Replacement_Pages_MOD_6.pdf

Solicitation No. R15PS00361 Anderson Ranch Powerplant Station Service Replacement

Amendment No. 006

(Revised)

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C. High-voltage equipment (HV): Equipment rated at 1000V and above.

1.04 PERFORMANCE REQUIREMENTS

A. Completely assembled and installed switchgear assembly shall operate as specified without derating under following conditions, unless otherwise specified:

1. Elevation: 4000 ft. Use of altitude correction factors required per IEEE C37.20.3, C37.04, C57.12.01, and C57.13.

2. Temperature Range: 0 degrees C to 40 degrees C.

1.05 QUALIFICATIONS

A. Manufacturer of substation assembly shall be the manufacturer of high-voltage circuit breakers, transformers, and low-voltage circuit breakers.

B. Manufacturer of equipment shall have produced similar electrical equipment for a minimum of 5 years.

C. Seismic Qualifications: Qualified to meet or exceed IEEE C37.81, Section 4 – Performance Requirements.

1.06 SUBMITTALS

A. Submit the following in accordance with Section 01 33 00 - Submittals and Section 01 33 26 - Electrical Drawings and Data.

B. RSN 26 11 16-1, Approval Drawings and Data in Manufacturer’s Format:

1. Manufacturer’s qualification information for equipment.

2. Layout drawings:

a. Front view elevation with bussing and close-coupled assemblies shown.

b. Plan view with conduit/trench entry and exit locations.

c. Weight for each section of the substation and total weight of substation assembly. Include removable elements in the weight of each section.

Include additional impact load during opening operation of breaker.

Project specific weights required.

d. Mounting requirements to meet seismic qualifications.

e. Provide complete layout drawing of channel base.

3. Manufacturer’s technical catalog data sheets marked with corresponding BOM item number. Include:

a. Weight of removable circuit breakers.

b. Circuit breakers tripping and closing currents.

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c. Description of bus bar insulation system.

d. Cable terminal sizes.

4. Connection details between close-coupled assemblies.

5. Equipment nameplate drawings for complete assembly and the following individual equipment:

a. 15kV circuit breakers.

b. 480V circuit breakers (each type).

c. Dry-type transformer.

6. Device nameplate list.

7. Bill of materials (BOM) drawing broken out per section of the substation.

8. Single line diagram.

9. Seismic qualification documentation in accordance with IEEE C37.81, Section 9, Documentation.

10. Time current curves for transformers and breakers.

11. Job Hazard Analysis for factory inspection by Government personnel.

C. RSN 26 11 16-2, Approval Drawings in Government Format

1. Schematic Diagrams.

2. Sample Wiring Diagrams.

D. RSN 26 11 16-3, Approval Drawings in Government Format

1. Wiring Diagrams.

E. RSN 26 11 16-4, Factory Test Date Notification.

F. RSN 26 11 16-5, Factory Test Reports.

G. RSN 26 11 16-6, Field Test Reports.

H. RSN 26 11 16-7, Final Drawings:

1. Layout Drawings.

2. Schematic Diagrams (Government Format).

3. Wiring and interconnection diagrams (Government Format).

I. RSN 26 11 16-8, Operation and Maintenance Instruction Book:

1. Include:

a. Final Drawings approved in RSN 26 11 16-7.

b. Data submitted for approval in final as-built condition.

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c. Factory and field test reports.

1.07 DESIGN REQUIREMENTS

A. Design electrical and physical layout of the unit substation to be installed at the location of the existing unit substation.

1. Existing substation physical size is 29 feet 10-1/4-inches wide by 58-inches deep by 96-1/2-inches tall. Embedded conduit stub-ups for existing feed to KSB from Generator #2 must be reused for new feed to JSB. Existing cutout in floor can be reused for power conductors when feasible.

2. New substation: Maximum size of substation is dependent on Government requirements, NFPA70 clearance requirements, and access/maintenance of equipment. Access doors and removable panels on substation to be designed to open fully regardless of clearance distance.

a. Required clearances for this substation:

1) Front: Larger of 60-inches or manufacturer’s recommended clearance for breaker removal, installation, and maintenance.

2) Rear: 60 inches minimum.

3) Side (KSA): 24 inches minimum.

4) Side (KSB): 60 inches minimum.

b. Estimated maximum allowable floor space for the substation is:

1) 34-feet 2-inches-long by 8-feet 6-inches-deep.

2) 35-feet 4-inches-long by 7-feet-deep.

B. Design new equipment to facilitate use of existing conduits, core drills and floor cut outs, when possible.

1. New equipment installation may require core drills.

C. Provide labels for equipment, devices, indicators and switches to match existing plant standards.

D. Design a complete RC Snubber system to minimize switching transients.

1.08 DELIVERY, STORAGE, AND HANDLING

A. In accordance with IEEE C37.20.1, C37.20.3, and C57.12.01.

1.09 EXTRA MATERIALS

A. Furnish special tools and accessories as required in Section 26 05 02 - Basic Electrical Materials and Methods.

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PART 2 PRODUCTS

2.01 SUBSTATION ASSEMBLY

A. Refer to Article 2.02 Metal-Enclosed Interrupter Switchgear for additional requirements for high-voltage sections.

B. Refer to Article 2.08 Metal-Enclosed Low-Voltage Power Circuit Breaker Switchgear for additional requirements for low-voltage sections.

C. Type: Indoor, dead front, with energized parts behind grounded metal barriers.

D. Ratings:

1. Incoming primary equipment sections and transformer sections:

a. Maximum voltage: 15-kV, rms.

b. Nominal voltage: 6.9kV, rms.

c. Frequency: 60 Hz.

2. Low-voltage sections:

a. Maximum voltage: Low-voltage sections: 508V, rms.

b. Nominal voltage: 480V, rms.

c. Frequency: 60 Hz.

E. Bussing:

1. Phase bus: 3 phase, silver-plated copper.

2. Ground bus: Silver-plated copper.

3. Neutral bus: None.

F. Connections to transformer section:

1. Primary: Silver-plated copper bus.

2. Secondary: Silver-plated copper bus.

3. Meets or exceeds ratings of the substation assembly.

G. Construction Features:

1. Top mounted circuit breaker lifting device on rail system. Rail system shall be integral to the substation assembly. Rated to adequately lift and lower low voltage circuit breakers in substation from breaker cubicle to ground level.

Operator handle for lifting device shall be located within 72 inches of finished floor.

2. Shield energized low-voltage terminals exposed by door opening with removable cover.

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2.04 SUBSTATION TRANSFORMER - DRY-TYPE

A. Conform to IEEE C57.12.01.

B. Type: VPI, VPE, or Cast coil, dry-type.

C. Ratings:

1. Cooling Class: AA (Cooled by natural air convection).

2. Frequency: 60 Hz.

3. Capacity: 500kVA.

4. Voltage rating (HV): 6.9kV.

5. High-side fault current: 21.8kA symmetrical, X/R 12.5. 1.1 pu pre-fault voltage at 1/2 cycle.

6. Line-end BIL (HV): 95kV for winding and bushing.

7. Line-end BIL (LV): 30kV for winding and bushing.

8. Neutral-end BIL (LV): 30kV for winding and bushing.

9. De-energized taps (HV): Plus and minus 2.5 percent and 5 percent full capacity.

10. Voltage rating (LV): 480V.

11. Impedance: 5.75 percent plus or minus 7.5 percent on a 500kVA Base.

12. Temperature rise (maximum): 150 degrees Celsius rise. Based on 30 degrees Celsius average ambient with a maximum of 40 degrees Celsius.

D. Connections: Delta to Grounded Wye.

E. High-voltage and low-voltage winding material: Copper.

F. UL labeled.

G. Construction of transformer section:

1. Explosion-resistant, fire-resistant, air-insulated, ventilated dry-type construction, and cooled by the natural circulation of air through the windings.

2. Knockdown case design, for ease in fitting through limited openings.

3. Heavy gauge sheet steel construction, equipped with removable panels for access to the core and coils.

4. Incorporate lowered ventilating grills in front and rear panels.

H. Temperature Monitoring: Twelve, 3 wire, 100 Ohm platinum RTDs. Mount 2 RTDs per each low voltage and high voltage winding phase. 1 per winding is spare.

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3. Test routine shall perform meter test for microprocessor based relays.

4. Furnish automatically generated report indicating pass or fail of elements within relay, and also include relay settings, test date, and test set operator.

