{"id":1849,"date":"2025-12-31T06:16:43","date_gmt":"2025-12-31T06:16:43","guid":{"rendered":"https:\/\/yawei-powertransformer.com\/?page_id=1849"},"modified":"2026-03-26T06:51:44","modified_gmt":"2026-03-26T06:51:44","slug":"glossaries","status":"publish","type":"page","link":"https:\/\/yawei-powertransformer.com\/zh\/glossaries\/","title":{"rendered":"\u8a5e\u5f59"},"content":{"rendered":"<div class=\"slider-wrapper relative\" id=\"slider-1304350664\" >\n    <div class=\"slider slider-nav-circle slider-nav-large slider-nav-light slider-style-normal\"\n        data-flickity-options='{\n            \"cellAlign\": \"center\",\n            \"imagesLoaded\": true,\n            \"lazyLoad\": 1,\n            \"freeScroll\": false,\n            \"wrapAround\": true,\n            \"autoPlay\": 6000,\n            \"pauseAutoPlayOnHover\" : true,\n            \"prevNextButtons\": true,\n            \"contain\" : true,\n            \"adaptiveHeight\" : true,\n            \"dragThreshold\" : 10,\n            \"percentPosition\": true,\n            \"pageDots\": true,\n            \"rightToLeft\": false,\n            \"draggable\": true,\n            \"selectedAttraction\": 0.1,\n            \"parallax\" : 0,\n            \"friction\": 0.6        }'\n        >\n        \n\n  <div class=\"banner has-hover\" id=\"banner-269265797\">\n          <div class=\"banner-inner fill\">\n        <div class=\"banner-bg fill\" >\n            <div class=\"bg fill bg-fill \"><\/div>\n                        <div class=\"overlay\"><\/div>            \n                    <\/div>\n\t\t\n        <div class=\"banner-layers container\">\n            <div class=\"fill banner-link\"><\/div>            \n   <div id=\"text-box-153558463\" class=\"text-box banner-layer x5 md-x5 lg-x5 y95 md-y95 lg-y95 res-text\">\n                     <div data-animate=\"flipInY\">           <div class=\"text-box-content text dark\">\n              \n              <div class=\"text-inner text-center\">\n                  \n<div class=\"is-divider divider clearfix\" style=\"margin-top:3px;margin-bottom:3px;\"><\/div>\n<h1 class=\"h-large uppercase\" style=\"text-align: left;\"><span style=\"font-size: 100%; color: #000000;\"><strong>Powering <span style=\"color: #000000;\">Knowledge<\/span><\/strong><\/span><\/h1>\n<p style=\"text-align: left;\"><span style=\"color: #000000; font-size: 130%;\"><em><strong>Your Comprehensive Guide to Power Transformers, from UHV 500kV to 1200MVA, Connecting Global Markets with Yawei Transformer Expertise<\/strong><\/em><\/span><\/p>\n<div class=\"row\"  id=\"row-1072076343\">\n\n\t<div id=\"col-1693284723\" class=\"col medium-6 small-12 large-6\"  >\n\t\t\t\t<div class=\"col-inner\"  >\n\t\t\t\n\t\t\t\n<a href=\"\/contact\" class=\"button primary is-shade is-large\"  >\n    <span>GET A TRANSFORMER QUOTE<\/span>\n  <\/a>\n\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\n\t\n\n\t<div id=\"col-1076183935\" class=\"col medium-2 small-12 large-2\"  >\n\t\t\t\t<div class=\"col-inner\"  >\n\t\t\t\n\t\t\t\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\n\t\n\n\t<div id=\"col-1098007810\" class=\"col medium-4 small-12 large-4\"  >\n\t\t\t\t<div class=\"col-inner\"  >\n\t\t\t\n\t\t\t\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\n\t\n<\/div>\n<div class=\"is-divider divider clearfix\" ><\/div>\n              <\/div>\n           <\/div>\n       <\/div>                     \n<style>\n#text-box-153558463 {\n  width: 100%;\n}\n#text-box-153558463 .text-box-content {\n  font-size: 100%;\n}\n@media (min-width:550px) {\n  #text-box-153558463 {\n    width: 52%;\n  }\n}\n<\/style>\n    <\/div>\n \n        <\/div>\n      <\/div>\n\n            \n<style>\n#banner-269265797 {\n  padding-top: 600px;\n}\n#banner-269265797 .bg.bg-loaded {\n  background-image: url(https:\/\/yawei-powertransformer.com\/wp-content\/uploads\/2025\/12\/China-Power-Transformer-Glossaries-Yawei-Transformer-.webp);\n}\n#banner-269265797 .overlay {\n  background-color: rgba(255, 255, 255, 0.331);\n}\n#banner-269265797 .bg {\n  background-position: 58% 63%;\n}\n<\/style>\n  <\/div>\n\n\n     <\/div>\n\n     <div class=\"loading-spin dark large centered\"><\/div>\n\n\t<\/div>\n\n\n<div class=\"row\"  id=\"row-1149741815\">\n\n\t<div id=\"col-2032631576\" class=\"col small-12 large-12\"  >\n\t\t\t\t<div class=\"col-inner\"  >\n\t\t\t\n\t\t\t\n<h1>Yawei Transformer Glossary A\u2013Z<\/h1>\n<p>This glossary page provides a comprehensive <strong>A\u2013Z index of over 100 transformer-related terms<\/strong>, including specialized vocabulary for <strong>UHV transformers, 500kV systems, 1200MVA units<\/strong>, and global power transmission contexts. Each entry includes detailed explanations for SEO-rich content, technical clarity, and industry relevance.<\/p>\n<div contenteditable=\"false\">\n<hr \/>\n<\/div>\n<h2>A<\/h2>\n<p><strong>Ambient Temperature<\/strong>: The surrounding temperature where the transformer operates. Critical for calculating transformer ratings, thermal performance, and insulation life, especially in UHV 500kV and 1200MVA units.<\/p>\n<p><strong>Air Insulated Switchgear (AIS)<\/strong>: Switchgear using air as the primary insulation medium. Often paired with high-voltage transformers for utility substations.<\/p>\n<p><strong>Auto-transformer<\/strong>: A transformer with a single winding that acts as both primary and secondary. Used for voltage regulation in high-capacity systems.<\/p>\n<p><strong>Ampere (A)<\/strong>: Unit of electric current. Essential for calculating transformer load, thermal limits, and current carrying capacity.<\/p>\n<p><strong>Active Power (P)<\/strong>: The real power delivered by a transformer, measured in watts or megawatts. Determines transformer sizing in large-scale UHV projects.<\/p>\n<div contenteditable=\"false\">\n<hr \/>\n<\/div>\n<h2>B<\/h2>\n<p><strong>BIL (Basic Insulation Level)<\/strong>: A standard defining transformer insulation capability against voltage surges. Key in 500kV and UHV transformer designs.<\/p>\n<p><strong>Breakdown Voltage<\/strong>: The voltage at which transformer insulation fails. Critical for safety, reliability, and long-term operation.<\/p>\n<p><strong>Busbar<\/strong>: Conductors used to connect transformers to distribution or transmission networks, enabling multiple circuits.<\/p>\n<p><strong>Bushings<\/strong>: Insulated devices allowing conductors to pass through transformer tanks safely. High-voltage bushings are critical for 500kV and UHV systems.<\/p>\n<p><strong>Bypass Switch<\/strong>: A switch used to divert current around a transformer for maintenance or operational flexibility.<\/p>\n<div contenteditable=\"false\">\n<hr \/>\n<\/div>\n<h2>C<\/h2>\n<p><strong>Cooling Oil<\/strong>: Mineral or synthetic oil used in oil-immersed transformers for heat dissipation. Important in UHV 500kV transformers for maintaining safe temperature rise.