Windbit ESW3L2P Series Installation and operating manual

Windbit Hardware Installation and Reference Guide
ESW3L2P Series Switches 1
ESW3L2P Series Switches
Hardware installation and reference guide
Copyright © Windbit Dm3000-I Version 1.1 2023

Windbit Hardware Installation and Reference Guide
ESW3L2P Series Switches 2
Legal Notice
Warranty
This publication is subject to change.
Teldat S.A. offers no warranty whatsoever for information contained in this manual.
Teldat S.A. is not liable for any direct, indirect, collateral, consequential or any other damage connected to the delivery,
supply or use of this manual.

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ESW3L2P Series Switches 3
1 Product Overview
Windbit ESW3L2P series switches are the new-generation GE switches released by Windbit for campus access. Boasting
a new hardware architecture and ESW2L3P_OS11.X modular operating system, these switches offer enhanced resource
entries, accelerated hardware processing, and an improved user experience.
Windbit ESW3L2P Series Switches
Model
10/100/1000Base-
T Adaptive
Ethernet Port
1000Base-
X/2.5GBaseX
SFP Port
Console
Port
USB
Port
Redundant
Power
Supply
ESW3L2P-24GE4MS-E
24
4
1
1
Fixed
single
power
supply
ESW3L2P-48GE4MS-E
48
4
1
1
Fixed
single
power
supply
ESW3L2P-24GE4MS-P
24
(supporting
PoE/PoE+)
4
1
1
Fixed
single
power
supply
1000Base-T ports are downward compatible with 100Base-TX and 10Base-T ports.
The SFP ports support 2500Base-X, 1000Base-X, and 100Base-FX.
1.1 ESW3L2P-24GE4MS-E
Technical Specifications
Model
ESW3L2P-24GE4MS-E
CPU
Built-in CPU, single-core processor, with a clock speed of 1.2 GHz
BOOT ROM
N/A
Flash Memory
64 MB
SDRAM
DDR4 512 MB
Supported Modules
Module types are subject to updates without prior notification. For detailed
information, please contact Windbit.
SFP Port
2500Base-X Capable
1000Base-X Capable
100Base-FX Capable
Power Supply
AC input:
Rated voltage range: 100 V AC to 240 V AC
Maximum voltage range: 90 V AC to 264 V AC

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ESW3L2P Series Switches 4
Frequency: 50 Hz/60 Hz
Rated current: 0.6 A
Ground Leakage Current
≤ 3.5 mA
EEE Function
Support
PoE Function
Not Support
Power Consumption
≤ 15.6 W
Operating Temperature
0°C to 45°C (32°F to 113°F) at an altitude of 0-1800 m (1.12 miles)
Between altitudes of 1800 m and 5000 m (1.12 miles to 3.11 miles), the
maximum operating temperature decreases by 1°C (1.8°F) every time the
altitude increases by 220 m (721.78 ft.).
Storage Temperature
-40ºC to 70ºC (-40°F to 158°F)
Operating Humidity
10% to 90% RH
Storage Humidity
5% to 95% RH
Operating Height
0 to 5000 m (3.11 miles) above sea level
Fan
Fanless design
Temperature Alarming
Support
EMC Certification
DIRECTIVE 2014/30/EU (EMC)
Safety Regulation Compliance
DIRECTIVE 2014/35/EU (LVD)
Dimensions (W × D × H)
440 mm × 220 mm × 43.6 mm (17.32 in. × 8.66 in. × 1.72 in.), 1RU
Weight
About 2.5 KG (5.51 lbs.)
The ESW3L2P-24GE4MS-E switch is a Class A product and may cause radio interference in the living environment;
proper measures are advised.
Product Appearance
On the front panel, the ESW3L2P-24GE4MS-E Ethernet switch is equipped with one RJ45 console port, one USB port, 24
RJ45 10/100/1000Base-T adaptive Ethernet ports, and four SFP ports.
Figure 1-1 Appearance of ESW3L2P-24GE4MS-E Switch
Front Panel

