H3C SE-S5130 Series User manual

H3C SE-S5130 Switch Series
Installation Guide
New H3C Technologies Co., Ltd.
http://www.h3c.com
Document version: 6W100-20230821

Copyright © 2023, New H3C Technologies Co., Ltd. and its licensors
All rights reserved
No part of this manual may be reproduced or transmitted in any form or by any means without prior written
consent of New H3C Technologies Co., Ltd.
Trademarks
Except for the trademarks of New H3C Technologies Co., Ltd., any trademarks that may be mentioned in this
document are the property of their respective owners.
Notice
The information in this document is subject to change without notice. All contents in this document, including
statements, information, and recommendations, are believed to be accurate, but they are presented without
warranty of any kind, express or implied. H3C shall not be liable for technical or editorial errors or omissions
contained herein.
Environmental protection
This product has been designed to comply with the environmental protection requirements. The storage, use,
and disposal of this product must meet the applicable national laws and regulations.

Preface
H3C SE-S5130 Switch Series Installation Guide describes the installation, power-on, maintenance,
and troubleshooting of the S6520X-EI & S6520X-HI switches .
This preface includes the following topics about the documentation:
•
Audience.
•
Conventions.
•
Documentation feedback.
Audience
This documentation is intended for:
•
Network planners.
•
Field technical support and servicing engineers.
•
Network administrators working with the switches.
Conventions
The following information describes the conventions used in the documentation.
Command conventions
Convention
Description
Boldface Bold text represents commands and keywords that you enter literally as shown.
Italic Italic text represents arguments that you replace with actual values.
[ ] Square brackets enclose syntax choices (keywords or arguments) that are optional.
{ x | y | ... }
Braces enclose a set of required syntax choices separated by vertical bars, from which
you select one.
[ x | y | ... ]
Square brackets enclose a set of optional syntax choices separated by vertical bars,
from which you select one or none.
{ x | y | ... } *
Asterisk marked braces enclose a set of required syntax choices separated by vertical
bars, from which you select a minimum of one.
[ x | y | ... ] *
Asterisk marked square brackets enclose optional syntaxchoices separated byvertical
bars, from which you select one choice, multiple choices, or none.
&<1-n> The argument or keyword and argument combination before the ampersand (&) sign
can be entered 1 to n times.
# A line that starts with a pound (#) sign is comments.
GUI conventions
Convention
Description
Boldface Window names, button names, field names, and menu items are in Boldface. For
example, the New User window opens; click OK.
> Multi-level menus are separated by angle brackets. For example, File > Create >
Folder.

Symbols
Convention
Description
WARNING! An alert that calls attention to important information that if not understood or followed
can result in personal injury.
CAUTION:
An alert that calls attention to important information that if not understood or followed
can result in data loss, data corruption, or damage to hardware or software.
IMPORTANT:
An alert that calls attention to essential information.
NOTE:
An alert that contains additional or supplementary information.
TIP:
An alert that provides helpful information.
Network topology icons
Convention
Description
Represents a generic network device, such as a router, switch, or firewall.
Represents a routing-capable device, such as a router or Layer 3 switch.
Represents a generic switch, such as a Layer 2 or Layer 3 switch, or a router that
supports Layer 2 forwarding and other Layer 2 features.
Represents an access controller, a unified wired-WLAN module, or the access
controller engine on a unified wired-WLAN switch.
Represents an access point.
Represents a wireless terminator unit.
Represents a wireless terminator.
Represents a mesh access point.
Represents omnidirectional signals.
Represents directional signals.
Represents a security product, such as a firewall, UTM, multiservice security
gateway, or load balancing device.
Represents a security module, such as a firewall, load balancing, NetStream, SSL
VPN, IPS, or ACG module.
Examples provided in this document
Examples in this document might use devices that differ from your device in hardware model,
configuration, or software version. It is normal that the port numbers, sample output, screenshots,
and other information in the examples differ from what you have on your device.
T
T
T
T

Documentation feedback
You can e-mail your comments about product documentation to [e-mail].
We appreciate your comments.

i
Contents
1 Preparing for installation··········································································1-1
Safety recommendations ································································································································1-1
Examining the installation environment ··········································································································1-1
Cleanliness··············································································································································1-3
Corrosive gas limit···································································································································1-3
Examining the installation site·························································································································1-4
Checking power distribution or power supply environment·············································································1-5
Laser safety·····················································································································································1-6
Installation tools ··············································································································································1-6
Installation accessories···································································································································1-6
2 Installing the switch··················································································2-8
Installing the switch in a 19-inch rack··············································································································2-9
Installation methods································································································································2-9
Installation procedure at a glance···········································································································2-9
Rack-mounting the switch by using front mounting brackets································································2-10
Mounting the switch on a workbench············································································································2-11
Grounding the switch ····································································································································2-11
Grounding the switch with a grounding strip·························································································2-12
Grounding the switch with a grounding conductor buried in the earth ground······································2-13
Verifying the connection after grounding the switch··············································································2-14
Connecting the power cord···························································································································2-14
Connecting the AC power cord·············································································································2-14
Verifying the installation································································································································2-15
3 Accessing the switch for the first time····················································3-16
Managing the switch from the Web interface································································································3-16
Using the default account and password for login················································································3-16
Changing the default Web login password····························································································3-16
Creating Web login user accounts········································································································3-17
Managing the switch from the CLI·················································································································3-17
Connecting the switch to a configuration terminal·················································································3-17
Setting terminal parameters··················································································································3-20
Powering on the switch·························································································································3-20
4 Maintenance and troubleshooting··························································4-22
Power failure·················································································································································4-22
Symptom···············································································································································4-22
Solution·················································································································································4-22
Configuration terminal issues························································································································4-22
No display on the configuration terminal·······························································································4-22
Garbled display on the configuration terminal·······················································································4-23

1-1
1 Preparing for installation
This document provides an installation guide for the SE-S5130 switch series.
Table1-1 describes the switch models included in the switch series.
Table1-1 Switch series and models
Switch series Model Product code (PID)
SE-S5130 switch series SE-S5130-10S LS-SE-S5130-10S
SE-S5130-18S LS-SE-S5130-18S
Safety recommendations
To avoid equipment damage or bodily injury, read the following safety recommendations before
installation. Note that the recommendations do not cover every possible hazardous condition.
•
Before cleaning the switch, remove all power cords from the switch. Do not clean the switch
with wet cloth or liquid.
•
Do not place the switch near water or in a damp environment. Prevent water or moisture from
entering the switch chassis.
•
Do not place the switch on an unstable case or desk. The switch might be severely damaged in
case of a fall.
•
Ensure good ventilation at the installation site and keep the air inlet and outlet vents of the
switch free of obstruction.
•
Make sure the operating voltage is as required.
•
To avoid electrical shocks, do not open the chassis while the switch is operating or when the
switch is just powered off.
•
Always wear an ESD wrist strap when installing the switch. Make sure the strap makes good
skin contact and is reliably grounded.
Examining the installation environment
To ensure correct operation of your switch, make sure the installation environment meets the
requirements listed in Table1-2.
Table1-2 Checking list for the installation environment
Item Requirements
Ventilation and heat dissipation
CAUTION:
To ensure correct operation of your device, make sure the installation
environment is adequately ventilated to prevent the switch from
overheating.
•Ensure a minimum clearance of 10 cm (3.94 in) around the chassis.
•Do not install the device near a heat source, for example, a stove or
heater.
•Ensure air ventilation in the installation environment.
•Do not block the ventilation holes in the device or power adapter.

