300A Sub-rack Power Supply with Power Distribution and Battery Monitory Fuction

1. ET48300-005 System Configuration Description

ET48300-005 sub-rack power supply 5U height compact design to meet critic

alapplication needs of fiber and microwave transmission, access device,

switch. The system maximum power is 300A, with AC/battery/load MCBs.

The cables are front accessing with MCB and busbar

Sub-rack power supplies are specifically designed to provide power to equipment within a sub-rack or subunit of a larger system.

These power supplies are commonly used in telecommunications, networking, and data center applications where modular equipment is housed in sub-racks.

Key features of sub-rack power supplies may include:

Modular design to fit into standard sub-rack configurations
High efficiency to minimize power consumption and heat generation
Multiple output channels to supply power to different components within the sub-rack
Hot-swappable or hot-pluggable modules for easy maintenance and upgrades
Remote monitoring and management capabilities for enhanced control and troubleshooting
Overcurrent, overvoltage, and short circuit protection to ensure the safety of connected equipment
Compatibility with various input voltage ranges to adapt to different power sources
Overall, sub-rack power supplies play a critical role in providing reliable and efficient power distribution within subunits of larger systems.

ET48300-005 consists of distribution unit, rectifier module, conversion module, monitoring module. The configuration is optional, as table below:

2. Sub-rack Power Supply Quick Details:

3. Sub-rack Power Supply Configuration

Telecom rectifier systems are crucial components in telecommunications infrastructure, providing power conversion and management for reliable operation.

These systems typically include rectifiers, controllers, batteries, and various communication ports to ensure uninterrupted power supply to critical equipment.

Key features of a typical telecom rectifier system may include:

Rectifiers for converting AC power to DC power efficiently

Battery management systems to monitor and maintain battery health Communication ports such as RS485, internet ports, dry contacts for networking and remote monitoring

Hot-swappable components for easy maintenance and minimal downtime

Wide input voltage range to adapt to fluctuating power grid conditions

Compact design for space-saving installations in telecom environments Overall, telecom rectifier systems play a vital role in ensuring continuous and reliable power supply to telecom infrastructure, supporting seamless communication services.

Two operating methods:

(1) AC input: Startup rectifier module after AC powered-on, outputs -48Vdc, at the same time charge the battery and power the conversion module, conversion module outputs 220Vac.

Under normal conditions, the parameters of rectifier module and distribution unit are all under controll of the monitoring module, operating according to the preset parameters or user’s commands. If AC mains fault, the battery will power to the system, and continue outputing - 48 VDC and 220 vac, with the discharge of the battery, the voltage of the battery starts to descend, when the voltage is under 43.2 V + / - 0.5 V, the monitoring module send battery under-voltage signal and close the load output directly, then the power system will stop working. When external AC mains recovers, the system will normally work again. (All above monitoring data are system default values and can be reset by user)

(2) -48V input: No AC current or no AC be connected, access external power -48V to -48V load port, startup monitoring and conversion module, 220Vac output.

Temperature compensation function is on by default, which can be activated or forbiddened by user’s command if necessary. Operation temperature ≥55℃, the power output of the power supply will be linearly reduced (@65℃,output power will be 1300W).

4. Application

(1) Integration access

(2) Indoor distribution and extension system

(3) Mobile station and extension coverage system

(4) WLAN

(5) Satellite communication ground station and microwave communication station

(6) Weak current distribution room

(7) Other AC/DC uninterruptible power system

5. Sub-rack Power Supply Pictures

6. Packing and Shipping