Three-Phase 3-Wire (3P3W2M) Power System Measurement - PCE Instruments PCE-360-ICA Instruction Manual

5-4 Three-Phase 3-Wire (3P3W2M) Power System Measurement

Using 2 power meter method
Application :
Induction motors without adjustable speed
drive.
⚫ Checking voltage unbalance.
⚫ Checking current and current unbalance.
⚫ Measuring power in 3-phase balanced and
unbalanced system.
⚫ Measuring power factor of 3-phase
motors.
⚫ Measuring voltage harmonics (use PC).
Unbalance factor:
When the load of the specified phase becomes too heavy due to fluctuations
in loads connected to each power line phases, or when operating on uneven
device, the voltage and current waveforms become distorted, causing voltage
drops, they can cause voltage unbalance, reverse phase to neutral voltage,
and harmonics may cause accidents such as uneven motor rotation, circuit
breaker trips, and over load heating in the transformer.
User Manual
Induction motors with adjustable speed
drive.
⚫ Checking current on phases.
⚫ Measuring frequency of motor current.
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