<\/p>\n<p><strong>Core<\/strong>: The magnetic core of a transformer that guides flux and reduces losses. Constructed from high-grade silicon steel.<\/p>\n<p><strong>Current Transformer (CT)<\/strong>: Device that scales down high currents for measurement and protection systems.<\/p>\n<p><strong>Conservator Tank<\/strong>: Oil expansion tank for transformers allowing volume changes due to thermal expansion.<\/p>\n<p><strong>Capacitive Voltage Transformer (CVT)<\/strong>: Measures high voltage for metering and protection in transmission networks.<\/p>\n<div contenteditable=\"false\">\n<hr \/>\n<\/div>\n<h2>D<\/h2>\n<p><strong>Delta Connection (\u0394)<\/strong>: Transformer winding configuration forming a closed loop. Common in three-phase systems.<\/p>\n<p><strong>Dielectric Strength<\/strong>: Measure of insulation\u2019s ability to withstand voltage stress. Vital for UHV transformers.<\/p>\n<p><strong>Distribution Transformer<\/strong>: Transforms medium voltage to low voltage for final delivery to consumers.<\/p>\n<p><strong>Damping<\/strong>: Methods to reduce oscillations or mechanical vibrations in transformer windings.<\/p>\n<p><strong>Direct Current (DC)<\/strong>: Flow of electric charge in one direction. Special transformers convert AC to DC for industrial applications.<\/p>\n<div contenteditable=\"false\">\n<hr \/>\n<\/div>\n<h2>E<\/h2>\n<p><strong>Eddy Currents<\/strong>: Circulating currents in transformer cores causing energy loss. Minimized with laminated cores.<\/p>\n<p><strong>Energy Efficiency<\/strong>: Measurement of input power versus output power. High-efficiency designs reduce losses in 1200MVA transformers.<\/p>\n<p><strong>Excitation Current<\/strong>: Current required to magnetize the transformer core, influencing no-load losses.<\/p>\n<p><strong>Electrical Insulation<\/strong>: Material preventing current flow between conductive parts. Essential in all transformer classes.<\/p>\n<p><strong>Earth Fault<\/strong>: Short circuit between phase and ground. Protection devices rely on CTs and relays to detect and isolate faults.<\/p>\n<div contenteditable=\"false\">\n<hr \/>\n<\/div>\n<h2>F<\/h2>\n<p><strong>Feeder<\/strong>: Conductor delivering power from the transformer to distribution circuits.<\/p>\n<p><strong>Frequency (Hz)<\/strong>: Alternating current cycles per second. Transformers designed for standard frequencies (50Hz or 60Hz).<\/p>\n<p><strong>Furnace Transformer<\/strong>: Special-purpose transformer for electric furnaces, designed for high short-circuit currents.<\/p>\n<p><strong>Fluid-Immersed Transformer<\/strong>: Transformer immersed in dielectric fluid, usually mineral oil, for cooling and insulation.<\/p>\n<p><strong>Fault Current<\/strong>: High current during short circuits; transformer and switchgear ratings must consider this for safety.<\/p>\n<div contenteditable=\"false\">\n<hr \/>\n<\/div>\n<h2>G<\/h2>\n<p><strong>Generator Step-Up Transformer (GSU)<\/strong>: Connects power generators to the high-voltage transmission network, stepping up voltage to 500kV or higher.<\/p>\n<p><strong>Grounding Transformer<\/strong>: Provides neutral grounding in ungrounded systems to stabilize voltage and limit fault currents.<\/p>\n<p><strong>Grid Stability<\/strong>: Ability of the power system to maintain consistent voltage and frequency under varying loads and faults.<\/p>\n<p><strong>Gas-Insulated Transformer (GIT)<\/strong>: Transformers using SF6 or other insulating gases, often in compact urban substations.