1. Nominal Power Capacity: Volt-Amps/Watts(VA/W) 6000VA/4200W 10000VA/7000W . 2. Input Nominal Voltage (Single): 220Vac Voltage Range: 176-300Vac Frequency Range: 46.5-55Hz Power Factor: í¦0.95 í¦0.97. 3. Output Voltage Range: 220Ví+ 2% Frequency Synchronized: 46.5-55Hz or 50Hzí+ 0.2Hz(Line mode)50Hz0.2Hz(Battery mode) Wave-form: Sinewave Distortion: í_3%(full linear load) í_4%(full linear load) Overload Capability: 108%-150% inverter mode for 10 minutes í¦130% by pass mode for 1 minute. 4. Crest Ratio: 3: 01 5. Battery Type: Sealecd Lead -Acid, Maintenance Free Capacity: 12V/7AH*20PCS 12V/7AH*40PCS 6. Transfer time: 0ms; 2.5ms typical from inverter to bypass and vice versa 7. Battery mode: Alarm beeps every four seconds, every second if battery low Overload: Alarm beeps two for every second Fault: Alarm beeps continuously 8. Acoustic Noise: At 1 meter distance 45dBA 50dBA 9. Communications: DB-9 Connector RS232 Serial Interface; Power monitoring and unattended systems shutdown via software 10. Applications: Servers Data-Center, Critical network, Sensitive electronics equipment, Telecom. 705*435*950mm Foams,cartons and Palet.