HP BL260c Power basics for IT professionals - Page 7

backup. In the event of a loss of power, the UPS always allows power to the server room power

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The only difference between Figures 4 and 5 is that Figure 4 shows the HP servers connected to threephase power. Figure 5. North American power distribution with a backup generator and an automatic transfer switch with HP servers at three phase Figure 6 depicts a UPS for the server room in addition to many of the pieces shown in Figures 4 and 5. This UPS can supply power from three sources: normal power, temporary power, or battery backup. In the event of a loss of power, the UPS always allows power to the server room power panel. Figure 6 shows HP servers connected to single-phase UPS power. 7

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The only difference between Figures 4 and 5 is that Figure 4 shows the HP servers connected to three-
phase power.
Figure 5.
North American power distribution with a backup generator and an automatic transfer switch with HP
servers at three phase
Figure 6 depicts a UPS for the server room in addition to many of the pieces shown in Figures 4 and
5. This UPS can supply power from three sources:
normal power, temporary power, or battery
backup. In the event of a loss of power, the UPS always allows power to the server room power
panel. Figure 6 shows HP servers connected to single-phase UPS power.
7