SUMMARY
3-phase power is measured using two primary methods: the 2-wattmeter method and the 3-wattmeter method. The 2-wattmeter method is applicable when the phases are balanced and the power factor is 1, allowing for measurement of amperage across one phase and voltage between two phases. In contrast, the 3-wattmeter method is utilized when the phases are unbalanced, requiring measurements of each phase's amperage and phase-to-phase voltage. A wiring diagram for wattmeters can be found in the Amprobe manual.
PREREQUISITES
- Understanding of 3-phase power systems
- Familiarity with wattmeter configurations
- Knowledge of electrical measurements (amperage and voltage)
- Basic concepts of power factor
NEXT STEPS
- Research the 2-wattmeter method for measuring 3-phase power
- Study the 3-wattmeter method and its applications
- Examine wiring diagrams for wattmeters in 3-phase systems
- Learn about power factor correction techniques
USEFUL FOR
Electrical engineers, technicians working with 3-phase power systems, and anyone involved in power measurement and analysis will benefit from this discussion.
