Electric Power Metering for Single and Three Phase Systems

This course concentrates on the electricity meter, electric meter, electrical meter, energy meter, or kilowatt-hour meter which is a device that measures the amount of electric energy consumed by a residence, a business, or an electrically powered device.

Electric meter or energy meter measurements, the total power consumed over time are examined.

Electric meters installed at customers' premises for billing and monitoring purposes are examined from the electric utility perspective. The typical calibrated billing units are developed, the most common one being the kilowatt-hour (kWh) and how they are read once each billing period.

If desired, some meters may measure demand, and the maximum use of power in some intervals. "Time of use" metering allows electric rates to be changed during the day, to record usage during peak high-cost periods and off-peak, lower-cost, periods.

Single-phase and three-phase metering measurements are also covered.

Learning Outcomes:

1. Graduates of this course will be familiar with the following:
2. What is Electric Power
3. AC & DC Power
4. Voltage Current, & Power Vectors (Phases)
5. Capacitive & Inductive Loads
6. Real Reactive & Apparent Power (Watts, Vats, VA)
7. The Dynamometer Wattmeter
8. The Energy Meter
9. Instrument Transformers (Current & Voltage CT's & PT's)
10. 3-Wire, Single-Phase Metering
11. Polyphase Energy Meters
12. 3-Wire, Single-Phase Metering with CTs & PTs
13. Metering a 3 Phase 4 Wire Load ("Y" Connected)
14. Metering a 3 Phase 3 Wire Load (Delta Connected)
15. Metering Measurement Standards
16. Blonde's Theorem
17. Phase & Line Relationship

Who this course is for:

• Electrical Power Systems Managers, Engineers, Technologists, Maintenance Workers, Students in Engineering
• Anyone who wants to learn power & energy measurement of a three-phase system