UL 1973-2018
UL Standard for Safety Batteries for Use in Stationary@ Vehicle Auxiliary Power and Light Electric Rail (LER) Applications (Second Edition)

Standard No.

UL 1973-2018

Release Date

2018

Published By

Underwriters Laboratories (UL)

Status

Be replaced 2019-03

Replace By

UL 1973 CRD-2019

Latest

UL 1973-2022

Scope

These requirements cover battery systems as defined by this standard for use as energy storage for stationary applications such as for PV@ wind turbine storage or for UPS@ etc. applications. These systems shall be installed in accordance with NFPA 70@ C22.1@ or other applicable installation codes. These requirements also cover battery systems as defined by this standard for use in light electric rail (LER) applications and stationary rail applications such as rail substations. These systems are intended for installation within either the rail car or within a sheltered stationary location such as a rail substation. These battery systems may utilize regenerative braking from the trains as a source of energy for recharging and are intended for direct or indirect connection to the rail power lines. These battery systems are intended for balancing loads during peak hours@ serving as an energy storage device during regenerative breaking of the trains@ and as a source of emergency power to move trains to the nearest station during power outages. Appendix B of this standard includes requirements specific to sodium-beta type technologies. Appendix C of this standard includes requirements specific to flowing electrolyte technologies. This standard evaluates the battery system??s ability to safely withstand simulated abuse conditions. This standard evaluates the system based upon the manufacturer??s specified charge and discharge parameters. This standard does not evaluate the performance (i.e. capacity measurements under various discharge conditions) or reliability (i.e. capacity measurements under various environmental conditions) of these devices. Figure 1.1 is a boundary diagram example for a battery system for this application. Figure 1.2 is a boundary diagram example for a module for this application.

UL 1973-2018 history

• 1970 UL 1973-2022 Batteries for Use in Light Electric Rail (LER) Applications and Stationary Applications
• 2019 UL 1973 CRD-2019 UL Standard for Safety Batteries for Use in Stationary@ Vehicle Auxiliary Power and Light Electric Rail (LER) Applications - Section / Paragraph Reference: 7.4.1.1@ Subject: Determining if non-UL Certified Wiring is Acceptable for the Purpose (Edition 2:
• 2018 UL 1973-2018 UL Standard for Safety Batteries for Use in Stationary@ Vehicle Auxiliary Power and Light Electric Rail (LER) Applications (Second Edition)
• 2017 UL 1973 BULLETIN-2017 UL Standard for Safety Outline Of Investigation For Batteries For Use In Light Electric Rail (LER) Applications And Stationary Applications (COMMENTS DUE: AUGUST 29@ 2017)
• 2016 UL 1973 BULLETIN-2016 UL Standard for Safety Outline Of Investigation For Batteries For Use In Light Electric Rail (LER) Applications And Stationary Applications (COMMENTS DUE: NOVEMBER 11@ 2016)
• 2015 UL 1973 CRD-2015 UL Standard for Safety Batteries for Use in Light Electric Rail (LER) Applications and Stationary Applications - Section / Paragraph Reference: 5.11.2, new APPENDIX E Subject: Updated Requirements for Secondary Lithium Cells (Edition 1: February 15, 2013)
• 2015 UL 1973 BULLETIN-2015 UL Standard for Safety Outline Of Investigation For Batteries For Use In Light Electric Rail (LER) Applications And Stationary Applications (COMMENTS DUE: OCTOBER 26@ 2015)
• 2014 UL 1973 BULLETIN-2014 UL Standard for Safety Outline Of Investigation For Batteries For Use In Light Electric Rail (LER) Applications And Stationary Applications
• 2013 UL 1973-2013 Batteries for Use in Light Electric Rail (LER) Applications and Stationary Applications
• 2012 UL 1973 BULLETIN-2012 UL Standard for Safety Outline Of Investigation For Batteries For Use In Light Electric Rail (LER) Applications And Stationary Applications (COMMENTS DUE: JANUARY 14@ 2013)
• 2011 UL 1973 BULLETIN-2011 UL Standard for Safety Outline of Investigation for Batteries for Use in Light Electric Rail (LER) Applications and Stationary Applications (COMMENTS DUE: JANUARY 23@ 2012)
• 2010 UL 1973 BULLETIN-2010 Summary of Topics This bulletin announces the availability of the Outline of Investigation for Batteries for Use in Light Electric Rail (LER) Applications and Stationary Applications, Subject 1973