Staco Energy FirstLine, User Manual, Page: 32 / 43

FirstLine UPS
Form No. 003-2323 Rev B 28
OverLoad
Inverter
Load Time Supported
100% Continuous
110% 2 Minutes
125% 30 Seconds
When the overload limits are exceeded while running on inverter, an automatic transfer to
bypass occurs. When the overload clears, an automatic transfer to inverter occurs, unless
there have been three overloads within one hour. Inverter overload performance is not
guaranteed while running on battery.
Bypass
Load Time Supported
110% Continuous
125% 2 Minutes
150% 10 Seconds
700% 5 Cycles
When the overload limits are exceeded while on bypass, the static switch will turn off. Note
that external circuit protection devices may operate during overload conditions.
Rectifier
The rectifier is microprocessor controlled using algorithms that limit the input current to
levels that protect the rectifier components. If the inverter requires more current than the
rectifier can provide, the battery will supply current as needed. Thus, the rectifier will supply
as much energy as is available from the rectifier input. At 80% input voltage, the rectifier
can support the rated inverter load, but does not have any extra capacity to charge the
battery. At higher line voltages, there is enough capacity to charge the battery while
supporting rated load.
The rectifier uses an advanced high frequency Pulse Width Modulated design that presents
low current distortion to the input power source. Its high power factor means that maximum
power is obtained for a given input current.