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ESW3L2P Series Switches 5
Figure 1-2 Front Panel of ESW3L2P-24GE4MS-E Switch
Description:
1. System status LED
2. USB port
3. Console port
4. 10/100/1000Base-T adaptive Ethernet port
5. SFP port status LED
6. SFP port
Back Panel
Figure 1-3 Back Panel of ESW3L2P-24GE4MS-E Switch
Description:
1. Grounding stud
2. Power cord retention clip hole
3. Power plug

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ESW3L2P Series Switches 6
Power Supply
The ESW3L2P-24GE4MS-E switch employs an AC power supply.
⚫AC input:
Rated voltage range: 100 V AC to 240 V AC; 50 Hz/60 Hz
Maximum voltage range: 90 V AC to 264 V AC; 47 Hz to 63 Hz
Frequency: 50 Hz/60 Hz
Rated current: 0.6 A
Power cord requirements: 10 A power cord
Heat Dissipation
The ESW3L2P-24GE4MS-E switch utilizes natural heat dissipation without fans. Maintain a minimum clearance of 10 cm
(3.94 in.) on both sides and around the back panel for air circulation. Dust the device every three monthsto prevent blocking
ventilation openings on the housing.
Figure 1-4 Airflow Direction of the ESW3L2P-24GE4MS-E Switch
Ensure the switch is installed with a minimum clearance of 1 U (44.45 mm/1.75 in.) from neighboring devices to
facilitate proper heat dissipation.
LED
LED
Panel Identification
Status
Description
System status
LED
Status
Blinking
green
The system is being initialized.
Solid green
The system is operating normally.
Solid yellow
An over-temperature alarm has been
triggered.
Solid red
1. Temperature severely surpasses the
threshold, prompting a system reset and
restart.
2. System failure.

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ESW3L2P Series Switches 7
10/100/1000 Mbps
copper port status
LED
1-24
Off
No link detected for this port.
Solid green
10/100/1000 Mbps link established.
Blinking
Port is actively receiving or transmitting
data.
SFP port status
LED
25F-28F
Off
No link detected for this port.
Solid green
Link established.
Blinking
Port is actively receiving or transmitting
data.
Solid yellow
Optical attenuation surpasses specified
communication quality requirements.
Solid red
Optical module failure or optical link failure
despite module positioning.
1.2 ESW3L2P-48GE4MS-E
Technical Specifications
Model
ESW3L2P-48GE4MS-E
CPU
Built-in CPU, single-core processor, with a clock speed of 1.2 GHz
BOOT ROM
N/A
Flash Memory
64 MB
SDRAM
DDR4 512 MB
Supported Modules
Module types are subject to updates without prior notification. For detailed
information, please contact Windbit.
SFP Port
2500Base-X Capable
1000Base-X Capable
100Base-FX Capable
Power Supply
AC input:
Rated voltage range: 100 V AC to 240 V AC
Maximum voltage range: 90 V AC to 264 V AC
Frequency: 50 Hz/60 Hz
Rated current: 1.5 A
Ground Leakage Current
≤ 3.5 mA
EEE Function
Support
PoE Function
Not Support
Power Consumption
≤ 30 W
Operating Temperature
0°C to 45°C (32°F to 113°F) at an altitude of 0-1800 m (1.12 miles)
Between altitudes of 1800 m and 5000 m (1.12 miles to 3.11 miles), the
maximum operating temperature decreases by 1°C (1.8°F) every time the
altitude increases by 220 m (721.78 ft.).
Storage Temperature
-40ºC to 70ºC (-40°F to 158°F)
Operating Humidity
10% to 90% RH

