System Description
True Online 6-20k UPS User Manual
7
3. SYSTEM DESCRIPTION
3.1 Transient Voltage Surge Suppression (TVSS) and EMI/FRI Filters
These UPS components provide surge protection and filter both electromagnetic
interference (EMI) and radio frequency interference (RFI). They minimize any surge or
interference present in the utility line and keep the sensitive equipment protected.
3.2 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 waveform of the
input current used by the UPS is near ideal. Extracting this sine wave input current achieves
two objects:
z The utility power is used as efficiency as possible by the UPS.
z 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 UPS.
3.3 Inverter
In normal operation, the inverter utilize the DC output of the power factor correction
circuit and inverters it into precise, regulated sine wave AC power. Upon a utility power
failure, the inverter receives its required energy from the battery through the DC-to-DC
converter. In both modes of operation, the UPS inverter is on-line and continuously
generating clean, precise, regulated AC output power.
To Next Page
Loading...
Need help?
General
