1、*USACE / NAVFAC / AFCEC / NASA UFGS-26 12 21 (November 2013)-Preparing Activity: NAVFAC SupersedingUFGS-26 12 19.20 (April 2006)UNIFIED FACILITIES GUIDE SPECIFICATIONSReferences are in agreement with UMRL dated October 2013*SECTION TABLE OF CONTENTSDIVISION 26 - ELECTRICALSECTION 26 12 21SINGLE-PHAS
2、E PAD-MOUNTED TRANSFORMERS11/13PART 1 GENERAL1.1 REFERENCES1.2 RELATED REQUIREMENTS1.3 DEFINITIONS1.4 SUBMITTALS1.4.1 Government Submittal Review1.4.2 Reduced Submittal Requirements1.5 QUALITY ASSURANCE1.5.1 Pad-Mounted Transformer Drawings1.5.2 Regulatory Requirements1.5.3 Standard Products1.5.3.1
3、Alternative Qualifications1.5.3.2 Material and Equipment Manufacturing Date1.6 MAINTENANCE1.6.1 Additions to Operation and Maintenance DataPART 2 PRODUCTS2.1 PRODUCT COORDINATION2.2 SINGLE-PHASE PAD-MOUNTED TRANSFORMERS (DEAD-FRONT)2.2.1 Compartment Construction2.2.1.1 High Voltage2.2.1.2 Low Voltag
4、e2.2.2 Transformer2.2.2.1 Specified Transformer Efficiencies2.3 INSULATING LIQUID2.4 LIQUID-FILLED TRANSFORMER NAMEPLATES2.5 CORROSION PROTECTION2.6 WARNING SIGNS2.7 GROUNDING AND BONDING2.8 PADLOCKS2.9 CAST-IN-PLACE CONCRETE2.10 SOURCE QUALITY CONTROL2.10.1 Transformer Test Schedule2.10.2 Test Inst
5、rument CalibrationSECTION 26 12 21 Page 1Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-2.10.3 Design Tests2.10.4 Routine and Other TestsPART 3 EXECUTION3.1 INSTALLATION3.2 GROUNDING3.2.1 Grounding Electrodes3.2.2 Pad-Mounted Transformer Grounding3.
6、2.3 Connections3.2.4 Grounding and Bonding Equipment3.3 INSTALLATION OF EQUIPMENT AND ASSEMBLIES3.3.1 Meters and Current Transformers3.4 FIELD APPLIED PAINTING3.5 WARNING SIGN MOUNTING3.6 FOUNDATION FOR EQUIPMENT AND ASSEMBLIES3.6.1 Cast-In-Place Concrete3.6.2 Sealing3.7 FIELD QUALITY CONTROL3.7.1 P
7、erformance of Acceptance Checks and Tests3.7.1.1 Pad-Mounted Transformers3.7.1.2 Current Transformers3.7.1.3 Watthour Meter3.7.1.4 Grounding System3.7.1.5 Surge Arresters, Medium- and High-Voltage3.7.2 Follow-Up Verification- End of Section Table of Contents -SECTION 26 12 21 Page 2Provided by IHSNo
8、t for ResaleNo reproduction or networking permitted without license from IHS-,-,-*USACE / NAVFAC / AFCEC / NASA UFGS-26 12 21 (November 2013)-Preparing Activity: NAVFAC SupersedingUFGS-26 12 19.20 (April 2006)UNIFIED FACILITIES GUIDE SPECIFICATIONSReferences are in agreement with UMRL dated October
9、2013*SECTION 26 12 21SINGLE-PHASE PAD-MOUNTED TRANSFORMERS11/13*NOTE: This guide specification covers the requirements for single-phase clam shell type and two-compartment type pad-mounted transformers of the dead-front type for exterior applications.Adhere to UFC 1-300-02 Unified Facilities Guide S
10、pecifications (UFGS) Format Standard when editing this guide specification or preparing new project specification sections. Edit this guide specification for project specific requirements by adding, deleting, or revising text. For bracketed items, choose applicable items(s) or insert appropriate inf
11、ormation.Remove information and requirements not required in respective project, whether or not brackets are present.Comments, suggestions and recommended changes for this guide specification are welcome and should be submitted as a Criteria Change Request (CCR).*NOTE: For Navy and Air Force project
12、s, this specification incorporates a “reduced shop drawing submittal process“ for listed manufacturers who previously satisfied reduced shop drawing submittal process requirements. This specification also includes unique routine and other test requirements, transformer loss certificate, transformer
13、test schedule, and field quality control acceptance tests and reports. The preparing activity, NAVFAC LANT, has significant experience and technical expertise in these areas. If Reach-back support during construction is desired, for a specific NAVFAC or Air Force project, the technical representativ
14、e (electrical engineer) editing this document for that project must contact the NAVFAC LANT Capital Improvements Electrical Engineering (Code CI47) Office for consultation during the design stage of SECTION 26 12 21 Page 3Provided by IHSNot for ResaleNo reproduction or networking permitted without l
15、icense from IHS-,-,-the project, prior to including the requirement in the specification.*NOTE: Use the following related guide specifications for power distribution equipment:-Section 26 08 00 APPARATUS INSPECTION AND TESTING-Section 26 11 13.00 20 PRIMARY UNIT SUBSTATIONS-Section 26 11 16 SECONDAR
