1. DC POWER SUPPLY

2. Maeil Power Co.,Ltd is a one of leading supplier of switching power supply. The company design and manufacture quality products that satisfy customer needs and requirements. The design engineering staff utilizes the most advanced topology of switching power supply and control unit. Locate with this facility and the assembly, test, quality assurance, engineering design and technical services. Each department of Maeil power will make sure to make satisfaction of every customer. INTRODUCTION

3. 1. Module (Switching Power supply) 1) 48V 48V 100A, 50A, 30A, 25A, 15A 2) 24V 24V 100A, 50A, 30A 3) 12V 12V 120A 4) 5V 100A 5V 100A 2. System (Cubicle or sub-rack type) 1) 48V 15A ~ 48V 4800A 2) 24V 30A ~ 1200A PRODUCT

4. 1. High efficiency. 2. High Power Factor. 3. Very small size. 4. Low Noise. 5. Load shared Parallel operation for reliability of system. 6. Modular design. 7. Installed 19” Rack. FEATURES

5. 1. Telephone exchanges. 2. Mobile telephone facilities. 3. Microwave and satellite base-stations 4. Solar power systems 5. Emergency equipment 6. Repeater APPLICATION

6. Power Distribution Unit Power Distribution Rack Load Bank Fan Unit Surge Arrestor OTHER PRODUCT

7. PRODUCT INFORMATION 48V24V12V, 5V

8. Input - Voltage : 3 Φ 180VAC – 255VAC 330VAC – 450VAC - Frequency : 45 – 65Hz - Power Factor : >0.93 at 40% - 100% load - Efficiency : >92% at >60% load - Inrush Current : <4A Rectifier DC 48V 100A(1400A/ 4400A) Output - Current : Nominal 100A - Float : 48V - 58V - Equalize : 50V - 60V - Current Limit Range : 10 – 110A - Load Regulation :± 0.5% Compliances - EMC Emissions Conducted RF : CISPR 22 Radiated RF : CISPR 22 - EMC Immunity Conducted RF : IEC61000-4-6 Radiated RF : IEC61000-4-3 Size :483Wx88H(2U)x470D 567Wx1900Hx750D(System) Weight : 22kg/ 380kg(System) Noise - < 2mV RMS Psophometrically weighted - < 10mV RMS - < 100mV p-p Protection - Over-voltage shutdown - Over-temperature - Over-current Micro-processor Control System construction 1400A Master/ 1500A Slave rack Rectifier 48V100A 14(15)EA System Control Unit 1EA Major Features By Application MP481400 MP481500SL By Application Mobile base station Mobile telephone facilities Telephone exchangers Microwave satellite base station Energy equipment

9. Input - Voltage : 1 Φ 180VAC – 255VAC - Frequency : 45 – 65Hz - Power Factor : >0.98 at 40% - 100% load - Efficiency : >90% at >60% load - Inrush Current : <4A Rectifier DC 48V 50A(200A/ 450A/ 700A) Output - Current : Nominal 50A - Float : 48V - 58V - Equalize : 50V - 60V - Current Limit Range : 5 – 52A - Load Regulation :± 0.5% Compliances - EMC Emissions Conducted RF : CISPR 22 Radiated RF : CISPR 22 - EMC Immunity Conducted RF : IEC61000-4-6 Radiated RF : IEC61000-4-3 Switching Frequency PFC stage : 140KHz DC-DC stage : 200KHz Noise - < 2mV RMS Psophometrically weighted - < 10mV RMS - < 100mV p-p Protection - Over-voltage shutdown - Over-temperature - Over-current Micro-processor Control Size : 87Wx310Hx330D 567Wx1800Hx700D system Weight : 7kg Magazine size This unit magazine allows 5 module to fit side by side in a standard 19inch rack. Maximum Capacity:700A (14 Unit) Load sharing Better than ±5% of full scale with active current sharing from SCU

10. Voltage System voltage normally displayed on SCU alpha-numeric LCD display. Accuracy : ±1% Current Analog measurement accuracy ±1% at full load Status monitoring - Output current of Rectifier Unit - Temperature of heatsink Rectifier Unit Parameters Programmable - Rectifier Voltage(Float or Equalize) - Current Limit - High Voltage Alarm - Low Voltage Alarm - HVSD Reset Digital Voltage Control RS-232 Interface Micro-processor Control Supervisory Control Unit (For 50A)

