14 Power Supply Concept
In the basic configuration, the PRIMERGY BX600 S2 base unit contains two hot swap power supply units (PSU1 and PSU2 in figure 88). The power supply units adapt automatically to any voltage within the range 200 V - 240 V.
PSU4 | PSU3 |
|
PSU2 | PSU1 |
Figure 88: PRIMERGY BX600 S2 basic unit: power supply units
To provide a redundant power supply, a third or fourth power supply unit can be installed (PSU3 and PSU4 in figure 88).
If one of the four power units fails, the other two/three units will ensure the unit continues to operate normally. The defective power supply unit can be replaced while the unit is still running (hot swap).
IPlease make sure that each of the power supply units is connected to a different phase. This will provide you with additional phase redundancy for high availability configurations. If one phase has failed, the power supply units connected to the other phases keep active. You can get full phase redundancy with up to three power supply units. With four power supply units, two of them are to be connected to one phase (see also “Related Publications” on page 165).
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