APM30 System Description

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2 APM30 Auxiliary Power Backup System System Description Document Version 01 ( ) Product Version V100R003 Huawei Technologies Co., Ltd. provides customers with comprehensive technical support and service. Please feel free to contact our local office or company headquarters. Huawei Technologies Co., Ltd. Address: Administration Building, Huawei Technologies Co., Ltd., Bantian, Longgang District, Shenzhen, P. R. China Postal Code: Website:

3 Copyright 2007 Huawei Technologies Co., Ltd. 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 Huawei Technologies Co., Ltd. Trademarks and other Huawei trademarks are the trademarks or registered trademarks of Huawei Technologies Co., Ltd. in the People s Republic of China and certain other countries. All other trademarks and trade names mentioned in this document are the property of their respective holders. Notice The information in this manual is subject to change without notice. Every effort has been made in the preparation of this manual to ensure accuracy of the contents, but all statements, information, and recommendations in this manual do not constitute the warranty of any kind, express or implied.

4 Contents 1 Introduction to the APM Purpose Positioning Features of the APM Functional Parts Installation Scenarios Environmental Adaptability Easy Maintenance Overview of the APM Appearance and Structure Benefits and Functions Physical Interfaces Extended Battery Cabinet of the APM Appearance and Structure of the Extended Battery Cabinet Functions of the Extended Battery Cabinet Typical Application of the APM APM30 Working with WCDMA Distributed Base Stations Power Backup with Built-in Batteries Power Backup with the Extended Battery Cabinet APM30 Working with GSM Mini Base Stations Power Backup Capacity Technical Specifications of the APM Electrical Specifications Engineering Specifications Commercial in Confidence i

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6 Figures Figure 3-1 APM Figure 3-2 Internal structure of the APM Figure 3-3 Extended battery cabinet of the APM Figure 3-4 Internal structure of the extended battery cabinet of the APM Figure 4-1 Typical application of the APM30 (1) Figure 4-2 Typical application of the APM30 (2) Figure 4-3 APM30 working with the GSM mini base station Commercial in Confidence iii

7 Tables Table 3-1 Functions of the APM Table 3-2 DC power distribution functions of the APM Table 3-3 External physical interfaces of the APM Table 4-1 Different types of APM30 battery groups Table 5-1 Electrical specifications of the APM Table 5-2 Engineering specifications of the APM Commercial in Confidence iv

8 1 Introduction to the APM Purpose Huawei APM30 is developed for easy power distribution of mini base stations and distributed base stations, for high adaptability of indoor transmission equipment to the adverse environment, and for power backup of mini base stations and distributed base stations. 1.2 Positioning The APM30 provides a comprehensive solution for distributed base stations and mini base stations in terms of the following aspects: Power distribution Lightning protection Transmission equipment installation Transmission cable layout DC power backup The rollout of the APM30 meets the requirement of fast network construction. Commercial in Confidence 1

9 2 Features of the APM Functional Parts The APM30 consists of the following functional parts: Rectifier Monitoring module Power distribution unit Lightning protection unit Temperature control unit Batteries The APM30 cabinet also provides space for installing the transmission equipment. With the functional parts, the APM30 performs the following functions: 48 V DC power supply Battery management Monitoring and communication of the power supply system Power distribution Lightning protection Temperature control Power backup Transmission equipment installation 2.2 Installation Scenarios The APM30 cabinet is small and light. It can be installed in the following scenarios: On a pole On a rooftop On the concrete floor On an overhead platform On a wall In addition, the external cables of the APM30 are simple and easy to install. Commercial in Confidence 2

10 2.3 Environmental Adaptability The APM30 is adaptable to the following environments: In structural design, the APM30 can protect itself from the damage caused by the following factors: Water Moisture Mould Corrosion Theft The open holes in the exterior of the APM30 cabinet help prevent the entry of foreign objects into the cabinet. The APM30 is highly adaptable to outdoor environments. The APM30 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 APM30 can work within a wide range of AC voltages from 176 V to 290 V (corresponding to the rated power of the rectifier). The APM30 has a good control of internal temperature and works within the temperature range 40 to Easy Maintenance The cables are led out from the bottom of the APM30 cabinet. You can replace faulty parts, maintain the external ports, and connect the cables from the front of the APM30. The rectifier and the monitoring module are hot-swappable. This facilitates the operation and maintenance of the APM30. Commercial in Confidence 3