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ESW3L2P Series Switches 8
Storage Humidity
5% to 95% RH
Operating Height
0 to 5000 m (3.11 miles) above sea level
Fan
Support fan speed control and fan fault alarm
Temperature Alarming
Support
EMC Certification
DIRECTIVE 2014/30/EU (EMC)
Safety Regulation Compliance
DIRECTIVE 2014/35/EU (LVD)
Dimensions (W × D × H)
440 mm × 220 mm × 43.6 mm (17.32 in. × 8.66 in. × 1.72 in.), 1RU
Weight
About 2.8 KG (6.17 lbs.)
The ESW3L2P-48GE4MS-E switch is a Class A product and may cause radio interference in the living environment;
proper measures are advised.
Product Appearance
The ESW3L2P-48GE4MS-E Ethernet switch is equipped with one RJ45 console port, one USB port, 48 RJ45
10/100/1000Base-T adaptive Ethernet ports, and four SFP ports.
Figure 1-5 Appearance of ESW3L2P-48GE4MS-E Switch
Front Panel
Figure 1-6 Front Panel of ESW3L2P-48GE4MS-E Switch
Description:
1. System status LED
2. USB port
3. Console port
4. 10/100/1000Base-T adaptive Ethernet port
5. SFP port
Back Panel
Figure 1-7 Back Panel of ESW3L2P-48GE4MS-E Switch

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ESW3L2P Series Switches 9
Description:
1. Grounding stud
2. Power cord retention clip hole
3. Power plug
Power Supply
The ESW3L2P-48GE4MS-E switch employs an AC power supply.
⚫AC input:
Rated voltage range: 100 V AC to 240 V AC; 50 Hz/60 Hz
Maximum voltage range: 90 V AC to 264 V AC; 47 Hz to 63 Hz
Frequency: 50 Hz/60 Hz
Rated current: 1.5 A
Power cord requirements: 10 A power cord
Heat Dissipation
The ESW3L2P-48GE4MS-E switch employs left-to-right airflow to effectively dissipate heat, ensuring optimal performance
in the designated environment. To facilitate proper air circulation, maintain a minimum clearance of 10 cm (3.94 in.) on
both sides and around the back panel of the chassis. Regularly dust the device every three months to prevent obstruction
of ventilation openings on the housing.
Figure 1-8 Airflow Direction of ESW3L2P-48GE4MS-E Switch
LED
LED
Panel Identification
Status
Description

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ESW3L2P Series Switches 10
System status
LED
Status
Blinking
green
The system is in the initialization phase.
Solid green
The system is operating normally.
Solid yellow
An over-temperature alarm has been
triggered.
Solid red
1. Temperature severely surpasses the
threshold, prompting a system reset and
restart.
2. A system failure has occurred.
10/100/1000 Mbps
copper port status
LED
1-48
Off
No link detected for this port.
Solid green
10/100/1000 Mbps link established.
Blinking
Port is actively receiving or transmitting
data.
SFP port status
LED
49F-52F
Off
No link detected for this port.
Solid green
Link established.
Blinking
Port is actively receiving or transmitting
data.
Solid yellow
Optical attenuation value exceeds
specified communication quality
requirements.
Solid red
Optical module is in position, but module
failure or optical link failure has occurred.
1.3 ESW3L2P-24GE4MS-P
Technical Specifications
Model
ESW3L2P-24GE4MS-P
CPU
Built-in CPU, single-core processor, with a clock speed of 1.2 GHz
BOOT ROM
N/A
Flash Memory
64 MB
SDRAM
DDR4 512 MB
Supported Modules
Module types are subject to updates without prior notification. For detailed
information, please contact Windbit.
SFP Port
2500Base-X Capable
1000Base-X Capable
100Base-FX Capable
Power Supply
AC input:
Rated voltage range: 100 V AC to 240 V AC
Maximum voltage range: 90 V AC to 264 V AC
Frequency: 50 Hz/60 Hz
Rated current: 6 A
Ground Leakage Current
≤ 3.5 mA

