Dell EMC PowerMax Series - Procedure A, Task 2: Dell EMC Customer Engineer

Customer’s
PDU 1
Customer’s
PDU 2
Circuit
breaker
off (0)
Circuit
breaker
off (0)
Circuit breakers - Numbers
27
28
29
30
Circuit breakers - Numbers
...
8
9
10
11
...
PDU 2
CB 9
PDU 1
CB 28
Labels on
customer
power lines
Voltmeter
TYPE PM89
CLASS 25 01
0
100
240
300
V
Voltmeter
TYPE PM89
CLASS 25 01
0
100
240
300
V
Figure 29. Circuit breakers OFF — No AC power
Procedure A, Task 2: Dell EMC Customer Engineer
Before connecting power to the PowerMax system, make sure that the power for both zone A and zone B are turned OFF. This task is
performed by the Dell EMC Customer Engineer.
NOTE: Do not connect storage bay power zone A and power zone B to the same customer-supplied PDU. The customer
will lose power redundancy and risk Data Unavailability (DU) if the PDU fails or is turned off during a maintenance
procedure.
64 Best Practices for AC Power Connections