Dual input Telecom power supply is a Rectifier system that supports two independent power inputs. 

Through an intelligent switching mechanism, it ensures that communication equipment can continue to operate 

even in the event of a power failure on either side, making it suitable for scenarios that require high reliability of 

power supply. Its core technologies and applications are as follows:

一、 Rectifier System structure and working principle

Dual input design

Support AC and HVDC or two independent AC power inputs

The first distribution unit is connected to the main power source (such as mains power), and the second distribution unit 

is connected to the backup power source (such as a generator or DC battery pack). The two power sources are 

independently connected to the Rectifier system through the distribution unit.

Rectifier System Intelligent switching mechanism

Real time monitoring of controller: The main controller continuously detects the voltage and frequency parameters 

of the two power sources, and triggers the switching logic when the main power source is abnormal

 (power outage/voltage fluctuation)

First disconnect and then close operation: The switching circuit includes N interlocking switching units to ensure 

that the faulty power supply is disconnected first, and then the backup power supply is connected to avoid short 

circuits between the two power supplies

Seamless switching capability: The switching process is completed in milliseconds, ensuring zero interruption of 

power supply for loads such as servers and base station equipment.

二. Rectifier System Typical application scenarios

Communication infrastructure

Outdoor communication cabinet: Dealing with the risk of power interruption in harsh environments through dual inputs

Data center server cluster: Ensure redundant power supply for core equipment

Industrial and transportation sectors

Rail transit control system: dual power redundancy to avoid accidents caused by unexpected power outages

Electric bus power supply: 3000W dual input module provides stable DC power for onboard equipment (lighting/battery charging)

Emergency support scenario

Key facilities such as hospital ICU and fire protection system rely on dual power switching to ensure the continuous 

operation of life support equipment

三. Rectifier System Operations and Intelligence

The Telecom system is equipped with RS485/MODBUS/SNMP communication interfaces, supporting remote monitoring of 

power status and fault alarms, achieving unmanned operation

Operations personnel can obtain real-time power status information from relay outputs through the SCADA system, 

quickly locate single power faults (such as red light alarms), and intervene.

Dual input communication power supply has become the core power supply solution for modern communication, 

industry, and public facilities by balancing cost and reliability through hardware redundancy and intelligent control. 

Its technological evolution focuses on higher power density, faster switching speed, and deep intelligent management