QFX10000 DC Power System

The QFX10000-PWR-DC power supply is a 2500-W, 12-VDC, dual input power supply. The output of each QFX10000-PWR-DC power supply is 12-VDC. The output power is 2500 W.

Each QFX10000-PWR-DC power supply weighs approximately 6 lb (2.7 kg) and has two independent pairs of DC input lugs (Input 1, RTN, –48V/–60V and Input 2, RTN, –48V/–60V) on the faceplate of the power supply. Each inlet requires a dedicated DC power feed. Although each inlet provides sufficient input power to provide full output, always connect to a dedicated DC power feed to provide redundancy. Only one power feed is operational at a time.

DC power models employ electronic A-B input selection. It provides 2n source redundancy and n+1 power supply redundancy using fewer power supplies than you would require in a 2n configuration. Should one power source fail, electronic A-B input selection switches the power supply to the alternate source.

Each QFX10000-PWR-DC power supply has a power switch with international markings for on (|) and off (O), a fan, and four LEDs on the faceplate that indicate the status of the power supply. See Figure 2.

Figure 2: QFX10000-PWR-DC Power Supply

Each power supply connects to the combined power rail in a QFX10008 or QFX10016. The power rail distributes the output power produced by the power supplies to different switch components. Each QFX10000-PWR-DC power supply provides power to all the components in the switch.

A DC power supply can operate with only one input DC feed connected. The RCB only enables the components for which sufficient power is available.

The JNP10K-PWR-DC power supplies do not share power.

QFX10000-PWR-DC power supplies can use the standard bus or the enhanced bus.

Each QFX10000-PWR-DC power supply has its own fan and is cooled by its own internal cooling system. The airflow is from the front of the power supply to the back. Hot air exhausts from the rear of the chassis.

QFX10000-PWR-DC power supplies are supported in only the QFX10008 and QFX10016 redundant configuration. Table 1 lists the power specifications for the QFX10000-PWR-DC power supply used in a QFX10000 modular chassis.

Table 2 shows the physical specifications for a QFX10000-PWR-DC power supply.

The JNP10K-PWR-DC2 power supply provides two power supplies in a single housing that accepts either 60 A or 80 A using four redundant input power feeds. PS_0 and PS_1 each have redundant input feeds: A0 and/or B0 for PS_0 and A1 and/or B1 for PS_1. The input is configured using a set of DIP switches on the power supply faceplate. The output is dependant on the settings of these DIP switches. See Table 3. See Figure 3.

The JNP10K-PWR-DC2 power supplies share power.

Figure 3: JNP10K-PWR-DC2 Power Supply

Chassis with the enhanced bus support the full 5500 W available from the JNP10K-PWR-DC2. Chassis with the standard bus provides 3000 W for power budget from the power management software. To determine whether your system has the standard power bus or the enhanced power bus, see QFX10000 Status Panel.

Table 4 lists the power specifications for the JNP10K-PWR-DC2 power supply used in a QFX10000 chassis.

Table 5 shows the physical specifications for a JNP10K-PWR-DC2 power supply.

A QFX10000-PWR-DC power supply has four LEDs on its faceplate: INP1, INP1, PWR OK, and FAULT. These LEDs display information about the status of the power supply. See Figure 4.

Figure 4: LEDs on a QFX10000-PWR-DC Power Supply in QFX10000 Switches

1 — INP1–Source input 1	3 — PWR OK
2 — INP2–Source input 2	4 — FAULT

Table 6 describes the LEDs in QFX10008 and QFX10016 modular chassis.

A JNP10K-PWR-DC2 power supply module has four LEDs on its faceplate: 1, 2, OK, and the symbol for fault, !. These LEDs display information about the status of the power supply. See Figure 5.

Figure 5: LEDs on a JNP10K-PWR-DC2 Power Supply

1 — !–FAULT	3 — 2–Source input 1
2 — OK–Power okay	4 — 1–Source input 0

Table 7 describes the LEDs on a JNP10K-PWR-DC2 power supply.