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For telecom settings, this limit is often set to 10% (or 0.1C10, i.e., a 10A current limit for a 100Ahr battery). This
is more typical of a design parameter than the need for the setting to be at this level but a setting higher than
this level should be considered to enable the fastest recharge possible without exceeding the battery
manufacturer's maximum value.
Ensure sufficient rectifier capacity is available to cover battery recharge and load requirements.
11.1.6 Low Voltage Disconnect Settings
The LVD disconnect set points are usually a customer generated setting.
As the discharge time increases, the higher the end voltage should be set. For a discharge of <1hr, this may be
as low as 1.75Vpc (42.0V for a "48V" battery), or for an 8-hour discharge, it may be 1.85Vpc (44.4V for a "48V"
battery).
Note that if only one LVD is fitted, LVD2 and LVD3 thresholds are set outside of possible tripping voltages.
This avoids any confusion over which LVD signal is being used by the EM4x energy manager.
EM4x Web UI page: IO Configuration>IO Boards
Toggle LVD latching On
Example:
Site Settings:
11.2 DC System Lead Acid Battery Commissioning Check-List
This section is for a more detailed commissioning process than the Essential Set-up Parameters. It may be
printed out separately and filed for record keeping.
DC System Lead Acid Battery Commissioning Check-List
Site Name:__________________________________________________________________
Tests Without Batteries Connected
Check Float Voltage
Check Load Current
Alarms
NewMar Power System Manual
Model: COMMANDER II AND COMMANDER II+
Date:___________________________
Value
Results
Meter:______
__________ V
Meter:______
__________ A
M-CMDRII 063022
Done
/
/
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Version 1.0
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