Huawei NetEngine80E Installation Manual page 17

HUAWEI NetEngine80E Router
Installation Guide
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2.2.3 Checking the Power Supply Condition of the Equipment
Room
Check the power supply condition of the equipment room according to its power supply
requirements. The aspects to be checked include the AC power supply, DC power supply, and
battery.
Check the power supply condition of the equipment room with regard to the following aspects:
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2.2.4 Checking the Grounding
Good grounding is the basis of stable running of the device. It is also the prerequisite for
protecting the device from lightning strike and interference. Be sure to check the grounding
condition of the installation site carefully, and implement good grounding based on the actual
situations.
Checking the Grounding of the Equipment Room
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Checking the Grounding of the Communication Power Device in the Equipment
Room
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Issue 02 (2011-09-10)
The design of the water supply and drainage systems must meet the requirements of
common water consumption, and must comply with the fire control regulations.
The air-conditioning system must meet the temperature and humidity requirements for
proper device running.
The fire control facilities in the equipment room must be intact and should function
normally.
The earthquake-resistance level of the equipment room must meet relative requirements.
The floor of the equipment room must be solid, so that the cabinets can be installed firmly.
The facilities of the AC power supply should be complete. The AC power supply should
meet the power supply requirements. Besides the AC power lead-in wires, the diesel
generator that supplies standby power should be available.
The DC power distribution device must meet the requirements and the voltage must be
stable. The power output should be within the specified range.
Batteries with sufficient capacity must be available. Note that the batteries ensure
uninterrupted running of the device when power supply faults occur.
The equipment room must be equipped with lightning-proof devices, such as the lightning
arrester.
The lightning protection grounding device (such as the lightning arrester) should share one
set of grounding body with the protection grounding of the equipment room.
The grounding resistance of the equipment room or the communication office (site) must
not exceed 10 ohms, and must comply with the corresponding national and industry
standards.
The working ground and protection ground of the communication power device must share
one set of grounding body with the protection ground of the communication device. When
the communication power device and the communication device are installed in the same
equipment room, the two devices must be connected to the same protection grounding bar.
The -48 VDC output positive terminal (+24 VDC output negative terminal) of the
communication power device must be connected to the nearest grounding terminal.
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2 Preparing for the Installation
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