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ESW3L2P Series Switches 11
EEE Function
Support
PoE Function
All RJ45 ports are PoE/PoE+ capable.
Maximum PoE/PoE+ output power: 370 W
The switch’s maximum supported number of PoE devices is contingent upon
both the PoE output power of the switch and the actual power requirements of
the connected PoE devices.
PoE Power Cable Pairs
Mode A (1-2, 3-6 pairs)
Power Consumption
Without PoE load: < 33 W
With PoE full load: < 403 W
Operating Temperature
0°C to 45°C (32°F to 113°F) at an altitude of 0-1800 m (1.12 miles)
Between altitudes of 1800 m and 5000 m (1.12 miles to 3.11 miles), the
maximum operating temperature decreases by 1°C (1.8°F) every time the
altitude increases by 220 m (721.78 ft.).
Storage Temperature
-40ºC to 70ºC (-40°F to 158°F)
Operating Humidity
10% to 90% RH
Storage Humidity
5% to 90% RH
Operating Height
0 to 5000 m (3.11 miles) above the sea level
Fan
Support fan speed control and fan fault alarm
Temperature Alarming
Support
EMC Certification
DIRECTIVE 2014/30/EU (EMC)
Safety Regulation Compliance
DIRECTIVE 2014/35/EU (LVD)
Dimensions (W × D × H)
440 mm × 220 mm × 43.6 mm (17.32 in. × 8.66 in. × 1.72 in.), 1RU
Weight
About 2.8 KG (6.17 lbs.)
The ESW3L2P-24GE4MS-P switch is a Class A product and may cause radio interference in the living environment;
proper measures are advised.
Product Appearance
The ESW3L2P-24GE4MS-P Ethernet switch is equipped with one RJ45 console port, one USB port, 24 RJ45
10/100/1000Base-T adaptive Ethernet ports, and four SFP ports.
Figure 1-21 Appearance of ESW3L2P-24GE4MS-P Switch

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ESW3L2P Series Switches 12
Front Panel
Figure 1-22 Front Panel of ESW3L2P-24GE4MS-P Switch
Description:
1. System status LED
2. PoE status LED
3. PoE button
4. USB port
5. Console port
6. 10/100/1000Base-T adaptive Ethernet port
7. SFP port status LED
8. SFP port
Press the port LED mode switching button (PoE button) to toggle between the port status indicator functions, including
the port PoE power supply indicator and port rate indicator. Ensure successful switching by holding down the button
for more than 2 seconds.
Back Panel
Figure 1-23 Back Panel of ESW3L2P-24GE4MS-P Switch
Description:
1. Grounding stud
2. Power cord retention clip hole
3. Power plug
Power Supply

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ESW3L2P Series Switches 13
The ESW3L2P-24GE4MS-P switch employs an AC power supply.
⚫AC input:
Rated voltage range: 100 V AC to 240 V AC; 50 Hz/60 Hz
Maximum voltage range: 90 V AC to 264 V AC; 47 Hz to 63 Hz
Frequency: 50 Hz/60 Hz
Rated current: 6 A
Power cord requirements: 10 A power cord
Heat Dissipation
The ESW3L2P-24GE4MS-P switch utilizes left-to-right airflow to effectively dissipate heat, ensuring optimal performance
in the specified environment. When positioning the chassis, maintain a minimum clearance of 10 cm (3.94 in.) on both
sides and around the back panel to facilitate proper air circulation. To prevent obstruction of ventilation openings on the
housing, it is recommended to dust the device every three months.
Figure 1-24 Airflow Direction of ESW3L2P-24GE4MS-P Switch
LED
LED
Panel Identification
Status
Description
System status
LED
Status
Blinking
green
The system is in the initialization phase.
Solid green
The system is operating normally.
Solid yellow
An over-temperature alarm has been
triggered.
Solid red
1. Temperature severely surpasses the
threshold, prompting a system restart.
2. A system failure has occurred.
Port LED mode
indicator
LED Mode
Solid green
Indicates the switching status.
Solid yellow
Indicates the PoE status.
1-24
Off
No link detected for this port.

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ESW3L2P Series Switches 14
1000 Mbps RJ45
port LED
Solid green
Port has a 10/100/1000 Mbps link
established.
Blinking
The port is actively receiving or transmitting
data.
PoE status LED of
RJ45 port
1-24
Off
PoE is disabled.
Solid green
PoE is enabled.
Blinking
PoE overload.
SFP port status
LED
25F-28F
Off
No link detected for this port.
Solid green
Link established.
Blinking
The port is actively receiving or transmitting
data.
Solid yellow
Optical attenuation value surpasses
specified communication quality
requirements.
Solid red
Optical module is in position, but module
failure or optical link failure has occurred.

