High Capacity High Reliability 350A Rack Mount Telecom Rectifier Embedded Power System For Outdoor Communication Cabinet

1. Application

(1) Small scale program controlled exchangers

(2) Access network

(3) Transmission equipment

(4) Mobile communication

(5) Satellite communication ground station

(6) Microwave communication

2. Feature

(1) Adoption of active power factor compensation technology with factor ＞0.98

(2) Wide operating range of AC input voltage: 90～290Vac

(3) Operating temperature range: -25°C～+55°C

(4) Zero current/voltage switching tech with high efficiency ≥91%

(5) Lifecycle of battery prolonged by perfect battery management, including electrical charge/discharge management, battery temperature compensation, battery capacity test, reversal connection proof protection, low voltage protection etc.

(6) Hot-swappable

(7) Input over/under voltage protection

(8) Output over voltage protection

(9) Output over current protection

(10) Output short circuit protection

(11) Auto current sharing, parallel output

(12) Embedded mounting

3. System Configuration

The system consists of power distribution unit, rectifier module (from 1 set, up to 7 sets) and 1 monitoring module. The configuration is optional, as following table:

4. Operating Principle

AC power is first input AC-INPUT MCB and then feed into the rectifier module after lightning proof and filtering. AC-INPUT acts as protection to over load and short circuit to AC power. The user’s battery is connected to the DC output side through MCB BAT and KM2, and the circuit breaker provides disconnection control, over-load and short-circuit protection to the battery.

Under normal conditions, every parameter of rectifier modules and power distribution unit are all under control of the monitoring module, operating according to the pre-set parameter or user’s commands. If AC mains faults, the battery will power to the system. With the battery discharge, the terminal voltage of the battery starts to descend. When battery voltage is under -47V±0.5V, the monitoring module sends DC under voltage alarm signal and when battery voltage is under -46.0V±0.5V (adjustable), the KM1cuts off non-priority loads and retaining power to priority loads. If battery voltage drops to -43.0V±0.5V (adjustable), the KM2 will cut off output of priority loads and then the power system will stop working. If the external AC mains recovers, the system will normally work again. (All above monitoring data are system default values and can be reset by user).
Except for battery over-discharge protection, battery or load over-temperature protection is prohibitive under default, users can send command to activate or inactivate according to the demanding.

5. System Properties

6. Mechanical Properties

7. Electrical Connection

Chassis connects with external electric through system interface board. As shown in figure below:

MCB descriptions:

1. Single-phase AC input MCB and rail type connector;

2. AC SPD;

3. LOAD (-): system load- (7 MCBs,LVBD);

4. LOAD (+): system load+ and BAT (+): battery+ (copper bar at front of system)

5. LOAD (-): system load- (12 MCBs,LVLD);

6. BAT (-): battery- (fuse)

8. Product Pictures

Introduction

Tianjin Estel Electronic Science and Technology Co., Ltd (ESTEL(GUANGDONG) TECHNOLOGY CO., LTD), located in China, is a professional supplier of integrated outdoor telecom cabinet and temperature control solutions for outdoor telecom base station. As a science and technology innovative company, we engage in the R&D, manufacture, and sales of telecommunication equipment. Estel has a well-established team of technical and management experts who can meet customers’ specific needs accurately.

The base station integrated solutions and products include outdoor integrated telecom equipment cabinet, battery cabinet, RRU cabinet, power supply cabinet, environment monitoring system, TEC peltier air conditioner, AC220V compressor air conditioner, DC48V variable frequency air conditioner, heat exchanger, rectifier, UPS, embedded telecom power system etc. All the above solutions and products can be custom made.

Our products and solutions have been deployed all over China. Our main domestic customers are China Telecom, China Mobile, China Unicom, State Grid, Shenzhen / Beijing Metro and Huawei / ZTE etc. In addition, our products have been exported to Europe, North America, South America, Central America, Southeast Asia, Africa, Australia, Mid East countries, etc.

“ Customers First, Quality First ” is always our principle. We have attained many certifications, such as ISO9001, ISO14001, OHSAS18001, CE, UL, FCC etc. AS a telecom integrated solutions / energy saving system integrator in China, We have strong advantages in technology competitiveness, management competitiveness ,service competitiveness and price competitiveness. Through many years of experiences in design, production and implementation of different projects around the world, we have gained great reputation. Relying on professional technique and strict quality control, we will continuously offer high cost-effective products and solutions to our respectable customers globally. We will always try our best to meet customers’ need and requirement.

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