The new series is designed to protect gas boilers, server equipment, video surveillance systems, and any other sensitive devices requiring a pure sine wave and instantaneous transfer to backup power.
Double Conversion Technology — The Foundation of Reliability
All models in the lineup belong to the Online UPS type (double conversion). This means the device continuously converts incoming AC power to DC, and then back to AC with ideal characteristics. This approach provides several key advantages:
- Total suppression of all mains interference — surges, spikes, sags, and high-frequency noise;
- Zero transfer time to batteries during mains power outages;
- Pure sine wave output — ensures flawless operation of equipment with switched-mode power supplies, electric motors, and transformers.
The output power factor of all models is 1.0, meaning the apparent power in volt-amperes equals the active power in watts. Consequently, the rated 1000, 2000, or 3000 VA correspond to 1000, 2000, or 3000 W of real load capacity.
Silent Operation as Standard
One of the primary advantages of the series is its low noise level. Stark Country engineers managed to achieve a level of 33–35 dB across all operating modes. For comparison:
- 20 dB — rustling leaves or a quiet whisper;
- 40 dB — a quiet conversation;
Operating with a noise level of 33–35 dB, the device is virtually silent indoors.
This achievement is made possible by intelligent fan control. The cooling fans do not run continuously at full speed; instead, they dynamically adjust their rotation speed strictly based on actual demand, determined by internal enclosure temperature, operating mode, and current load. This makes the UPS practically unnoticeable in residential areas, small offices, or home server setups.
Versatile Features for Any Scenario
All models in the series come equipped with a comprehensive set of features that expand their capabilities:
- "Cold Start" — the UPS can be turned on and power loads even in the total absence of mains electricity, relying solely on battery energy.
- Auto Restart — if the UPS shuts down after fully discharging its batteries, it will automatically turn on and resume supplying power as soon as mains power is restored.
- ECO Mode — when the utility grid is stable, the UPS routes power directly, bypassing the inverter. This reduces energy losses, saves electricity, and increases the overall system efficiency.
Additionally, all models support connecting external battery packs (EBM), enabling users to scale runtime several-fold depending on facility requirements.
1000 ONLINE ONE and 1000 ONLINE ONE RT Family
The base line rated at 1000 VA / 1000 W is represented by the 1000 ONLINE ONE 3HRV and its rackmount version, the 1000 ONLINE ONE RT 3HRV.
General Specifications
- DC bus voltage — 36 V;
- Three series-connected internal batteries;
- Maximum charging current — 12 A (adjustable in 1 A increments);
- Support for external battery modules with capacity up to 230 Ah;
- Efficiency in line mode — ≥95.5%;
- Includes quick-connect battery cables (Quickstart Kit).
Differences Between Versions
- Tower — two Schuko output sockets, compact dimensions of 145×224×354 mm, weight 13.2 kg;
- Rack/Tower — four IEC C13 outlets, 2U enclosure (440×379×86 mm), weight 15.4 kg, supports both 19-inch rack installation and vertical tower deployment.
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Models with High-Power Charger: 1000 ONLINE ONE (20A) and 1000 ONLINE ONE RT (20A)
For applications demanding fast battery replenishment or operation with high-capacity external battery banks, dedicated "20A" variants were developed: 1000 ONLINE ONE (20A) 2HRV and its rackmount counterpart 1000 ONLINE ONE RT (20A) 2HRV.
Key Differences
- Charging current — adjustable from 1 to 20 A;
- DC bus voltage — 24 V (two batteries in series);
- External battery capacity — up to 390 Ah, facilitating systems with extensive backup autonomy;
- Three-level inverter topology.
Outlet Configuration
- Tower version — three Schuko outlets, weight 9.6 kg, dimensions 145×354×224 mm;
- Rackmount version — eight IEC C13 outlets, 2U enclosure, weight 13.3 kg.
These models are suited for environments where frequent and deep discharge cycles require rapid battery bank recharging.
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Flagship Solutions: 2000 ONLINE ONE (20A) and 3000 ONLINE ONE RT (20A)
The higher-end models in the series are built for demanding workloads — 2000 and 3000 VA with equivalent active power ratings in watts.
2000 ONLINE ONE (20A) 4HRV and 2000 ONLINE ONE RT (20A) 4HRV Models
- DC bus voltage — 48 V (four batteries);
- Charging current — adjustable 1–20 A;
- External battery capacity — up to 390 Ah;
- Efficiency in line mode — ≥94%;
- Tower version — three Schuko outlets, weight 16 kg, dimensions 145×405×224 mm;
- Rackmount version — combined output: one IEC C19 outlet (for high-power loads) and eight IEC C13 outlets (for peripherals), weight 19.5 kg, 2U enclosure.
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Lineup Flagship — 3000 ONLINE ONE RT (20A) 6HRV
- Rated power — 3000 VA / 3000 W;
- DC bus voltage — 72 V (six batteries);
- Charging current — adjustable 1–20 A;
- Input connector — IEC C20 (requires a dedicated power feed);
- Output — one IEC C19 outlet and eight IEC C13 outlets;
- Form factor — versatile Rack/Tower, 2U, dimensions 440×568×86 mm, weight 26.3 kg.
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This model is positioned as a professional solution for server racks, industrial production lines, and facilities sensitive to power quality.
Remote Monitoring and Management Capabilities
The latest models feature an intelligent slot for optional expansion cards. Available options include:
- SNMP+WiFi card — integration into corporate infrastructure monitoring and management systems, as well as remote control via smartphone or web interface;
- AS400 card — communication with industrial PLC controllers and automation systems.
This enables full remote tracking of grid parameters, battery status, load levels, and outlet control without requiring physical access to the UPS.
Fresh Batteries and Hot-Swappable Design
Stark Country's approach to battery supply is worth highlighting: batteries are installed into the UPS immediately prior to dispatch to the customer. This prevents prolonged warehouse storage and ensures maximum battery health and longevity throughout their rated service life.
Furthermore, models with the RT designation feature hot-swappable batteries, allowing battery replacement without cutting power to connected loads. This is critical in mission-critical environments where downtime is unacceptable: server rooms, medical centers, security installations, and continuous manufacturing facilities.
Overload Capacity and Protection
The Online series UPS units deliver high overload resilience during mains operation:
- 30 minutes — at load levels up to 110%;
- 10 minutes — at load levels up to 130%;
- 30 seconds — at load levels up to 150%;
- 200 milliseconds — at load levels exceeding 150%.
This provides robust protection against momentary load surges and inrush currents, enhancing overall power supply reliability.
Summary
The new Stark Country ONLINE INTERNAL BATTERY series is a versatile solution for home and business environments, combining silent operation, energy efficiency, flexible runtime scalability, and smart management. The products are already available through authorized distributors and major retail chains. Explore all UPS models in this series on the brand's official website.