KELONG High-Frequency IGBT Rectifier Models, featuring Ti28377DSP+FPGA digital control and T-type three-level conversion technology, the KR(/B)33 series ensures high-quality power supply for loads in any data processing or industrial field, particularly suitable for protecting critical loads. VFI SS 11 (Voltage, Frequency Independent) complies with IEC EN62040-3. This series incorporates new configurations, including IGBT rectifiers ensuring sine wave input currents to replace traditional thyristor rectifiers. Additionally, products of 300kVA and above are compatible with isolation transformers, providing complete electrical isolation of output and input, thereby completely avoiding the impact of grid anomalies on load equipment at the input end.

● Robust grid adaptability

Wide AC input voltage range, adaptable to different electrical grid environments

Avoid frequent switching between city power and battery to extend the service life of the battery.

Intelligent generator control for enhanced compatibility in generator configuration and control.

Soft start design, compatible with generator set requirements

All internal circuit boards are treated with three layers of protective varnish, featuring high humidity and corrosion resistance for operation in harsh environments.

● Energy Efficiency Index Upgrade

Overall efficiency 97%, saving energy consumption (UPS self-heating and air conditioning energy consumption), reducing operating costs

Output power factor can reach 1, significantly enhancing load-bearing capacity, in line with the development trend of increased power factor in IT products.

When the quality of the local power supply is high, the ECO economic mode can be used to power the load, with the overall efficiency reaching 99% and significant energy-saving benefits.

3x2 redundant design

3-way power supply with backup; uninterrupted power supply in the event of any two-way interruption

2 power boards are redundant to each other; in the event of a failure in any one, the UPS can still operate normally.

● Green Power Energy-Saving Design

Utilizing T-shaped three-level conversion technology, it significantly enhances system operational efficiency, reduces installation and operation costs, while also providing high-reliability load protection.

Input power factor is close to unity power factor, enhancing energy utilization, reducing upfront distribution costs for UPS, and lowering customer investment costs.