{"id":2103,"date":"2026-07-10T09:00:00","date_gmt":"2026-07-10T01:00:00","guid":{"rendered":"https:\/\/cnbygele.com\/blog\/capacitor-bank-sizing-for-power-factor-correction\/"},"modified":"2026-07-10T11:31:43","modified_gmt":"2026-07-10T03:31:43","slug":"capacitor-bank-sizing-for-power-factor-correction","status":"publish","type":"post","link":"https:\/\/cnbygele.com\/ru\/blog\/capacitor-bank-sizing-for-power-factor-correction\/","title":{"rendered":"\u0420\u0430\u0437\u043c\u0435\u0440 \u0431\u0430\u043d\u043a\u043e\u0432 \u043a\u043e\u043d\u0434\u0435\u043d\u0441\u0430\u0442\u043e\u0440\u043e\u0432 \u0434\u043b\u044f \u043a\u043e\u0440\u0440\u0435\u043a\u0446\u0438\u0438 \u043a\u043e\u044d\u0444\u0444\u0438\u0446\u0438\u0435\u043d\u0442\u0430 \u043c\u043e\u0449\u043d\u043e\u0441\u0442\u0438 \u2014 \u0420\u0443\u043a\u043e\u0432\u043e\u0434\u0441\u0442\u0432\u043e \u0434\u043b\u044f \u0438\u043d\u0436\u0435\u043d\u0435\u0440\u043e\u0432"},"content":{"rendered":"<div class=\"cnbyg-article\" style=\"max-width:820px;margin:0 auto;\">\n<p style=\"margin:0 0 16px;line-height:1.7;\"><strong>Capacitor bank sizing<\/strong> for power factor correction starts with measured kW and power factor at the billing or compensation point\u2014not with catalog kvar tables alone. This guide focuses on practical evaluation steps for U.S. industrial and commercial buyers\u2014measurement, documentation, and lifecycle support\u2014not generic marketing claims. Where equipment selection is involved, cross-check public specifications on cnbygele.com and confirm project-specific limits with your utility or consulting engineer. Section checklists can be reused as RFQ attachments and commissioning handover outlines.<\/p>\n<nav style=\"background:#f7f9fb;border:1px solid #e3e8ee;border-radius:8px;padding:14px 18px;margin:0 0 24px;\">\n<p style=\"margin:0 0 16px;line-height:1.7;\"><strong>On this page<\/strong><\/p>\n<ul style=\"margin:0 0 18px 1.2em;line-height:1.7;\">\n<li style=\"margin:0 0 16px;line-height:1.7;\"><a href=\"#part-1-measure-and-set-the-target-power-factor\">Part 1. Measure and Set the Target Power Factor<\/a><\/li>\n<li style=\"margin:0 0 16px;line-height:1.7;\"><a href=\"#part-2-kvar-calculation-and-step-selection\">Part 2. kVAR Calculation and Step Selection<\/a><\/li>\n<li style=\"margin:0 0 16px;line-height:1.7;\"><a href=\"#part-3-detuning-protection-and-verification\">Part 3. Detuning, Protection, and Verification<\/a><\/li>\n<li style=\"margin:0 0 16px;line-height:1.7;\"><a href=\"#part-4-documentation-and-handover-checklist\">Part 4. Documentation and Handover Checklist<\/a><\/li>\n<li style=\"margin:0 0 16px;line-height:1.7;\"><a href=\"#part-5-commissioning-monitoring-and-long-term-op\">Part 5. Commissioning, Monitoring, and Long-Term Operations<\/a><\/li>\n<\/ul>\n<\/nav>\n<figure style=\"margin:26px 0;text-align:center;\"><img loading=\"lazy\" decoding=\"async\" style=\"max-width:640px;width:100%;height:auto;display:block;margin:0 auto;border-radius:8px;\" src=\"https:\/\/cnbygele.com\/wp-content\/uploads\/2026\/07\/capacitor-bank-sizing-for-power-factor-correction-cover.webp\" alt=\"Capacitor bank sizing for power factor correction concept illustration\" width=\"640\" height=\"360\"\/><\/figure>\n<h2 id=\"part-1-measure-and-set-the-target-power-factor\" style=\"margin:42px 0 14px;font-size:1.35em;line-height:1.3;\">Part 1. Measure and Set the Target Power Factor<\/h2>\n<p style=\"margin:0 0 16px;line-height:1.7;\">Record active power (kW) and power factor at peak and typical load intervals\u2014utilities often bill on interval peaks.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7;\">Target PF should reflect tariff rules; 0.95 lagging is common but verify with your account manager.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7;\">Power quality projects succeed when measurement, design, and procurement stay aligned across owner, consultant, and panel builder roles.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7;\">Document nominal voltage, available fault level, and ambient conditions before final equipment selection.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7;\">Use conservative language for performance claims until site-specific studies confirm targets.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7;\">Capture nameplate data, single-line drawings, and utility interconnection rules in the RFQ package to reduce back-and-forth during technical review.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7;\">If your site mixes linear motors and nonlinear electronics, treat harmonic and reactive targets as linked requirements rather than separate purchases.