UL 9540A-2025 储能系统热失控火蔓延评估试验方法

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ANSI/CAN/UL

9540A:2025

JOINT CANADA-UNITED STATES

NATIONAL STANDARD

STANDARD FOR SAFETY

Test Method for Evaluating Thermal

Runaway Fire Propagation in Battery

Energy Storage Systems

SCC

CCN

ANSI/UL 9540A-2025

SCC FOREWORD

National Standard of Canada

A National Standard of Canada is a standard developed by a Standards Council of Canada (SCC)accredited

Standards Development Organization,in compliance with requirements and guidance set out by SCC.More

information on National Standards of Canada can be found at www.SCc.ca.

SCC is a Crown corporation within the portfolio of Innovation,Science and Economic Development(ISED)Canada.

With the goal of enhancing Canada's economic competitiveness and social well-being,SCC leads and facilitates the

development and use of national and international standards.SCC also coordinates Canadian participation in

standards development,and identifies strategies to advance Canadian standardization efforts.

Accreditation services are provided by SCC to various customers,including product certifiers,testing laboratories,

and standards development organizations.A list of SCC programs and accredited bodies is publicly available at

WWw.SCC.ca.

MARCH 12,2025-ANSI/CAN/UL9540A tr1

UL Standard for Safety for Test Method for Evaluating Thermal Runaway Fire Propagation in Battery

Energy Storage Systems,ANSI/CAN/UL9540A

Fifth Edition,Dated March 12,2025

Summary of Topics

This Fifth Edition of ANSI/CAN/UL9450A,Standard for Test Method for Evaluating Thermal

Runaway Fire Propagation in Battery Energy Storage Systems dated March 12,2025,includes the

following changes in requirements:

-Revised FTIR measurements to be optional and added hydrogen measurements at Unit

Level Test:8.2.14,8.2.15,9.2.23,9.2.24, and 10.3.13.

-Clarified sample rest times after conditioning and charging:7.2.2,8.1.2, and 9.1.9.

-Corrected standard reference in 9.1.12:3.2.

-Replaced reference to UL 1685 with UL 2556:3.2 and 10.2.2.

-Revised Residential Unit Level Testing to remove the usage of the NFPA 286 test room and

replaced with test wall:9.1.2,Figure 9.3,9.2.6,9.4.2,9.4.3,9.5.1,9.5.2, and 10.3.3.

-Added option for continuous thermal ramp until thermal runaway:7.3.1.5.

-Added NFPA 855 for applicable codes: 1.2 and 3.2

-Clarified charging method for cells: 7.2.1 and 7.2.4

-Revised location of thermocouples during cell testing and thermal ramp option:7.3.1.2,

7.3.1.7-7.3.1.10.

-Clarified report if using a battery system as the BESS unit for testing: 7.7.1.

-Clarified establishing cell to cell propagation in the test method in 8.2:8.2.3- 8.2.7.

-Revised Module Level Performance Criteria:8.5.1.

-Revised requirements to allow the use of Gardon heat flux gauge,revised sampling rate

for heat flux and wall temperature,and added floor mounted residential system exceptions:

6.3,6.4,9.2.15,9.2.17 -9.2.20,10.3.5,10.3.6,10.3.8 -10.3.10.

-Revised egress path heat flux measurements for non-residential outdoor wall mount

systems: 9.5.1 and 9.5.5.

-Removed noncombustible construction exception and clarified outdoor flame exception:

4.16,9.1.1,9.1.6,9.2.19,9.3.2,9.6.1 - 9.6.5,9.7.1, and Table 9.1.

-Added test method for lead acid and nickel cadmium batteries:3.2, 7.3.1.4, 7.3.3.1 - 7.3.3.8,

7.6.1,7.6.2,Table 7.1,7.7.3,and 7.10.1- 7.10.4.

-Revised flow battery requirements: 5.4.3,7.1.1,7.1.2, Section 7.3.2,7.7.2,7.9.1,9.9.1-

9.9.4,9.10.1, and 9.11.1.

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ANSI/CAN/UL9540A:2025JOINTCANADA-UNITEDSTATESNATIONALSTANDARDSTANDARDFORSAFETYTestMethodforEvaluatingThermalRunawayFirePropagationinBatteryEnergyStorageSystemsSCCCCNANSI/UL9540A-2025SCCFOREWORDNationalStandardofCanadaANationalStandardofCanadaisastandarddevelopedbyaStandardsCouncilofCanada(SCC)accred...

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