Sun Star Series LV High Frequency Online UPS

·Zero Transfer Time

True Double Conversion Online UPS(IEC62040-3:VFI-SS),providing the most comprehensive protection for mission-critical equipment from a wide range of power quality issues.

·3-level Inverter for the Best Loading Capability

3 level inverter topology,supports with extensive range of load,including half-wave rectifier load(blow dryer, Solenoid valves,Laser printer etc.),Induction motors load.

·High Efficiency

With up to 93%efficiency in double conversion online mode and 97%ECO mode.

·Li-ion Battery Powered

Provide up to 3x backup time in 50%dimension,comparing with regular Lead-acid UPS product

·Dry Contact Control Interface for BMS

Incorporated a Dry Contact interface for BMS-oriented control of charging and discharging based on in-depth BMS information.

·ModBUS interface with BMS

Incorporated a ModBUS(RS485)interface with BMS to achieve precise battery information (voltage/soc soh,

etc.)or rational UPS &battery pack behaviour coordination and backup time prediction.TheModBUS works with BMS Dry Contact as communication redundancy,avoiding the critical communication crashes caused by any

single fault.

·Li-ion Battery Charger

Constant current,Constant voltage,Floating,Turn-Off 4 state charger for Li-ion battery,open to customize the logical behavior for customer-specified battery pack

·Ultra Wide Input Mains Range

Strong compatible with ultra with electric environment,stay well with ultra wide range mains of 65V~145V, 40~70Hz,dramatically reduce battery discharge,prolong battery life.

·Best Loading Capability

Up to 0.9 Output Power Factor,50/60 Hz Automatically adapting,selectable voltage,perfectly match all kind of application

·DSP Digital Control Based

Advanced DSP-based digital control brings high performance of high input Power factor,low distortion,supplying the load with perfect sine wave AC power supply

·High Input Power Factor

Thanks to digital controlled PFC Technology,>0.99 input power factor,effectively avoid power pollution,save energy expense for customer

·Reliable Design

Made with strong Glass fiber base(FR4)double side PCB,company with large span component,greatly improve reliability in harsh environment,Well designed ventilation and conformal coating,avoid dust accumulation,improve resistant to corrosion.

·Open to Customization

Based on powerful controller and open architecture,the product is able to be customized to match need of integration of automatic system or intelligent supervisory system.

This is a true double-conversion online UPS—VFI-SS classification under IEC62040-3. That’s the highest level of protection, meaning your equipment is completely isolated from input power issues. Transfer time is zero. If you’re running mission-critical gear, that’s the baseline you want.

What makes this series different is the 3-level inverter topology. It handles loads that trip up many UPS units: half-wave rectifier loads like blow dryers or solenoid valves, induction motors, and laser printers. So if your setup includes a mix of sensitive electronics and equipment with tricky power draws, this one won’t flinch.

Efficiency is solid—93% in online mode, and if you switch to ECO mode, it jumps to 97%. But the real story here is the lithium-ion battery. Compared to a traditional lead-acid UPS with similar runtime, this one takes up about half the space and delivers up to three times the backup time. That’s a big deal when rack space is tight or runtime requirements are long.

There’s also deep integration with BMS (battery management system). You get both a dry contact interface and a ModBUS (RS485) interface. The dry contact handles high-level control—telling the UPS when to charge or discharge based on BMS status. ModBUS gives you precise battery data: voltage, state of charge, state of health, and even runtime prediction. And here’s the smart part—the two interfaces work as redundant communication paths. If one fails, the other keeps things running. No single point of failure.

The charger itself is a four-stage design (constant current, constant voltage, floating, turn-off) built specifically for lithium-ion. If you’re using a custom battery pack, the charging logic can be tuned to match.

Input range is wide: 65V to 145V, 40 to 70Hz. That means it stays on utility power longer and doesn’t drain the battery unnecessarily when the grid gets messy. Output power factor is 0.9, frequency auto-senses 50/60Hz, and voltage is selectable—so it fits a broad range of applications.

Inside, the build quality is serious. The main PCB uses FR4 glass fiber base with conformal coating. Components are spaced with large span to handle harsh environments better. Ventilation is well thought out to avoid dust buildup, and the coating adds corrosion resistance.

Because the controller is powerful and the architecture is open, customization is on the table. If you need it to integrate with an automatic control system or an intelligent supervisory system, that can be done.