Liebert 700-3000 VA Major Components, RECTIFIER/POWER Factor Correction PFC Circuit, Inverter

MAJOR COMPONENTS

	Dynamic
	Bypass
	Rectifier/PFC	Inverter
INPUT	TVSS	OUTPUT
	and
	EMI/RFI
	Filters
	DC to DC
	Converter

BatteryBattery

Charger

N

G

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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