11. Input - Voltage : 1 Φ 180VAC – 255VAC - Frequency : 45 – 65Hz - Power Factor : >0.98 at 40% - 100% load - Efficiency : >90% at >60% load - Inrush Current : <4A Rectifier DC 48V 25A (75A/ 125A/ 350A) Output - Current : Nominal 25A - Float : 48V - 58V - Equalize : 50V - 60V - Current Limit Range : 5 – 27A - Load Regulation :± 0.5% Compliances - EMC Emissions Conducted RF : CISPR 22 Radiated RF : CISPR 22 - EMC Immunity Conducted RF : IEC61000-4-6 Radiated RF : IEC61000-4-3 Switching Frequency PFC stage : 140KHz DC-DC stage : 200KHz Noise - < 2mV RMS Psophometrically weighted - < 10mV RMS - < 100mV p-p Protection - Over-voltage shutdown - Over-temperature - Over-current Micro-processor Control Size : 87Wx222H(5u)x330D 567Wx1800Hx700D system Weight : 6kg Magazine size This unit magazine allows 5 module to fit side by side in a standard 19inch rack. Maximum Capacity:350A (14 Unit) Load sharing Better than ±5% of full scale with active current sharing from SCU

12. Input - Voltage : Single Phase 180VAC – 255VAC - Frequency : 45 – 65Hz - Power Factor : >0.95 (above 40% Load) - Efficiency : >88% at >60% load - Inrush Current : <3A Output - Current : Nominal 25A - Voltage : 48V – 55V Protection - Over-voltage shutdown - Over-temperature - Over-current Cooling - Fan Cooling Size : 215W x 100H x 365D Rectifier DC 48V 25A(50A)

13. Input - Voltage : 1 Φ 95VAC – 255VAC - Frequency : 45 – 65Hz - Power Factor : >0.98 at 40% - 100% load - Efficiency : >88% at >60% load - Inrush Current : <4A Rectifier DC 48V 15A (45A/ 210A) Output - Current : Nominal 15A - Float : 48V - 58V - Equalize : 50V - 60V - Current Limit Range : 5 – 16A - Load Regulation :± 0.5% Compliances - EMC Emissions Conducted RF : CISPR 22 Radiated RF : CISPR 22 - EMC Immunity Conducted RF : IEC61000-4-6 Radiated RF : IEC61000-4-3 Switching Frequency PFC stage : 140KHz DC-DC stage : 200KHz Noise - < 2mV RMS Psophometrically weighted - < 10mV RMS - < 100mV p-p Protection - Over-voltage shutdown - Over-temperature - Over-current Micro-processor Control Size : 105Wx176H(4u)x368D 567Wx1800Hx700D system Weight :5kg Magazine size This unit magazine allows 5 module to fit side by side in a standard 19inch rack. Maximum Capacity:210A (14 Unit) Load sharing Better than ±5% of full scale with active current sharing from SCU

14. Voltage System voltage normally displayed on SCU alpha-numeric LCD display. Accuracy : ±1% Current Analog measurement accuracy ±1% at full load Status monitoring - Output current of Rectifier Unit - Temperature of heatsink Rectifier Unit Parameters Programmable - Rectifier Voltage(Float or Equalize) - Current Limit - High Voltage Alarm - Low Voltage Alarm - HVSD Reset External Digital Voltage Control Micro-processor Control Size : 105Wx 176H(4u)x 368D RS-232 Interface Supervisory Control Unit (For 25A/ 15A)

15. Input - Voltage : 1 Φ 95VAC – 255VAC - Frequency : 45 – 65Hz - Power Factor : >0.98 at 40% - 100% load - Efficiency : >88% at >60% load - Inrush Current : <4A Rectifier DC 48V 15A (30A) Output - Current : Nominal 15A - Float : 48V - 58V - Equalize : 50V - 60V - Current Limit Range :5 – 16A - Load Regulation :± 0.5% Compliances - EMC Emissions Conducted RF : CISPR 22 Radiated RF : CISPR 22 - EMC Immunity Conducted RF : IEC61000-4-6 Radiated RF : IEC61000-4-3 Switching Frequency PFC stage : 140KHz DC-DC stage : 200KHz Noise - < 2mV RMS Psophometrically weighted - < 10mV RMS - < 100mV p-p Protection - Over-voltage shutdown - Over-temperature - Over-current - LVDS (Low Voltage Disconnect Switch) for Battery Micro-processor Control Size : 105Wx176H(4u)x368D 567Wx1800Hx700D system Weight :5kg Magazine size This unit magazine allows 5 module to fit side by side in a standard 19inch rack. Maximum Capacity:30A Battery in side Load sharing Better than ±5% of full scale with active current sharing from SCU

