Installation manual

Installing DC Power Entry Modules | 35
8
Installing DC Power Entry Modules
The C300 has eight supply slots at the front-bottom of the chassis ( Figure 8-2 ). The slots 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 C300 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 7.
• To protect against high-voltage shock, install a supply blank on all unused supply slots.
NOTE: The C300 DC Power Entry Module does not support PoE or PoE+ line cards.
NOTE: Some CH-C300 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
Redundancy
For full facility redundancy, install two DC PEMs. Each PEM must be attached to an independent 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 source (a circuit breaker panel, for example) in
your equipment rack or facility. Cables must be sized to meet the following criteria:
Table 8-1. Input voltage
Input Ranges Maximum
-44V (minimum) 1408 watts
-48V (typical) 1536 watts
-55V (maximum) 1760 watts
Table 8-2. Operating Ranges
Ambient Temperature
Operating Range -5° C to +40° C
Storage Range -40° C to +70 ° C
Humidity
Operating Range 5-85% RH
Storage Range 5-90% RH