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7;\">Define acceptance criteria before shipment\u2014power factor, step response, or THD at agreed load points\u2014so commissioning disputes are less likely.<\/p>\n<div class=\"tip-box\" style=\"border-left:4px solid #2e7d32;background:#f3faf4;padding:12px 16px;margin:0 0 18px;line-height:1.7;\"><strong>Tip:<\/strong> Size to the measurement point where penalties apply\u2014main bus vs feeder can differ.<\/div>\n<h2 id=\"part-2-kvar-calculation-and-step-selection\" style=\"margin:42px 0 14px;font-size:1.35em;line-height:1.3;\">Part 2. kVAR Calculation and Step Selection<\/h2>\n<p style=\"margin:0 0 16px;line-height:1.7;\">Required kvar \u2248 kW \u00d7 (tan \u03c61 \u2212 tan \u03c62), where \u03c61 is the present angle and \u03c62 is the target angle.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7;\">Select stepped kvar that avoids over-compensation at minimum load; pair with <a href=\"https:\/\/cnbygele.com\/product\/by75-series-reactive-power-compensation-controller\/\">automatic controllers<\/a> for varying plants.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7;\">Compare total installed cost including reactors, controllers, enclosures, and commissioning\u2014not equipment list price alone.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7;\">Internal links to <a href=\"https:\/\/cnbygele.com\/product\/svg-static-var-generators-2\/\">SVG product line<\/a>, <a href=\"https:\/\/cnbygele.com\/product\/bsmjparallel-series-self-healing-low-voltage-parallel-capacitors\/\">low-voltage capacitor banks<\/a>, and <a href=\"https:\/\/cnbygele.com\/product\/ahf-active-harmonic-filter-harmonic-control-2\/\">active harmonic filters<\/a> help buyers navigate related product categories on cnbygele.com.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7;\">Lead times and MOQ vary by configuration; confirm in quotation for export shipments.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7;\">Capture nameplate data, single-line drawings, and utility interconnection rules in the RFQ package to reduce back-and-forth during technical review.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7;\">If your site mixes linear motors and nonlinear electronics, treat harmonic and reactive targets as linked requirements rather than separate purchases.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7;\">Define acceptance criteria before shipment\u2014power factor, step response, or THD at agreed load points\u2014so commissioning disputes are less likely.<\/p>\n<table style=\"width:100%;border-collapse:collapse;margin:0 0 20px;\">\n<thead>\n<tr>\n<th style=\"border:1px solid #d9e1e8;padding:9px 12px;background:#f4f7fa;text-align:left;\">Load profile<\/th>\n<th style=\"border:1px solid #d9e1e8;padding:9px 12px;background:#f4f7fa;text-align:left;\">Bank type<\/th>\n<th style=\"border:1px solid #d9e1e8;padding:9px 12px;background:#f4f7fa;text-align:left;\">Reason<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px;vertical-align:top;\">Stable base load<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px;vertical-align:top;\">Fixed bank<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px;vertical-align:top;\">Lower cost<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px;vertical-align:top;\">>20% load swing<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px;vertical-align:top;\">Switched automatic bank<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px;vertical-align:top;\">Avoid leading PF at light load<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px;vertical-align:top;\">Harmonics present<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px;vertical-align:top;\">Detuned bank + reactor<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px;vertical-align:top;\">Reduce resonance risk<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px;vertical-align:top;\">Fast inrush duty<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px;vertical-align:top;\">Compound switch steps<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px;vertical-align:top;\">Protect contactors<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<figure style=\"margin:26px 0;text-align:center;\"><img loading=\"lazy\" decoding=\"async\" style=\"max-width:640px;width:100%;height:auto;display:block;margin:0 auto;border-radius:8px;\" src=\"https:\/\/cnbygele.com\/wp-content\/uploads\/2026\/07\/capacitor-bank-sizing-for-power-factor-correction-body.webp\" alt=\"capacitor bank sizing power factor correction \u2014 CNBYG product in industrial power facility (illustrative)\" width=\"640\" height=\"360\"\/><\/figure>\n<h2 id=\"part-3-detuning-protection-and-verification\" style=\"margin:42px 0 14px;font-size:1.35em;line-height:1.3;\">Part 3. Detuning, Protection, and Verification<\/h2>\n<p style=\"margin:0 0 16px;line-height:1.7;\">When VFDs or rectifiers dominate, add <a href=\"https:\/\/cnbygele.com\/product\/cksg-series-low-voltage-series-reactors\/\">series filter reactors<\/a> and re-rate capacitor voltage for detuning rise.