QFX5100 Power System

The two power supplies in QFX5100 switches are hot-removable and hot-insertable field-replaceable units (FRUs). The power supplies are installed in the switch at the factory. You can install replacement power supplies from the management panel without powering off the switch or disrupting the switching function.

The AC power supply in 1 U QFX5100 switches is 650 W; the AC power supply in the 2 U, QFX5100-96S switch, is 850 W. Both power supplies look identical. Be sure to use the correct power supply for your chassis product SKU (see Table 1).

See Figure 1 for an example of the 1 U design and Figure 2 for an example of the 2 U power supply.

Figure 1: 1 U AC Power Supply in QFX5100 Switches

1 — Handle	3 — AC appliance inlet
2 — Security latch	4 — Ejector lever

Figure 2: 2 U AC Power Supply in a QFX5100-96S Switch

The power supply provides FRU-to-port or port-to-FRU airflow depending on the product SKU you purchase. On legacy switches, or switches with an LCD, this airflow is called back-to-front and front-to-back. The power supplies have color-coded handles with a fan icon. See Figure 3 for an example of the power supply. A power supply with a blue handle denotes FRU-to-port airflow; a power supply with a gold-colored handle denotes port-to-FRU airflow.

Figure 3: Power Supply Handle Detail

1 — Fan icon on handle

Table 1 shows the different power supplies and their direction of airflow.

To avoid electrical injury, carefully follow instructions in Connecting AC Power to a QFX5100 Device.

Table 2 describes the AC power specifications for a QFX5100 device.

Detachable AC power cords are shipped with the chassis, if you include them as part of your order. The coupler is type C13 as described by International Electrotechnical Commission (IEC) standard 60320. The plug end of the power cord fits into the power source outlet that is standard for your geographical location.

Table 3 lists AC power cord specifications provided for each country or region.

Figure 4 illustrates the plug on the power cord for some of the countries or regions listed in Table 3.

Figure 4: AC Plug Types

Figure 5 shows the location of the LEDs on the power supply.

Figure 5: AC Power Supply LEDs on a QFX5100 Switch

Table 4 describes the LEDs on the AC power supplies.

The power supplies in QFX5100 devices (see Figure 6) are hot-removable and hot-insertable field-replaceable units (FRUs) that you can install in 1 U DC product SKUs of QFX5100 devices without powering off the device or disrupting the switching function.

The DC power supply in 1 U product SKUs of QFX5100 is 650 W with dual feeds for power resiliency. The DC power supply in the 2 U product SKU, QFX5100-96S, is 850 W with dual feeds for power resiliency. Both power supplies have a similar design. See Figure 6 for an example of the 1 U design and Figure 7 for an example of the 2 U power supply.

Figure 6: DC Power Supply in QFX5100 Devices

1 — Terminal block	3 — Ejector lever
2 — ESD grounding point	4 — Handle

To supply sufficient power for 1 U models, terminate the DC input wiring on a facility DC source that is capable of supplying a minimum of 7 A at –48 VDC.

Figure 7: DC Power Supply for QFX5100-96S Devices

1 — Terminal block	3 — Ejector lever
2 — ESD grounding point	4 — Handle

Figure 8: DC Power Supply Faceplate in QFX5100 Devices

1 — Shunt negative input terminals (-48V)	5 — ESD grounding point
2 — Shunt positive input terminals (+RTN)	6 — Fault LED
3 — Terminal block	7 — Output LED
4 — Ejector lever	8 — Input LED

To avoid electrical injury, carefully follow instructions in Install and Remove QFX5100 Power Supplies.

Table 5 describes the DC power specifications for DC product SKUs of the QFX5100 device.

Figure 9 shows the location of the LEDs on the DC power supply.

Figure 9: DC Power Supply Faceplate on a QFX5100 Switch

1 — Input LED	3 — Fault LED
2 — Output LED

Table 6 describes the LEDs on the DC power supplies.