Appendix
MP3900X Series Router Installation Manual
C-18
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larger than the protection switch of the post powered device.
The power input range of the router using the AC power is as shown in the following
table.
Appendix Table C-5 AC power supply requirement
Item
Index
Input voltage range
100
–240V
Input frequency range
50
–60Hz
⚫
AC wire should adopt the flame-retardant wire. The wire layout should be done
according to
Code for fire protection design of tall buildings GB50045-95
. The
low-voltage distribution is done according to
Specifications for the design of
low-voltage electric power distribution systems GB50045-95
.
C2.2 Suggestions on fundamental AC power supply
Suggestions on fundamental AC power supply include:
⚫
If the router is directly powered by mains supply, and its power supply voltage
exceeds -10%~5% of the rated voltage, or the voltage range allowed for the router,
a voltage regulation device shall be used to meet the requirements.
⚫
In case the communication load requires uninterruptible or transient-free AC, the
UPS or inverter power supply system shall be used.
⚫
In the case of abnormity of the mains supply, the telecommunication bureau
(station) shall equip self-provided electric generator set as self-contained power
supply, to guarantee important communication load and important power load. The
capacity thereof shall be checked to be not less than 1.5-2 times the total capacity
of the AC incessant consumers.