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7;\">Verify fuses, discharge, and step interlocks before energization; re-measure PF after commissioning.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7;\">Post-commissioning, schedule periodic verification of power factor, THD, and temperature rise at key buses.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7;\">Keep spare fuses, contactors, or modules identified in the maintenance plan.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7;\">Submit project parameters via <a href=\"https:\/\/cnbygele.com\/contact-us\/\">CNBYG contact<\/a> for engineering feedback on fit and documentation.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7;\">Capture nameplate data, single-line drawings, and utility interconnection rules in the RFQ package to reduce back-and-forth during technical review.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7;\">If your site mixes linear motors and nonlinear electronics, treat harmonic and reactive targets as linked requirements rather than separate purchases.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7;\">Define acceptance criteria before shipment\u2014power factor, step response, or THD at agreed load points\u2014so commissioning disputes are less likely.<\/p>\n<div class=\"tip-box\" style=\"border-left:4px solid #2e7d32;background:#f3faf4;padding:12px 16px;margin:0 0 18px;line-height:1.7;\"><strong>Tip:<\/strong> Keep as-built single-line diagrams updated after any feeder changes.<\/div>\n<div class=\"warning-box\" style=\"border-left:4px solid #f9a825;background:#fffbf0;padding:12px 16px;margin:0 0 18px;line-height:1.7;\"><strong>Important:<\/strong> Over-compensation at light load can raise voltage and trigger leading power factor penalties on some tariffs.<\/div>\n<h2 id=\"part-4-documentation-and-handover-checklist\" style=\"margin:42px 0 14px;font-size:1.35em;line-height:1.3;\">Part 4. Documentation and Handover Checklist<\/h2>\n<p style=\"margin:0 0 16px;line-height:1.7;\">Industrial acceptance should not rely on energization alone\u2014documentation proves ratings, safety, and maintainability for the next maintenance cycle.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7;\">Use the tables below as a starting RFQ checklist; your utility or EPC contract may require additional items.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7;\">For product-specific datasheets, cross-check <a href=\"https:\/\/cnbygele.com\/product\/bsmjparallel-series-self-healing-low-voltage-parallel-capacitors\/\">related CNBYG product pages<\/a> and request any missing type test excerpts.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7;\">Align factory acceptance tests with items your insurer or utility interconnection agreement may require.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7;\">When comparing quotations, normalize currency, Incoterms, and included commissioning services before ranking suppliers.<\/p>\n<table style=\"width:100%;border-collapse:collapse;margin:0 0 20px;\">\n<thead>\n<tr>\n<th style=\"border:1px solid #d9e1e8;padding:9px 12px;background:#f4f7fa;text-align:left;\">Document \/ item<\/th>\n<th style=\"border:1px solid #d9e1e8;padding:9px 12px;background:#f4f7fa;text-align:left;\">Purpose<\/th>\n<th style=\"border:1px solid #d9e1e8;padding:9px 12px;background:#f4f7fa;text-align:left;\">When to request<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px;vertical-align:top;\">Factory type test report<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px;vertical-align:top;\">Verify rated voltage, kvar, and temperature rise<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px;vertical-align:top;\">Before purchase order<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px;vertical-align:top;\">Single-line diagram template<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px;vertical-align:top;\">Panel layout and protection coordination<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px;vertical-align:top;\">Design phase<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px;vertical-align:top;\">Communication register map<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px;vertical-align:top;\">BMS\/SCADA integration<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px;vertical-align:top;\">Before FAT\/SAT<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px;vertical-align:top;\">Spare