Juniper QFX3500 - Chapter 6 Power Specifications and Requirements

CHAPTER 4
Power Supplies
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AC Power Supply for a QFX3500, QFX3600, or QFX3600-I Device on page 35
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DC Power Supply for a QFX3500, QFX3600, or QFX3600-I Device on page 37
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AC Power Supply LEDs on a QFX3500, QFX3600, or QFX3600-I Device on page 39
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DC Power Supply LEDs on a QFX3500, QFX3600, or QFX3600-I Device on page 40
AC Power Supply for a QFX3500, QFX3600, or QFX3600-I Device
The power supplies in QFX3500, QFX3600, and QFX3600-I devices (see
Figure 19 on page 35) are hot-removable and hot-insertable field-replaceable units
(FRUs) that you can install on the front panel without powering off the device or disrupting
the switching function.
The AC power supply in QFX3500, QFX3600, and QFX3600-I devices is 650 W.
Figure 19: AC Power Supply in QFX3500, QFX3600, or QFX3600-I Devices
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Handle
Ejector
lever
AC appliance
inlet
Cord retainer
Thepowersupply provides FRU-to-portor port-to-FRU airflowdepending onthe 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 either have labels on the handles
that indicate the direction of the airflow or they have color-coded handles with a fan
icon. See Figure 21 on page 36 for an example of the power supply with the fan icon. 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.
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