Installation Manual
7. Appendix
C-17
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C2
Requirements for Power Supply
C2.1
AC Power Supply Requirement
The low-voltage power supply system should adopt the three-phase five-
wire or single-phase three-wire system. The voltage of the low-voltage
power supply system is 110V/220V and the frequency is 50Hz/60Hz.
It is required to adopt the un-interruptible power, such as UPS
(Uninterrupted Power Supply), as the AC backup power supply. The AC
backup power and AC power should keep the same phase and the
switching time with the AC should be smaller than 10 ms. Otherwise, the
router may restart or reset.
The AC capacity of the equipment room should consider the work current
and faulty current of the router. Ensure that the independent router has
the independent AC power distribution protection device. The
configuration protection switch should be 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:
