Liebert 350-500 VA user manual Transfer Switch, Battery Charger, Inverter, Major Components

MAJOR COMPONENTS
Input	TVSS &	Transfer	Output
L			L
	EMI/RFI
		Switch
	Filters

Battery	Battery	Inverter
Charger

N N

G G

Transient Voltage Surge Suppression (TVSS) & EMI / RFI Filters

These UPS components provide surge protection and filter electro- magnetic interference (EMI) and radio frequency interference (RFI). They minimize surges or interference present in the utility line and keep the sensitive equipment protected.

Transfer Switch

In Normal mode the Transfer Switch passes utility AC power to the connected load. When input utility voltage or frequency is outside acceptable limits, the transfer switch activates and transfers the UPS to battery.

Battery Charger

In Normal mode, the Battery Charger converts utility AC power into regulated DC power to float charge the battery. It is continuously charging the battery whenever the UPS is plugged into a power outlet and utility power is within acceptable limits—even if the UPS is turned OFF.

Battery

The PowerSure PST utilizes a valve-regulated, nonspillable, lead acid battery. To optimize battery life, operate the UPS in an ambient tem- perature of 68°-77°F (20°-25°C).

Inverter

When utility power fails, the Inverter draws energy from the battery and inverts it into a regulated stepped sinewave supplying power for equipment connected to the orange receptacles.

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