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REV: 04-29-25 LF <br />ELECTRICAL SYSTEM PERFORMANCE TEST, LOW-VOLTAGE <br />The apparatus upon completion will be tested and certified by an independent third-party testing <br />company. The certification tests will follow the guidelines outlined in the current NFPA Standard <br />for Automotive Fire Apparatus in force at time of contract. <br />There shall be multiple tests performed when the apparatus has been completed. The <br />manufacturer shall provide the completed Test Certificate(s) to the City at time of delivery. <br />The apparatus low-voltage electrical system will be tested and certified. Tests shall be performed <br />when the air temperature is between 0 degrees Fahrenheit and 110 degrees Fahrenheit (–18 <br />degrees Celsius and 43 degrees Celsius). The three tests defined in NFPA shall be performed in <br />the order in which they appear. Before each test, the batteries shall be fully charged until the <br />voltage stabilizes at the voltage regulator set point and the lowest charge current is maintained <br />for 10 minutes. Failure of any of these tests shall require a repeat of the sequence. <br />Reserve Capacity Test: <br />The engine shall be started and kept running until the engine and engine compartment <br />temperatures are stabilized at normal operating temperatures and the battery system is fully <br />charged. <br />The engine shall be shut off and the minimum continuous electrical load shall be activated for 10 <br />minutes. <br />All electrical loads shall be turned off prior to attempting to restart the engine. The battery system <br />shall then be capable of restarting the engine. Failure to restart the engine shall be considered a <br />test failure of the battery system. <br />Alternator Performance Test at Idle: <br />The minimum continuous electrical load shall be activated with the engine running at idle speed. <br />The engine temperature shall be stabilized at normal operating temperature. <br />The battery system shall be tested to detect the presence of battery discharge current. The <br />detection of battery discharge current shall be considered a test failure. <br />Alternator Performance Test at Full Load: <br />The total continuous electrical load shall be activated with the engine running up to the engine <br />manufacturer’s governed speed. <br />The test duration shall be a minimum of 2 hours. <br />Activation of the load management system shall be permitted during this test. <br />An alarm sounded by excessive battery discharge, as detected by the system, or a system voltage <br />of less than 11.8 V dc for a 12 V nominal system or 23.6 V dc for a 24 V nominal system, for more <br />than 120 seconds, shall be considered a test failure. <br />ATTY/AGR.2025.089/Fire Apparatus Solutions (Purchase of Spartan-LTC 105' TDA) (Page 17 of 150)