DPC DHG07-48/42 User manual

Small Cell Power System
User’s Manual
（D2212901500104SS A）
Beijing Dynamic Power CO., Ltd.

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Statement
Beijing Dynamic Power Co., Ltd. (abbreviation :DPC) provides customers with comprehensive technical
support. Users can contact the nearest DPC office or customer service center, or directly contact the
company headquarters.
Beijing Dynamic Power CO., Ltd.
Copyright, all rights reserved.
No part or all of this document may be extracted, copied or translated in any way without the written
permission of the company, and may not be transmitted in any form (including materials, publications
and networks).
The contents of this document are subject to change without notice due to product version upgrades or
other reasons.
Beijing Dynamic Power Co., Ltd.
Address: No.8, Xinghuo Road, Science Park City, Fengtai District, Beijing, China
Postal Code:100070
Website: www.dpc.com.cn ; en.dpc.com.cn
Hotline：[phone]

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Safety Precautions
Read the operating instructions and precautions carefully before starting installation or operation to
avoid accidents. The “Caution, Warning, Hazard” and other matters in the product and product
manual do not represent all the safety precautions that should be observed. They are only used as a
supplement to the safety precautions in various installation and use operations. Therefore, the
person responsible for product installation and operation must undergo professional training, master
the correct operation method of the system and various safety precautions before installing or
operating the equipment.
In the installation or operation of the company's equipment, it must comply with the relevant industry
safety regulations and engineering design specifications, and strictly abide by the relevant
equipment precautions and special safety instructions provided by Beijing Dynamic Power Co., Ltd.
Electrical Safety
Grounding
⚫When installing the device, you must first install the PGND cable. When you remove the device,
you must remove the PGND cable.
⚫Ensure that the equipment is reliably grounded before powering up.
High voltage
Some parts of the power system are operated with high voltage, and direct
contact or indirect contact with these parts through wet objects can be fatal.
Improper, incorrect operation may result in accidents such as fire or electric
shock. The area where the AC cable is routed must comply with local
regulations and specifications. Personnel performing various high-voltage
operations must have high-voltage, AC operation qualifications.
⚫The installation of this equipment must comply with the safety regulations of the relevant
industry and the engineering design specifications of the equipment. The personnel who
perform the equipment installation operation must have the qualifications of high voltage and
alternating current.
⚫A prohibited sign must be attached to the device or switch that cannot be operated during the
installation process.
Tools
When performing various operations on high voltage and alternating current,
special tools must be used, and ordinary or homemade tools must not be
used.
Short circuit
It is strictly forbidden to short-circuit the positive and negative DC power
distribution of the power system or short-circuit the non-grounding pole (end)
to the ground. The power supply equipment is a constant voltage DC power
supply equipment. When short circuited, it will cause strong arc or equipment
fire, which will endanger the safety of people and equipment.

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⚫Before connecting a load (powered device) cable or battery cable, the polarity of the cable and
interface terminals must be strictly checked.
⚫It is strictly forbidden to wear conductive objects such as watches, bracelets, bracelets and rings
during operation.
⚫Insulation tools must be used during operation.
⚫When operating with power, pay attention to the impact of the operating space on live working. If
necessary, set insulation protection measures in the operating area to avoid the risk of short
circuit when the tool is stuck or disconnected.
Thunderstorm
It is strictly forbidden to carry out high voltage and alternating current
operation under thunderstorms.
⚫In thunderstorms, strong electromagnetic fields are generated in the atmosphere. To avoid
damage to the equipment caused by lightning strikes, ensure that the equipment is well
grounded.
Static electricity
Static electricity generated by the human body can damage static-sensitive
components on the board, such as large-scale integrated circuits (ICs).
Before touching the device, circuit board or IC chip, etc., must wear an
anti-static wrist strap and ground the other end of the ESD-preventive wrist.
⚫When holding a circuit board, you must hold the component part of the edge of the board. Do not
touch the chip with your hand.
⚫The removed circuit board must be packaged in an antistatic package and stored or transported.
Liquid proof, explosion proof
This product should be placed in an area away from liquids. It is forbidden to
be installed under the leaky position such as vents, air conditioning ports, and
the data room outlet windows to prevent liquid from entering the device and
causing short circuit.
Do not place the device in a flammable, explosive, corrosive gas or smog
environment. Do not perform any operation in this environment.
⚫Do not flush the electrical components inside and outside the equipment with water.
⚫When you notice water, moisture, or condensation in the cabinet, turn off the power immediately.
When operating in a humid environment, conductive liquid such as water should be strictly
prevented from entering the equipment.
Battery safety
Before you perform battery work, you must read the battery's instruction
manual carefully, follow the safety precautions specified, and the correct
connection method for the battery.
⚫The environment of the battery is required to be free from direct sunlight or rain, dry and well
ventilated, free of corrosive gases, away from fire and organic solvents.
⚫Excessive battery temperature can cause battery deformation, damage, or electrolyte spillage.
⚫The battery has extremely high electrical energy, and unregulated operation can be a serious
hazard. The safety precautions specified in the battery operation must be strictly followed during

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operation. Pay attention to the influence of the operating space on live working, and the battery
short circuit should be carefully guarded.
⚫Make sure the battery circuit is disconnected before installation, maintenance, disassembly, etc.
⚫The battery should always keep the electrode facing up during the handling process. It is strictly
prohibited to invert and tilt.
⚫Special insulated tools must be used for operation.
⚫Protective measures must be taken during operation. Protective glasses, rubber gloves, rubber
boots, rubber aprons, etc. should be used.
Others
Structural component
It is forbidden to modify the structure of the equipment and replace
the position of the plate, replace the components and drill holes in
the cabinet without authorization. Changes that do not meet the
requirements will affect the heat dissipation and electromagnetic
shielding of the equipment. Self-drilling can also cause metal chips
to enter the cabinet and cause short circuit.
Sharp corner of object
Wear protective gloves when handling equipment by hand to prevent cuts
from sharp objects

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Content
1. System Overview................................................................................................................................................ 7
1.1 System features............................................................................................................................................ 7
1.2 Main purpose and scope of application ....................................................................................................... 8
The small cell power system is applicable to the mobile tower, telecommunication, mobile, transmission,
access network, as well as the private network field such as hydraulic power, army, public security, railway,
bank, computer center and other dc power supply system. ............................................................................... 8
1.3 varieties and specifications；...................................................................................................................... 8
1.4 The composition of the model and its representative meanings.................................................................. 9
1.5 operation environment conditions ............................................................................................................... 9
1.6 Working conditions................................................................................................................................. 10
1.7 Impact on the environment and energy...................................................................................................... 10
1.8 Safety......................................................................................................................................................... 10
1.8.1 Insulation resistance.........................................................................................................................11
1.8.2 Electrical strength............................................................................................................................11
1.8.3 System contact earth current............................................................................................................11
1.9 Implementation standards...........................................................................................................................11
2 Structural characteristics and working principle....................................................................................................11
2.1 Overall structure .........................................................................................................................................11
2.2 Principle of work....................................................................................................................................... 12
2.3 2K power module configration............................................................................................................... 13
2.4 50AH Lithium module configuration........................................................................................................ 15
3 Technical feature................................................................................................................................................... 16
4 Installation............................................................................................................................................................ 17
4.1Mechanical installation............................................................................................................................... 17
4.1.1 Pole type......................................................................................................................................... 17
4.1.2 Parallel installation ......................................................................................................................... 19
2. 50AH Lithium battery Parallel installation.......................................................................................... 21
4.2 Electrical Installation................................................................................................................................. 22
4.2.1 Power cable installation.................................................................................................................. 22
4.2.2 Signal cable installation.................................................................................................................. 25
5 Use and operation................................................................................................................................................. 27
5.1 Use of Bluetooth APP:：........................................................................................................................... 27
5.1.1 Installations ofAPP ........................................................................................................................ 27
5.1.2 Use of APP...................................................................................................................................... 27
5.2 SNMP Software User Manual ................................................................................................................... 33
5.2.1 WEB Service Explaination..................................................................................................................... 33
1）web Login.......................................................................................................................................... 33
2）Network Configuration...................................................................................................................... 34
3）SNMP Setting .................................................................................................................................. 35
4）Power real-time data view ................................................................................................................. 35
5）Historical alarm data query................................................................................................................ 36
5.2.2 CACertificate download and import...................................................................................................... 36
1）Certificate download.......................................................................................................................... 37

