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MAJOR COMPONENTS
N
G
TVSS
and
EMI/RFI
Filters
INPUT
Dynamic
Bypass
Rectifier/PFC
Inverter
OUTPUT
DC to DC
Converter
Battery
Battery
Charger
TRANSIENT VOLTAGE SURGE SUPPRESSION (TVSS) AND EMI/RFI
FILTERS
These UPS components provide surge protection, and filter both electromagnetic
interference (EMI) and radio frequency interference (RFI). They minimize any
surges or interference present in the utility line and keep the sensitive equipment
protected.
RECTIFIER/POWER FACTOR CORRECTION (PFC) CIRCUIT
In normal operation, the rectifier/power factor correction (PFC) circuit converts
utility AC power to regulated DC power for use by the inverter, while ensuring
that the waveshape of the input current used by the UPS is near ideal.
Extracting this sinewave input current achieves two objectives: the utility power is
used as efficiently as possible by the UPS, and the amount of distortion reflected
on the utility is reduced. This results in cleaner power being available to other
devices in the building not being protected by the UPStation GXT™.
INVERTER
In normal operation, the inverter utilizes the DC output of the power factor
correction circuit and “inverts” it into precise, regulated sinewave AC power.
Upon a utility power failure, the inverter receives its required energy from the
battery through the DC-DC converter. In both modes of the operation, the UPS
inverter is on-line and continuously generating clean, precise, regulated AC
output power.
BATTERY CHARGER
The battery charger utilizes energy from the utility power and precisely regulates
it to continuously “float” charge the battery system. The battery system charges
whenever the UPStation GXT™ is plugged in.
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