Queen Star Series High Frequency Online 1K-3KVA

· Large-screen LCD

· DSP Technology: The advanced DSP digital control technology enable UPS more stable performance.

· Active input power factor correction(PFC):Digitalized control of the PFC enable the UPS to keep input power factor above 0.99 to prevent possible electric grid pollution and meanwhile mostly save the cost.

· Widened range of input voltage and frequency:We intentionally widen the range of input factors to make sure the UPS can apply to various environment,which will effectively sustain the battery charging even in unstable power environment so that the service life of the UPS could be obviously prolonged.

· Zero power switch delay: When the utility power fails, UPS will automatically switch from AC mode to battery mode with no delay, which will ensures stable power supply of operating system.

· Adaptive Load Management: This technology allows the UPS to be set up at a fixed 50Hz or 60Hz output, while it also can intelligently monitors power usage and automatically sheds and reconnects loads in order to prevent generator overload.

· Sufficient Expansion Slots: The pre-allocated smart slots enable flexibility in choice of USB cards,AS400 cards,CMC monitoring cards,SNMP cards, RS485 cards and EMD environment monitoring cards.

· The load power factor is 0.9:it adapts the features of most current electric equipment and elevates the load-bearing capacity of the machines.

· Support the Generators: The wide range of input voltage and frequency can effectively separate the harmful electric wave produces by the generators and provide safe and reliable power supply.

· Environment Friendly: This UPS is eco-designed and manufactured to meet the China local pollution control requirement of Electronic Products, which means it will cause no harm to environment and human beings in normal usage.

Clean Power That Never Takes a Break

There's a fundamental difference between a UPS that reacts to power problems and one that prevents them from ever reaching your equipment. The Queen Star Series falls into the second category. It's a high frequency online double-conversion UPS, which means your gear never touches raw utility power. Ever. The incoming AC gets converted to DC, cleaned up, and then regenerated as perfect, pure sine wave AC. There's no transfer delay when the grid fails because there's no transfer. Your equipment was already running on the UPS the whole time.

If you're managing a small data closet, a network rack in a branch office, or any setup where uptime genuinely matters and power quality isn't negotiable, this architecture is the gold standard. The Queen Star Series packages it into a 1kVA to 3kVA frame that doesn't demand a dedicated electrical room.

Why Online Double-Conversion Matters

Line interactive UPS units are great for most desktop applications. They pass utility power straight through most of the time and step in with AVR or battery when things go wrong. But there's always a tiny gap during the switch—milliseconds, usually, but it's there. For most electronics, that gap is harmless. For sensitive lab instruments, precision medical devices, or network gear that really shouldn't reboot, it's a risk.

Online double-conversion eliminates that gap entirely. The inverter is always running. The output is always synthesized from DC. The grid could vanish mid-cycle and your equipment would never know. That's why data centers and hospitals use online UPS systems. The Queen Star Series brings that same architecture down to a size and price point that works for smaller installations.

DSP Digital Control: Precision Without Drift

Running an inverter continuously takes more than just good hardware. The Queen Star Series relies on DSP digital control to keep the output locked in. The digital signal processor samples voltage and current thousands of times per second, making tiny adjustments to keep the sine wave smooth, stable, and on frequency.

This matters in practice because the grid isn't always a perfect reference. Frequency can wander slightly. Waveforms can get distorted by heavy loads elsewhere in the building. The DSP ignores all of that and produces its own clean output based on an internal reference. Whether the grid is steady or acting up, the UPS behaves exactly the same.

Active Power Factor Correction: Drawing Power Cleanly

One of the more technically interesting features of the Queen Star Series is active power factor correction on the input side. The input power factor stays above 0.99, which is about as close to perfect as you can get in real-world electronics.

Why should you care about power factor? For a couple of practical reasons. A high power factor means the UPS draws current from the wall efficiently, in sync with the voltage waveform. Less energy is wasted as heat. Less reactive power bounces back and forth between the UPS and the utility. Your electrical bill reflects real power consumption, not phantom reactive loads.

It also means the UPS doesn't inject harmonic distortion back into the building's wiring. In a facility with lots of electronic loads, harmonics can add up and cause problems—overheated neutrals, nuisance breaker trips, interference with other equipment. The Queen Star Series plays nice with its electrical neighbors.

Wide Input Range: Save the Battery for When It Counts

Battery runtime is precious. Every time the UPS switches to battery for a minor voltage fluctuation, it's using up a finite resource—both in terms of immediate runtime and long-term cycle life. The Queen Star Series is designed with a deliberately wide input voltage and frequency window so it stays on utility power longer.

When the grid gets ugly—low voltage during a brownout, high voltage during a surge, frequency wandering outside normal bounds—the UPS keeps accepting that power and conditioning it through the double-conversion process. Only when the input goes genuinely outside the safe operating range does it fall back on the battery. That means fewer battery cycles, less wear, and more runtime available when you actually need it.

Zero Transfer Time: The Whole Point of Online

We touched on this earlier, but it's worth stating plainly because it's the defining feature of the architecture: there is zero transfer time when utility power fails. Not 4 milliseconds. Not 2. Zero.

The inverter is always connected to the load. The rectifier and charger are always feeding the DC bus. When the grid drops, nothing changes from the load's perspective except that the battery starts discharging instead of the rectifier providing DC. The inverter keeps humming along, uninterrupted.

For equipment that's sensitive to even momentary interruptions—servers that log power events, network switches that reboot on a glitch, storage arrays that don't take kindly to power cycling—this is non-negotiable protection.

Adaptive Load Management: Smart Power Distribution

The Queen Star Series includes adaptive load management capabilities that go beyond simple on/off control. You can lock the output frequency to 50Hz or 60Hz depending on your region's standard. The UPS also monitors power consumption in real time and can be configured to shed non-critical loads when capacity gets tight.

This becomes especially useful when running on generator power. Generators have limited capacity, and if the load steps up too quickly, you can get voltage and frequency sag. The Queen Star Series can intelligently drop lower-priority equipment to prevent the generator from overloading, then bring those loads back online when there's sufficient headroom. That's the kind of smart behavior that usually requires an external management system.

The Display: Actually Readable

A lot of UPS displays feel like an afterthought—tiny LCDs with cramped digits and cryptic icons that require the manual to decode. The Queen Star Series uses a large-screen LCD that's genuinely readable from a few feet away.

Load level, battery status, input voltage, output voltage, frequency—it's all laid out clearly. No squinting. No guessing which flashing icon means what. If you're standing in front of a rack, you can see the status at a glance and move on.

Communication: Whatever Your Setup Speaks

The Queen Star Series doesn't lock you into one monitoring protocol. It comes with multiple smart slots that can accommodate a range of communication cards: USB for direct PC connection, AS400 for legacy systems, RS485 for industrial control, SNMP for network monitoring, and even an EMD environment monitoring card that tracks temperature and humidity in the rack.

If your building management system or NMS can talk to a UPS, the Queen Star Series probably speaks the language. That kind of flexibility saves headaches when you're integrating the unit into an existing monitoring setup.

0.9 Load Power Factor: Rated Capacity You Can Actually Use

Older UPS designs often carry a 0.7 or 0.8 power factor rating. A 1000VA unit might only deliver 700 or 800 watts of real power. Modern IT equipment—servers, switches, storage—tends to have power factors much closer to 1.0 thanks to active PFC in their own power supplies.

The Queen Star Series is rated at 0.9 power factor, which means a 1000VA unit delivers 900 watts. That's a much better match for the gear you're actually plugging in. You're not paying for phantom capacity you can't use.

Generator Friendly

Backup generators don't produce the clean sine wave you get from the utility. Their output can be noisy, distorted, and variable—especially smaller portable units or older standby generators. Some UPS units don't handle that well. They reject generator power as unstable and stay on battery until they drain.

The Queen Star Series is designed to accept the wide range of input conditions that generators produce. It takes that rough power, runs it through the double-conversion process, and outputs clean, stable sine wave. Your equipment runs on perfect power regardless of what the generator is doing upstream.

Built Clean

The unit meets China's strict electronic product pollution control standards, which are among the more rigorous environmental regulations for electronic manufacturing. No hazardous materials in the construction. Safe for the people around it, safe for disposal at end of life. It's not the flashiest spec, but it matters if you're deploying equipment in environments where environmental compliance is part of the procurement criteria.

Where the Queen Star Series Fits

This is a UPS for people who can't afford to compromise on power quality. Small data closets where a server and switch stack need to stay up through anything. Network racks in branch offices where IT staff is remote and equipment needs to self-manage. Lab environments with sensitive instruments that react badly to power glitches. Retail or hospitality locations where POS systems and network gear are business-critical.

The 1kVA to 3kVA range covers a single rack of network and server gear comfortably. If you need more capacity, UPSEN offers larger online UPS units, but for the small-to-medium rack, this is the sweet spot.

The Bottom Line

The Queen Star Series High Frequency Online UPS doesn't cut corners. It regenerates clean power continuously, handles generators without complaint, communicates with whatever monitoring system you're running, and doesn't waste battery cycles on voltage fluctuations that the double-conversion process can handle. The large LCD makes status checks easy. The 0.9 power factor matches modern IT loads. And the wide input range means it stays online longer before ever touching the battery.

If you want a line interactive UPS, there are plenty of options. If you need true zero-transfer, always-on, double-conversion protection in a compact package, the Queen Star Series is where you start looking.