1-2
Item Requirements
Anti-moisture
CAUTION:
Water or moisture might damage the circuits of the device.
•Do not place the device near water or in a damp environment.
•Install the switch in a clean, dry, and ventilated place where
temperature is controlled in a stable range.
•Make sure
the installation environment is free from waterleakage or
condensation. If required, install a dehumidification device (such as
an air conditioner with a dehumidification function or a dedicated
dehumidifier).
•Do not operate the device under or near the water source, such as
the wash basin, laundry room, or areas with high humidity.
•Do not touch the device with wet hands.
Temperature/humidity
For correct operation and long service life of your switch, maintain the
temperature and humidity in the equipment room at acceptable ranges.
•Lasting high relative humidity can cause poor insulation, electricity
leakage, mechanical property change of materials, and metal
corrosion.
•Lasting low relative humidity can cause washer contraction and
ESD and cause issues including loose mounting screws and circuit
failure.
•High temperature can accelerate the aging of insulation materials
and significantly lower the reliability and lifespan of the switch.
For the temperature and humidity requirements of the switch, see
technical specifications in SE-S5130 Switch Series Hardware
Information and Specifications.
Lightning protection
CAUTION:
Ground the switch correctly and verify the grounding. For more
information, see "Grounding the switch."
•If you ground the switch by using a grounding strip, make sure the
grounding resistance of the grounding strip in the equipment roomis
less than 1Ω.
•If you ground the switch by using a grounding conductor buried in
the earth ground, make sure the grounding resistance of the
grounding conductor in the ground is less than 10Ω.
•Route the signal cables along indoor walls, bury the cables in the
earth ground, or thread the cables through steel tubes. Install a
signal lightning arrester with a nominal discharge current for a
corresponding network interface.
•Keep the signal cables far from power cords and lightning rod down
conductors.
•As a best practice, route power cords indoors. If anAC power cord
is routed from outdoors, connect theAC power cord first to a power
lightning arrester before leading it to theAC power port on the
switch. Make sure the power lightning arrester has a nominal
discharge current and the total length of the power cord from the
power lighting arrester to the power port on the switch is less than 5
m (16.40 ft).
•Ground the switch, rack, independent power supplies, and lightning
arresters separately.
•You must ground optical fibers with reinforcing metal stiffener from
outdoors on an optical distribution frame (ODF) or fiber splice
enclosure.
Cable routing CAUTION:
Do not run an Ethernet cable and power cord in parallel.

1-3
Item Requirements
•Route different types of cables separately.
•Keep power cords a minimum of 5 cm (1.97 in) away from other
cables.
ESD prevention
•Ground the switch correctly.
•To avoid ESD damageto the device or components, always wear an
ESD wrist strap when you install or remove the device or
components.
•Make sure the wrist strap has good skin contact and is reliably
grounded.
Cleanliness •For more information, see "Cleanliness."
Corrosive gas prevention The installation site must be free from corrosive gases such as acid gases and alkaline gases. For more information, see "Corrosive gas
limit."
EMI
•If AC power is used, use a single-phase three-wire power receptacle
with protection earth (PE) to filter interference from the power grid.
•Keep the device far away from radio transmitting stations, radar
stations, and high-frequency devices.
•Use electromagnetic shielding, for example, shielded interface
cables, when necessary.
Cleanliness
Dust buildup on the chassis might cause electrostatic adsorption and dust corrosion, resulting in
poor contact of metal connectors and contact points. This might shorten the device's lifetime and
even cause device failure in the worst case. Table1-3 describes the switch requirement for
cleanliness.
Table1-3 Switch requirement for cleanliness
Substance Particle diameter Concentration limit
Dust particles ≥ 0.5 µm ≤ 1.8 × 107particles/m3
To maintain cleanliness in the equipment room, follow these guidelines:
•
Keep the equipment room away from pollution sources. Do not smoke, eat, or drink in the
equipment room.
•
Use double-layer glass in windows and seal doors and windows with dust-proof rubber strips.
Use screen doors and window screens for doors and windows open to the outside and make
sure the external windows are air tight.
•
Use dustproof materials for floors, walls, and ceilings and use wallpaper or matt paint that does
not produce powders.
•
Clean the equipment room regularly and clean the air filters of the rack each month.
•
Wear ESD clothing and shoe covers before entering the equipment room, keep the ESD
clothing and shoe covers clean, and change them frequently.
Corrosive gas limit
Corrosive gases can accelerate corrosion and aging of metal components. Make sure the corrosive
gases do not exceed the concentration limits as shown in Table1-4.

