H3C DG-240-55 Industrial Power Supply
Installation Quick Start
New H3C Technologies Co., Ltd.
http://www.h3c.com
Document version: 5W100-20191025
Copyright © 2019, 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
This document provides a quick start guide for installing the H3C DG-240-55 industrial power supply.
It also covers the power supply views, technical specifications, and installation environment and
guidelines.
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 H3C DG-240-55 industrial power supply.
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 syntax choices separated by vertical
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
.
Convention Description
>
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.
T
T
T
T
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.
Documentation feedback
You can e-mail your comments about product documentation to info@h3c.com.
We appreciate your comments.
i
Contents
1 Preparing for installation ······························································· 1-1
Installation environment ············································································································ 1-1
Installation guidelines··············································································································· 1-1
2 Installing the power supply ···························································· 2-1
Mounting the power supply on a DIN rail ······················································································ 2-1
Removing the power supply from a DIN rail ·················································································· 2-1
3 Connecting power cords ······························································· 3-1
Connecting an AC input power cord ···························································································· 3-1
Connecting a DC output power cord ···························································································· 3-2
4 Appendix A Views and technical specifications ·································· 4-1
Views ··································································································································· 4-1
Technical specifications ············································································································ 4-2
5 Appendix B Protection mechanism ················································· 5-1
6 Appendix D LEDs ······································································· 6-1
1-1
1 Preparing for installation
H3C DG-240-55 industrial power supply is an AC-input and DC-output power supply designed for
industrial Ethernet switches. It can be installed only on a TS-35/7.5 or TS-35/15 DIN rail.
Installation environment
Make sure you install the power supply in a favorable environment.
• Do not expose the power supply to direct sunlight, strong mechanical vibrations, shocks, or
magnetic fields.
• Prevent any liquid, foreign objects, or corrosive gas from entering the power supply.
• Do not place the power supply near water or in a damp place and prevent water or moisture
from entering it.
• Keep the power supply as far away as possible from noise sources.
• Keep the air vents of the power supply open and avoid any blocking.
• To prevent the power supply from overheating, ensure a minimum clearance of 100 mm (3.94 in)
above and below the power supply and 50 mm (1.97 in) at both sides of the power supply. If an
adjacent device is a heating source (such as another power supply), increase the distance
between the two to more than 75 mm (2.95 in).
• To prevent a power cord from causing a fire when an overload occurs, use an AWG16-10 power
cord for the power supply. An AWG16-10 power cord has a maximum diameter of 2.8 mm (0.11
in). As a best practice, strip a maximum of 7 mm (0.28 in) of insulation from the power cord for
connection.
IMPORTANT:
To connect the power supply to a device, make sure the diameter of the power cord meets the
acceptable range allowed by the power port on the device.
Installation guidelines
To avoid bodily injury or damage to the power supply, read the following information carefully before
installing the power supply:
• Only authorized personnel can install and operate the power supply.
• Before installing the power supply, cut off power input and make sure no voltage is present on
the power supply.
• When installing the power supply, avoid any intrusion, such as metal sheets, conductors, clips,
or scissors, into the power supply.
• Do not dissemble, refit, or repair the power supply or touch the inside of the power supply.
• Before connecting power to the power supply, use a multimeter to test whether the live wire,
neutral wire, or PE wire is short-circuited and whether the output end is short-circuited.
• Make sure the input and output terminals are correctly connected.
• When the power supply is operating, do not touch it or any wire or terminal.
• Allow the voltage to disappear before you touch the power supply just powered off. When the
power supply is operating, its internal voltage can reach up to 400 V. Residual voltage remains
30s after the power is cut off.
1-2
• Ground the power supply reliably to ensure safety and reduce interference.
• To avoid electric shock, do not remove the power supply housing. If the power supply is faulty,
do not repair it yourself. Contact the technical support.
• Make sure the operating voltage is correct and stable and does not exceed the nominal
specifications to ensure the availability of the power supply.
• Do not switch on or off the power supply frequently. Doing so might shorten the lifetime of the
power supply.
2-1
2 Installing the power supply
Mounting the power supply on a DIN rail
CAUTION:
• Use a TS-35/7.5 or TS-35/15 DIN rail that complies with the EN 60715 or EN 50022 standard fo
r
mounting the power supply.
• When calculating the total installation depth of the power supply, you must include the thickness
of the DIN rail.
• To ensure correct operation and long service life of the power supply, orient and install the powe
r
supply as described in the following procedure.
You can mount the power supply only on a DIN rail. The following procedure mounts the power
supply on a TS-35/7.5 DIN rail:
1. Position the power supply so that the hooks of the DIN rail mounting bracket hooks onto the
upper edge of the DIN rail.
2. Pull down and hold the spring-loaded latch of the DIN rail mounting bracket.
3. Rotate the router towards the DIN rail so that the DIN rail snaps into the mounting bracket.
4. Release the latch of DIN rail mounting bracket to secure the mounting.
Figure2-1 Mounting the power supply on a DIN rail
Removing the power supply from a DIN rail
1. Pull down and hold the latch of the DIN rail mounting bracket.
2. Press down the power supply slightly and rotate the power supply bottom away from the DIN
rail so that the bottom of the DIN rai mounting bracket is disengaged from the DIN rail.