<\/p>\n<p><strong>Gap Cooling<\/strong>: Method to improve heat dissipation in transformers by designing airflow or fluid gaps.<\/p>\n<div contenteditable=\"false\">\n<hr \/>\n<\/div>\n<h2>H<\/h2>\n<p><strong>Harmonics<\/strong>: Voltage or current deviations from pure sine waves, impacting transformer heating and lifetime.<\/p>\n<p><strong>HV (High Voltage)<\/strong>: Generally 66kV\u2013220kV; UHV refers to voltages like 500kV.<\/p>\n<p><strong>Hot-Spot Temperature<\/strong>: Maximum temperature within transformer windings, used to determine aging and insulation life.<\/p>\n<p><strong>Hybrid Transformer<\/strong>: Transformer combining multiple core or winding technologies to optimize efficiency.<\/p>\n<p><strong>Hydraulic Control<\/strong>: Systems regulating tap changers and cooling oil circulation in large transformers.<\/p>\n<div contenteditable=\"false\">\n<hr \/>\n<\/div>\n<h2>I<\/h2>\n<p><strong>Impedance (Z)<\/strong>: Opposition to AC current flow, determining short-circuit currents and voltage drop.<\/p>\n<p><strong>Insulating Oil<\/strong>: Fluid providing dielectric strength and cooling. Key for 500kV oil-immersed units.<\/p>\n<p><strong>Insulation Class<\/strong>: Rating of temperature tolerance of transformer insulation.<\/p>\n<p><strong>Isolation Transformer<\/strong>: Provides galvanic separation between circuits for safety or voltage matching.<\/p>\n<p><strong>Intelligent Monitoring<\/strong>: Digital sensors for real-time transformer diagnostics and predictive maintenance.<\/p>\n<div contenteditable=\"false\">\n<hr \/>\n<\/div>\n<h2>J<\/h2>\n<p><strong>Joule Losses<\/strong>: Heat losses due to resistance in windings, calculated for efficiency improvement.<\/p>\n<p><strong>Jacket Cooling<\/strong>: Cooling method where oil circulates in an external jacket around transformer windings.<\/p>\n<p><strong>Jumpers<\/strong>: Short conductors used to connect transformer terminals to busbars or circuits.<\/p>\n<p><strong>Jointing<\/strong>: Proper connection of windings, leads, and terminals to reduce resistance and heating.<\/p>\n<p><strong>Junction Box<\/strong>: Protective enclosure for transformer connections and control devices.<\/p>\n<div contenteditable=\"false\">\n<hr \/>\n<\/div>\n<h2>K<\/h2>\n<p><strong>KVA Rating<\/strong>: Transformer apparent power capacity, critical for sizing in 500kV, 1200MVA installations.<\/p>\n<p><strong>K-factor<\/strong>: Transformer rating for handling non-linear loads, protecting against harmonic heating.<\/p>\n<p><strong>Kilovolts (kV)<\/strong>: Voltage unit. 500kV and above is considered UHV.<\/p>\n<p><strong>Keyed Tap Changer<\/strong>: Mechanically selected tap changer for voltage regulation.<\/p>\n<p><strong>Kelvin Measurement<\/strong>: Temperature measurement at specific points, often for winding hot spots.<\/p>\n<div contenteditable=\"false\">\n<hr \/>\n<\/div>\n<h2>L<\/h2>\n<p><strong>Load Tap Changer (LTC)<\/strong>: Adjusts transformer output voltage under load conditions, essential in large grids.<\/p>\n<p><strong>Leakage Reactance<\/strong>: Reactance due to flux leakage; affects voltage regulation.<\/p>\n<p><strong>Liquid-Filled Transformer<\/strong>: Transformer immersed in dielectric oil for insulation and cooling.<\/p>\n<p><strong>Line Drop Compensation<\/strong>: LTC control to maintain voltage at distribution endpoints.<\/p>\n<p><strong>Lightning Impulse Test<\/strong>: Tests transformer insulation against transient voltage surges.<\/p>\n<div contenteditable=\"false\">\n<hr \/>\n<\/div>\n<h2>M<\/h2>\n<p><strong>Magnetic Core<\/strong>: Core guiding flux; reduces hysteresis and eddy current losses.<\/p>\n<p><strong>Magnetizing Current<\/strong>: Current required to establish flux in transformer core.<\/p>\n<p><strong>Medium Voltage (MV)<\/strong>: 1kV\u201335kV range for distribution transformers.<\/p>\n<p><strong>Moisture Content<\/strong>: Water in insulation or oil reduces dielectric strength; critical for UHV transformer reliability.<\/p>\n<p><strong>Maintenance Schedule<\/strong>: Planned inspection, testing, and servicing to extend transformer life.<\/p>\n<div contenteditable=\"false\">\n<hr \/>\n<\/div>\n<h2>N<\/h2>\n<p><strong>Neutral Point<\/strong>: Connection point of three-phase transformer windings; grounding affects fault protection.<\/p>\n<p><strong>No-Load Losses<\/strong>: Losses when transformer operates without load; minimized in high-efficiency designs.<\/p>\n<p><strong>Noise Level<\/strong>: Audible transformer noise; compliance needed for urban installations.<\/p>\n<p><strong>NEMA Standards<\/strong>: North American regulatory standards for electrical equipment.<\/p>\n<p><strong>Nominal Voltage<\/strong>: Standard voltage rating for system compatibility.<\/p>\n<div contenteditable=\"false\">\n<hr \/>\n<\/div>\n<h2>O<\/h2>\n<p><strong>Oil Preservation System<\/strong>: Maintains oil volume and prevents moisture ingress.<\/p>\n<p><strong>Open Delta (V-Connection)<\/strong>: Two-transformer configuration to supply three-phase power when one unit is unavailable.<\/p>\n<p><strong>Overload Capacity<\/strong>: Transformer ability to handle temporary excess load.<\/p>\n<p><strong>Overvoltage Protection<\/strong>: Devices or design features preventing insulation failure.<\/p>\n<p><strong>Outdoor Transformer<\/strong>: Designed for open-air installations with weatherproof enclosures.<\/p>\n<div contenteditable=\"false\">\n<hr \/>\n<\/div>\n<h2>P<\/h2>\n<p><strong>Partial Discharge (PD)<\/strong>: Localized insulation breakdown; early indicator of potential transformer failure.<\/p>\n<p><strong>Power Factor<\/strong>: Ratio of active to apparent power; impacts transformer efficiency.<\/p>\n<p><strong>Protective Relay<\/strong>: Device triggering circuit breakers under fault conditions.<\/p>\n<p><strong>Phase Shift<\/strong>: Voltage angle difference between primary and secondary; important for load sharing.<\/p>\n<p><strong>Pulley Cooling<\/strong>: Mechanical system driving fans for forced cooling.<\/p>\n<div contenteditable=\"false\">\n<hr \/>\n<\/div>\n<h2>Q<\/h2>\n<p><strong>Quality Assurance (QA)<\/strong>: Systematic process ensuring transformers meet specifications.<\/p>\n<p><strong>Quick Tap Change<\/strong>: Fast adjustment of voltage using on-load tap changer.<\/p>\n<p><strong>Quenching<\/strong>: Cooling process to prevent overheating in special-purpose transformers.<\/p>\n<p><strong>Quantity of Oil<\/strong>: Correct volume ensures optimal cooling in large-capacity transformers.<\/p>\n<p><strong>Quarter-Wave Resonance<\/strong>: Electrical resonance issue considered in HV design.<\/p>\n<div contenteditable=\"false\">\n<hr \/>\n<\/div>\n<h2>R<\/h2>\n<p><strong>Rated Capacity<\/strong>: Maximum designed load a transformer can carry.<\/p>\n<p><strong>Rated Voltage<\/strong>: Nominal voltage at which transformer operates efficiently.<\/p>\n<p><strong>Reactive Power (Q)<\/strong>: Non-working power influencing voltage regulation.<\/p>\n<p><strong>Rectifier Transformer<\/strong>: Converts AC to DC for industrial and traction applications.