16、Y UNIT SUBSTATIONS-Section 26 12 19.10 THREE-PHASE PAD-MOUNTED TRANSFORMERS-Section 26 13 00.00 20 SF6/HIGH-FIREPOINT FLUID INSULATED PAD-MOUNTED SWITCHGEARSection 26 20 00 INTERIOR DISTRIBUTION SYSTEM-Section 26 23 00 SWITCHBOARDS AND SWITCHGEAR-Section 26 27 13.10 30 ELECTRIC METERS-Section 26 27
17、14.00 20 ELECTRICITY METERING-Section 33 71 01 OVERHEAD TRANSMISSION AND DISTRIBUTIONDo not use the following related guide specifications except for Army Civil Works projects. They have not been unified:-Section 26 11 14.00 10 MAIN ELECTRIC SUPPLY STATION AND SUBSTATION-Section 26 22 00.00 10 480-V
18、OLT STATION SERVICE SWITCHGEAR AND TRANSFORMERS-Section 26 28 00.00 10 MOTOR CONTROL CENTERS, SWITCHBOARDS AND PANELBOARDS*NOTE: Coordination is required between this section and metering equipment specification sections. See Section 26 27 14.00 20 ELECTRICITY METERING or Section 26 27 13.10 30 ELEC
19、TRIC METERS for transformer and metering details, which are available in metric (SI) and U.S. Customary (IP) system dimension. Use these files to develop project specific drawings, including: File Name DescriptionPADMDE7 Single Phase, One Circuit with Surge ArrestersPADMDE8 Single Phase, Feed-Thru C
20、ircuit with Surge ArrestersARCFLASH Arc Flash Warning LabelTO DOWNLOAD DRAWINGSGo to http:/www.wbdg.org/ccb/NAVGRAPH/graphtoc.pdf.Select the appropriate Electrical .ZIP file(s) and extract the desired details.SECTION 26 12 21 Page 4Provided by IHSNot for ResaleNo reproduction or networking permitted
21、 without license from IHS-,-,-Do not include list of details, or details themselves, in project specifications. Insert the appropriate details on drawings and modify optional and blank items. If special features are required, do not modify details, but indicate these changes as notes below the detai
22、l.*NOTE: Show the following information on the project drawings:1. Single-line diagram showing pad-mounted transformer connectors, inserts, surge arresters, switches, fuses, current transformers with ratings, and meters as applicable.2. Grounding plan.3. Type and number of cables, and size of conduc
23、tors for each power circuit.4. Transformer primary and secondary voltages. (Use IEEE C57.12.00, Table 11(a), “Designation of voltage ratings of single-phase windings“). State the primary voltage (nominal) actually in service and not the voltage class.5. Special conditions, such as altitude, temperat
24、ure, and humidity; exposure to fumes, vapors, dust, and gases; and seismic requirements.*PART 1 GENERAL1.1 REFERENCESThe publications listed below form a part of this specification to the extent referenced. The publications are referred to within the text by the basic designation only.AMERICAN CONCR
25、ETE INSTITUTE INTERNATIONAL (ACI)ACI 318 (2011; Errata 1 2011; Errata 2 2012; Errata 3-4 2013) Building Code Requirements for Structural Concrete and CommentaryACI 318M (2011; Errata 2013) Building Code Requirements for Structural Concrete R 2007) Standard Test Method for Dielectric Breakdown Voltag
26、e of Insulating Liquids Using Disk ElectrodesASTM D92 (2012b) Standard Test Method for Flash and Fire Points by Cleveland Open Cup TesterASTM D97 (2012) Pour Point of Petroleum ProductsFM GLOBAL (FM)FM APP GUIDE (updated on-line) Approval Guide http:/ OF ELECTRICAL AND ELECTRONICS ENGINEERS (IEEE)IE
27、EE 386 (2006; INT 1 2011) Standard for Separable Insulated Connector Systems for Power Distribution Systems Above 600VIEEE C2 (2012; Errata 2012; INT 1-4 2012; INT 5 2013) National Electrical Safety CodeIEEE C37.47 (2011) Standard for High Voltage Current-Limiting Type Distribution Class Fuses and F
28、use Disconnecting SwitchesIEEE C57.12.00 (2010) Standard General Requirements for Liquid-Immersed Distribution, Power, and Regulating TransformersIEEE C57.12.25 (1990) Standard for Transformers - Pad-Mounted, Compartmental-Type, Self-Cooled, Single-Phase Distribution Transformers With Separable Insu
29、lated High-Voltage Connectors; High Voltage, 34,500 Grdy/ 19,920 Volts and Below; Low Voltage, 240/120 Volts; 167 kVa and Smaller RequirementsIEEE C57.12.28 (2005; INT 3 2011) Standard for Pad-Mounted Equipment - Enclosure IntegrityIEEE C57.12.29 (2005) Standard for Pad-Mounted Equipment - Enclosure
