TOTAL FOR PRICE SCHEDULE $_______________

END OF PRICING SCHEDULE

SECTION 4 - DRAWINGS AND PHOTOGRAPHS

The following drawings are included for Information Only:

Sheet

No.

Drawing No. Title

Electrical

1 17-D-1308 Minidoka Powerplants, Switchyards and Substation Switching Diagram

2 17-D-1592 Minidoka 138-kV Substation General Arrangement Plan

3 17-D-1593 Minidoka 138-kV Substation Bays Y4, Y5, & Y6 Plan

4 17-D-1594 Minidoka 138-kV Substation Bays Y1, Y3, Y7 & Y8 Plan

5 17-D-1597 Minidoka 138-kV Substation Bays Y3 and Y1 Section A-A and B-B

6 17-D-1642 Minidoka 138-kV Substation Bays Y7 and Y8 Section K-K and L-L

7 17-D-2034 Minidoka Powerplant Unit 6 and 7 Main Single Line Diagram

8 17-D-2045 Minidoka 138-kV Substation Main Single Line Diagram

Civil

9 17-D-1606 138-kV Interconnection Substation Grading and Plot Plan

10 17-D-1607 138-kV Interconnection Substation Foundations General Plan

11 17-D-1609 138-kV Interconnection Substation Foundations Outline and

Reinforcement

12 17-D-1610 138-kV Interconnection Substation Foundations Outline and

Reinforcement

13 17-D-1612 138-kV Interconnection Substation Steel Structures Embedded Material

14 17-D-1613 138-kV Interconnection Substation Steel Structures 138kV Take Off

Structure General Plan and Elevations

15 17-D-1646 138-kV Interconnection Substation Foundations Outline and

Reinforcement

4.1 GENERAL

A. Photographs are solely for information of the Contractor.

B. Government assumes no responsibility for deductions, interpretations, or conclusions made by

Contractor based on information made available by Government.

Photograph – Circuit Breaker JY6A (2272) Orientation

Photograph – JY6A (2272) Nameplate

Photograph – JY6A (2272) Nameplate

Photograph – JY6A (2272) Concrete Foundation

Photograph – JY6A (2272) Concrete Foundation

Photograph – Circuit Breaker JY1A (1972) Orientation

Photograph – Circuit Breaker JY1A (1972) Orientation

Photograph – JY1A (1972) Nameplate

Photograph – JY1A (1972) Nameplate

Photograph – JY1A (1972) Concrete Foundation