20.2.1 CB Switches on the Dedicated Power Distribution Unit
20.2.1 CB Switches on the Dedicated Power Distribution Unit
The PDU has circuit breaker switches (CB switches) on it. Pull up a CB switch to cut off electricity. Push it in to have electricity supplied.
- - In the case of the SPARC M12-2S
A in Figure 20-3 shows the locations of CB switches. There are six CB switches per PDU. For single-phase power feed, 8 PDUs are mounted per rack and there are 48 CB switches. For three-phase power feed, 6 PDUs are mounted per rack, and there are 36 CB switches.
(For three-phase power feed, the number of mounted PDUs is different, but the locations of CB switches on the PDU are the same.)- In the case of the SPARC M10-4S
A in Figure 20-4 shows the locations of CB switches for single-phase power feed. Also, B in Figure 20-4 shows the locations of CB switches for three-phase power feed. There are 12 CB switches per PDU, and 24 CB switches per rack.
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