
Hybrid Ultra
855-350-050_Rev2.0_Instruction Manual
Page
51
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voltage. The battery is reconnected when AC power is restored or after
recharging to a preset threshold.
Disconnect Voltage:
Set the threshold to a level that will protect the
battery from excessive discharge (as recommended by the battery
manufacturer). The LVD contactor will open when the battery discharges
to this level for at least 3 seconds. The default setting varies based on
the Power Modules installed.
Table 25. Default Disconnect Voltage Settings
Module
ICT700-24PM
ICT1500-24PM
ICT700-48PM
ICT1500-48PM
Threshold Voltage
21.0 VDC
42.0 VDC
Reconnect Voltage:
Set the level where the unit will reconnect to the
battery after it has recharged (as recommended by the battery
manufacturer). The "Reconnect Voltage" must be higher than the
Disconnect Voltage to prevent the LVD contactor repeatedly cycling on
and off. The default setting varies based on the Power Modules installed.
Table 26. Default Reconnect Voltage Settings
Module
ICT700-24PM
ICT1500-24PM
ICT700-48PM
ICT1500-48PM
Threshold Voltage
25.0 VDC
50.0 VDC
Table 27. The minimum difference between Disconnect and Reconnect voltages
24 VDC Units
48 VDC Units
2 V
4 V
This setting will be used when charging the battery from an external DC
source (such as a solar system), otherwise once AC power returns the
LVD contactor will automatically close so that the Power Modules can
charge the battery directly.
NOTE: Deeply discharged batteries will not be reconnected as a safety
measure. Refer to the battery manufacturer’s recommendations on
how to proceed with a deeply discharged battery.