<\/p>\n<p><strong>Regulation<\/strong>: Voltage change under load; critical for system stability.<\/p>\n<div contenteditable=\"false\">\n<hr \/>\n<\/div>\n<h2>S<\/h2>\n<p><strong>Short-Circuit Impedance<\/strong>: Determines fault current and voltage drop.<\/p>\n<p><strong>Substation Transformer<\/strong>: Transformers installed in substations for voltage step-up\/down.<\/p>\n<p><strong>Saturated Core<\/strong>: Core operating beyond linear flux; increases losses and heating.<\/p>\n<p><strong>SF6 Insulated Transformer<\/strong>: Uses sulfur hexafluoride gas for insulation, common in compact urban installations.<\/p>\n<p><strong>Step-Up Transformer<\/strong>: Increases voltage from generator output to transmission levels, e.g., 500kV.<\/p>\n<div contenteditable=\"false\">\n<hr \/>\n<\/div>\n<h2>T<\/h2>\n<p><strong>Tap Changer<\/strong>: Adjusts voltage by changing winding connections.<\/p>\n<p><strong>Thermal Rating<\/strong>: Maximum temperature transformer can withstand safely.<\/p>\n<p><strong>Three-Phase Transformer<\/strong>: Common in transmission and distribution networks.<\/p>\n<p><strong>Transformer Oil Testing<\/strong>: Ensures dielectric strength and contamination levels are acceptable.<\/p>\n<p><strong>Tripping Mechanism<\/strong>: Activates breaker during fault conditions.<\/p>\n<div contenteditable=\"false\">\n<hr \/>\n<\/div>\n<h2>U<\/h2>\n<p><strong>UHV (Ultra-High Voltage)<\/strong>: Voltage levels above 800kV AC; specialized design required.<\/p>\n<p><strong>Unbalanced Load<\/strong>: Unequal phase loading; affects transformer losses and efficiency.<\/p>\n<p><strong>Upstream Network<\/strong>: Portion of the grid supplying transformer primary side.<\/p>\n<p><strong>Under-Load Tap Changer (ULTC)<\/strong>: Adjusts voltage while transformer is operating.<\/p>\n<p><strong>Utility-Grade Transformer<\/strong>: Designed for high reliability and long life in power grids.<\/p>\n<div contenteditable=\"false\">\n<hr \/>\n<\/div>\n<h2>V<\/h2>\n<p><strong>Vector Group<\/strong>: Defines winding connection type and phase displacement.<\/p>\n<p><strong>Voltage Regulation<\/strong>: Control of output voltage under varying loads.<\/p>\n<p><strong>Vacuum Circuit Breaker (VCB)<\/strong>: Switchgear for high-voltage protection.<\/p>\n<p><strong>Ventilation<\/strong>: Forced or natural air movement for cooling dry-type transformers.<\/p>\n<p><strong>Voltage Class<\/strong>: Standardized rating for transformer insulation.<\/p>\n<div contenteditable=\"false\">\n<hr \/>\n<\/div>\n<h2>W<\/h2>\n<p><strong>Winding Resistance<\/strong>: Electrical resistance of transformer windings.<\/p>\n<p><strong>Watt Loss<\/strong>: Power loss due to resistance and core losses.<\/p>\n<p><strong>Water-Cooled Transformer<\/strong>: Cooling using water for large capacity or specialized installations.<\/p>\n<p><strong>Waveform Distortion<\/strong>: Non-sinusoidal waveform affecting transformer operation.<\/p>\n<p><strong>Wind Farm Transformer<\/strong>: Custom transformer for renewable energy integration.<\/p>\n<div contenteditable=\"false\">\n<hr \/>\n<\/div>\n<h2>X<\/h2>\n<p><strong>X\/R Ratio<\/strong>: Ratio of reactance to resistance; affects short-circuit calculations.<\/p>\n<p><strong>X-mer Transformer<\/strong>: Special designation for experimental or prototype transformers.<\/p>\n<p><strong>XHV (Extra-High Voltage)<\/strong>: Voltages from 345kV to 800kV; above HV and MV.