RS-Li Series High Frequency Online UPS 1K-3KVA

●Zero Transfer Time

True Double Conversion Online UPS,provide most comprehensive protect mission critical equipment from wide range power quality issues

●DSP Digital Control Based

Advance DSP base digital control bring high performance of high input Power factor, low distortion, supply the load with perfect sine wave AC power supply

●Li-ion Battery Powered

Provide up to 3x backup time in50% dimension, comparing with regular Lead-acid UPS product

●Li-ion Battery Charger

Constant current, Constant voltage,Floating, Tum-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 90V~300V,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

●Genset Compatible

Capable of work with wide range of Genset, isolate fluctuation and noise from Genset, provide stable and clean power supply to the user equipment.

●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.

Lithium Power That Doesn't Need a Cleanroom

Not every site needs a UPS that can swallow a 60-volt brownout without blinking. If your mains voltage rarely dips below 90V, the RS-Li gives you all the benefits of lithium-ion—smaller footprint, longer runtime, thousands of cycles—without the extra engineering cost of the ultra-low-voltage LV variant. But "standard input range" doesn't mean fragile. This is still an RS-series unit, built to shrug off heat, dust, and the kind of rough handling that would send an ordinary office UPS to an early grave.

True Online. Always.

The RS-Li is a genuine double-conversion online UPS. The inverter never stops. AC comes in, gets rectified to DC, filtered, and rebuilt into a clean sine wave. When the grid fails, there's no transfer time—the battery seamlessly takes over the DC bus. Your servers, switches, or security DVRs won't log a single power event.

A DSP digital controller keeps everything locked tight. Output voltage, frequency, waveform—all regulated thousands of times per second. Input power factor sits above 0.99, so the UPS pulls current cleanly from the wall without dumping harmonics back onto the building's wiring. Your facilities electrician won't be cursing your name.

Lithium That Earns Its Keep

Inside the chassis, you'll find a lithium-ion battery pack, not a pair of lead-acid bricks. Compared to a lead-acid UPS of the same rating, the RS-Li gives you up to three times the runtime in roughly half the space. A 1.5kVA unit that used to weigh 15kg and live on the floor can now be tucked onto a shelf or mounted out of sight. And because lithium cells are good for thousands of charge-discharge cycles, you're not pencilling in a battery swap every two or three years. Lower total cost, fewer headaches.

The charger is purpose-built for lithium. It follows a four-stage profile—constant current, constant voltage, float, turn‑off—that avoids the overcharging and trickle-charge degradation that plagues lead-acid designs. If you're using a custom battery pack, the charging logic can be adjusted to match. No rigid, one-size-fits-all curve.

Input Window That Covers the Real World

The input voltage range spans 90V to 300V, and the frequency window is 40 to 70Hz. That's wide enough to soak up all the typical power gremlins: brownouts that sag to 95V, swells that hit 280V, and the voltage wobbles that come with generator start-up. The UPS stays on utility power longer, preserving battery life for genuine blackouts. And it's generator-compatible out of the box—no sync issues, no constant switching between battery and bypass while the genset stabilises.

Output That Matches Your Loads

Output power factor is 0.9. A 1000VA unit delivers 900 watts. That's a proper match for modern IT gear with active PFC power supplies. Frequency auto-senses 50 or 60Hz, and output voltage is selectable, so you can deploy the same unit across different regional standards without jumpers or manual tweaks. The inverter has the headroom to handle mixed loads: servers, network gear, point-of-sale terminals, and even some industrial sensors or small motor-driven devices.

The "RS" Means It's Tougher Than It Looks

This is where the series earns its Rugged label. Pop the lid and you'll find an FR4 glass fiber double-sided PCB—not a cheap phenolic board that warps with heat. Components are laid out with large spans to handle vibration and thermal cycling without cracking solder joints. The ventilation paths are designed to move air efficiently while keeping dust accumulation to a minimum. And the whole board gets a conformal coating, sealing out moisture and the kind of mild corrosive gunk that builds up in unconditioned closets.

It's not just an office UPS with a darker paint job. It's built to keep running in a dusty workshop, a warm retail kiosk, or a telecom hut where the air conditioning is more of a wish than a guarantee.

Open for Integration

The controller inside is powerful, and we keep the architecture flexible. If you need the UPS to talk to a building management system, an industrial controller, or a custom supervisory platform, that's usually possible. System integrators appreciate not having to work around a sealed black box.

Where It Fits

The RS-Li slots into places where lithium's footprint and lifespan are a clear advantage, but the grid isn't so bad that you need the 60V tolerance of the LV model. Common deployments:

`Small server rooms and IT closets in office buildings

`Network cabinets in retail stores and restaurants

`Light industrial control panels and automation cells

`Medical carts and diagnostic stations

`Security systems with DVRs and PoE switches

If your utility power mostly behaves itself—brownouts stay above 90V—the RS-Li gives you the online protection, lithium longevity, and rugged build without the extra cost of extreme low-voltage engineering. It's the practical pick for places that aren't climate-controlled data halls, but also aren't at the end of a collapsing distribution line.

Bottom Line

The RS-Li High Frequency Online UPS delivers true double-conversion protection and lithium-ion efficiency in a package that's tougher than your average UPS. It's smaller, runs longer, and lasts more cycles than lead-acid alternatives, and it's built to survive where the air isn't perfectly filtered. If your grid doesn't regularly hit rock bottom but your uptime expectations are high, this is the unit that fits.