Dell E600I manual DC Power Entry Modules, Cable and Connector Requirements, Install the DC PEMs

DC Power Entry Modules

The system requires a minimum of one load-sharing PEM to operate, but two are recommended for redundancy. Connect the E600 PEMs to the appropriate branch circuit protection as defined by local electrical codes.

For full redundancy, each PEM must be attached to an independent power source with a dedicated circuit breaker.

Figure 6-5. DC Power Entry Module

Voltage LED Status LED

Handle

Studs

48V in Status

Over Current Protector

Finger Barrier

CC-E600-PWR-DC

CAUTION - Use copper

conductors only

-48/-60Vdc 75A

Locking Screws

Cable and Connector Requirements

1You must provide your own cables to connect to a remote power source in your equipment rack. Verify that your cables are:

•rated for at least 80A service to allow for a fully loaded E600i system at low input voltage per your local electrical codes

•limit voltage drop across the cable length to 0.5V or less

2Before you make the cable connections, apply a coat of anti-oxidant paste to unplated metal contact surfaces.

3File unplated connectors, braided straps, and bus bars to a shiny finish. It is not necessary to file and coat tinned connectors or other plated connection surfaces, such as on the PEM studs.

Install the DC PEMs

To install a DC PEM:

Step Task

1Make sure that the remote power source (the circuit breaker panel) is in the OFF position.

2Make sure that the over current protector (located on the PEM front panel) is in the OFF position.

Power Supply 25