GE Grid Solutions
994-0081-3.00-21 GE Information
Storage and Battery
Environmental Tolerance
As a general rule, always store the D25 IED in an environment compatible with operating
conditions
Temperature:
Standard -40° to +90°C
Alphanumeric Display (LCD) -20° to +70°C
Graphic Display Panel 0° to +70°C with (GDP)
Relative humidity 0 to 95%, non-condensing
Note: Exposure to excessive temperature or other extreme environmental conditions might cause
damage and/or unreliable operation
Battery
A Panasonic BR
2
/
3
A, or equivalent, battery will maintain the contents of the NVRAM for over 5
years, if system power is applied.
A Tadiran Lithium battery, TL-2100S or equivalent, will maintain the contents of the NVRAM
on the 20 MB Memory Expansion board, after the paper tab has been removed, for around:
• 4 months, powered OFF
• 10 years, powered ON
Note: 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.
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