Page 210 - Power Quality in Electrical Systems
P. 210
192 Chapter Thirteen
AC power
Source UPS PC
one-phase
Battery
Figure 13.2 Block diagram of a single-phase battery-powered UPS sup-
plying a PC.
By-pass
PC
AC power
source UPS PC
three-phase
PC
Battery
Figure 13.3 Block diagram of a three-phase battery-powered UPS
supplying multiple PCs.
By-pass
N 6-jack
L
AC power
Source UPS G
one-phase
Clients
Power cable Data cable
Battery
Figure 13.4 Battery-powered UPS supplying a PC local area network (LAN).
