Zte ZXR10 8900 Series, Руководство по установке оборудования

Страница: 21 / 109

Chapter 3 Installation Preparation
The equipment room must comply with local fire resistance
standard.
Power Supply Requirements
Inspection
Power supply requirements inspection includes DC and AC power
supply requirements inspection.
DC Power Supply
Nominal voltage of power supply provided for ZXR10 8900 series
switch by equipment room is -48V and the allowed variation range
is -57V~ -40V.
Noise level indices of the DC voltage must meet general technical
specifications issued by the former MPT.
DC power supply must be installed with over-voltage/over-current
protection and indicators.
AC Power Supply
Single-phase power source: 150V~300V, 45Hz~60Hz, wave dis-
tortion <5%.
Voltage frequency requirements for standby electric generator are
the same as those listed above but its wave distortion range is
5%~10%.
Grounding Inspection
Grounding Inspection includes the following items:
� Ground wires in the equipment room should be arranged radial
or in plane mode. Ground wires should be wired separately.
Electric circuits formed by corrugated steel bars in the building
or via the racks are not allowed.
� In case of a joint grounding mode, resistance must be less than
1Ω. The sectional area of grounding cable depends on maxi-
mum bearable current. The grounding cable must be sheathed
copper cable instead of bare copper wire.
Auxiliary Equipment
Inspection
Auxiliary Equipment Inspection includes the following items:
� DDF and ODF frames related to current project must have been
installed. The capacity must be sufficient and all optical cables
must have been laid.
Confidential and Proprietary Information of ZTE CORPORATION 13