3. Release the latch of the DIN rail mounting bracket and then lift the power supply to remove it
from the DIN rail.
2-2
Figure2-2 Removing the power supply from a DIN rail
3-1
3 Connecting power cords
The power supply has power input and output terminals, used for connecting AC and DC power
cords, respectively.
The power cord wiring color codes vary by country and region. The wire colors in Figure3-1 ar
e for
illustration only.
Figure3-1 Connecting power wires to the power supply
Connecting an AC input power cord
WARNING!
• High voltage is present on the AC input power wires. Make sure the AC power is cut off before
connecting the AC input power wires.
• Make sure no exposed part of an AC input power wire extends from the connector.
To connect AC power wires:
1. Insert the exposed PE wire into the ground terminal ( ) at the bottom of the power supply.
2. Insert the live and neutral wires into the live (L) and neutral (N) terminals, respectively.
3. Fasten the screws on the terminals to secure the wires.
3-2
Connecting a DC output power cord
1. Connect the DC output power wires to the wiring terminals at the top of the power supply, with
the positive wire (red in Figure3-1) to a positive termin
al (+V) and negative wire (black wire
in Figure3-1)
to a negative terminal (-V).
Two positive terminals (+V) are provided for the positive output and two negative terminals (-V)
are provided for the negative output.
2. Fasten the screws of the terminals to secure the power wires.
4-1
4 Appendix A Views and technical
specifications
Views
Figure4-1 H3C DG-240-55 industrial power supply view
No. Mark Description
1 DC (relay pin 1)
When the output voltage increases to 40±5 VDC, the relay
closes the contact.
When the output voltage decreases to 35±5 VDC, the relay
opens the contact.
2 OK (relay pin 2)
3 +V DC output positive connection.
4 -V DC output negative connection.
5 +V ADJ
Voltage output adjuster.
Turning the adjuster clockwise increases the output voltage.
Turning the adjuster counterclockwise decreases the output
voltage.
6
DC-OK (green)/Overload
(red)
Output status LED. See "Appendix D LEDs" for the LED
descri
ption.
4-2
No. Mark Description
7 Parallel Use/Single Use
A switch that controls parallel use or independent use of the
power supply.
8 L AC input live wire connection.
9 N AC input neutral wire connection.
10
AC input PE wire connection.
IMPORTANT:
• The DC-OK relay detects the output voltage of the power supply. The maximum load that the
DC-OK contact can bear is 30 VDC/1 A, 60 VDC/0.3 A, or 30 VAC/0.3 A.
• The parallel/single use switch is factory set to the Parallel Use position.
A
s a best practice, do not
change the switch position.
• When multiple power supplies are used in parallel, make sure the average output power of each
power supply does not exceed 95% of the rated output power as a best practice.
Technical specifications
Table4-1 Technical specifications
Item Specification
Dimensions (H × W × D) 124 × 45 × 119 mm (4.88 × 1.77 × 4.69 in)
Weight 760 g (26.81 oz)
Rated input voltage range 100 to 240 VAC @ 50 or 60 Hz
Max. input voltage range 90 to 264 VAC @ 47 to 63 Hz
Max. input current
• 90 to 176 VAC: 3 A
• 176 to 264 VAC: 2 A
Rated output voltage 55 VDC
Output voltage adjustment range 53.35 to 56.65 VDC
Output current
• 90 to 176 VAC: 2.72 A
• 176 to 264 VAC: 3.63 A
Rated output power
• 90 to 176 VAC: 150 W
• 176 to 264 VAC: 200 W
Ambient humidity 5% RH to 95% RH, noncondensing
Safety/EMC compliance
• Safety: IEC 60950-1, EN 60950-1, UL 60950-1, IEC
62368-1, EN 62368-1, UL 62368-1
• EMI: EN 55032 Class A, EN 61000-3-2, EN 61000-3-3
• EMS: EN 300386, EN 61000-6-2, EN 55024, EN
61000-4-2, EN 61000-4-3, EN 61000-4-4, EN
61000-4-5, EN 61000-4-6, EN 61000-4-8, EN
61000-4-11
Cooling Natural cooling
Protection rating IP20
5-1
5 Appendix B Protection mechanism
The power supply has a protection mechanism against overcurrent, overvoltage, short circuit, and
overtemperature conditions.
Table5-1 Power supply protection mechanism
Protection feature Protection mode Recovery
Overcurrent
protection
Does not provide power. The LED is
steady red.
Automatically recovers after the issues
are resolved. The LED is steady
green.
Overvoltage
protection
Provides power at a constant voltage level
(58 to 63 VDC). The LED is steady green.
Automatically recovers after the issues
are resolved. The LED is steady
green.
Short-circuit
protection
Does not provide power. The LED is
steady red.
Automatically recovers after the issues
are resolved. The LED is steady
green.
Overtemperature
protection
Does not provide power. The LED is
steady red.
Automatically recovers after the issues
are resolved. The LED is steady
green.
6-1
6 Appendix D LEDs
The power supply provides a LED to indicate the power output state.
Table6-1 LED description
LED status Description
Steady green The output voltage increases to 37.5±5 VDC.
Steady red
• The power supply has entered undervoltage protection mode.
• The power supply has entered overcurrent protection mode.
• The power supply has entered short-circuit protection mode.
• The power supply has entered overtemperature protection mode.
Off No AC power input.
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