Specifications

60-ampere power
Customers who prefer fewer but higher-amperage connections from their ac line current source
distribution unit
to the rp8400 can use the 60-ampere power distribution unit (PDU). This PDU is designed to fit
horizontally in a standard 19-inch cabinet, and it occupies just three EIA units of racking space.
This PDU is sold separately and can be ordered with any HP server solution. PDU product
numbers are E7683A (North America) and E7684A (international). Figure 15 shows the 60-
ampere PDU.
figure 15. The 60-ampere PDU provides four breaker protected outlets from a single ac line input.
Each 60-ampere PDU contains eight C19 outlets spread evenly among four 20-ampere branch
circuits (two C19 outlets per branch). Each of the four branch circuits is protected by a circuit
breaker that is either 20 amperes (United States) or 16 amperes (international). All 60-ampere
PDUs are delivered with an IEC-309-63A plug.
The maximum amperage is 60 amperes through the entire PDU and 20 amperes per breaker.
Both limits must be met. If 20 amperes are being drawn per breaker, only three sets may be used.
Figure 16 illustrates an example of using 60-ampere PDUs to configure redundant power for two
rp8400 servers.
figure 16. Configuring two rp8400 servers with two 60-amp PDUs for redundant power.
The blue cords (that is, the top four double-arrowed lines) are the primary power connections
needed for normal operation. In this example, both primary connections from each server are
plugged into separate branch circuits. The remaining PDU outlets can be used to power other
components, as long as the rating of 16/20 amperes per PDU branch circuit breaker and 60
amperes per PDU is not exceeded.
For redundant power inputs, the red cords (the bottom four double-arrowed lines) are added.
These represent secondary power connections. If, as shown in the figure, the second PDU is
plugged into a second grid, this configuration provides protection against:
• losing power from a single power grid
• accidental tripping of one or two circuit breakers
• accidental disconnection of a single PDU power cord
• accidental disconnection of up to two power cords per system
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