Vertiv™ NetSure™ Control Unit (NCU) User Manual
BTRM Temp High 2: Sets the BTRM Temperature High 2 alarm point. If battery temperature exceeds this setting, system
voltage is lowered to the “BTRM Voltage” setting (if “BTRM Action” is set to “Lower Voltage”).
BTRM Temp High 1: Sets the BTRM Temperature High 1 alarm point.
BTRM Temp Delta Over Ambient: Only visible if a selection is made for the Main Ambient Temp Sensor (the sensor which
displays the ambient temperature on the Web Interface’s Homepage) and a selection is made for the BTRM Temp Sensor
(see “Setting Temperature Sensors” on page 39). See also “Setting Battery Thermal Runaway Management (BTRM) Feature”
on page 40. The value represents the temperature difference between the BTRM Temp Sensor value and the Main Ambient
Temp Sensor value that will generate the BTRM Temp Delta Alarm, based on the selection below.
BTRM Temp Delta Alarm: Only visible if a selection is made for the Main Ambient Temp Sensor (the sensor which displays
the ambient temperature on the Web Interface’s Homepage) and a selection is made for the BTRM Temp Sensor (see
“Setting Temperature Sensors” on page 39). See also “Setting Battery Thermal Runaway Management (BTRM) Feature” on
page 40. Determines the criteria for which the “BTRM Temp Delta” alarm will activate. Set to “Amb Delta” to activate the
alarm if the temperature difference exceeds the set point above. Set to “High1+Amb Delta” to activate the alarm if both the
BTRM Temp Sensor value exceeds the BTRM Temp High1 set point AND the temperature difference exceeds the set point.
BTRM Action:
- Disabled: Disables the Battery Thermal Runaway Management feature.
- Lower Voltage: Sets the Battery Thermal Runaway Management feature to reducing the output voltage when battery
temperature exceeds the BTRM Temperature High 2 alarm point.
When enabled, the following parameter can be set.
BTRM Voltage: Voltage that the system is set to when battery temperature exceeds the “BTRM Temperature High 2”
alarm point.
• Low Capacity Point: Battery low capacity alarm set point.
• Battery Current Limited Mode: Selects the battery current limit mode (Yes or No).
NOTE!
If battery current limit is utilized, it is important to also have provisions for battery testing/monitoring.
NOTE!
If the battery is ever disconnected, disable battery current limit until the battery is reconnected.
• Battery Current Limit: Maximum battery charging current setting. For example, a value of 0.150C10 means that the
charging current is limited to 15% of the battery’s nominal capacity.
• Over Current Limit: Battery over current alarm setting. For example, a value of 0.300C10 means that when the charging
current reaches 30% of the battery’s nominal capacity, an alarm will be extended.
• Automatic Equalize: Enables or disables the Automatic Equalize Charge feature. When enabled, the following parameters
can be set.
Equalize Start Current: The system is transferred to Equalize Charge mode when battery charge current increases to this
setting. For example, a value of 0.060C10 means that an Automatic Equalize is started if the battery charge current is
greater than 6% of the battery’s nominal capacity.
Equalize Start Capacity: The system is transferred to Equalize Charge mode when remaining battery capacity decreases to
this setting.
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