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W917BG-08-D-0001-0004 / Besmaya - Fielding and Secured Storage 26 12 00 - 1MEDIUM VOLTAGE TRANSFORMER

SECTION 26 12 00

MEDIUM-VOLTAGE TRANSFORMERS

PART 1 GENERAL

1.01 SECTION INCLUDES

A. Liquid-filled pad-mounted distribution transformers.

1.02 REFERENCE STANDARDS

A. IEEE C37.47 - American National Standard Specifications for Distribution Fuse DisconnectingSwitches, Fuse Supports, and Current-Limiting Fuses; 2000. (ANSI/IEEE C37.47)

B. IEEE C57.12.28 - IEEE Standard for Pad-Mounted Equipment -- Enclosure Integrity; 2005.

C. IEEE C57.12.00 - IEEE Standard General Requirements for Liquid-Immersed Distribution, Power,and Regulating Transformers; Institute of Electrical and Electronic Engineers; 2006.

D. IEEE C57.12.90 - IEEE Standard Test Code for Liquid-Immersed Distribution, Power, andRegulating Transformers; Institute of Electrical and Electronic Engineers; 2006.

E. IEEE C57.13 - IEEE Standard Requirements for Instrument Transformers; Institute of Electrical andElectronic Engineers; 2008.

F. IEEE 386 - IEEE Standard for Separable Insulated Connector Systems for Power DistributionSystems Above 600 V; Institute of Electrical and Electronic Engineers; 2006.

G. NFPA 70 -National Electrical Code; National Fire Protection Association; 2008.

1.03 SUBMITTALS

A. See Administrative Requirements, for submittal procedures.

B. Shop Drawings: Indicate electrical characteristics and connection requirements, outlinedimensions, connection and support points, weight, specified ratings and materials.

C. Product Data: Provide electrical characteristics and connection requirements, standard modeldesign tests, and options.

D. Test Reports: Indicate procedures and results for specified factory and field testing andinspection.

E. Manufacturer's Installation Instructions.

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F. Manufacturer's Certificate: Certify that products meet or exceed specified requirements.

1.04 QUALITY ASSURANCE

A. Conform to requirements of NFPA 70.

B. Manufacturer Qualifications: Company specializing in manufacturing the products specified in thissection with minimum 3 years experience.

PART 2 PRODUCTS

2.01 LIQUID-FILLED TRANSFORMERS

A. Liquid-Filled Transformers: IEEE C57.12.00, three phase, pad-mounted, self-cooledtransformer unit.

B. Cooling and Temperature Rise; IEEE C57.12.00; Class OA. self-cooled.

2.02 SERVICE CONDITIONS

A. Operating Ambient Temperature: 50 degrees C.

C. Altitude: 100 m.

2.03 RATINGS

A. Per construction drawings.

B. Basic Impulse Level: 95 kV.

PART 3 EXECUTION

3.01 EXAMINATION

A. Verify that support pads are ready to receive products.

B. Verify that field measurements are as indicated on shop drawings.

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W917BG-08-D-0001-0004 / Besmaya - Fielding and Secured Storage 26 12 00 - 3MEDIUM VOLTAGE TRANSFORMER

3.02 INSTALLATION

A. Install in accordance with IEEE C57.94.

B. Install plumb and level.

C. Install safety labels to NEMA 260.

3.03 FIELD QUALITY CONTROL

A. Inspect and test in accordance with NETA STD ATS, except Section 4.

B. Perform inspections and tests listed in NETA STD ATS, Section 7.2.

END OF SECTION