Power Electronic Design and Manufacturing
- SDNU - System for Remote Monitoring & Control of Power Electronic Devices
- SNN12 - Power Supply System 54 Vdc / 3 x 7,5 A
- NN301/48 Vdc - Small DC Power Supply System
- DC UPS - Uninterruptible Power Supply with DC Output Voltage 300 Vdc
- AKUP-110 - Hot-Swap Constant Current/Power Battery Load
- PA - Battery Charger
- Converters
- SF25 - Phase Selector
- Laboratory Power Supplies and Desks
NN301
Small DC Power Supply System
- 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