Most AHF and SVG quotations are built backwards. A buyer collects a short-circuit level, a transformer rating and a target THDi, then asks three suppliers for a price. The result is a device sized to a guess rather than to the disturbance. A power quality report already contains most of what is needed to size a harmonic filter or reactive compensator correctly, provided the reader knows which colu...
Industrial efficiency losses are not always mechanical. A plant can keep every machine healthy and still lose energy, capacity and uptime to harmonics, reactive power and three-phase current imbalance that never appear on a maintenance checklist. VFDs, rectifier-fed equipment and fast-switching electronics make production more efficient while making the network underneath less forgiving. This arti...
SVG sizing for power factor correction cannot be estimated from transformer capacity or a motor nameplate alone. Those figures describe how much load a site could connect, not how much reactive power the load actually exchanges with the supply at the point of common coupling (PCC). A Static Var Generator chosen from nameplate data will either leave the power factor short of target or spend on capa...
Capacitor bank overheating after adding VFDs is a power quality symptom, not a capacitor defect. VFD rectifiers inject harmonic current, the bank offers a low-impedance path at those frequencies, and parallel resonance between the bank and the supply can amplify that current until fuses open, contactors chatter and capacitor cans swell. A capacitor bank supplies reactive power to correct power fac...
Capacitor Banks vs. Active SVG: Which Power Factor Correction Is Right for You? When your electricity bill suddenly spikes — or your utility sends a power-factor penalty notice — a common fix is to install power factor correction (PFC). For decades, that meant one thing: capacitor banks. Today you have a second, modern option: the Static Var Generator (SVG). Both i...
Dear Customers and Partners, As China’s National Day approaches, YT Electric would like to express our sincere appreciation to all customers, distributors and partners for your continued trust and support. Please be informed that our office will be closed for the China National Day Holiday from October 1 to October 7, 2026. During this period, responses to emails, technical inquiries and ord...
Installing an Active Harmonic Filter (AHF) or Static Var Generator (SVG) is not simply a matter of choosing the correct current or kVAr rating. In factories, data centers, commercial buildings and infrastructure projects with multiple transformers or bus sections, the location of the equipment can directly affect compensation performance. Should one large AHF or SVG be installed at the main low-vo...
SVG Reactive Power Compensation: Beyond PF Correction SVG Reactive Power Compensation Is Beyond a Capacitor Bank Upgrade A capacitor bank supplies fixed or switched capacitive kvar. It works when the load is relatively stable, the network is not harmonic-rich, and switching delays do not matter. It becomes a weak fit when VFDs, rectifiers, welding loads, or UPS front ends make reacti...
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