Major Components; Transient Voltage Surge Suppression (Tvss) And Emi/Rfi Filters; Relay; Figure 5 Line Diagram Of Powersure Psi 1000Va & 1440Va - Liebert PowerSure PSI 1000 - 3000VA 60 Hz 120V User Manual

3.0 M C
AJOR OMPONENTS
Figure 5 Line diagram of PowerSure PSI 1000VA & 1440VA
Input
EMI/RFI
Filter
Charger
G
Figure 6 Line diagram of PowerSure PSI 1920VA, 2200VA & 3000VA
Input
EMI/RFI
Filter
Charger
G
3.1

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 surges or interference present in the utility
line and keep the sensitive equipment protected.
3.2

Relay

In Normal mode the Relay passes utility AC power to the connected load. When input utility voltage
or frequency is outside acceptable limits, the Relay activates and transfers the UPS to battery.
Relay
Battery
Relay
Transformer
Battery
6
AVR
Transformer
Inverter
AVR
DC-to-DC
Converter

Major Components

Output
G
Output
Bi-Directional
Converter
G