User's Manual

PDUs
Each Enterprise Virtual Array rack has either a 50- or 60-Hz, dual PDU mounted at the bottom rear
of the rack. The PDU placement is back-to-back, plugs facing toward the front (Figure 17 (page
22)), with circuit breaker switches facing the back (Figure 18 (page 22)).
• The standard 50-Hz PDU cable has an IEC 309, 3-wire, 30-A, 50-Hz connector.
• The standard 60-Hz PDU cable has a NEMA L6-30P, 3-wire, 30-A, 60-Hz connector.
If these connectors are not compatible with the site power distribution, you must replace the PDU
power cord cable connector. One option is the NEMA L5-30R receptacle, 3-wire, 30-A, 60-Hz
connector.
Each of the two PDU power cables has an AC power source specific connector. The circuit
breaker-controlled PDU outputs are routed to a group of four AC receptacles. The voltages are
then routed to PDMs, sometimes called AC power strips, mounted on the two vertical rails in the
rear of the rack.
Figure 17 Dual PDU—front view
4. Power receptacle schematic1. PDU B
5. Power cord2. PDU A
3. AC receptacles
Figure 18 Dual PDU—rear view
3. Main circuit breaker1. PDU B
4. Circuit breakers2. PDU A
PDU A
PDU A connects to AC PDM A1–A4.
22 EVA4400 hardware