1-4
Table1-4 Corrosive gas concentration limits
Gas Average concentration (mg/m3) Maximum concentration (mg/m3)
SO20.3 1.0
H2S 0.1 0.5
Cl20.1 0.3
HCI 0.1 0.5
HF 0.01 0.03
NH31.0 3.0
O30.05 0.1
NOX0.5 1.0
CAUTION:
As a best practice, control the
corrosive gas concentrations in the equipment room at their
average
values
. Make sure the corrosive gas concentrations do not exceed 30 minutes per day at their
maximum values.
To control corrosive gases, use the following guidelines:
•
As a best practice, do not build the equipment room in a place with a high concentration of
corrosive gases.
•
Make sure the equipment room is not connected to sewer, vertical shaft, or septic tank pipelines
and keep it far away from these pipelines. The air inlet of the equipment room must be away
from such pollution sources.
•
Use environmentally friendly materials to decorate the equipment room. Avoid using organic
materials that contains harmful gases, such as sulfur or chlorine-containing insulation cottons,
rubber mats, sound-proof cottons, and avoid using plasterboards with high sulfur concentration.
•
Place fuel (diesel or gasoline) engines separately. Do not place them in the same equipment
room with the device. Make sure the exhausted air of the engines will not flow into the
equipment room or towards the air inlet of the air conditioners.
•
Place batteries separately. Do not place them in the same room with the device.
•
Employ a professional company to monitor and control corrosive gases in the equipment room
regularly.
Examining the installation site
Before you install the switch, verify that the installation site meets the installation requirements. The
switch can operate correctly in an A1 or A2 installation site. Availability issues might occur if you
install the switch in an A3, B1, B2, or C installation site.
Table1-5 Installation sites
Category Definition Example
A1: indoor controlled
environment
•Indoor environments where
temperature and humidity are
controlled.
•Completely enclosed or shielded
indoor environments.
Central equipment rooms, IDC
equipment rooms, mobile cabins
with air conditioners, outdoor air
conditioner cabinets, and heat
exchanger cabinets.
A2: indoor partially
controlled
•Indoor environments where
temperature and humidity are partially
Simple equipment rooms, ordinary
houses, garages, corridors, and

1-5
Category Definition Example
environment
controlled.
•Incompletely enclosed or shielded
places.
•Places far from pollution sources.
direct ventilation cabinets far from
pollution sources, houses without
direct exposure to sunlight or rain,
railway station platforms, and
stadiums.
A3: indoor
uncontrolled
environment
•Indoor environments where
temperature and humidity are
uncontrolled.
•Incompletely enclosed or shielded
places.
•Places near pollution sources.
Simple equipment rooms, ordinary
houses, garages, corridors, and
direct ventilation cabinets near
pollution sources, houses without
direct exposure to sunlight or rain,
railway station platforms, stadiums,
uncleaned rooms after decoration,
and rooms under decoration.
B1: outdoor general
environment
•Unshielded places where the
temperature and humidity are not
controlled.
•Places far from pollution sources.
Completely exposed outdoor places
far from pollution sources.
B2: harsh
environment
•Unshielded places where the
temperature and humidity are not
controlled.
•Sea environments or outdoor land
environments near pollution sources.
Islands, ships, and completely
exposed outdoor places near
pollution sources.
C: special
environments Special application environments Buried, underwater, or undersea environments and manholes.
Table1-6 Pollution sources
Category Radius range
Saline water areas such as oceans and saline lakes ≤3.7 km (2.30 miles)
Serious pollution sources suchas metallurgic plants,coal mines, and
heat and power plants ≤3 km (1.86 miles)
Medium pollution sources
such as chemical factories, rubber plants,
and electroplating factories ≤2 km (1.24 miles)
Light pollution sources, such as food factories, tanneries, and
heating boilers ≤1 km (0.62 miles)
Checking power distribution or power supply
environment
Table1-7 Requirements for power distribution or power supply environment
Item Requirements
Preparation The power supply must be available before you install the switch.
Voltage The voltage provided to the switch must be within the operating voltage range.
For the operating voltage range, see SE-S5130 Switch Series Hardware
Information and Specifications.
Power receptacle and
cables
•If the external power supply system provides an AC power outlet, use a
country-specificAC power cord. Make sure the PE wire of the AC power
supply is grounded reliably.

