GE D90 Plus Instruction Manual page 449

CHAPTER 9: EQUIPMENT MANAGER
PLUS
D90 LINE DISTANCE PROTECTION SYSTEM – INSTRUCTION MANUAL
Function
Range: Enabled, Disabled
Default: Disabled
This setting enables and disables the battery monitor element.
Input
Range: any contact input or OFF
Default: OFF
This setting specifies the contact input used to monitor the battery voltage.
High DC Volts
Range: 38 to 275 volts in steps of 1
Default: 143 volts
This setting is used to detect battery overcharging. This can result in loss of life, loss of
electrolyte, and thermal runaway. This setting should be set above the expected voltage
during an equalization charge.
Low DC Volts
Range: 38 to 275 volts in steps of 1
Default: 107 volts
This setting is used to detect battery undercharging, which can lead to reduced cell
capacity and sulfation. An undervoltage condition will also occur due to a charger
failure.
Supply Fail
Range: any equipment manager operand or shared operand
Default: OFF
This setting selects the input connected to the AC supply failure contact.
Charger Fail
Range: any equipment manager operand or shared operand
Default: OFF
This setting selects the input connected to the charger critical failure contact.
Breaker Trip
Range: any equipment manager operand or shared operand
Default: OFF
This setting selects the input connected to the DC distribution breaker trip contact.
DC Ground Fault
Range: any equipment manager operand or shared operand
Default: OFF
This setting specifies the input connected to the DC ground fault contact.
Alarm Delay
Range: 2 to 300 seconds in steps of 1
Default: 60 seconds
This setting specifies the time required for a field contact to be asserted before the
corresponding alarm is declared.
Block
Range: any equipment manager operand or shared operand
Default: OFF
Assertion of the operand assigned to this setting blocks operation of the battery monitor
element.
BATTERY MONITOR
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