| Model | 3C10KS | 3C15KS | 3C20KS |
| Rated Power | VA/W | 10kVA/7kW | 15kVA/10.5kW | 20kVA/14kW |
| Input | Nominal Voltage | 380VAC |
| VoltageRange | 304 ~ 478VAC |
| Phase | 3 phase (4 wires plus ground) |
| FrequencyRange | 46 ~ 54Hz |
| Power Factor | 0.95 |
| Connection | Hardwired |
| Output | Voltage | 220VAC±1%, Single phase |
| Frequency | 50Hz±0.1% (Batterymode) |
| Waveform | Sine Wave |
| Power factor | 0.7 |
| Voltage Distortion | £2% under linear load |
| Overload Capability | 105% ~ 130% for 10 min.,³130% for 1 min. |
| Current Crest Ratio | 3:1 max. |
| Battery | Type | Sealed, Maintenance free, Lead-Acid |
| Nominal DC Voltage | 240VDC |
| Back-up time (full load) | Depends on the capacity of the external battery capacity |
| Connection | ExternalBatterySocket | Hardwired |
| Transfer time | 0 ms |
| Maintenance Bypass Switch | Yes |
| LED indicators | Status | Load level/Battery level,Battery, Utility power, Inverter, Bypass, Overload, Fault |
| Audible alarm | Bypass | Alarm beeps every two minutes |
| Batterydischarge | Alarm beeps every four seconds, every second if battery low |
| Overload | Alarm beeps two for every second |
| Fault | Alarm beeps continuously |
| Acoustic noise | At 1 meter distance | £55 dBA | £60 dBA |
| Communications | DB-9 Port | RS232 serial interface |
| Intelligent Slot | Options: WebPower, As400 or WinPower CMC |
| ParallelPort | up to three units in parallel for power redundancy and load sharing |
| Environmental | Operating temperature | 0 ~ 40°C |
| Operating humidity | 20% ~ 90% non-condensing |
| Weight | Net (kg) | 38.5 | 55 |