11 3 Overview of the APM Appearance and Structure Figure 3-1 shows the APM30. Figure 3-1 APM30 Commercial in Confidence 4

12 Figure 3-2 shows the internal structure of the APM30. Figure 3-2 Internal structure of the APM30 1 Filler panel (1 U) 2 Power subrack (3 U) 3 DC PDU (2 U) 4 to 8 Filler panel (1 U) 9 Space for batteries (3 U) 3.2 Benefits and Functions The APM30 provides the distributed base stations and mini base stations with the following benefits: 48 V DC power Backup power of the batteries Space for installing the transmission equipment The APM30 performs the following functions: Battery management Monitoring and communication of the power system Commercial in Confidence 5

13 Lightning protection Temperature control Commercial in Confidence 6

14 Table 3-1 describes the functions of the APM30. Table 3-1 Functions of the APM30 Function Description Remarks Ensuring the temperature in the battery cabinet Supplying backup power through batteries Providing space for transmission equipment Providing a built-in rectifier Providing a built-in monitoring module Providing AC power distribution Protecting the power supply and the signal ports from lightning discharge In cold regions, an AC heater is required to ensure the normal operation of batteries and transmission equipment. The APM30 can be configured with 48 V 12 Ah, 48 V 24 Ah or 48 V 36 Ah built-in batteries to supply backup power to distributed base stations for a short period of time. The extended battery cabinet can be configured with a 48 V 50 Ah or 48 V 200 Ah built-in battery group to supply backup power to the batteries of distributed base stations or mini base stations for a relatively long period of time. The APM30 configured with a 48 V 12 Ah or 48 V 24 Ah built-in battery group can provide a standard 19-inch space of 5 U high for user equipment. When the APM30 is installed with 48 V 36 Ah built-in batteries, the 2-U-high space for transmission equipment is occupied by the batteries. When an extended battery cabinet is used, the APM30 has no built-in batteries, and thus it can provide a 7-U-high space for transmission equipment. The rectifier converts the input AC mains into 48 V DC power. The rectifier is hot-swappable. 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 and three dry contact alarm ports for remote control and attendance-free monitoring. The power distribution box in the APM30 converts the single-phase three-wire AC input of 200 V AC to 240 V and the dual live wire AC input of 110 V into two AC outputs. One output supplies power to the built-in power system after going through the 32 A AC bipolar MCB, and the other output supplies power to the AC heating board through the 10 A AC bipolar MCB. The APM30 provides the lightning protection circuit design for the alarm port, the communication port, and the built-in lightning protection module of the AC/DC power supply ports. The APM30 provides safe and reliable surge protection and inductive thunder protection. Optional Mandatory Commercial in Confidence 7

15 Function Description Remarks Dissipating heat Providing the grounding bar The breathable film and fans in the APM30 are separately installed for heat dissipation. Therefore, the APM30 can adapt to the variation of the ambient temperature. The grounding bus of the cabinet, the grounding cable of the surge protector, and the grounding cables of other equipment are connected to the grounding bar. Table 3-2 describes the DC power distribution functions of the APM30. Table 3-2 DC power distribution functions of the APM30 Application DC Power Supply Unit MCB Remarks Working with distributed base stations Four primary power outputs RRU Three 10 A MCBs When the APM30 supplies power to three RRUs, three 10 A MCBs control the three DC outputs respectively. Reserved One 50 A MCB Four secondary power outputs BBU Two 10 A MCBs When the APM30 can be configured with up to two RRUs, two 10 A MCBs control the two DC outputs respectively. Transmission equipment One 5 A MCB One 5 A MCB controls one DC output to supply power to the transmission equipment. Fan One 5 A MCB The APM30 provides one DC output and supplies power to two fans concurrently. Working with mini base stations Four primary power outputs BTS3006C BTS3002E Two 50 A MCBs Two 30 A MCBs The APM30 provides power supply and power backup for two BTS3006Cs. The APM30 provides power supply and power backup for two BTS3002Es. Four secondary power outputs Transmission equipment Two 10 A MCBs and one 5 A MCB Two 10 A and one 5 A MCBs control three DC outputs to supply power to the transmission equipment. Fan One 5 A MCB The APM30 provides one DC output and supplies power to two fans concurrently. Commercial in Confidence 8

