ENVIRONMENTAL TESTS33 Thermal Cycli

ENVIRONMENTAL TESTS33 Thermal Cycling Test (LER Motive Applications)33.1 This test determines the electrical energy storage system’s ability to withstand temperature fluctuations that may be anticipated during the end-use application. This test is only applicable to LER motive applications.33.2 A fully charged electric energy storage system (MOSOC per 6.1) is to be placed in a test chamber and subjected to the following cycles in (a) – (e). At the conclusion of the cycling, the samples are toremain at room temperature, 25 ±5°C (77 ±9°F) for 24 h.a) Raising the chamber-temperature to 75 ±2°C (167 ±3.6°F) within 30 min and maintaining thistemperature for 6 h.b) Reducing the chamber temperature to 20 ±2°C (68 ±3.6°F) within 30 min and maintainingthis temperature for 2 h.c) Reducing the chamber temperature to minus 40 ±2°C (minus 40 ±3.6°F) within 30 min andmaintaining this temperature for 6 h.d) Raising the chamber temperature to 20 ±2°C (68 ±3.6°F) within 30 min.e) Repeating the sequence for a further 9 cycles