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The marked input voltage of –48 VDC for a DC-powered device is the nominal voltage
associated with the battery circuit, and any higher voltages are only to be associated
with float voltages for the charging function.
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Because the device is a positive ground system, you must connect the positive lead to
the terminal labeled
RTN
, the negative lead to the terminal labeled –48 VDC, and the
earth ground to the device grounding points.
Related
Documentation
General Safety Guidelines and Warnings on page 317
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General Electrical Safety Guidelines and Warnings on page 349
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DC Power Disconnection Warning on page 359
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DC Power Grounding Requirements and Warning on page 360
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DC Power Wiring Sequence Warning on page 361
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DC Power Wiring Terminations Warning on page 363
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Connecting DC Power to an EX2200 Switch
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Connecting DC Power to an EX3200 Switch
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Connecting DC Power to an EX3400 Switch
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Connecting DC Power to an EX4200 Switch
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Connecting DC Power to an EX4300 Switch
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Connecting DC Power to an EX4500 Switch
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Connecting DC Power to an EX4550 Switch
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Connecting DC Power to an EX4600 Switch
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Connecting DC Power to an EX6200 Switch
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Connecting DC Power to an EX8200 Switch
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Connecting DC Power to an EX9204 Switch
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Connecting DC Power to an EX9208 Switch on page 183
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Connecting DC Power to an EX9214 Switch
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Connecting DC Power to an OCX1100 Switch
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Connecting DC Power to an XRE200 External Routing Engine
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Connecting DC Power to a QFX3500, QFX3600, or QFX3600-I Device
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Connecting DC Power to a QFX5100 Device
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Connecting DC Power to a QFX10002
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Connecting DC Power to a QFX10000
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Connecting DC Power to a QFX5200
Copyright © 2017, Juniper Networks, Inc.
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EX9208 Switch Hardware Guide
Summary of Contents for EX9208
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