16 3.3 Physical Interfaces Table 3-3 describes the external physical interfaces of the APM30. Table 3-3 External physical interfaces of the APM30 Physical Interface Quantity 220 V AC power input port One 220 V AC input port 48 V DC power output port There are up to four DC outputs for the RRU or the mini base station. Grounding port Outlet for the RS485 communication cable The grounding bar provides four grounding terminals. All the grounding nuts are M8 nuts. Outlet for the dry contact alarm cable Inlet/outlet for the optical cable or the E1 cable to the user equipment Inlet/outlet for the optical cable or the IF cable 3.4 Extended Battery Cabinet of the APM Appearance and Structure of the Extended Battery Cabinet The extended battery cabinet is similar to the APM30 in appearance. The APM30 can be stacked on the extended battery cabinet. Figure 3-3 shows the extended battery cabinet of the APM30. Commercial in Confidence 9

17 Figure 3-3 Extended battery cabinet of the APM30 Figure 3-4 shows the internal structure of the extended battery cabinet of the APM30. Figure 3-4 Internal structure of the extended battery cabinet of the APM Protective cover for the copper busbar 2 Cable hole for the AC power cable 3 Cable hole for the DC power cable 4 Cable hole for the signal cable 5 Side cable hole 6 Guide rail 7 Waterproof box Commercial in Confidence 10

18 3.4.2 Functions of the Extended Battery Cabinet The extended battery cabinet contains a group of 48 V 50 Ah, 48 V 100 Ah, or 48 V 200 Ah batteries, which are used with the APM30 to meet the power backup requirements of distributed base stations and mini base stations for a relatively long period of time. Commercial in Confidence 11

19 4 Typical Application of the APM APM30 Working with WCDMA Distributed Base Stations Power Backup with Built-in Batteries The built-in batteries of the APM30 are applied to the WCDMA distributed base stations, as shown in Figure 4-1. Figure 4-1 Typical application of the APM30 (1) APM30 RRUs 220 V AC Optical cable -48 V power cable The APM30 is applied to distributed base stations in a scheme of one BBU plus three RRUs: 1 BBU + 3 RRUs. The BBU3806 and transmission equipment can be installed in the APM30. The APM30 has a built-in power system to supply 48 V DC power to distributed base stations and transmission equipment. The system also charges the batteries in the APM30 cabinet. The transmission equipment in the APM30 transmits signals to distributed base stations. The BBU3806 installed in the APM30 processes baseband signals for distributed base stations. Commercial in Confidence 12

20 In the absence of mains, the built-in battery group of the APM30 supplies 48 V DC power to distributed base stations and transmission equipment. A group of 48 V 12 Ah, 48 V 24 Ah, and 48 V 36 Ah built-in batteries in the APM30 are actually used for power backup Power Backup with the Extended Battery Cabinet The extended battery cabinet of the APM30 is applied to the distributed base stations, such as RRUs, as shown in Figure 4-2. Figure 4-2 Typical application of the APM30 (2) APM30 RRUs Extended battery cabinet 220 V AC Optical cable -48 V power cable The APM30 is applied to distributed base stations in a scheme of one BBU plus three RRUs: 1 BBU + 3 RRUs. The BBU3806 and transmission equipment can be installed in the APM30. The APM30 has a built-in power system to supply 48 V DC power to distributed base stations and transmission equipment. The system also charges the batteries in the extended battery cabinet. The transmission equipment in the APM30 transmits signals to distributed base stations. The BBU3806 installed in the APM30 processes baseband signals for distributed base stations. In the absence of mains, the 48 V 50 Ah built-in battery group in the extended battery cabinet supplies 48 V DC power to distributed base stations and transmission equipment. Commercial in Confidence 13

21 4.2 APM30 Working with GSM Mini Base Stations The APM30 is applied to the GSM mini base stations such as BTS3006C and BTS3002E, as shown in Figure 4-3. Figure 4-3 APM30 working with the GSM mini base station APM30 Extended battery cabinet 220 V AC Optical cable -48 V power cable Mini base station The APM30 provides a space of 7 U high for the transmission equipment and has a built-in power system to supply 48 V DC power to mini base stations and transmission equipment. The system also charges the batteries in the extended battery cabinet. The transmission equipment in the APM30 transmits signals to mini base stations. In the absence of mains, the 48 V 50 Ah, 48 V 100 Ah or 48 V 200 Ah built-in battery group of the extended battery cabinet supplies 48 V DC power to mini base stations and transmission equipment. 4.3 Power Backup Capacity The APM30 and extended battery cabinet support the following types of battery groups: 48 V 12 Ah 48 V 24 Ah 48 V 36 Ah 48 V 50 Ah 48 V 100 Ah 48 V 200 Ah Commercial in Confidence 14

