1.Product application 

DDWD-U series power parallel UPS power supply products Application products for railway system, power system and carefully designed a new generation of intelligent UPS power supply to meet the requirements of high quality power supply, and suitable for all sensitive to power interference, need stable, reliable, clean, uninterrupted sine wave AC power supply system.

2.Product feature

·Adopting intelligent microcomputer CPU control technology, advanced control theory and mature and stable high-frequency inverter mode, it can quickly respond to changes in the external environment and provide uninterrupted and completely high-quality AC output in real time.
·Using imported high-power IGBT, the output is high-precision, has good load characteristics and excellent EMI/EMC indicators.
·Using advanced SPWM pulse width modulation technology, the output is a pure sine wave with stable frequency and voltage, filtered out noise and low distortion.
·1+1 parallel connection technology, low difference current sharing.
·The inverter outputs after passing through a power frequency transformer. It has strong overload capacity and impact resistance, and can suppress high-order harmonic components in the waveform.
·With self-start function after power-on, it is suitable for unattended places.
·It has rich LED/LCD status display and alarm signal display functions, and provides a complete and approachable human-machine operation interface.
·Provides RS485 communication interface and 6 normally open passive dry contact outputs. The standard RS485 communication interface supports real-time data communication function, and the monitoring software is used to monitor and manage the working condition of the inverter power supply in real time. By connecting an external SNMP adapter, the UPS power supply can be connected to the Internet to achieve the purpose of network monitoring and management.

3.Protective function
The WD-U series UPS power supply has complete protection functions. Once a fault listed in the table below occurs, the UPS power supply will enter the bypass state or shut down the output to ensure that the load is not damaged. At the same time, the UPS power supply itself is also protected.