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