Cisco Systems ME 6500 Series Connecting the Power Supplies, Connecting a DC-Input Power Supply

Connecting the Power Supplies

Step 3 Place the ground lug against the ground pad, making sure that there is solid metal-to-metal contact, and secure it to the chassis with two M4 screws. Ensure that the ground lug and the ground wire do not interfere with other cables or equipment.

Step 4 Prepare the other end of the system ground wire and connect it to an appropriate ground point in your site to ensure adequate earth ground for the switch.

Figure 7 Attaching the System Ground

System ground pad

(M4) Phillips-head machine screws

o

+ -

OUTPUT	INPUT	FAN
OK
	OK	OK

Ground System lug ground

wire

o

+ -

OUTPUT	INPUT	FAN
OK
	OK	OK

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Connecting the Power Supplies

The ME 6524 switch chassis can physically accommodate two power supplies. Two types of power supplies are currently available:

•A 400 W DC-input power supply

•A 400 W AC-input power supply

The ME 6524 chassis supports the following power supply configurations:

•Two AC-input power supplies

•Two DC-input power supplies

•One AC-input power supply and one DC-input power supply

The next two sections provide cabling instructions for both types of power supplies.

Connecting a DC-Input Power Supply

If your chassis is equipped with DC-input power supplies, you need to run power cables from source DC to the terminal block on the DC-input power supply.

Warning Before performing any of the following procedures, ensure that power is removed from the DC circuits. To ensure that all power is removed, locate the circuit breakers or fuses on the DC power lines that service the DC circuits. Turn OFF the DC power line circuit breakers and remove the DC power line fuses. Statement 322

Cisco ME 6500 Series Ethernet Switch Installation Note

16 78-17360-02