Dell H955N User Manual page 43

Table 6. Settings (continued)
Description
Battery Saving Mode
On Battery Notice Delay
Site Wiring Fault Alarm
Bypass Voltage Low Limit
Bypass Voltage High Limit
Qualify Bypass
Available Settings
[Disabled] [10%] [20%] [30%]...[100%]
The UPS output is turned off in five minutes if the
UPS is on battery and output power is below the
selected level.
[0s] [1s] [2s]...[99s]
The UPS issues a "UPS on battery" notice in the
specified number of seconds after the UPS starts to
discharge the batteries.
[Enabled] [Disabled]
[-6%] [-7%]...[-20%] of nominal
The Bypass operation is disabled if the measured
bypass voltage level is below the nominal output
voltage (-15%).
The Qualify Bypass setting may overrule the
NOTE:
Bypass Voltage Low Limit setting.
[+6%] [+7%]...[+20%] of nominal
The Bypass operation is disabled if the measured
bypass voltage level is above the nominal output
voltage (+10%).
The Qualify Bypass setting may overrule the
NOTE:
Bypass Voltage High Limit setting.
[Always] [Never] [Bypass Disabled]
If Always, Bypass operation is allowed when:
S Bypass voltages > the value set for Bypass
Voltage Low Limit
S Bypass voltages < the value set for Bypass
Voltage High Limit
S Bypass frequency > (nominal frequency -3 Hz)
S Bypass frequency < (nominal frequency +3 Hz)
S Inverter is synchronized with Bypass when
unsynchronized transfers are disabled by the
value set for Unsynchronized Transfers
If Never, Bypass operation is always allowed; voltage
and frequency limits are not in use.
If Bypass Disabled, Bypass operation is prohibited.
Default Setting
Disabled
0s
Disabled for 208V
models; Enabled for
all others
-15% of nominal
+10% of nominal
Always
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Operation