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ESW3L2P Series Switches 15
2 Preparing for Installation
2.1 Safety Precautions
To ensure personal safety and prevent device damage, carefully review the safety precautions before installing the
Windbit ESW3L2P series switches.
The following safety precautions may not encompass all possible dangers.
2.1.1 Installation Safety
⚫Keep the chassis clean and free from dust.
⚫Avoid placing the device in high-traffic areas.
⚫During installation and maintenance, refrain from wearing loose clothing, jewelry, or anything that may catch on the
chassis.
⚫Disconnect all power supplies and unplug power cords before handling the switch.
2.1.2 Handling Safety
⚫Minimize frequent handling of the device.
⚫Maintain balance to prevent personal injuries when handling the switch.
⚫Cut off all power supplies and unplug power cords before moving or handling the device.
2.1.3 Electric Safety
⚫Adhere to local regulations and specifications during electric operations, limiting such tasks to personnel with relevant
qualifications.
⚫Assess the work area for potential risks, ensuring the power supply is grounded, the grounding is reliable, and the
ground is dry.
⚫Identify the indoor emergency power switch position before installation and cut off power switch in case of accidents.
⚫Avoid solo maintenance of a powered-on switch.
⚫Conduct a thorough check before shutting down the power supply.
⚫Avoid placing the switch in damp locations and keep it away from liquids.
Nonstandard or inaccurate electrical operations can lead to accidents, including fire or electrical shock, causing
severe or fatal damage to humans and equipment.
Direct or indirect contact with high-voltage and mains supply through wet objects may pose a fatal danger.
In a power supply system featuring a leakage protector (also known as a "leakage current switch" or "leakage current
breaker"), it is imperative that the rated leakage action current of each protector exceeds twice the theoretical
maximum leakage current of all power supplies within the system. For instance, in a system with sixteen identical
power supplies, each having a leakage current equal to or less than 3.5 mA, and a total system leakage of 56 mA, a
leakage protector with a 30-mA rated action current would support fewer than five power supplies. This calculation –

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ESW3L2P Series Switches 16
determined by the formula: Action current of the leakage protector/2/Maximum leakage current of each power supply
= 30/2/3.5 ≈ 4.28 –indicates that the leakage protector with a 30-mA rated action current supports no more than four
power supplies. Consequently, the sixteen power supplies in the system require a minimum of four leakage protectors,
each equipped with a 30-mA rated action current, with each protector supporting four power supplies. In cases where
power supplies vary in models, the rated leakage action current of each leakage protector, divided by two, must
surpass the sum of the maximum leakage current of all power supplies. The rated leakage non-action current should
be 50% of the leakage action current. Consider a leakage protector with a 30-mA rated leakage action current; its
rated leakage non-action current should be 15 mA. Failure to adhere to this sensitivity may result in incorrect operation,
causing the leakage protector to trip, devices to power off, and services to be interrupted.
To ensure personal safety, it is paramount that the rated leakage action current of each leakage protector in the
system remains equal to or less than 30 mA (as the human body safety current is 30 mA). When twice the total
leakage current of the system exceeds 30 mA, the system must be equipped with two or more leakage protectors.
Refer to the technical specifications table in Chapter 1 for the leakage current value of each product model.
2.1.4 Electrostatic Discharge Safety
To safeguard against electrostatic discharge damage, adhere to the following guidelines:
⚫Ensure the grounding screw on the device’s back panel is securely grounded. Use a single-phase three-core power
socket with protective earthing conductors (PE) for the AC power socket.
⚫Maintain a clean indoor installation environment, free of dust.
⚫Keep indoor humidity within the recommended range.
2.1.5 Laser Safety
The Windbit ESW3L2P series switches support various optical modules in themarket, categorized as Class I laserproducts.
To avoid damage, observe the following precautions:
⚫When a fiber transceiver is operational, ensure the port is connected with a fiber-optic cable or covered by a dust cap
to prevent dust and protect your eyes.
⚫Avoid pulling out the fiber-optic cable and staring at the transceiver interface while the optical module is active to
prevent eye injury.
Under no circumstances approach or stare at any optical port, as this action may lead to permanent eye damage.
2.1.6 Storage Security
For optimal device functionality, adhere to proper storage conditions aligned with temperature and humidity specifications
found in the technical specifications table of the relevant device.
If the storage duration exceeds 18 months, power on the device and run it continuously for 24 hours to activate the
device.

