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Why Dc Power

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Why do we need ELTEK Power Supply? - And why do we need Batteries? ? Why Power & Batteries
[object Object],[object Object],Why Power & Batteries
Why DC and not AC Power Supply? ,[object Object],[object Object]
Why DC and not AC Power Supply ? ,[object Object],[object Object],[object Object]
TYPICAL POWER PLANT ,[object Object],[object Object],[object Object]
Overview/Components in a Power System NONE PRIORITY LOAD LOAD (pc’s or different voltage) UPS AC/DC - DC/AC ALARM MODULE Rectifier #1 Rectifier #2 Rectifier #n G OVP MAINS FUSES LVBD BATTERY DISTRIBUTION BATTERY BANK DC-DC or DC/AC REDUNDANT RECTIFIER SYSTEM AC/DC DIESEL GENERATOR Rectifier #n LVLD Battery & Load Distribution PRIORITY LOAD BATTERY BANK
Current Flow in a System ,[object Object],[object Object],[object Object],RECTIFIER SYSTEM TELECOM EQUIPMENT BATTERY BANK AC INPUT
Current Flow in a System RECTIFIER SYSTEM TELECOM EQUIPMENT BATTERY BANK AC INPUT ,[object Object],[object Object],[object Object]
Current Flow in a System RECTIFIER SYSTEM TELECOM EQUIPMENT BATTERY BANK AC INPUT ,[object Object],[object Object],[object Object]
Voltage Sequence in a DC Power System Float charge Battery discharge Battery recharge Mains failure t U 53.5 43.2 -w/current limitation Disconnect Voltage (43,2 / 24=1,8v) Mains resume Charge Current Limitation Normal charge current
BATTERIES ,[object Object],[object Object],[object Object]
Operating principle of the Recombination Technology ,[object Object],[object Object]
Open Circuit Voltage in relation to state of charge of the cell. State of charge (%) V DC 1.90 Open Circuit Voltage (per cell)l 1.95 2.00 2.05 2.10 2.15 25 50 75 100 0 Charge Voltage Open Circuit Voltage
Float Voltage versus temperature (Example from Exide) END OF SESSION....

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Why Dc Power

  • 1. Why do we need ELTEK Power Supply? - And why do we need Batteries? ? Why Power & Batteries
  • 2.
  • 3.
  • 4.
  • 5.
  • 6. Overview/Components in a Power System NONE PRIORITY LOAD LOAD (pc’s or different voltage) UPS AC/DC - DC/AC ALARM MODULE Rectifier #1 Rectifier #2 Rectifier #n G OVP MAINS FUSES LVBD BATTERY DISTRIBUTION BATTERY BANK DC-DC or DC/AC REDUNDANT RECTIFIER SYSTEM AC/DC DIESEL GENERATOR Rectifier #n LVLD Battery & Load Distribution PRIORITY LOAD BATTERY BANK
  • 7.
  • 8.
  • 9.
  • 10. Voltage Sequence in a DC Power System Float charge Battery discharge Battery recharge Mains failure t U 53.5 43.2 -w/current limitation Disconnect Voltage (43,2 / 24=1,8v) Mains resume Charge Current Limitation Normal charge current
  • 11.
  • 12.
  • 13. Open Circuit Voltage in relation to state of charge of the cell. State of charge (%) V DC 1.90 Open Circuit Voltage (per cell)l 1.95 2.00 2.05 2.10 2.15 25 50 75 100 0 Charge Voltage Open Circuit Voltage
  • 14. Float Voltage versus temperature (Example from Exide) END OF SESSION....