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2）Import safety certificate..................................................................................................................... 38
5.2.3 SNMP Use method .............................................................................................................................. 38
6 Failure analysis and troubleshooting .................................................................................................................... 39
6.1 Failure analysis and treatment................................................................................................................... 39
6.1.1 AC failure........................................................................................................................................ 39
6.1.2 AC overvoltage............................................................................................................................ 39
6.1.3AC undervoltage............................................................................................................................. 40
6.1.4 DC overvoltage............................................................................................................................... 40
6.1.5 DC undervoltage.......................................................................................................................... 40
6.1.6 Communication failed.................................................................................................................. 40
6.1.7 Rectifier module failure.................................................................................................................. 41
6.1.8 AC lightning arrester failure........................................................................................................ 41
6.1.9 Low temperature protection......................................................................................................... 41
6.1.10 Discharge high temperature protection...................................................................................... 42
6.1.11 Charging high temperature protection ....................................................................................... 42
6.1.12 Overcharge protection................................................................................................................ 42
6.1.13 Discharge overcurrent protection.................................................................................................. 42
6.2 Replace DC fuse........................................................................................................................................ 43
7 Maintenance.......................................................................................................................................................... 44
8 Transportation and storage.................................................................................................................................... 45
8.1 Packaging................................................................................................................................................... 45
8.2 Precautions for lifting and transportation .................................................................................................. 45
8.3 Storage conditions, storage period and precautions................................................................................... 45
9 Others ................................................................................................................................................................... 45
9.1 Warranty, after-sales service matters, contact methods.............................................................................. 45
9.2 something else ........................................................................................................................................... 45

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1. System Overview
DHG07-48/42 small cell power systems are special designed for outdoor wireless micro base
stations which have high-efficiency, small size, lightweight, easy to install, parameter-free,
maintenance-free etc. features. They also support Bluetooth, support remote monitoring, and support
online expansion.
These systems mainly includes DHG07-48/42 (hereinafter referred to as "power module") and
48V/50Ah (hereinafter referred to as "lithium battery module").The rectifier module convertsAC or high
voltage DC into a stable 48VDC, and the lithium battery module provides backup power for the telecom
device.
The system diagram is shown below：
Diagram 1-1 Small cell power system diagram
1.1 System features
⚫Hardware modularization
–The power module integrates functions such as rectification, monitoring, power distribution,
and lightning protection.
–The lithium battery module integrates battery management system (BMS), power distribution,
and lightning protection.

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–Self-cooling method.
–Small size and light weight.
⚫Application diversity
–A variety of installation scenarios for poles, wall-mounted, channel steel, and angle steel.
–Supports both flag and flat installation.
⚫Flexible combination
–The power modules are flexibly assembled, easy to expand.
−The power module is assembled with the lithium battery module.
⚫Simplified operation
–Single easy installation.
–All the scenes use the same set of mounting parts.
–The input/output port and communication signal port adopt quick-connect terminals to prevent
foolproof and anti-reverse.
–Support plug and play, parameter free, communication free address setting.
⚫Extended convenience
–Supports power module online expansion and increases system load capacity.
–Supports online expansion of lithium battery modules and increases system backup time.
⚫Simple maintenance
–Support remote monitoring.
–Support Bluetooth connection and APP operation.
1.2 Main purpose and scope of application
The small cell power system is applicable to the mobile tower, telecommunication, mobile, transmission, access
network, as well as the private network field such as hydraulic power, army, public security, railway, bank,
computer center and other dc power supply system.
1.3 varieties and specifications；
varieties and specifications refer to sheet 1-3-1 2（KW）sheet 1-3-2（50AH）。
Sheet 1-3-1 Production model、specification（2KW）
Parameter
DHG07-48/42
Output rated DC voltage(V)
-48V
Output rated DC current(A)
42A
Structure dimension
(W×D×H，mm）
290*97*400（mm）
Weight（Kg）
8Kg
Sheet 1-3-2 Production model、specification（50AH）
Parameter
48V/50AH
Output rated DC voltage(V)
-48V
Output rated DC current(A)
50AH
Structure dimension
420*300*190（mm）