parts list (5+ year)<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px;vertical-align:top;\">Lifecycle planning<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px;vertical-align:top;\">Contract negotiation<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px;vertical-align:top;\">Commissioning checklist<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px;vertical-align:top;\">Acceptance testing<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px;vertical-align:top;\">Before energization<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<table style=\"width:100%;border-collapse:collapse;margin:0 0 20px;\">\n<thead>\n<tr>\n<th style=\"border:1px solid #d9e1e8;padding:9px 12px;background:#f4f7fa;text-align:left;\">Site condition<\/th>\n<th style=\"border:1px solid #d9e1e8;padding:9px 12px;background:#f4f7fa;text-align:left;\">Risk<\/th>\n<th style=\"border:1px solid #d9e1e8;padding:9px 12px;background:#f4f7fa;text-align:left;\">Mitigation<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px;vertical-align:top;\">Harmonics present<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px;vertical-align:top;\">Resonance with capacitor steps<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px;vertical-align:top;\">Detuning reactors or APF per IEEE 519 review<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px;vertical-align:top;\">Outdoor installation<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px;vertical-align:top;\">Temperature \/ humidity<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px;vertical-align:top;\">Confirm enclosure and capacitor technology<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px;vertical-align:top;\">Frequent motor switching<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px;vertical-align:top;\">Inrush and step transients<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px;vertical-align:top;\">Proper switching sequence and controller delays<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px;vertical-align:top;\">Utility PF penalties<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px;vertical-align:top;\">Operating cost<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px;vertical-align:top;\">Size to measured kvar at billing interval<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<div class=\"tip-box\" style=\"border-left:4px solid #2e7d32;background:#f3faf4;padding:12px 16px;margin:0 0 18px;line-height:1.7;\"><strong>Tip:<\/strong> Store factory test reports with the panel serial number for future warranty claims.<\/div>\n<div class=\"tip-box\" style=\"border-left:4px solid #2e7d32;background:#f3faf4;padding:12px 16px;margin:0 0 18px;line-height:1.7;\"><strong>Tip:<\/strong> Confirm imperial and metric dimensions if shipping to mixed-design sites.<\/div>\n<h2 id=\"part-5-commissioning-monitoring-and-long-term-op\" style=\"margin:42px 0 14px;font-size:1.35em;line-height:1.3;\">Part 5. Commissioning, Monitoring, and Long-Term Operations<\/h2>\n<p style=\"margin:0 0 16px;line-height:1.7;\">Commissioning should verify that reactive and harmonic targets are met at the point of common coupling, not only at the compensation cabinet terminals.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7;\">Functional tests typically include step response, power factor at defined load points, and harmonic readings compared to contract or IEEE 519 guidance where applicable.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7;\">Monitoring after energization helps catch hunting, unexpected resonance, or capacitor cell failures before they affect production uptime.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7;\">Train maintenance staff on lockout\/tagout, discharge timing for capacitors, and which alarms require immediate shutdown versus scheduled service.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7;\">Schedule a post-warranty review to reassess load changes\u2014production line upgrades often change compensation needs within three to five years.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7;\">Utility account managers can clarify whether PF adjustments affect demand charges only, energy charges, or both\u2014align KPIs before writing acceptance tests.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7;\">Keep a spare-parts criticality list (fuses, contactors, fan assemblies, control boards) based on lead time and production impact, not catalog defaults alone.<\/p>\n<div class=\"tip-box\" style=\"border-left:4px solid #2e7d32;background:#f3faf4;padding:12px 16px;margin:0 0 18px;line-height:1.7;\"><strong>Tip:<\/strong> Log baseline power quality measurements after commissioning for future troubleshooting comparisons.