Uninterruptible Power Supply (UPS)

Product Overview:

The LUD series industrial UPS is a new generation power supply specifically designed for power plants and substations. It features online operation and zero-delay transfer capabilities, making it ideal for applications requiring high voltage stability, such as power telecontrol, RTU, DCS systems, power carrier communication, monitoring systems, and emergency lighting equipment in critical areas such as power plants and substations.

LUD Series UPS for Power System Applications

When the mains supply is normal, the single-phase 220V AC (or three-phase 380V AC) is isolated, rectified and filtered to supply power to the inverter. In case of AC input power failure, the DC panel equipped in the power system will supply power to the inverter via the anti-parallel diode, and then supply power to the critical loads after output isolation. If the DC panel loses power, the system will still be powered by the AC input. If the inverter is overloaded or malfunctions, the static switch will switch to bypass power supply.

Technical Features:

• Premium Cabinet Design

  Elegant and spacious design

• Power Components

  Industrial frequency isolation transformer

  High-power Mitsubishi IGBT modules

  Dedicated Mitsubishi IGBT driver chips

  Significantly improved power supply reliability and impact resistance

• Zero Delay Conversion

  Zero delay between mains power and DC inverter switching

  Inverter bypass ≤4ms

• Complete Isolation

  Complete isolation between AC input, DC input and uninterrupted AC output

• Zero Delay Output

  Ensures uninterrupted output when AC input power fails

• Digital Control Technology

  DSP-based digital control

  Intelligent detection and monitoring functions

• High-Speed IGBT Inverter

  Drives the inverter at high speed

• Monitoring Interface

  Passive contacts and RS232/485 monitoring

• Performance Characteristics

  Short transient response time

  Low waveform distortion

  High inverter efficiency

  Stable output voltage

  Strong overload capacity

  Excellent anti-interference ability

• Protection Functions

• Overvoltage, undervoltage, overcurrent, short circuit, reverse connection protection

• User Interface

• Large LCD screen with Chinese operation and monitoring interface

Technical Parameters and Selection

Technical Parameters and Selection