PDU plugs, circuit breakers, and receptacles
The PDU plugs must be appropriate for the power sources at the installation
sites.
Table 4-8 PDU plugs, circuit breakers, and receptacles on page 4-10
lists the plugs on the end of the PDU power cords. The power distribution
panel at the installation site must have receptacles that match these plugs.
Note: Depending on the configuration, the HUS VM storage system may draw
considerably less power than the rating of the PDU plugs. Use the weight and
power calculator to determine the power draw for a specific system. See the
note under Electrical specifications on page 4-8.
Table 4-8 PDU plugs, circuit breakers, and receptacles
Phase Location PDU Plug
Operating /
Max Voltage
Rating
Max
Current
Rating
No. of CB
per PDU
Breaker
Rating
Power
Supply
Receptacle
Single USA NEMA L6 30P
twistlock
2 pole, 3 wire
A + B + gnd
208 VAC /
250 VAC
32 A 2 UL489 16 A,
20 A trip
2 pole, 3 wire
208 VAC
A + B + gnd
Outside
USA
IEC 309, blue
2 pole, 3 wire
A + B + gnd
230 VAC /
250 VAC
32 A 2 UL489 16 A,
20 A trip
2 pole, 3 wire
208 VAC
A + B + gnd
Three USA NEMA L15 30P
3 pole, 4 wire
A + B + C + gnd
208 VAC /
240 VAC
30 A per
phase
3 UL489 15 A
2 pole
2 pole, 3 wire
220 VAC
A-B or B-C +
gnd
APAC,
EMEA
IEC 309, red
4 pole, 5 wire
A + B + C + Neut
+ gnd
400 VAC /
415 VAC
16 A per
phase
6 16 A
2 pole
1 pole, 3 wire
200 VAC
A-N or B-N or
C-N + gnd
Required number of plugs in each PDU
per chassis
Controller chassis Drive chassis Same power
cord and plug
for all power
supplies.
4 4
Required number of PDUs per rack Controller rack Drive rack Same power
cord and plug
for all PDPs.
4 4
NOTE: The numbers in this table were taken from the PDU manufacturer’s specifications. Detailed PDU
specifications are located in Appendix C. See PDU specifications on page C-6.
Power connection diagrams
The following illustrations show the correct way to connect the PDUs to the
PDPs. When connected as shown, either of the AC inputs can fail and the
system will still operate normally.
4-10
Site preparation
Hitachi Unified Storage VM Block Module Hardware User Guide
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