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2.1.4.7 Hazard Event 7:Short Circuits on the Load Side <br />Short circuits on the load side of the ESS are anticipated to be largely mitigated by BMS <br />control and passive circuit protection and design which include BMS fused disconnects, <br />ground fault detection /interruption,and overvoltage /over discharge protection.The <br />system has been tested and listed to UL/IEC62368 and UL 9540.The batteries <br />themselves are listed to UL 1973. <br />Table 9 –Short Circuit on the Load Side Barriers <br />Cascading Thermal Runaway <br />Limitation <br />Cell and module designs prevent cascading thermal <br />runaway beyond the initiating module as demonstrated <br />in UL 9540A testing. <br />Fire Detection A smoke detector is included in the B160 cabinet.In the <br />event of a fire within the battery or other electronics the <br />detector will send an alarm signal to a remote 24/7 <br />Network Operations Center (NOC),alerting the system <br />owner of a potential fire within the enclosure. <br />Deflagration Protection UL 9540A testing has demonstrated that generation of <br />a combustible mixture of vented gasses is not likely in <br />accordance with NFPA68/69.The B160 enclosure <br />contains a panel of pressure relief valves and fans to <br />release vented gas pressure in the event of venting of a <br />cell or cells. <br />Emergency Response Plan <br />Training <br />In many cases,an Emergency Response Plan will be in <br />place to provide direction to building personnel or <br />responders on how to safely evacuate a site in the event <br />of a thermal runaway event.To be added by customer. <br />Fire Service Response In the event of fire,fire service response is beneficial. <br />As the installation locations of cellular communications <br />equipment are generally in populated areas,timely <br />response and site access by fire services are anticipated. <br />Barrier Barrier Description <br />THREAT BARRIERS <br />Confidentiality Class External Confidentiality Label Document Type Page <br />Ericsson Internal Analysis 24 (27) <br />Prepared By (Subject Responsible)Approved By (Document Responsible)Checked <br />ERATLEN Thomas Lennholm <br />Document Number Revision Date Reference <br />1785-BFM 107 220/1 Uen PA2 2025-06-03