D25User's Manual GE Grid Solutions158 994-0081-3.00-21 GE InformationStorage and BatteryEnvironmental ToleranceAs a general rule, always store the D25 IED in an environment compatible with operatingconditionsTemperature:Standard -40° to +90°CAlphanumeric Display (LCD) -20° to +70°CGraphic Display Panel 0° to +70°C with (GDP)Relative humidity 0 to 95%, non-condensingNote: Exposure to excessive temperature or other extreme environmental conditions might causedamage and/or unreliable operationBatteryA Panasonic BR2/ 3A, or equivalent, battery will maintain the contents of the NVRAM for over 5years, if system power is applied.A Tadiran Lithium battery, TL-2100S or equivalent, will maintain the contents of the NVRAMon the 20 MB Memory Expansion board, after the paper tab has been removed, for around:• 4 months, powered OFF• 10 years, powered ONNote: If the D25 is to be stored for extended periods, you may wish to disconnect the battery.The Battery status is provided during the D25 start-up sequence.
