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Installing DC Power Entry Modules
The C7004/C150 has six power supply slots at the front-bottom of the chassis
accept either AC power supplies (PSUs) or DC Power Entry Modules (PEMs). Dell Networking does not
support the use of a combination of AC and DC.
• If you select DC, the C7004/C150 requires at least one DC PEM for operation, but Dell Networking
recommends a one-plus-one redundancy configuration. Those DC PEMs are inserted in slots 0 and 2.
• To protect against high-voltage shock, install a power supply blank on all unused power supply slots.
NOTE: The C7004/C150 DC Power Entry Module does not support PoE or PoE+ line cards.
NOTE: Some C7004/C150 chassis may require Dell Networking assistance when using some DC power
supplies. Please contact the Dell Networking TAC if you experience any difficulty during installation.
Recommended Normal Operating Conditions
Table 8-1. Input voltage
Input Ranges
-44V (minimum)
-48V (typical)
-55V (maximum)
Table 8-2. Operating Ranges
Ambient Temperature
Operating Range
Storage Range
Humidity
Operating Range
Storage Range
Redundancy
For full facility redundancy, install two DC PEMs. Each PEM must be attached to an independent power
source with a dedicated circuit breaker sized in accordance with your local building and electrical safety
codes.
Cable and Connector Requirements
You must provide your own cables to connect to a remote power source (a circuit breaker panel, for
example) in your equipment rack or facility. Cables must be sized to meet the following criteria:
Maximum Power
1408 watts
1536 watts
1760 watts
-5° C to +40° C
-40° C to +70 ° C
5-85% RH
5-90% RH
(Figure
8-2). The slots
Installing DC Power Entry Modules
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