Power quality guides.
Power-factor correction, APFC sizing and harmonic conditions to check before specifying equipment.
5 articles
Detuned APFC panels and harmonics: what to specify
Understand the purpose of detuned reactors, why a harmonic assessment matters, and what a panel manufacturer needs before sizing an APFC bank.
Transformer turns ratio test: purpose, results and meter selection
Learn what a transformer turns ratio test checks, why vector group and tap position matter, and which details a TTR meter quotation needs.
Conventional vs Thyristorised APFC Panels: Choosing the Switching Method
Contactor and thyristor APFC panels suit different load-change patterns. Compare response, switching duty, thermal design and power-quality checks before deciding.
APFC Panel Working Principle: From Measurement to Capacitor Switching
An APFC panel measures the supply and switches capacitor stages as reactive demand changes. Understand the controller, CT location, switching sequence and checks before specifying a panel.
APFC Panel Sizing: Load, kvar & Switching Checks
Size an APFC bank from measured active power, starting and target power factors, load variation and harmonics. Check the switching arrangement before ordering.
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