22 According to actual needs, you can use different types of battery groups for power backup, as shown in Table 4-1. Table 4-1 Different types of APM30 battery groups Application of the APM30 Type of Battery Group Applicable Power Backup Built-in batteries of the APM30 48 V 12 Ah 0 Ah to 12 Ah 48 V 24 Ah 12 Ah to 24 Ah 48 V 36 Ah 24 Ah to 36 Ah Extended battery cabinet of the APM30 48 V 50 Ah 36 Ah to 50 Ah 48 V 100 Ah 50 Ah to 100 Ah 48 V 200 Ah 100 Ah to 200 Ah Commercial in Confidence 15

23 5 Technical Specifications of the APM Electrical Specifications Table 5-1 lists the electrical specifications of the APM30. Table 5-1 Electrical specifications of the APM30 Item AC input Input voltage range Typical input voltage Frequency of input voltage Maximum input current Specification 176 V AC to 290 V AC 200 V AC to 240 V AC 45 Hz to 65 Hz 22 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) DC output Output voltage range Output current range Typical output voltage DC outputs 58 V DC to 44 V DC 0 A to 60 A 53.5 V DC The APM30 working with distributed base stations provides four primary power outputs and four secondary power outputs. The APM30 working with the BTS3006C provides two primary power outputs and four secondary power outputs. The APM30 working with the BTS3002E provides two primary power outputs and four secondary power outputs. Commercial in Confidence 16

24 Item Power Protection Lightning protection AC input power DC output power Internal heat consumption Input Output Lightning protection for AC input Lightning protection for DC output Lightning protection for signal input ports Specification 3855 W 3200 W 350 W Overvoltage protection: The system generates an alarm when the input voltage is higher than the AC overvoltage alarm threshold (280 V by default). Undervoltage protection: The system generates an alarm when the input voltage is lower than the AC undervoltage alarm threshold (180 V by default). Overvoltage protection: The system generates an alarm when the busbar voltage is higher than the DC overvoltage alarm threshold (58 V by default). Undervoltage protection: The system generates an alarm when the busbar voltage is lower than the DC overvoltage alarm threshold (45 V by default). The APM30 has other protection features such as overcurrent protection and short-circuit protection. For the APM30 working with WCDMA distributed base stations: Rated through-current capacity In (8/20 µs): 20 ka Maximum through-current capacity Imax (8/20 µs): 40 ka For the APM30 working with GSM mini base stations: Rated through-current capacity In (8/20 µs): 20 ka Maximum through-current capacity Imax (8/20 µs): 60 ka Differential mode (8/20 µs): 3 ka Common mode (8/20 µs): 5 ka 5.2 Engineering Specifications Table 5-2 lists the engineering specifications of the APM30. Commercial in Confidence 17

25 Table 5-2 Engineering specifications of the APM30 Item Weight (without batteries and transmission equipment) Cabinet dimensions without the base (W x H x D) Base dimensions (W x H x D) Space for the user equipment (W x H x D) Working environment Working temperature Direct sunlight intensity Relative humidity Altitude Specification < 55 kg 600 mm x 700 mm x 480 mm 600 mm x 200 mm x 480 mm Space for 48 V 12 Ah or 48 V 24 Ah built-in batteries: mm x mm x 400 mm (19 in. wide, 5 U high, and 400 mm deep) Space for 48 V 36 Ah batteries: mm x mm x 400 mm (19 in. wide, 2 U high, and 400 mm deep) Space reserved in an APM30 cabinet without built-in batteries: mm x mm x 400 mm (19 in. wide, 7 U high, and 400 mm deep) 40 to +45 When the ambient temperature is lower than 20, an AC heater is required W/m 2 0% RH to 100% RH < 4000 m The maximum working temperature decreases by 1 each time the altitude increases by 300 m from 2000 m. Dustproof and waterproof IP55 Annual failure rate of the rectifier < 1% Annual failure rate of the monitoring module < 0.5% Commercial in Confidence 18