16. Input - Voltage : 3 Φ 4w 380VAC or 1 Φ 180VAC – 255VAC - Frequency : 45 – 65Hz - Power Factor : >0.98 at 40% - 100% load - Efficiency : >88% at >60% load - Inrush Current : <4A Rectifier DC 24V 100A(300A/600A/900A/1200A) Output - Current : Nominal 100A - Float : 24V - 29V - Equalize : 25V - 30V - Current Limit Range : 10 – 110A - Load Regulation :± 0.5% Compliances - EMC Emissions Conducted RF : CISPR 22 Radiated RF : CISPR 22 - EMC Immunity Conducted RF : IEC61000-4-6 Radiated RF : IEC61000-4-3 Switching Frequency PFC stage : 140KHz DC-DC stage : 200KHz Noise - < 2mV RMS Psophometrically weighted - < 10mV RMS - < 100mV p-p Protection - Over-voltage shutdown - Over-temperature - Over-current Micro-processor Control Size : 87Wx310Hx330D 567Wx1800Hx700D system Weight : 7kg Magazine size This unit magazine allows 5 module to fit side by side in a standard 19inch rack. Maximum Capacity:1200A (12 Unit) Load sharing Better than ±5% of full scale with active current sharing from SCU

17. Input - Voltage : Single Phase 180VAC – 255VAC - Frequency : 45 – 65Hz - Power Factor : >0.95 (above 40% Load) - Efficiency : >86% at >60% load - Inrush Current : <3A Output - Current : Nominal 50A - Voltage : 24V – 27V Protection - Over-voltage shutdown - Over-temperature - Over-current Cooling - Fan Cooling Size : 215W x 100H x 365D Rectifier DC 24V 50A(100A)

18. Input - Voltage : 1 Φ 95VAC – 255VAC - Frequency : 45 – 65Hz - Power Factor : >0.98 at 40% - 100% load - Efficiency : >85% at >60% load - Inrush Current : <4A Rectifier DC 24V 30A (90A) Output - Current : Nominal 30A - Float : 24V - 27V - Equalize : 25V - 30V - Current Limit Range : 5 – 33A - Load Regulation :± 0.5% Compliances - EMC Emissions Conducted RF : CISPR 22 Radiated RF : CISPR 22 - EMC Immunity Conducted RF : IEC61000-4-6 Radiated RF : IEC61000-4-3 Switching Frequency PFC stage : 140KHz DC-DC stage : 200KHz Noise - < 2mV RMS Psophometrically weighted - < 10mV RMS - < 100mV p-p Protection - Over-voltage shutdown - Over-temperature - Over-current Micro-processor Control Size : 105Wx176H(4u)x368D 567Wx1800Hx700D system Weight :5kg Magazine size This unit magazine allows 5 module to fit side by side in a standard 19inch rack. Maximum Capacity:420A (14 Unit) Load sharing Better than ±5% of full scale with active current sharing from SCU

19. Input - Voltage : 1 Φ 95VAC – 255VAC - Frequency : 45 – 65Hz - Power Factor : >0.98 at 40% - 100% load - Efficiency : >85% at >60% load - Inrush Current : <4A Rectifier DC 24V 30A (60A) Output - Current : Nominal 30A - Float : 24V - 27V - Equalize : 25V - 30V - Current Limit Range :10 – 33A - Load Regulation :± 0.5% Compliances - EMC Emissions Conducted RF : CISPR 22 Radiated RF : CISPR 22 - EMC Immunity Conducted RF : IEC61000-4-6 Radiated RF : IEC61000-4-3 Switching Frequency PFC stage : 140KHz DC-DC stage : 200KHz Noise - < 2mV RMS Psophometrically weighted - < 10mV RMS - < 100mV p-p Protection - Over-voltage shutdown - Over-temperature - Over-current - LVDS (Low Voltage Disconnect Switch) for Battery Micro-processor Control Size : 105Wx176H(4u)x368D 567Wx1800Hx700D system Weight :5kg Magazine size This unit magazine allows 5 module to fit side by side in a standard 19inch rack. Maximum Capacity:60A Battery in side Load sharing Better than ±5% of full scale with active current sharing from SCU