<\/div>\n<h2 style=\"margin:42px 0 14px;font-size:1.35em;line-height:1.3;\">Recommended CNBYG Products<\/h2>\n<p style=\"margin:0 0 16px;line-height:1.7;\">For project support, explore related product line, <a href=\"https:\/\/cnbygele.com\/blog\/power-quality-system-explained-components-benefits-and-applications\/\">power quality planning articles<\/a>, <a href=\"https:\/\/cnbygele.com\/oem-odm\/\">OEM\/ODM programs<\/a>, <a href=\"https:\/\/cnbygele.com\/about-us\/\">about CNBYG<\/a> on cnbygele.com.<\/p>\n<figure style=\"margin:26px 0;text-align:center;\"><img loading=\"lazy\" decoding=\"async\" style=\"max-width:640px;width:100%;height:auto;display:block;margin:0 auto;border-radius:8px;\" src=\"https:\/\/cnbygele.com\/wp-content\/uploads\/2026\/07\/capacitor-bank-sizing-for-power-factor-correction-product.webp\" alt=\"CNBYG capacitor product recommendation (illustrative scene)\" width=\"640\" height=\"360\"\/><\/figure>\n<p style=\"margin:0 0 16px;line-height:1.7;\"><strong>Ready to discuss your project?<\/strong> Contact <a href=\"https:\/\/cnbygele.com\/contact-us\/\">CNBYG engineering contact<\/a> with your voltage class, load list, and target power factor or THD goals.<\/p>\n<h2 style=\"margin:42px 0 14px;font-size:1.35em;line-height:1.3;\">FAQ<\/h2>\n<h3 style=\"margin:28px 0 10px;font-size:1.15em;line-height:1.35;\">How do you calculate kVAR for power factor correction?<\/h3>\n<p style=\"margin:0 0 16px;line-height:1.7;\">Measure active power kW and the present and target power factor angles. Required kvar \u2248 kW \u00d7 (tan \u03c61 \u2212 tan \u03c62), where \u03c61 corresponds to the current PF and \u03c62 to the target PF.<\/p>\n<h3 style=\"margin:28px 0 10px;font-size:1.15em;line-height:1.35;\">What power factor target should I use for capacitor sizing?<\/h3>\n<p style=\"margin:0 0 16px;line-height:1.7;\">Many U.S. industrial sites target 0.95 lagging, but confirm your utility tariff and any leading-PF penalties before finalizing the setpoint.<\/p>\n<h3 style=\"margin:28px 0 10px;font-size:1.15em;line-height:1.35;\">Should I use a fixed or automatic capacitor bank?<\/h3>\n<p style=\"margin:0 0 16px;line-height:1.7;\">Fixed banks suit nearly constant base load. Automatic stepped banks are preferred when load varies more than roughly 20% so you avoid over-compensation at light load.<\/p>\n<h3 style=\"margin:28px 0 10px;font-size:1.15em;line-height:1.35;\">How do I avoid over-compensation when sizing capacitors?<\/h3>\n<p style=\"margin:0 0 16px;line-height:1.7;\">Size steps for minimum-load conditions, use controller minimum-step logic, and verify leading PF is not exceeded after the largest step switches in.<\/p>\n<h3 style=\"margin:28px 0 10px;font-size:1.15em;line-height:1.35;\">When do I need detuning reactors with a capacitor bank?<\/h3>\n<p style=\"margin:0 0 16px;line-height:1.7;\">When harmonic-producing loads (VFDs, rectifiers, UPS) are significant\u2014detuning shifts resonance and reduces amplification; capacitors may need higher voltage rating.<\/p>\n<h3 style=\"margin:28px 0 10px;font-size:1.15em;line-height:1.35;\">Should capacitors be sized to peak or average load?<\/h3>\n<p style=\"margin:0 0 16px;line-height:1.7;\">Use the billing or penalty measurement interval\u2014often peak or near-peak demand\u2014while checking that the resulting steps do not over-correct at minimum load.<\/p>\n<h2 style=\"margin:42px 0 14px;font-size:1.35em;line-height:1.3;\">References<\/h2>\n<ul style=\"margin:0 0 18px 1.2em;line-height:1.7;\">\n<li><a href=\"https:\/\/mccpanels.com\/knowledge\/capacitor-bank-sizing\" rel=\"nofollow noopener\" target=\"_blank\">MCC Panels \u2014 Capacitor Bank Sizing &#038; Detuned Reactor Guide<\/a><\/li>\n<li><a href=\"https:\/\/calcpanel.com\/guides\/capacitor-bank-sizing-for-power-factor-correction\" rel=\"nofollow noopener\" target=\"_blank\">CalcPanel \u2014 Capacitor Bank Sizing for Power Factor Correction<\/a><\/li>\n<li><a href=\"https:\/\/www.vishay.com\/docs\/13003\/calcandtables-esta-lvpc.pdf\" rel=\"nofollow noopener\" target=\"_blank\">Vishay ESTA \u2014 Calculations and Tables (LV power capacitors)<\/a><\/li>\n<li><a href=\"https:\/\/www.sourcebyspec.com\/encyclopedia\/reactive-power-compensation.html\" rel=\"nofollow noopener\" target=\"_blank\">SpecForge \u2014 Reactive Power Compensation encyclopedia<\/a><\/li>\n<\/ul>\n<\/div>\n<p><script type=\"application\/ld+json\">{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"How do you calculate kVAR for power factor correction?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Measure active power kW and the present and target power factor angles. 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