The Voltrix S3K (Tower) and RS3K (Rack 2U) are 3 kVA / 2.7 kW high-frequency online double-conversion (VFI) UPS systems with a built-in maintenance-free VRLA battery (6×12V/7AH). With 0 ms transfer time, input power factor correction of 0.99 at full load and a wide 60~300V (half load) 176~300V (full load) input window, they protect servers, network equipment and control systems against outages, sags, surges and frequency variation.
Both form factors share identical electrical performance; choose Tower for desktop or floor placement, or the 2U Rack model for standard 19-inch cabinets. A long-backup external-battery variant (S3KL / RS3KL) is available separately.
Technical Specifications — S3K / RS3K — 3 kVA / 2.7 kW
| INPUT | |
|---|---|
| Topology | VFI Online Dbl. Conv. |
| Input Config | 1Φ L/N+PE |
| Nominal Input V | 110~127V or 220~240V |
| Input Range | 60~300V (half load) 176~300V (full load) |
| Input Freq. | 40 ~ 70 Hz |
| Input PF | 0.99 @ Full |
| OUTPUT | |
| Output Voltage | 230 VAC (220/240/208V) or 120 VAC |
| Volt. Regulation | ±1% |
| Freq (Sync Mode) | 46~54 Hz 57~63 Hz |
| Freq (Bat. Mode) | 50Hz±0.05 60Hz±0.05 |
| THDv Lin./Non-lin. | 2% / 6% |
| Waveform | Pure Sine |
| Transfer Line↔Bat | 0 ms |
| Transfer Inv↔Bypass | < 4 ms |
| EFFICIENCY | |
| AC → AC | 91% |
| ECO Mode | 96% |
| Battery Mode | 89% |
| BATTERY & CHARGER | |
| Battery Type | VRLA Lead Acid |
| Battery Config. | 6×12V/7AH (internal) |
| Float Charge V | 81.8 V |
| Backup @50% Load | ≥ 5 min |
| Recharge Time | ~5 h |
| Max Rech. Current | 1.5 A |
| Display / Comm. | LED/LCD RS232/USB |
| PHYSICAL | |
| Form Factor | Tower / Rack 2U |
| Tower W×H×L (mm) | 145×220×328 |
| Rack W×H×D (mm) | 438×88×350 |
| Net Weight (kg) | 21.6 |
| ENVIRONMENT | |
| Operating Temp. | 0~+40°C |
| Humidity | 5~97% RH Non-cond. |
Key Features
- Online double-conversion (VFI) topology — 0 ms transfer, pure sine wave output
- Input power factor 0.99 at full load — reduces wiring and energy costs
- Wide input range 60~300V (half load) 176~300V (full load), 40 ~ 70 Hz — generator compatible
- Maintenance-free VRLA battery, recharge ~5 h
- AC→AC efficiency 91%, ECO mode 96%
- LED/LCD display with RS232 + USB communication
Ordering Information
| Voltrix Model | Form Factor | Apparent / Active Power | Battery | Part Number |
|---|---|---|---|---|
| S3K | Tower | 3 kVA / 2.7 kW | Internal VRLA (6×12V/7AH) | VTX-S3K |
| RS3K | Rack 2U | 3 kVA / 2.7 kW | Internal VRLA (6×12V/7AH) | VTX-RS3K |
Downloads
Certifications & Warranty
Designed and manufactured under ISO 9001:2015. CE (EU Declaration of Conformity), IEC/EN 62040-1 (UPS Safety), IEC/EN 62040-2 (UPS EMC — Class C2), RoHS 2011/65/EU. 2-year UPS system warranty, return-to-base, parts and labour; 1-year VRLA battery warranty. 24/7 technical support with response within 4 hours.
Specifications subject to change without notice. Backup times are indicative and depend on load, temperature, battery age and discharge history. Voltrix is a registered brand of Heizka. All trademarks are property of their respective owners.