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(W×D×H，mm）
Weight（Kg）
33Kg
1.4 The composition of the model and its representative meanings
The power module model naming rules are as follows ：
Lithium battery model named rules as follows：
1.5 operation environment conditions
①Temperature range
Operating temperature range: -40℃～+55℃。
Storage and transportation temperature range: -40℃～+70℃。
②Humidity range
Operating relative humidity range: ≤95% non-condensing (40 ℃±2 ℃).
Storage and transportation relative humidity range: ≤95% non-condensing (40 ℃±2 ℃).
③Atmospheric pressure requirements
Atmospheric pressure (altitude): 70 ~ 106kPa (altitude: 0 ~ 3000m).
Note: The system should be derated for use above 3000m above sea level. For every 200m above sea level,
the working environment temperature will decrease by 1 ℃.
④Vibration, shock and sun protection performance requirements

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Vibration: The system can withstand a sine wave vibration with a frequency of (10 ~ 55) Hz and an
amplitude of 0.35mm;
Shock: The rectifier module can withstand a peak acceleration of 150m / s2 and a duration of 11ms;
Sun: With sun protection and heat insulation measures, it can withstand 1120W / M2 solar radiation.
The equipment room should be free of severe dust, explosive and hazardous media, corrosive metals, harmful
gases that damage insulation, conductive particles, and severe mold, and there should be no strong
electromagnetic field interference.
1.6 Working conditions
AC input voltage: The system uses a single-phase three-wire system; the AC input has a rated current output
in the range of 176 to 285Vac; a derated output in the range of 90 to 176Vac.
AC input frequency: 45 ～55Hz;
1.7 Impact on the environment and energy
System cooling method: self-cooling;
System acoustic noise: 45dB;
System conducted disturbance: The conducted disturbance limit meets the requirements of Article 5.1 of YD
/ T983;
System Radiation Disturbance: The radiation disturbance limit meets the requirements of Article 5.2 of YD /
T983.
1.8 Safety
Safety symbol and term：
WARNING: Alerts you to dangers that can cause personal injury.
WARNING: Alerts you to dangers that may cause equipment failure or damage.
High voltage: It indicates that there is a high voltage above 300V on the device, please pay attention to
personal safety.
Warranty matters:
Beijing Power Source Technology Co., Ltd. solemnly promises to assume the following conditions:
Free warranty for failure.During the warranty period, repair or replacement of faulty equipment is determined by
Beijing Power Source Technology Co., Ltd.
Changes in product functions and performance due to technical updates are not included in this manual.
For special ordering system, please refer to this manual.
After the AC power failure, please ask the user's maintenance personnel to generate power in a timely
manner, on the one hand, it can ensure smooth communication, and at the same time, it is beneficial to battery
maintenance. If not
Generating power in a timely manner will likely disrupt communication, and in severe cases the battery will
！
！