30、 Integrity for Coastal SECTION 26 12 21 Page 6Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-EnvironmentsIEEE C57.12.80 (2010) Standard Terminology for Power and Distribution TransformersIEEE C57.12.90 (2010) Standard Test Code for Liquid-Immersed D
31、istribution, Power, and Regulating TransformersIEEE C57.13 (2008; INT 2009) Standard Requirements for Instrument TransformersIEEE C57.98 (2011) Guide for Transformer Impulse TestsIEEE C62.11 (2012) Standard for Metal-Oxide Surge Arresters for Alternating Current Power Circuits (1kV)IEEE Stds Diction
32、ary (2009) IEEE Standards Dictionary: Glossary of Terms “DO“ for District Office (Engineering Division or other organization in the District Office); “AO“ for Area Office; “RO“ for Resident Office; and “PO“ for Project Office. Codes following the “G“ typically are not used for Navy, Air Force, and N
33、ASA projects.Choose the first bracketed item for Navy, Air Force, and NASA projects, or choose the second bracketed item for Army projects.*Government approval is required for submittals with a “G“ designation; SECTION 26 12 21 Page 8Provided by IHSNot for ResaleNo reproduction or networking permitt
34、ed without license from IHS-,-,-submittals not having a “G“ designation are for Contractor Quality Control approval.for information only. When used, a designation following the “G“ designation identifies the office that will review the submittal for the Government. Submit in accordance with Section
35、01 33 00 SUBMITTAL PROCEDURES:SD-02 Shop DrawingsPad-mounted transformer drawings; G; G, _SD-03 Product DataSingle-phase pad-mounted transformers (dead-front); G; G, _Include manufacturers information for each component, device, insulating fluid, and accessory provided with the transformer.SD-06 Tes
36、t ReportsAcceptance checks and tests; G; G, _Submit reports, including acceptance criteria and limits for each test in accordance with NETA ATS “Test Values“.SD-07 CertificatesTransformer efficiencies; G; G, _Submit certification, including supporting calculations, from the manufacturer indicating c
37、onformance with the paragraph entitled “Specified Transformer Efficiencies.“SD-09 Manufacturers Field ReportsPad-mounted transformer design tests; G; G, _Pad-mounted transformer routine and other tests; G; G, _SD-10 Operation and Maintenance DataTransformer(s), Data Package 5; G; G, _Submit operatio
38、n and maintenance data in accordance with Section 01 78 23 OPERATION AND MAINTENANCE DATA and as specified herein.SD-11 Closeout SubmittalsTransformer test schedule; G; G, _Submit report of test results as specified by paragraph entitled “Source Quality Control.“1.4.1 Government Submittal Review*NOT
39、E: Include the bracketed option below on Navy and Air Force projects where “reach-back support“ has already been coordinated with NAVFAC LANT per SECTION 26 12 21 Page 9Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-the 2nd introductory Technical No
40、te. Add appropriate information in Section 01 33 00 SUBMITTAL PROCEDURES to coordinate with the special requirements.* Code CI47, NAVFAC LANT, Naval Facilities Engineering Command_ will review and approve all submittals in this section requiring Government approval. 1.4.2 Reduced Submittal Requireme
41、nts*NOTE: Include this bracketed reduced submittal requirements paragraph on Navy and Air Force Projects.*Transformers designed and manufactured by ABB in Jefferson City, MO; by Cooper Power Systems in Waukesha, WI; by ERMCO in Dyersburg, TN; or by Howard Industries in Laurel, MS need not submit the
42、 entire submittal package requirements of this contract. Instead, submit the following items:a. A certification, signed by the manufacturer, stating that the manufacturer will meet the technical requirements of this specification.b. An outline drawing of the transformer with devices identified (para
43、graph entitled “Pad-Mounted Transformer Drawings“, item a).c. ANSI nameplate data of the transformer (paragraph entitled “Pad-Mounted Transformer Drawings“, item b).*NOTE: The designer is responsible for providing proper settings for secondary over-current device(s) to ensure proper protection of equipment and coordination with transformer high side fuses. Include the following option for transformers serving secondary over-current devi
