apm200 system description

APM200 System Description

APM200 Auxiliary Power Backup System System Description

Document Version 1.01

Product Version V200R004

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Commercial in Confidence i

Contents

1 Introduction to the APM200........................................................................................................2

1.1 Purpose............................................................................................................................................................. 2 1.2 Positioning ....................................................................................................................................................... 2

2 Features of the APM200 ...............................................................................................................3

2.1 Functional Parts................................................................................................................................................ 3 2.2 Installation Scenarios ....................................................................................................................................... 3 2.3 Environmental Adaptability ............................................................................................................................. 4 2.4 Easy Maintenance ............................................................................................................................................ 4

3 Overview of the APM200.............................................................................................................5

3.1 Appearance and Structure................................................................................................................................. 5 3.2 Benefits and Functions ..................................................................................................................................... 6 3.3 Electrical Specifications ................................................................................................................................... 7 3.4 Engineering Specifications............................................................................................................................... 9 3.5 Physical Interfaces ......................................................................................................................................... 10

4 Typical Application of the APM200........................................................................................12

4.1 APM200 Working with GSM/CDMA Mini Base Stations ............................................................................. 12 4.2 APM200 Working with GSM/CDMA Mini Base Stations and Transmission Equipment.............................. 12


Commercial in Confidence 2

1 Introduction to the APM200 1.1 Purpose

Huawei APM200 is developed for advanced solution of Huawei mini base stations in outdoor application scenario.

1.2 Positioning

The APM200 provides a comprehensive solution for outdoor mini base stations in terms of the following aspects:

Power distribution Lightning protection Transmission equipment embedded installation Transmission cable layout DC power backup

The rollout of the APM200 meets the requirement of fast network construction in urban, suburb and rural area.



2 Features of the APM200 2.1 Functional Parts

The APM200 is an integrated cabinet consists of the following functional parts:

Rectifier Monitoring module Power distribution unit Lightning protection unit Temperature control unit Reserved space for batteries Reserved space for users transmission equipment An reserved AC receptacle

With the above units, the APM200 performs the following functions:

48V DC power supply

Battery management Power distribution Monitoring and communication of the power supply system Lightning protection Temperature control DC Power backup Transmission equipment installation A receptacle for maintenance

2.2 Installation Scenarios

The APM200 can be installed in the following scenarios:

On a rooftop On the concrete floor On an overhead platform (Note1) In addition, the external cables of the APM200 are simple and easy to install.



Note1Since the whole weight of APM200 is very heavy with batteries full configuration, the weight bearing ability requirement is much strict for the overhead platform installation and this installation scenario is not recommended.

2.3 Environmental Adaptability

The APM200 is adaptable to the following environments:

In structural design, the APM200 can protect itself from the damage caused by the following factors: Water Moisture Mould Corrosion Theft

The open holes in the exterior of the APM200 cabinet help prevent the entry of foreign objects into the cabinet. The APM200 is highly adaptable to outdoor environments.

The APM200 can protect the AC/DC power supply against lightning strokes. It can be installed on a rooftop or on a mountain top where lightning strokes frequently occur.

The built-in rectifier of the APM200 can work within a wide range of AC voltages from 176 V AC to 290 V AC (corresponding to the rated power of the rectifier).

The APM200 has a good control of internal temperature and works within the temperature range 40 to +50.

2.4 Easy Maintenance

The cables are led out from the bottom of the APM200 cabinet. You can replace faulty parts, maintain the external ports, and connect the cables from the front of the APM200. The rectifier and the monitoring module are hot-swappable. This facilitates the operation and maintenance of the APM200.



3 Overview of the APM200 3.1 Appearance and Structure

Figure 3-1 shows the appearance and internal structure of APM200.

Figure 3-1 Appearance and Internal Structure of APM200



3.2 Benefits and Functions

The APM200 provides the mini base stations with the following benefits:

48V DC power

Backup power of the batteries Space for installing the transmission equipment

The APM200 performs the following functions:

Battery management Monitoring and communication of the power system Lightning protection Temperature control Table 3-1 describes the functions of the APM200.

Table 3-1 Functions of the APM200

Function Description Remarks

Ensuring temperature in the cabinet

In cold regions, AC heaters can be added in the APM200 cabinet to ensure the normal operation of components in battery and equipment compartment.

Optional

Supplying backup power through batteries

The APM200 can be configured with 1 set or 2 sets of 48V100Ah built-in batteries to supply backup power to mini base stations.

Providing space for transmission equipment

The APM200 can provide a standard 19-inch space of 5U high for user equipment

Providing a built-in rectifier

The rectifier converts the input AC mains into 48V DC power. The rectifier is hot-swappable.

Providing a built-in monitoring module

The module has the following functions: Supporting online insertion and removal Managing the rectifier Charging or discharging the batteries Supporting load low voltage disconnect and battery low

voltage disconnect (LLVD + BLVD) of the load and the batteries

The monitoring module provides one RS485 communication port, four dry contact alarm output ports and reserves three dry contact alarm input ports for remote control, attendance-free monitoring and alarm expansion.

Mandatory



Function Description Remarks

Providing AC power distribution

The APM200 supports single-phase three-wire input (L, N, PE) of 200 V AC to 240 V AC; The APM200 also supports dual live input ((L1, L2, PE)) of 110 V AC.

AC receptacle 200240V AC 10A Providing DC power distribution

Five LLVD outputs, 50A140A125A3. One BLVD output, 16A1.

Protecting the power supply and the signal ports from lightning destroy

The APM200 provides safe and reliable surge protection and inductive thunder protection for the alarm ports, the communication ports and the input and output of embedded power system with built-in AC and DC lightning protection module.

Dissipating heat A heat exchanger is integrated in the top layer APM200 cabinet to make sure wide ambient temperature adaptability for the power system.

Providing the grounding bar

The external grounding bar on the cabinet provides the grounding bus of the cabinet and the grounding cable of the surge protector; and the protected grounding cable of the outside equipment powered by APM200 can be connected to the same grounding bar.

3.3 Electrical Specifications

Table 3-2 lists the electrical specifications of the APM200.

Table 3-2 Electrical specifications of the APM200

Item Specification

Input voltage range 176 V AC to 290 V AC (in this input voltage range, the rectifier in APM200 can output rated power) 90175V ACin this input voltage range, the rectifier in APM200 will output degraded powerNote2

AC input

Typical input voltage 200 V AC to 240 V AC



Item Specification

Frequency of input voltage

40 Hz to 65 Hz

Maximum input current 25 A

Input mode Single-phase AC input through three wires (L, N, and PE) or 110 V AC input through dual live wires (L1, L2, and PE)

Output voltage range 58 V DC to 44 V DC

Output current range 0 A to 60 A

Typical output voltage 53.5 V DC

DC output

DC outputs Five LLVD outputs, 50A140A125A3. One BLVD output, 16A1.



Item Specification

Power Internal heat consumption 200 W This is the maximum total heat consumption

restriction for the 5U reserved user space in APM200.

Input Over-voltage protection and under-voltage protection

Protection

Output Over-voltage protection, over-current protection and short-circuit protection.

Lightning protection for AC input

Rated through-current capacity In (8/20 s): 25kA Maximum through-current capacity Imax (8/20 s): 60 kA

Lightning protection for DC output

Rated through-current capacity In (8/20 s): 15 kA

Lightning protection

Lightning protection for signal ports

Differential mode In (8/20 s): 3 kA Common mode In (8/20 s): 5 kA

Note2 When the input voltage is within 90V AC ~ 175V AC, the rectifiers output is linear degraded. When the voltage input is 90V AC, the minimum rectifier output power is 37.5% of rated power.

3.4 Engineering Specifications

Table 3-3 lists the engineering specifications of the APM200.

Table 3-3 Engineering specifications of the APM200

Item Specification

Weight 120kg (without batteries and transmission equipment)

Cabinet dimensions (W x H x D) 600mm1600mm600mm (without the base)

Base dimensions (W x H x D) 600mm100mm600mm Space for the user equipment (W x H x D)

482 mm222mm480mm Standard 19-inch space of 5 U high for user

equipment. There is 360mm depth after the vertical shaft; and 120mm depth in the front of the vertical shaft for maintenance.



Item Specification

Working temperature

40 to +45 When the ambient temperature is lower than 20, AC heaters are required.

Direct sunlight intensity

1120 W/m2

Relative humidity 5% RH to 100% RH

Working environment

Altitude 4000 m The maximum working temperature decreases by 1 each time the altitude increases by 200 m from 2000 m.

Dustproof and waterproof IP55Equipment compartment IP34Battery compartment

Annual failure rate of the rectifier < 1%

Annual failure rate of the monitoring module

< 0.5%

Fan life L1040 40000hours

3.5 Physical Interfaces

Table 3-4 describes the external physical interfaces of the APM200.

Table 3-4 External physical interfaces of the APM200

Physical Interface Quantity Interface No.

Note3

Interface size specification

AC power input port 1 port 1

48V DC power output port 1~6 ports 49 Outlet for the RS485 communication cable

1 port 15

Outlet for the dry contact alarm cable

1 port 15

The size of No.1 4~15 outlets can meets leading through requirement for the cable with outer diameter 10mm14mm.



Inlet/outlet for the optical cable or the E1 cable to the user equipment

6 ports 1015

Inlet/outlet for the optical cable or the IF cable

2 ports 23 The size of No.2 and 3 outlets can meets leading through requirement for the cable with outer diameter 13mm18mm.

External Grounding Bar 8 terminals / All the grounding nuts are M8 nuts.

Note3The physical interfaces with the same interface no. share the same physical outlet in the cabinet and they are not used at the same time.



4 Typical Application of the APM200 4.1 APM200 Working with GSM/CDMA Mini Base Stations

APM200 with built-in batteries are applied to the GSM/CDMA mini base station to provide -48V DC power and battery backup for it, as shown in Figure 4-1.

Figure 4-1 Typical application of the APM200 (1)

4.2 APM200 Working with GSM/CDMA Mini Base Stations and Transmission Equipment

AC Mini-BTS

485 Signal Cable -48V DC



APM200 with built-in batteries and transmission equipment are applied to the GSM/CDMA mini base stations to provide -48V DC power and battery backup for them, as shown in Figure 4-2.

Figure 4-2 Typical application of the APM200 (2)

Mini-BTS

485 Signal Cable -48V DC AC

Relay fiber/IF cables (up) Relay fiber/IF cables (down)

Transmission equipment

E1

apm200 system description

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