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over-discharge.
1.8.1 Insulation resistance
When the ambient temperature is 15 ～35 ℃and the test voltage is 500V DC, the insulation resistance of
the AC part and the DC part to ground and the AC part to the DC part meet the following requirements: relative
humidity ≤65%, and the insulation resistance is not less than 5M 65% <relative humidity≤90%, insulation
resistance is not less than 2M.
1.8.2 Electrical strength
①The AC input should be able to withstand a sinusoidal AC voltage of 50Hz and an effective value of
1500V or a 2121V DC voltage equivalent to its peak value for 1 min.
No breakdown or flashover.
②The AC input and DC output should be able to withstand a sinusoidal AC voltage of 50Hz and an
effective value of 3000V or a peak voltage of 4242V.
1min without breakdown or flashover.
③The DC output should be able to withstand a sinusoidal AC voltage of 50Hz and an effective value of
500V or a peak value of 707V DC voltage Imin and no
Breakdown or flashover.
④Grounding performance
The grounding resistance between the chassis and grounding parts is <0.1Ω.
1.8.3 System contact earth current
This machine has a large contact current, and it must be grounded before connecting the power.
1.9 Implementation standards
YD/T 1058-2015
《Communication high-frequency switching power supply system》
2 Structural characteristics and working principle
2.1 Overall structure
The small cell power system at the end station adopts a compact structure, integrating DC power
distribution, rectifier modules, monitoring modules, power detection units, etc. into one compact, flexible and
easy to install.
Figure 2-1-1 shows the outline diagram of the small cell power system.

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2K power module 50AH lithium battery module
Figure 2-1-1 shows the outline diagram of the small cell power system.
2.2 Principle of work
Figure 2-2-1 is the schematic diagram of small cell power .
The small cell power system adopts the single-phase three-wire ofAC input. AC is changed into
stable direct current to positive and negative discharge of the system after rectifying, filtering, stabilizing
and other links of the rectifier. The system has a battery interface, the battery via battery fuse, shunt (test
battery current) and the output of the rectifier module in parallel, when AC power failure, The power
supply from customer DC load is by DC PDB .
AC distribution state, rectifier state, battery state, DC shunt state, customer power consumption,
etc. are all detected or controlled by the controller. Bluetooth unit and remote monitoring unit are
configured in the system.At the nearly point, the relevant information of the system can be check
by mobileAPP;At the remote point, the system information can be monitored by remotely PC system .

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Figure 2-2-1 is the schematic diagram of small cell power
2.3 2K power module configration
Figure 2-3-1 power module configration
PWR LOAD1 LOAD2 LOAD3
BAT
1234 5
7 8 9
COM COM_DO
610
SNMP
Figure 2-3-1 small cell power module configration
（1）AC input connector （2）Battery output connector （3）Load output connector 1 （4）Load output
connector2 （5）Load output connector3 （6）Vent valve （7）COM connector（8）COM_DO connector
（9）SNMP RJ45 net interface S (10) Indicator light
✓Power connector

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Figure 2-3-1 power connector description
Connector
Fuse parameter
function
PWR
AC input，connect to power
LOAD1/LOAD2/LOAD3
50A
DC output , connect to load
BAT
50A
Battery shunt, connect lithium battery
module
✓Signal connector
Figure 2-3-2 COM_DO Signal connector pin
1
5
6
10
1115
Figure 2-3-2 COM_DO Signal connector pin
Pin
Signal name
Signal description
function
1
CANH
CAN data receive&send H
Cell power cascae connection
communication
2
CANL
CAN data receive&send L
3
485(N)B
485 data receive
Communication with superior
monitoring system
4
485(N)A
485 data send
8
OPEN1
dry contact output 1
9
COM1
10
OPEN2
dry contact output 2
11
COM2
12
OPEN3
dry contact output 3
13
COM3
14
OPEN4
dry contact output 4
15
COM4
图2-3-3 COM signal connector pin
15
6
9
Figure 2-3-3 COM Signal connector pin define
Pin
Signal name
Signal description
1
CANH
CAN data receive&send H
Cell power cascae connection
communication
2
CANL
CAN data receive&send L
3
485(N)B
485 data receive
Communication with superior
monitoring system
4
485(N)A
485 data send