<\/p>\n<p><strong>X-Phase Shift<\/strong>: Phase angle modification for power flow optimization.<\/p>\n<p><strong>X-Connected Windings<\/strong>: Custom winding connection to manage harmonics and load sharing.<\/p>\n<div contenteditable=\"false\">\n<hr \/>\n<\/div>\n<h2>Y<\/h2>\n<p><strong>Y-Delta Connection<\/strong>: Winding configuration combining star and delta for phase balancing.<\/p>\n<p><strong>Yyn0 Transformer<\/strong>: Common distribution transformer vector group.<\/p>\n<p><strong>Yield Strength<\/strong>: Mechanical property of transformer tank material.<\/p>\n<p><strong>Yearly Maintenance<\/strong>: Routine checks for reliability and extended transformer life.<\/p>\n<p><strong>Yellow Oil Indicator<\/strong>: Visual sign for oil quality and contamination.<\/p>\n<div contenteditable=\"false\">\n<hr \/>\n<\/div>\n<h2>Z<\/h2>\n<p><strong>Zinc-Coated Tank<\/strong>: Corrosion-resistant transformer enclosure.<\/p>\n<p><strong>Zero Sequence Current<\/strong>: Ground fault current measurement.<\/p>\n<p><strong>Zone Protection<\/strong>: Protective relay arrangement isolating faulted section.<\/p>\n<p><strong>Zig-Zag Transformer<\/strong>: Used for grounding and phase-shifting.<\/p>\n<p><strong>Z-Phase Monitoring<\/strong>: Measurement for advanced diagnostics and fault detection.<\/p>\n\n<div class=\"wpcf7 no-js\" id=\"wpcf7-f280-o1\" lang=\"en-US\" dir=\"ltr\" data-wpcf7-id=\"280\">\n<div class=\"screen-reader-response\"><p role=\"status\" aria-live=\"polite\" aria-atomic=\"true\"><\/p> <ul><\/ul><\/div>\n<form 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\"left\",\"wrapAround\": true,\"prevNextButtons\": true,\"percentPosition\": true,\"pageDots\": false, \"rightToLeft\": false, \"autoPlay\" : false}' >\n\n  <div class=\"col post-item\" data-animate=\"fadeInLeft\">\n\t\t\t<div class=\"col-inner\">\n\t\t\t\t<div class=\"box box-text-bottom box-blog-post has-hover\">\n            \t\t\t\t\t<div class=\"box-image\" >\n  \t\t\t\t\t\t<div class=\"image-cover\" style=\"padding-top:70%;\">\n\t\t\t\t\t\t\t<a href=\"https:\/\/yawei-powertransformer.com\/zh\/international-client-visit-to-yawei-transformer-factory-in-depth-inspection-of-a-110kv-33kv-40mva-power-transformer\/\" class=\"plain\" aria-label=\"International Client Visit to Yawei Transformer Factory: In-Depth Inspection of a 110kV\/33kV 40MVA Power Transformer\">\n\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"200\" src=\"https:\/\/yawei-powertransformer.com\/wp-content\/uploads\/2026\/04\/International-Client-Visit-to-Yawei-Transformer-Factory-In-Depth-Inspection-of-a-110kV33kV-40MVA-Power-Transformer-300x200.webp\" class=\"attachment-medium size-medium wp-post-image\" alt=\"International client visiting Yawei transformer factory for in-depth inspection of a 110kV\/33kV 40MVA power transformer during manufacturing and testing\" srcset=\"https:\/\/yawei-powertransformer.com\/wp-content\/uploads\/2026\/04\/International-Client-Visit-to-Yawei-Transformer-Factory-In-Depth-Inspection-of-a-110kV33kV-40MVA-Power-Transformer-300x200.webp 300w, https:\/\/yawei-powertransformer.com\/wp-content\/uploads\/2026\/04\/International-Client-Visit-to-Yawei-Transformer-Factory-In-Depth-Inspection-of-a-110kV33kV-40MVA-Power-Transformer-768x512.webp 768w, https:\/\/yawei-powertransformer.com\/wp-content\/uploads\/2026\/04\/International-Client-Visit-to-Yawei-Transformer-Factory-In-Depth-Inspection-of-a-110kV33kV-40MVA-Power-Transformer-18x12.webp 