1-6
Item Requirements
•Do not use the power cord provided with the switch on other devices.
Laser safety
WARNING!
Disconnected optical fibers or
transceiver modules might emit invisible laser light. Do not stare into
beams or view directly with optical instruments when the switch is operating.
The switch is a Class 1 laser device.
Installation tools
No installation tools are provided with the switch. Prepare the following tools yourself as required:
•
ESD wrist strap
•
Flat-head screwdriver
•
Phillips screwdriver
•
Needle-nose pliers
•
Marker
Installation accessories
Before installation, make sure you have all the required installation accessories. If any accessory is
damaged or missing, use the product code provided in this table to purchase a new one.
Table1-8 Installation accessories
Product code Description Quantity Applicable device
models
0223A056
Front mounting bracket kit
(including two front mounting
brackets and four M4 screws)
1 kit (provided) SE-S5130-18S
0223A05H
Front mounting bracket kit
(including two front mounting
brackets and four M4 screws)
1 kit (provided) SE-S5130-10S
N/A M6 screw and cage nut User supplied All switch models

1-7
Product code Description Quantity Applicable device
models
N/A
Grounding cable
1 (provided) All switch models
N/A Grounding screw 1 (provided) All switch models
N/A
AC power cord
The appearance and
parameters for AC power
cords vary by countries and
regions. The power cord in
this table is a standard power
cord in China.
1 (provided) All switch models
04042967
DB9-to-RJ45 console cable
1 (optional) All switch models
0404A1EE
USB-to-RJ45 console cable
1 (optional) All switch models

2-8
2 Installing the switch
CAUTION:
Keep the tamper
-
proof seal on a mounting screw on the chassis cover intact, and if you want to open
the chassis, contact H3C for permission. Otherwise, H3C shall not be liable for any consequence.
Figure2-1 Hardware installation flow
Start
Install the switch
Ground the switch
Connect the power cords
Verify the installation
Turn on the circuit breaker
Operating correctly? Turn off the
circuit breaker
Troubleshoot
the switch
No
Yes
End
Install interface connectors
and cables

2-9
Installing the switch in a 19-inch rack
Installation methods
Table2-2 Installation methods
Switch models Mounting bracket type Installation procedure
SE-S5130-18S Mounting bracket A (provided), as shown by
callout (A) in Figure2-2 See "Rack-mounting the
switch by using front
mounting brackets."
SE-S5130-10S Mounting bracket B (provided), as shown by
callout (B) in Figure2-2
Figure2-2 Front mounting brackets
(1) Screw hole for attaching the mounting bracket to the switch
(2) Screw hole for attaching the mounting bracket to the rack
Installation procedure at a glance
Figure2-3 Procedure for installing the switch in a 19-inch rack by using front mounting
brackets
NOTE:
If a rack shelf is available, you can put the switch on the rack shelf, slide the switch to an appropriate
location, and then attach the switch to the rack by using the mounting brackets.
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
Select an installation position for
the front mounting brackets
(near the port side)
Attach the front mounting
brackets to the switch Mount the switch in the rack

2-10
Rack-mounting the switch by using front mounting brackets
Attaching the front mounting brackets to the switch
1. Place the narrow flange of the front mounting bracket against the chassis side panel. Align the
mounting bracket installation holes with the screw holes in the chassis.
2. Fasten the M4 screws to secure the mounting bracket to the switch. As a best practice, use a
torque of 12 kgf-cm (1.18 Nm) to fasten the M4 screws.
To attach mounting bracket A to the switch, see Figure2-4.
To attach mounting bracket B to the switch, see Figure2-5.
Figure2-4 Attaching mounting bracket A to the switch
Figure2-5 Attaching mounting bracket B to the switch
3. Attach the front mounting bracket to the other side of the chassis in the same way.
Mounting the switch in the rack
1. Wear an ESD wrist strap and make sure it makes good skin contact and is reliably grounded.
2. Verify that the front mounting brackets have been securely attached to the switch chassis. See
"Attaching the front mounting brackets to the switch."
3. Attach cage nuts to the front rack posts.
4. One person supports the bottom of the switch, and moves the switch to an appropriate position
based on the installation positions of the front mounting brackets.
5. Another person uses user supplied M6 screws and cage nuts to attach the mounting brackets
to the rack and verifies that the brackets are level and secure. As a best practice, use a torque
of 30 kgf-cm (2.94 Nm) to fasten the M6 screws.

2-11
Figure2-6 Mounting the switch in the rack by using mounting brackets A
Figure2-7 Mounting the switch in the rack by using mounting brackets B
Mounting the switch on a workbench
IMPORTANT:
•
Ensure 10 cm (3.9 in) of clearance around the chassis for heat dissipation.
•Do not place heavy objects on the switch.
If a standard 19-inch rack is not available, you can place your switch with upside up on a workbench.
Grounding the switch
WARNING
!
Correctly
connecting the switch grounding cable is crucial to lightning protection, ESD, and EMI
protection.
For information about lightning protection, see H3C Network Devices Lightning
Protection Guide.