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5
485(S)B
485 data receive
Communication with lithium battery
6
485(S)A
485 data send
✓Indicator light
Figure 2-3-4 power module indicator light description
Name
Color
Status
Meaning
Serious failure
Indicator light
Red
1second light on、
1second light off
flash
Serious faults include: AC power
failure, DC overvoltage and
undervoltage, fuse failure, module
failure, DC branch disconnection, and
power failure.
General failure
Indicator light
Yellow
1second light on、
1second light off
flash
When a general fault occurs, a fault
other than a serious fault is a general
fault.
Running light
Green
Running light on
normal operation
2.4 50AH Lithium module configuration
Figure 2-4-1 is 50AH Lithium module configuration.
Figure 2-4-1 is 50AH Lithium module configuration.
(1) Vent valve （2）Battery output connector（3）COM connector 1 (4) COM connector 2
(5) Indicator light
✓Power connector
Figure 2-4-1 power connector description
Connector
Fuse model
Function
BAT1/BAT2
None
Battery output connector
✓Signal connector

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Figure 2-4-2 COM1 Signal connector pin
15
6
9
Figure 2-4-2 COM_IN Signal connector pin
Pin
Signal name
Signal description
Function
5
B
RS485 data receive
Commumication with
small cell power and
battery module
6
A
RS485 data send
7.8
CANH/CANL
CAN
Commumication with
battery module
Figure 2-4-3 COM2 Signal connector pin
15
6
9
Figure 2-4-3 COM_OUT Signal connector pin
Pin
Signal name
Signal description
Function
5
B
RS485 receive data
Many cell power cascae
connection
communication
6
A
RS485 send data
7.8
CANH/CANL
CAN
Commumication with
battery module
3 Technical feature
Figure 3-1 small cell system main technical parameter
Figure 3-1 small cell system main technical parameter
Item
DHG07-48/42
Remark
AC input
Single phase 220Vac
AC input voltage range
176～285Vac
DC output nominal voltage
-48VDC
DC output voltage range
-43.2～-57.6VDC

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DC rated output current
42A(2KW)
Voltage regulation precision
≤±0.6%
Load adjustment rate
≤±0.5%
Temperature range
Operating temperature range: -40℃～+55℃
Storage temperature range: -40℃～+60℃
Humidity range
Operating relative humidity: ≤90% (40±2℃)
(no condensation)；
Storage relative humidity: ≤95%(40±2℃) (no
condensation)
Atmospheric pressure
requirement
Atmospheric pressure (latitude): 70～106kPa
(latitude: 0～3000m) Note: The system
should be derated for altitude above 3000m,
and the ambient working temperature should
drop by 1℃every 200m above sea level.
Noise voltage
Telephone balance noise voltage
≤2.0mV
300～3400Hz
Peak-to-peak noise level voltage
≤200mV
0～20MHz
Wide frequency noise voltage
≤50mV
3.4～150KHz
≤20mV
0.15～30MHz
Discrete noise voltage
≤5mV
3.4～150kHz
≤3mV
150～200kHz
≤2mV
200～500kHz
≤1mV
0.5～30MHz
Audible noise
≤45dB
Efficiency
≥95%
Power factor
≥0.99
IP level
IP65
Lightning protection grade
AC In=20KA；DC In=10KA；Signal lightning
protection In=5KA
electromagnetic compatibility
CLASS A
dimension
400*290*97(mm)
weight
8kg(2KW)
Maximum transmission
distance of Bluetooth
20m
4 Installation
4.1Mechanical installation
4.1.1 Pole type
When assembling a power module and a lithium battery module, please refer to the following installation
steps in order.
✓Preparation

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Prepare tools and materials: labor gloves, hex torque screwdriver, slotted screwdriver, Phillips
screwdriver and waterproof plastic bag.
✓Steps
Step 1 Install the power module and the hanging plate of the lithium battery module separately, paying
attention to the installation direction.
Step2: Install the fastening hoops.
Step3: Power module fixing

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Step 4: Li battery modules are mounted side by side on the hoop
Step 5: Installation completed.
4.1.2 Parallel installation
1.small cell power module Parallel installation
✓Preparation
Prepare tools and materials: labor gloves, hex torque screwdriver, slotted screwdriver, Phillips
screwdriver and waterproof plastic bag.