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USACE / NAVFAC / AFCEC / NASA UFGS-26 12 21 (November 2022)
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Preparing Activity: NAVFAC Superseding
UFGS-26 12 21 (
May 2017)
UNIFIED FACILITIES GUIDE SPECIFICATIONS
References are in agreement with UMRL dated October 2022
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SECTION TABLE OF CONTENTS
DIVISION 26 - ELECTRICAL
SECTION 26 12 21
SINGLE-PHASE PAD-MOUNTED TRANSFORMERS
11/22
PART 1 GENERAL
1.1 REFERENCES
1.2 RELATED REQUIREMENTS
1.3 DEFINITIONS
1.4 SUBMITTALS
1.4.1 Government Submittal Review
1.4.2 Reduced Submittal Requirements
1.5 QUALITY ASSURANCE
1.5.1 Pad-Mounted Transformer Drawings
1.5.2 Regulatory Requirements
1.5.3 Standard Products
1.5.3.1 Alternative Qualifications
1.5.3.2 Material and Equipment Manufacturing Date
1.6 MAINTENANCE
1.6.1 Additions to Operation and Maintenance Data
PART 2 PRODUCTS
2.1 PRODUCT COORDINATION
2.2 SINGLE-PHASE PAD-MOUNTED TRANSFORMERS (DEAD-FRONT)
2.2.1 Compartment Construction
2.2.1.1 High Voltage
2.2.1.2 Low Voltage
2.2.2 Transformer
2.2.2.1 Specified Transformer Efficiencies
2.3 INSULATING LIQUID
2.4 LIQUID-FILLED TRANSFORMER NAMEPLATES
2.5 CORROSION PROTECTION
2.6 WARNING SIGNS AND LABELS
2.7 GROUNDING AND BONDING
2.8 PADLOCKS
2.9 CAST-IN-PLACE CONCRETE
2.10 SOURCE QUALITY CONTROL
SECTION 26 12 21 Page 1