2-12
To protect against the following types of problems, use a grounding cable to connect the device to
the earthing facility at the installation site:
•
Bodily injury from electric shocks.
•
Device and power and data line damages.
•
Electrical fires, lightning strokes, electromagnetic coupling interferences, ESD damages.
You can ground the switch in one of the following ways, depending on the grounding conditions
available at the installation site:
•
Grounding the switch with a grounding strip
•
Grounding the switch with a grounding conductor buried in the earth ground
NOTE:
The
chassis views and power supply and grounding terminal positions in the following figures
are for
illustration only.
Grounding the switch with a grounding strip
WARNING
!
Connect the grounding cable to the grounding system in the equipment room. Do not connect it to a
fire main or lightning rod.
If a grounding strip is available at the installation site, use the grounding strip to ground the switch.
To ground the switch by using a grounding strip:
1. Attach the ring terminal end of the grounding cable to the grounding hole in the switch.
a. Remove the grounding screw from the grounding hole in the rear panel of the switch.
b. Attach the grounding screw to the ring terminal of the grounding cable.
c. Use a screwdriver to fasten the grounding screw into the grounding screw hole.
Figure2-8 Attaching the grounding cable to the grounding hole of the switch
(1) Grounding screw
(2) Ring terminal
(3) Grounding sign
(4) Grounding hole
(5) Grounding cable
2. Connect the other end of the grounding cable to the grounding strip.
a. Cut the grounding cable to a length according to the distance between the switch and the
grounding strip.
b. Peel 20 mm (0.79 in) of insulation sheath by using a wire stripper.

2-13
c. Use the needle-nose pliers to bend the bare wire.
d. Hook the grounding cable to the post on the grounding strip, and use the hex nut to secure
the cable to the post.
Figure2-9 Connecting the grounding cable to a grounding strip
(1) Grounding post
(2) Grounding strip
(3) Grounding cable
(4) Hex nut
Grounding the switch with a grounding conductor buried in
the earth ground
If the installation site does not have grounding strips, but earth ground is available, hammer a 2.5 m
(8.20 ft) or longer angle iron or steel tube into the earth ground to act as a grounding conductor. Make
sure a minimum of 0.7 m (2.30 ft) is left between the top of the grounding conductor and the ground.
In cold areas, bury the grounding conductor below the frozen soil layer. In areas with thin soil or rocky
gravel, determine the depth for burying the grounding conductor based on the actual condition.
If zinc-coated steel is used, the following dimensions requirements must be met:
•
Angle iron—A minimum of 50 × 50 × 5 mm (1.97 × 1.97 × 0.20 in).
•
Steel tube—A minimum of 3.5 mm (0.14 in) in thickness.
•
Flat steel—Aminimum of 40 × 4 mm (1.57 × 0.16 in).
•
Round steel—Aminimum of 10 mm (0.39 in).
Weld the yellow-green grounding cable to the angel iron or steel tube and treat the joint for corrosion
protection.
Figure2-10 Grounding the switch by burying the grounding conductor into the earth ground
(1) Grounding screw
(2) Grounding cable
(3) Earth

2-14
(1) Grounding screw
(2) Grounding cable
(3) Earth
(4) Joint
(5) Grounding conductor
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 0.1Ω.
b. Use a grounding resistance tester to measure the grounding resistance of the grounding
strip, and make sure the grounding resistance is less than 1Ω.
•
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 0.1Ω.
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 10Ω. 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
WARNING
!
•
Provide a circuit breaker for each power cord.
•Before connecting the power cord, make sure the circuit breaker for the power cord is turned off.
Connecting the AC power cord
1. Wear an ESD wrist strap and make sure it makes good skin contact and is reliably grounded.
2. Connect the female connector of the AC power cord to the AC-input power receptacle on the
switch. See Figure2-11.
3. Use a cable tie to secure the power cord to the handle near the AC-input power receptacle. See
Figure2-12.
4. Connect the other end of the power cord to an AC power source.