• Compact uninterruptible dc power supply system - in one enclosure:
• Rectifier 230 Vac/48 Vdc, up to 175 W
• Battery Charger 220 Vac/40,5 — 56 Vdc, up to 125W
• Batteries 48 Vdc/12 Ah/17 Ah/24 Ah
• Low Voltage Disconnect block
• Optimal Charging of Batteries
• Each system is completely wired, charged and ready to go

Applications

• DC power supply system NN301 is designed for:
• Applications in which electronic equipment need to have reliable and permanent DC power supply regardless on main supply failure
• Equipment to be used in telecom, datacom, and network applications
• Equipment to be used in security and monitoring applications
• Typical Applications:
• Fiber Optic Networks
• Data communications
• PABX/ISDN
• Industrial
• Customer premises

System overview

• NN301 contains:
• Rectifier - DC/DC converter (MN175) providing DC output power to load
• Charger – DC/DC converter (MP125) providing battery charging
• Battery charging is independent of rectifier and move according to optimal charging characteristics given by battery manufacturer
• It works like current/voltage source (IU characteristics)
• System of semiconductor switches providing uninterruptible DC output power to load:
• Connecting load and batteries when ac power is loss (rectifier off)
• Assuring permanent power to load
• Control block:
• Controlling system of semiconductor switches mentioned above
• Detection of system failures – overload detection, loss of AC detection, battery damage

Data sheetsi (pdf): NN301 (Serbian), NN301 (English), NN301 (German)