Instruction Manual

• Thestandard50-HzPDUcablehasanIEC309,3-wire,30-A,50-Hzconnector.
• The standard 60-Hz PDU cable has a NEM A 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 p ower
cord cable 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 (see Figure 50). The
voltages are then routed to PDMs, sometimes referre d to as AC power strips, m ounted on the two vertical
rails in the rear of the rack.
CXO7570
A
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2
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Figure 50 Dual PDU assembly—top view
1. PDU 1
2. PDU 1 AC receptacles
3. PDU 1 circuit breaker
4. PDU 2
5. PDU 2 AC receptacles
6. PDU 2 circuit breaker
PDU 1
PDU 1 connects to AC power distribution source 1. A PDU 1 failure:
• Disables the power distribution circuit.
• Removes p
ower from PDMs 1, 2, 3, and 4.
• Disables PS 1 in the drive enclosures.
• Disables the upper controller power supply.
PDU 2
PDU 2 connects to AC power distribution source 2. A PDU 2 failure:
• Disables the power distribution circuit.
• Removes power from PDMs 5, 6, 7, and 8.
• Disables PS 2 in the drive enclosures.
• Disables the lower controller power supply.
PDU assembly
The dual
PDU assembly (see Figure 51) mounts in the lower rear of the rack. This assembly contains t wo
PDUs: P
DU 1 and PDU 2 . Each PDU has a 250-VAC, 30-A circuit breaker (6 and 12) and four I EC
320-C13 AC output power receptacles (2 through 5, and 8 through 11). The circuit breakers and AC
receptacles are accessible when the PDU assembly is in the upright position.
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Storage system hardware components