2.08 METAL-ENCLOSED LOW-VOLTAGE POWER CIRCUIT BREAKER

SWITCHGEAR

A. Conform to IEEE C37.20.1.

B. Ratings:

1. Maximum voltage: 508V, rms (System voltage: 480V).

2. Frequency: 60 Hz.

3. Insulation level: 2.2kV rms.

4. Continuous current (main bus and vertical bus): 1600A (minimum).

5. Short-time withstand current: Not less than that short-time current rating of the low-voltage ac power circuit breaker.

6. Short-circuit withstand current: Not less than that short-circuit current rating of the low-voltage ac power circuit breaker.

C. Bus insulation: Provide for full length of bus. Provide removable boots at section-to-section bus joints for inspection and maintenance.

D. Provide rear compartment barrier between cable compartment and main bus to protect against contact with main or vertical bus bars.

E. Provide metal barrier full height and depth between adjacent vertical structures in cable compartment.

F. Grounded metal shutter system: Automatically cover line and load stab connections when circuit breaker unit is moved to disconnected position. Shutter shall be pad-lockable in the closed position.

G. Accommodate circuit breaker lifting device rail system.

H. Construction Features:

1. Breaker compartments:

a. Steel barriers between each individual circuit breaker compartment.

b. Drawout rails.

c. Doors with hinges equipped with removable hinge pins.

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b. Trip units powered through module. Trip unit display to illuminate via power from station service battery when switchgear bus is not powered.

c. Contacts:

1) Rating: 125VDC.

2) Trip or Alarm: Manually reset from reset button on breaker.

3) Ground Alarm: Automatically reset if ground current is less than Ground Alarm Pickup setting.

4) Block Close Relay: Blocks close after protective trip.

9. Provide non-volatile memory in trip unit to store data during power outage.

10. Testing method: External test set for secondary injection.

2.10 CURRENT TRANSFORMER RATINGS FOR METAL-ENCLOSED

INTERRUPTER SWITCHGEAR

A. Conform to IEEE C57.13.

B. Bar type.

C. Insulation level: 15kV.

D. Short-time mechanical and thermal current ratings: 40,000A.

E. Single-ratio. Ratios as indicated on drawings.

F. Accuracy class for relaying CTs: C10, C20, or C50.

G. Burden for relaying CTs: Based on the actual differential relay and conductors used for this project. Sized per manufacturer of the substation.

2.11 CURRENT TRANSFORMER RATINGS FOR LOW-VOLTAGE AC

SWITCHGEAR

A. Conform to IEEE C57.13.

B. Bushing or window type.

C. Short-time mechanical and thermal current ratings: 42,000A

D. Insulation level: 600V.

E. Single-ratio. Ratios as indicated on drawings.

F. Accuracy class:

1. Relaying CTs: C50.

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2. Metering CTs: 0.3B-1.8.

G. Burden:

1. Relaying CTs: Based on actual differential relay and conductors used for this project. Sized per manufacturer of substation.

2. Metering CTs: Based on actual meters and conductors used for this project.

Sized per manufacturer of substation.

2.12 POTENTIAL TRANSFORMER RATINGS FOR LOW-VOLTAGE AC

SWITCHGEAR

A. In accordance with IEEE C57.13.

B. Ratings and connection:

1. Ratio: 2 pole open delta.

2. Voltage: 480VAC to 120VAC.

3. Accuracy Class: 0.3 (W, X, Y, Z, ZZ), minimum.

4. Thermal Rating:

a. PTs for undervoltage relays: 1000 VA (standard).

b. PTs for meters: 1000 VA (standard).

C. Drawout or non-drawout type.

D. Fuse protection:

1. In accordance with IEEE C37.46.

2. Current-limiting type.

3. Sized by PT manufacturer.

4. Interrupting rating: 42,000 A (rms, symmetrical).

E. Circuit breaker protection: Provide a molded case circuit breaker for secondary circuit protection and disconnecting means when shown on the drawings.

1. Voltage: 120VAC.

2. Continuous current rating: As specified on the drawings.

3. Interrupting current rating: 10,000A.

2.13 RC SNUBBER AND SURGE ARRESTERS

A. Provide surge arresters, resistors, and surge capacitors for a complete RC Snubber system.