ADC Telecommunications Inc. FWM1901A 用户手册
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COMPANY CONFIDENTIAL
CENG0133_C_Customer_Safety_and
_Regulatory_Information.doc
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The AC variant has three independent inlets for the purposes of power
source migration and redundancy, at least two of these require power for
operation, all three require power for normal redundant operation.
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-38 to -75V (-48V nominal) DC via two sets of screw terminals. 500W 10A
rating. The installer must ensure that each DC supply connection is fused
externally at 5A and provision is made for an external disconnection
device. Plastic covers (supplied) are to be fitted over -48V BSC
connections.
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The DC variant has two inlets for the purposes of power source migration,
these are internally diode combined, the external -48V supplies must
therefore share a common reference.
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Appliance must be earthed, either via the mains connectors (AC mains
operation) or screw terminal on the rear panel (DC operation). Earth cable
to be minimum 0.75mm^2 section.
BSC – Environmental Specification
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0 to +45 degrees C ambient operating
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-20 to +80 degrees C ambient storage
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10 to 90% RH non condensing
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-100m to +3050m altitude
6.2 BSC – Handbook - FCC Text
WARNING
This is a class A product. In a domestic environment this product may cause
radio interference in which case the user may be required to take adequate
measures.