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ESW3L2P Series Switches 17
2.2 Installation Environment Requirements
To ensure the normal operation and prolonged service life of the device, the installation site must meet the following
requirements.
You are not advised to install the Windbit ESW3L2P series switches in a ELV box.
2.2.1 Ventilation and Cooling Requirements
Maintain a minimum 10 cm (3.94 in.) clearance on both sides and around the back panel of the switch for effective air
ventilation and heat dissipation. After connecting various cables, bundle or place them in the cable management bracket
to prevent blockage of air inlets. Periodically dust the device every three months to prevent blockage of ventilation openings
on the housing.
2.2.2 Temperature and Humidity Requirements
Ensure the equipment room maintains an appropriate temperature and humidity to ensure normal operation and extend
the switch’s service life. Prolonged exposure to excessively high or low temperatures and humidity may damage the switch.
⚫In high humidity environments, insulating material may lose effectiveness, leading to poor insulation or electrical
leakage, and potential rusting of metal parts.
⚫In low humidity environments, insulating strips may dry and shrink, static electricity may occur, risking damage to
internal switch circuits.
⚫Elevated ambient temperatures can degrade device performance and cause various hardware faults.
Refer to the table below for specific temperature and humidity requirements for Windbit ESW3L2P series switches.
Temperature
Relative Humidity
0 ºC to 50ºC (32°F to 122°F)
10% to 90%
Ambient temperature and humidity criteria for sampling points:
Measurements are taken 1.5 m (59.06 in.) above the floor and 0.4 m (15.75 in.) in front of the switch rack, with no
protective plate in front or at the back of the rack.
2.2.3 Cleanliness Requirements
Dust poses a significant threat to the switch as indoor dust acquires a positive or negative static electric charge upon
contact, leading to poor contact of metallic joints. Electrostatic adhesion is more likely to occur in low relative humidity,
impacting the switch’s service life and causing communication faults. The specified requirements for dust content and
granularity in the equipment room are detailed in the following table.
Dust
Unit
Content
Dust particles (diameter ≥ 0.5 μm)
Particles/m3
≤ 3.5×106
Dust particles (diameter ≥ 5 μm)
Particles/m3
≤ 3×104
In addition to dust, strict requirements must be met for salt, acid, and sulfide levels in the air within the equipment room.
These substances will accelerate metal corrosion and component aging. Therefore, protection against the intrusion of
harmful gases like sulfur dioxide, hydrogen sulfide, nitrogen dioxide, and chlorine gas is crucial. The following table lists
limit values for harmful gases.

