2-16
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 with 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
.
Connecting the power cord
CAUTION:
•
Provide a circuit breaker for each power cord.
•
Before connecting the power cord, make sure the circuit breaker on the power cord is turned off.
Table2-4 Power cord connection procedures at a glance
Switch model
Available power source
Connection procedure reference
S1850-52X-PWR
AC power source
Connecting the AC power cord for the fixed
AC power supply
RPS1600-A
Connecting the DC power cord for the fixed
DC power supply
S1850-28X
S1850-52X
S1850-28X-PWR
S1850V2-28X
S1850V2-52X
S1850V2-28X-HPWR
S1850V2-52X-PWR
S1850V2-52P-EI
S1850V2-28P-EI
S1850V2-28P-HPWR-EI
S1850V2-9P-EI
S1850V2-10P-EI
S1850V2-10P-PWR-EI
S1850V2-10P-HPWR-EI
AC power source
Connecting the AC power cord for the fixed
AC power supply
