Manual Part 5
EN/LZT 720 0234 Uen R2A
BF U-21
Battery Fuse Unit
Unit Descri p tion
The Battery Fuse Unit (BFU-21) monitors and controls the battery. It cuts off the
load to the RBS at low battery voltage, w hen the tempe ra ture of the battery is
too high or if there is a short circuit between th e distribution cables.
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BFU-21
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