The Santak inverters have been tailor-made for the telecommunication industry. Theycomply with the Chinese YD/T777-1999 standard called "the Inversion Equipmentfor Telecommunication" and have been awarded a network entry license by the Ministryof Information Industry. With 48V DC input, the inverters put out 220VAC sine wave power at extremely lownoise and high reliability. They are widely used with small and medium scale computer,data exchangers, telegraphic terminals, wireless paging equipment, micro-wavetelecommunication equipment, PBX, rear-side management systems, telephone distributionsystems, group exchange systems and tolling systems and other equipmentthat require stable and reliable sine wave power supply. Features: 1) Extremely low return noise and no disturbance to talking quality 2) Use-friendly interface, LED simulative display, LCD digital display and computerscreen display of inverter operation status 3) RS232 port, smart power management software, automatic file saving and shuttingdown at power abnormalities 4) Special charging system design for better protection of battery life 5) Short circuit, overload, overload, over voltage and low battery protection 6) Compatible with generators and suitable for harsh environment where power voltageis extremely unstable 7) With standard on-line structure (three ports) and can be used as UPS Models: G1000, G2000, G3000Specifications: 1) Capacity: 1KVA (800W), 2KVA (1400W), 3KVA (2100W)2) Output voltage: 220VAC(5% )3) Frequency: 50Hz(1% )4) Waveform: Sine wave (T. H. D) linear load 5) Efficiency: More or equal than 75%, more or equal than 80% 6) DC input voltage: 40VDC~57VDC7) Current/wide band noise: <10% 8) Current/return band noise: Less or equal than 0. 2% of the input current 9) AC input voltage: 220VAC(20% )10) Frequency: 50Hz(3% )11) Protection: High output voltage, battery low, overload, short circuit 12) LED display: Normal, inverter, load and battery's percentage 13) LCD display: Input and output voltage/frequency, battery voltage, Temperature 14) Communication interface: RS232 port15) Figuration display inverter status, normal, failure, battery capacity, Load, temperature, automatic file saving and computer shutdown Function 16) Noise: <45dB, <55dB17) Temperature: 0 ~ 40 C18) Humidity: