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Read practical engineering insights on harmonics, reactive power, voltage stability, equipment selection and commissioning for industrial and utility projects.

Which Power Quality Products Fit Power Generation Buses

Which Power Quality Products Fit Power Generation Buses

Power quality products for the power generation industry: shortlist AHF, SVG, capacitors, and DVR gear for plant auxiliaries and utility buses today.

What Is Power Factor in an AC Circuit?

What Is Power Factor in an AC Circuit?

Power factor in an AC circuit is real power divided by apparent power. Learn lagging vs leading, why low PF raises current, and what 0.8 or 0.95 means.

What Reactive Power Means in an AC RL Circuit

What Reactive Power Means in an AC RL Circuit

In an AC RL circuit, reactive power is magnetic-field energy stored and returned by the inductor—not wasted watts—with φ, lagging PF, and plant VAR mapping.

Three-Phase Reactive Power Formulas from Meter Readings

Three-Phase Reactive Power Formulas from Meter Readings

Use the reactive power formula in 3 phase from line voltage and current, or from kW and power factor, with √3, line-versus-phase checks, and worked examples.

How to Read a Phasor Diagram of Synchronous Motor at Leading Power Factor

How to Read a Phasor Diagram of Synchronous Motor at Leading Power Factor

Phasor diagram of synchronous motor at leading power factor: label V, I, E, and phi on the sketch, then know when an LV APFC cabinet still has work.

Over Excited Synchronous Motor: Leading or Lagging Reactive Power

Over Excited Synchronous Motor: Leading or Lagging Reactive Power

An over-excited synchronous motor runs at leading PF and supplies VARs. See the under-excited contrast and when a capacitor bank or SVG is still needed.