H3C S5170-EI Series, Manual

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2-12
Verifying the connection after grounding the switch
•
If you ground the switch by using a grounding strip, perform the following tasks:
a. Use a multimeter to measure the resistance between the switch grounding terminal and
grounding point, and make sure the resistance is less than 0.1
Ω.
b. Use a grounding resistance tester to measure the grounding resistance of the grounding
strip, and make sure the grounding resistance is less than 1
Ω.
•
If you ground the switch by using a grounding conductor buried in the earth ground, perform the
following tasks:
a. Use a multimeter to measure the resistance between the switch grounding terminal and
grounding point, and make sure the resistance is less than 0.1
Ω.
b. Use a grounding resistance tester to measure the grounding resistance of the angle iron in
the ground, and make sure the grounding resistance is less than 10
Ω
. For locations with
high soil resistivity, sprinkle some resistance reducer to reduce soil resistivity or replace soil
around the grounding strip with soil with lower resistance.
For information about resistance measurement, see H3C Network Devices Lightning Protection
Guide .
Installing and removing a power supply
The S5570S-EI switch series provides two power supply slots. You can install one or two power
supplies for the switch as required. For the power supplies available for the switch and their
specifications, see
S5170-EI & S5570S-EI Switch Series Hardware Information and Specifications .
The S5570S-28S-EI (LS-5570S-28S-EI), S5570S-54S-EI (LS-5570S-54S-EI), S5570S-36F-EI-GL
(LS-5570S-36F-EI), and S5570S-54F-EI (LS-5570S-54F-EI) switches are shipped with power
supply slot PWR1 empty and power supply slot PWR2 installed with a filler panel.
The S5570S-28S-EI (LS-5570S-28S-EI-GL), S5570S-54S-EI (LS-5570S-54S-EI-GL),
S5570S-36F-EI-GL (LS-5570S-36F-EI-GL), and S5570S-54F-EI (LS-5570S-54F-EI-GL) switches
support shipment with power supplies installed. If you hope that the switch is shipped with the
purchased power supplies installed, contact the H3C sales personnel.
WARNING!
•
To avoid bodily injury or switch damage, strictly follow the procedures in Figure2-16 and
Figure2-17 to install and remove a power supply.
•
You must provide a circuit breaker for each power supply.
Figure2-16 Installation procedure
Figure2-17 Removal procedure
CAUTION:
•
To prevent damage to the power supply and the connectors on the backplane, insert the power
supply gently. If you encounter a hard resistance when inserting the power supply, pull out the
安装电源模块 连接电源线 给电源模块加电 安装电源模块 连接电源线 给电源模块加电 安装电源模块 连接电源线 给电源模块加电
Install the power supply Connect the power cord
Turn on the circuit
breaker
将电源模块断电 拆卸电源线 拆卸电源模块 将电源模块断电 拆卸电源线 拆卸电源模块 将电源模块断电 拆卸电源线 拆卸电源模块
Turn off the circuit
breaker
Remove the power cord
Remove the power
supply