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Operation (continued)
The UPS will then begin a countdown. If the UPS is still overloaded at the end of the countdown, the UPS will automatically go to BYPASS
MODE to protect its inverter. The duration of the countdown varies with the severity of the overload, as follows:
Overload Condition Countdown Duration
102% - 125% 1 minute
125% - 150% 30 seconds
> 150% Immediate Bypass
Bypass Messages
While in BYPASS MODE, the UPS monitors its input voltage and passes that input power along to connected equipment. The UPS will not
provide battery backup in BYPASS MODE. If the output voltage deviates from an acceptable range (between 15% higher and 20% lower than
nominal), the UPS displays the condition on its LCD and stops supplying output power to its load. If power levels return to an acceptable level,
the UPS resumes supplying power to the load, and its LCD reports that output voltage was too high or too low at one time, but has returned
to nominal.
Bypass Voltage Conditions
L1 > 15% Higher
Than Nominal Voltage
L2 > 15% Higher
Than Nominal Voltage
L1 > 20% Lower
Than Nominal Voltage
L2 > 20% Lower
Than Nominal Voltage
L1 Voltage Was Too High,
Now Returned to Nominal Voltage
L2 Voltage Was Too High,
Now Returned to Nominal Voltage
L1 Voltage Was Too Low,
Now Returned to Nominal Voltage
L2 Voltage Was Too Low,
Now Returned to Nominal Voltage
BYPASS AC1 HIGH
LOAD1 = XXX% X.XKW
LCD Screen Messages
BYPASS AC2 HIGH
LOAD1 = XXX% X.XKW
BYPASS AC1 LOW
LOAD1 = XXX% X.XKW
BYPASS AC2 LOW
LOAD1 = XXX% X.XKW
BYPASS AC1 WAS HI
LOAD1 = XXX% X.XKW
BYPASS AC2 WAS HI
LOAD1 = XXX% X.XKW
BYPASS AC1 WAS LO
LOAD1 = XXX% X.XKW
BYPASS AC2 WAS LO
LOAD1 = XXX% X.XKW
OVERLOAD!
LOAD1 = XXX% X.XKW
OVERLOAD!
LOAD2 = XXX% X.XKW
Overload Messages
When the UPS detects an output overload, its LCD will switch to the following display: