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USACE / NAVFAC / AFCEC / NASA UFGS-26 36 23 (May 2020)
Change 1 - 08/21
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Preparing Activity: USACE Superseding
UFGS-26 36 00.0
0 10 (October 2007)
UFGS-26 36 23.00 20 (April 2006)
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 36 23
AUTOMATIC TRANSFER SWITCHES AND BY-PASS/ISOLATION SWITCH
05/20, CHG 1: 08/21
PART 1 GENERAL
1.1 REFERENCES
1.2 RELATED REQUIREMENTS
1.3 SUBMITTALS
1.4 OPERATION AND MAINTENANCE MANUAL
1.4.1 Additions to Operation and Maintenance Manuals
1.4.2 Spare Parts
1.5 QUALITY ASSURANCE
1.5.1 Proof of Listing
1.5.2 Automatic Transfer Switch Drawings
1.5.3 Regulatory Requirements
1.5.4 Standard Product
1.5.4.1 Alternative Qualifications
1.5.4.2 Material and Equipment Manufacturing Date
1.6 DELIVERY AND STORAGE
1.7 ENVIRONMENTAL CONDITIONS
1.8 SEISMIC REQUIREMENTS
PART 2 PRODUCTS
2.1 AUTOMATIC TRANSFER SWITCHES
2.1.1 Undervoltage Sensing - Normal/Preferred Source
2.1.2 Adjustable Time Delay - Override Transfer
2.1.3 Voltage/Frequency Lockout Relay - Alternate/Emergency Source
2.1.4 Adjustable Time Delay - Transfer to Alternate/Emergency Power
Source
2.1.5 Adjustable Time Delay- Re-transfer to Normal/Preferred Source
2.1.6 Engine-Generator Exerciser
2.1.7 Engine Shutdown Time Delay
2.1.8 Engine Starting Contacts
2.1.9 Controls for Fire Pump Service Automatic Transfer Switch
2.1.10 Delayed Transition With Time Delay Neutral
SECTION 26 36 23 Page 1