20. Input - Voltage : Single Phase 180VAC – 255VAC - Frequency : 45 – 65Hz - Power Factor : >0.95 (above 40% Load) - Efficiency : >87% at >60% load - Inrush Current : <3A Output - Current : Nominal 120A - Voltage : 12V Protection - Over-voltage shutdown - Over-temperature - Over-current Cooling - Fan Cooling Size : 435W x 130H(3u) x 370D Rectifier Unit DC 12V 120A

21. Input - Voltage : Single Phase 180VAC – 255VAC - Frequency : 45 – 65Hz - Power Factor : >0.95 (above 40% Load) - Efficiency : >80% at >60% load - Inrush Current : <3A Output - Current : Nominal 100A - Voltage : 4.8V – 5.5V Protection - Over-voltage shutdown - Over-temperature - Over-current Cooling - Fan Cooling Size : 212W X 89H X 290D Rectifier Unit DC 5V 100A

22. Power Distribution Unit

23. Input - Voltage : 48VDC or 24VDC - Dual Power - Indicator Power On Lamp CB Trip Lamp ACO Lamp Distribution Feeder - 7 Dual Load Magazine 436W X 88H(2U) X 400D to fit side by side in a standard 19 inch rack. Power Distribution Unit

24. Input - Voltage : 48VDC Output - Current : Dual Line Nominal 1200A, 800A, 630A Nominal 400A, 200A Cooling Natural Cooling Size : 750W X 1800H X 600D :1200A 566W X 1800H X 600D :800A ＜ Power Distribution DC 1200A ∼ 200A

25. Load Bank, Surge Protector,UPS Inverter, DC/DC Converter

26. Capacity : 150W Input - Voltage : DC 48V (44~54V) Output - Voltage : DC 5V 25A DC 3.3V 6A - Efficiency : > 70% - Load Regulation : ± 5% Protection - OVP - OCP - UVP DC - DC Converter

27. Input - Voltage : 48VDC Output - Current : Nominal 250A Cooling Fan Cooling (Power : 220Vac) Size : 565W X 1080H X 700D RESISTOR LOAD BANK

28. Input - Voltage : 24/48 VDC Size : 440W X 45H X 320D FAN UNIT

29. Input - Voltage : 1Phase 220VAC - Peak Current : 52KA Size : 75W X 55H X 100D Surge Protector Input - Voltage : 3Phase 380/220VAC - Peak Current : 80KA Size : 105W X 60H X 140D

30. Transfer Efficiency DC> 80% AC> 85% Capacity : 500VA AC Input Voltage - Nominal : 110/220V - Frequency : 47~63Hz - Curren(Total) : Total 8 A ( PC 4A/ 19” Monitor 3A) PC Power DC Output Rating Voltage +3.3V +5V +5V SB +12V -12V - 5V Current 20.0A 18.0A 0.8A 10.0A 0.5A 0.5A Battery - 16.8V/1.7(1.5)AH Ni-CD(14cell Series) - 14.4V/1.7AH Ni-CD(12cell Series) Back UP Time More than 8 Minutes (17 inch Monitor Used, 200W PC) System Control Program - OS Environment : Win 98, Win 2000 - System Auto-Shutdown : Enable - Back Up Time Auto Calculation : Enable - Power Supply Protection : Enable ( UVP ) - Computer Power Management ; Enable Dimension 154W X 144DX86H PABION(UPS For PC)

31. Capacity : 50KVA Input - Voltage : 3Phase 380Vac Output - Voltage : 3Phase 380Vac - Frequency : 60Hz ± 0.5% - Efficiency : > 90% - Power Factor : > 80% - Load Regulation : ± 1.5% Size : 820 X 890 X 1652mm Auto Call : To Pager UPS

32. Capacity : 5KVA Input - Voltage : DC 48V (44~54V) Output - Voltage : 1Phase AC 220V - Frequency : 60Hz - Efficiency : > 80% - Load Regulation :± 3% Size : 267 X 483 X 550mm Inverter (Rack type)

33. Product : Maeil Power Co.,Ltd TEL : +82) 02-3012-9005~6 FAX : +82) 02-3012-9013 Adr: The second floor 167-7, Garakdong, Song Pa Gu, Seoul, korea 138-160 E-mail: sunta@kornet.net