| ITEM | MODEL | C6K/C6KS | C10K/C10kS | C15KS | C20KS | 
| Capacity | VA / Watts | 6KVA / 4.2KW | 10KVA / 7KW | 15KVA / 10.5KW | 20KVA / 14KW | 
| Input | Normal voltage | 220VAC | 
| 220V Voltage range | 176-276V for 240VDC | 
| Frequency range | 40.5~55Hz | 
| Voltage range | 220VAC+-1% | 
| Output | Frequency range | 50Hz/60Hz+-0.5% (Battery mode) | 
| Wave form | Pure Sine Wave | 
| Transfer between AC mode and battery mode | 0 ms | 
| Transfer between AC mode and bypass mode | "<1ms" | 
| Distortion(Full Load)linear load | < 3% | 
| Degree of distortion(Ful l Load)nonlinearload | < 5% | 
| Overload capacity | 105%~130% 10min, >130% 1min, >150% 200ms | 
| Load peak ratio | 3:1(max) | 
| Battery for C6K/10K | Type | Maintenance free valve regulated lead acid (VRLA) battery | 
| Battery voltage | 240VDC | 240VDC | \ | \ | 
| Battery number(standard type) | 20*12V*7AH or 16*12V*7AH | 20*12V*7AH or 16*12V*7AH | \ | \ | 
| Backup time (Full load) | 8Mins | 8Mins | \ | \ | 
| Backup time (Half load) | 24Mins | 24Mins | \ | \ | 
| Recharge time | 90%capacity after 8 hrs charging | 
| Battery for long backup type | C6KS/10KS/15KS/20KS | 240VDC or 192VDC, External battery back. | 
| Display | LED | Load level/Battery level/Battery mode/Line mode/Inverter/B ypass/Over load/Fault | 
| Audible Alarm | Battery Mode | Beeping every 4 seconds (re-settable) and every second when battery | 
| Overload | Beeping twice every second | 
| Fault | Beeping Continuously | 
| Communications | RS-232 Interface | With monitoring software | 
| Working Environment | Surge protection | RJ-45 I/O port avai lable for network or Fax/Modem | 
| Working temperature | - 20��~40�� | 
| Humidity | 0-95% non-condensing | 
| Package dimension | WxDxH (mm) | 710*440*860 | 710*440*860 | 710*440*860 | 710*440*860 | 
| Package size | WxDxH (mm) | 710*440*960 | 710*440*960 | 710*440*960 | 710*440*960 | 
| Package weight | Gross weight(Kg) | 93/44 | 101/48 | 65 | 65 | 
|  | REMARK | C*k --- Standard Type, C*Ks---- Long Time Type |