Juniper MX10016, Hardware Manual

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Each power supply has its own fan and is cooled by its own internal cooling system. Hot air exhausts from
the rear of the chassis.
JNP10K-PWR-AC2 Power Supply
The JNP10K-PWR-AC2 power supply is a high-capacity, high-line model that is designed to support either
AC or DC systems in either a low power or high power mode. The power supply takes AC input and
provides DC output of 12.3 VDC, 5000 W with a single feed and 5500 W with a dual feed. For AC systems,
the operating input voltage is 180 to 305 VAC and for DC systems, the operating input voltage is 190 to
410 VDC.
The number of power feeds and whether the power supplies provides high or low output power is configured
using a set of dip switches on the faceplate of the power supply. If any power supply in the chassis is set
to low power, all power supplies are also set to low power, regardless of their dip switch settings. This
design is to prevent overloading of the power supply that is set to low power. See Table 14 on page 62
The JNP10K-PWR-AC2 fits into the standard power supply bay but when compared to most other models,
the JNP10K-PWR-AC2 is longer and protrudes from the bay when fully inserted into the chassis. See
Figure 25 on page 61 for the settings for the dip switches.
Figure 25: Comparision of the JNP10K-PWR-AC2 to the JNP10K-PWR-AC Power Supply
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WARNING: Extreme burn danger–Do not handle an HVAC or HVDC power supply
running in the chassis without heat protective gloves, such as welder’s gloves. The
JNP10K-PWR-AC2 can reach temperatures of 158°F (70°C) under running conditions.
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