Basic Electricity Alternating Current

Generating electricity by Magnetism

2 Forms

• Direct current
• Classification of direct Current
• Pure DC = Battery source
• Rectified DC = AC converted to DC

• Alternating Current
• Classification of Alternating Current
• Extra Low Voltage………..30 V or less
• Low Voltage………………31 to 750 V
• High Voltage………………751 V or more

• 3 Wave Forms
• Phase…….1 wave form
• Phase…….2 wave forms
• Phase…….3 wave forms

• For generating and distribution of large quantities of electrical power Alternating Current is used rather the DC

Alternating of AC over DC

• Alternators can be manufactured with much higher voltage and power ratings than comparable DC Generators
  
  
• Alternating Voltages can be stopped up or stepped down
  
  
• AC motors and controls are generally smaller, simpler, cheaper, and more reliable than similar DC motors
  
  
• In North America large Alternations commonly generate voltages up to 13,800 volts