S12800 Routing Switch Installa
tion Manual V1.0
Maipu Confidential & Proprietary Information
Page 124
D. 1 . 8
G r o u n d i n g Re q u i r e m e n t
The well grounding system is the basis for the switch to run stably and reliably, and the
important guarantee for anti-lightning, anti-jamming, and anti-static of the switch. The user
should provide the well grounding system for the switch. The resistance between the switch
chassis and the ground should be smaller than 1ohm.
D.2
Requirements for Power Supply
D. 2 . 1
AC P o w e r S u p p l y Re q u i r e m e n t
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, as the AC backup power
supply. The AC backup power and AC should keep the same phase and the switching time
with the AC should be smaller than 10ms. Otherwise, the device may restart or reset.
The AC capacity of the equipment room should consider the work current and faulty
current of the device. Ensure that the independent device has the independent AC power
distribution protection device. The configuration protection switch should be larger than
the protection switch of the post powered device.
Use the AC device and its power input allowed range is described in appendix table D-5.
Appendix table D-5 AC basic power required table
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.
D. 2 . 2
AC P o w e r S u p p l y S u g g e s t i o n s
Suggestions for AC power supply:
