Battery Monitor; Indications And Wiring - GE D90 Plus Instruction Manual

CHAPTER 9: EQUIPMENT MANAGER

Battery monitor

Indications and wiring

PLUS
D90 LINE DISTANCE PROTECTION SYSTEM – INSTRUCTION MANUAL
Figure 431: Breaker arcing current logic
The battery monitor checks the health of the DC battery system. It provides an analog
indication of the current DC voltage derived from a contact input wired between the
positive and negative rails of the battery system. This signal is used to generate high and
low DC voltage alarms. This function also monitors and conditions the auxiliary alarm
contacts from the battery charger.
The following indications and alarms are provided for the battery monitor function.
Battery monitor alarms and indications
BATTERY VOLTAGE..............................Displays the present value of the battery voltage.
HIGH DC VOLTAGE..............................Indicates the battery DC voltage is greater than the
LOW DC VOLTAGE...............................Indicates the battery DC voltage is less than the minimum
SUPPLY FAIL..............................................Indicates the AC supply to the battery charger has failed.
CHARGER FAIL.......................................Indicates the battery charger has failed.
BREAKER TRIP........................................Indicates a DC distribution breaker has operated.
DC GND FLT..............................................Indicates a battery DC ground fault.
maximum setting value.
setting value.
BATTERY MONITOR
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