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ESW3L2P Series Switches 18
Gas
Average (mg/m3)
Maximum (mg/m3)
Sulfur dioxide (SO2)
0.3
1.0
Hydrogen sulfide (H2S)
0.1
0.5
Nitrogen dioxide (NO2)
0.5
1.0
Chlorine gas (CI2)
0.1
0.3
Average values represent the weekly average of harmful gases, while Maximum values indicate the upper limit
measured within a week, lasting up to 30 minutes per day.
2.2.4 Anti-interference Requirements
The switch is vulnerable to external interference from capacitive coupling, inductive coupling, electromagnetic waves,
common impedance (ground) coupling, or conduction over power lines, signal lines and output lines. To mitigate these
risks, observe the following guidelines:
⚫In a TN earthing system, use a single-phase three-core power socket equipped with protective earthing conductors
(PE) to enable the filter circuit in the device to eliminate interference from the power grid.
⚫Position the switch far away from large power radio launch pads, radar launch pads, and high-frequency large-current
devices to minimize potential interference.
⚫Use EMI shielding, such as shielded interface cables, to reduce interference as needed.
⚫Route interface cables indoors exclusively to prevent signal ports from being damaged by overvoltage or overcurrent
resulting from lightning strikes.
2.2.5 Grounding Requirements
Grounding is fundamental for the stable and reliable operation of the ESW3L2P series switches, playing a crucial role in
preventing lightning strikes and interference. Thoroughly assess the grounding conditions at the installation site in
accordance with grounding specifications, and ensure proper grounding based on the specific circumstances.
Thoroughly inspect the grounding conditions at the installation site in accordance with grounding specifications,
ensuring that grounding is adequately performed based on the specific circumstances.
Safety Grounding
Ensure secure grounding of the switch with a yellow/green grounding cable when using AC power to prevent potential
electric shock from occurring due to reduced insulation resistance between the power supply within the switch and the
chassis.
The building must establish a protective ground connection to ensure the device is connected to the protective ground.
Installation and maintenance personnel should verify that the AC socket is reliably connected to the building’s
protective ground. If not assured, personnel should use a protective ground cable, connecting the AC socket’s
protective grounding lug to the building’s protective ground.
Position the power socket conveniently near the device for easy operation.
During device installation, prioritize connecting the ground cable first and disconnecting it last.
The protective ground cable should have a cross-sectional area of at least 0.75 mm2(18 AWG).
Install the device by using 3-core power cords, with a minimum cross-sectional area of 0.75 mm2or 18AWG per pin.

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ESW3L2P Series Switches 19
Lightning Grounding
The lightning protection system for facilities comprises an autonomous system involving a lightning rod, a downlead
conductor, and connector connected to the grounding system. Typically, the grounding system serves as a reference for
power grounding and ensures the cabinet’s safe grounding. Lightning grounding is exclusive to facilities and is not
mandatory for the device.
EMC Grounding
In terms of electromagnetic compatibility grounding, it encompasses shielded grounding, filter grounding, noise and
interference suppression, and level reference, contributing to comprehensive grounding requirements. The ground cable’s
resistance should be below 1 ohm. Each switch in the ESW3L2P series is equipped with one grounding connector on the
back panel, as shown in Figure 2-1.
Figure 2-1 Grounding of ESW3L2P Series Switches
Lightning Protection Requirements
When an AC power cord is extended from an outdoor source and directly linked to the switch’s power port, it is imperative
to connect the AC power port to an external lightning-resistant socket to shield the switch from lightning strikes. Employ
the lightning resistance socket in the following manner: Begin by connecting the mains AC power cable to the lightning
resistance socket, and subsequently, link the switch to the lightning resistance socket. This method serves to mitigate, to
a certain extent, the risk of high-voltage lightning current directly traversing through the switch via the mains cable.
Lightning resistance sockets are acquired by customers based on their specific needs.
For in-depth information about lightning resistance sockets, refer to the corresponding user guide.

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ESW3L2P Series Switches 20
2.2.6 EMI Requirements
Interference within or around the device can stem from external or internal sources, impacting it through capacitive coupling,
inductive coupling, or electromagnetic waves.
Electromagnetic interference (EMI) arises from either electromagnetic radiation or conduction, depending on the
transmission path.
Radiated interference occurs when energy, often RF energy, from a component reaches a sensitive component through
space. The interference source can be part of the interfered system or an electrically isolated unit. Conducted interference
results from electromagnetic wire or signal cable connections between the source and the sensitive component. The
interference is conducted from one unit to another through cables. Conducted interference often affects power supply but
is manageable with filters. Radiated interference may affect any signal path and is challenging to shield.
⚫Implement interference prevention measures for the power supply system.
⚫Keep the switch far away from the lightning protection and grounding system of the power device.
⚫Keep the switch far away from high-frequency current devices like high-power radio transmitting stations and radar
launchers.
⚫Employ electromagnetic shielding measures when necessary.
2.3 Tools
The table below lists tools required for installation.
Common Tools
Phillips screwdriver, straight screwdriver, related Ethernet cables and fiber-optic cables, screws,
diagonal pliers, binding straps
Special Tools
Anti-static tools
Meters
Multimeter
The device is delivered without a tool kit, and users should supply the listed tools accordingly.