18w, https:\/\/yawei-powertransformer.com\/wp-content\/uploads\/2026\/04\/International-Client-Visit-to-Yawei-Transformer-Factory-In-Depth-Inspection-of-a-110kV33kV-40MVA-Power-Transformer-600x400.webp 600w, https:\/\/yawei-powertransformer.com\/wp-content\/uploads\/2026\/04\/International-Client-Visit-to-Yawei-Transformer-Factory-In-Depth-Inspection-of-a-110kV33kV-40MVA-Power-Transformer.webp 900w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/>\t\t\t\t\t\t\t<\/a>\n  \t\t\t\t\t\t\t  \t\t\t\t\t\t\t  \t\t\t\t\t\t<\/div>\n  \t\t\t\t\t\t  \t\t\t\t\t<\/div>\n          \t\t\t\t\t<div class=\"box-text text-center\" >\n\t\t\t\t\t<div class=\"box-text-inner blog-post-inner\">\n\n\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t<h5 class=\"post-title is-large \">\n\t\t\t\t\t\t<a href=\"https:\/\/yawei-powertransformer.com\/zh\/international-client-visit-to-yawei-transformer-factory-in-depth-inspection-of-a-110kv-33kv-40mva-power-transformer\/\" class=\"plain\">International Client Visit to Yawei Transformer Factory: In-Depth Inspection of a 110kV\/33kV 40MVA Power Transformer<\/a>\n\t\t\t\t\t<\/h5>\n\t\t\t\t\t\t\t\t\t\t<div class=\"is-divider\"><\/div>\n\t\t\t\t\t\t\t\t\t\t<p class=\"from_the_blog_excerpt \">\n\t\t\t\t\t\tIntroduction: Building Trust Through Transparency In the global power transmission and distribution industry, trust is [...]\t\t\t\t\t<\/p>\n\t\t\t\t\t                    \n\t\t\t\t\t\n\t\t\t\t\t\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"badge absolute top post-date badge-outline\">\n\t\t\t\t\t\t\t<div class=\"badge-inner\">\n\t\t\t\t\t\t\t\t<span class=\"post-date-day\">16<\/span><br>\n\t\t\t\t\t\t\t\t<span class=\"post-date-month is-xsmall\">4 \u6708<\/span>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t<\/div><div class=\"col post-item\" data-animate=\"fadeInLeft\">\n\t\t\t<div class=\"col-inner\">\n\t\t\t\t<div class=\"box box-text-bottom box-blog-post has-hover\">\n            \t\t\t\t\t<div class=\"box-image\" >\n  \t\t\t\t\t\t<div class=\"image-cover\" style=\"padding-top:70%;\">\n\t\t\t\t\t\t\t<a href=\"https:\/\/yawei-powertransformer.com\/zh\/250mva-345kv-power-transformer-for-north-america-ready-for-testing-and-shipment\/\" class=\"plain\" aria-label=\"250MVA 345kV Power Transformer for North America: Ready for Testing and Shipment\">\n\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"200\" src=\"https:\/\/yawei-powertransformer.com\/wp-content\/uploads\/2026\/04\/250MVA-345kV-Power-Transformer-for-North-America-Ready-for-Testing-and-Shipment-300x200.webp\" class=\"attachment-medium size-medium wp-post-image\" alt=\"250MVA 345kV power transformer for North America ready for testing and shipment, IEEE compliant high voltage substation transformer manufactured in China\" srcset=\"https:\/\/yawei-powertransformer.com\/wp-content\/uploads\/2026\/04\/250MVA-345kV-Power-Transformer-for-North-America-Ready-for-Testing-and-Shipment-300x200.webp 300w, https:\/\/yawei-powertransformer.com\/wp-content\/uploads\/2026\/04\/250MVA-345kV-Power-Transformer-for-North-America-Ready-for-Testing-and-Shipment-768x512.webp 768w, https:\/\/yawei-powertransformer.com\/wp-content\/uploads\/2026\/04\/250MVA-345kV-Power-Transformer-for-North-America-Ready-for-Testing-and-Shipment-18x12.webp 18w, https:\/\/yawei-powertransformer.com\/wp-content\/uploads\/2026\/04\/250MVA-345kV-Power-Transformer-for-North-America-Ready-for-Testing-and-Shipment-600x400.webp 600w, https:\/\/yawei-powertransformer.com\/wp-content\/uploads\/2026\/04\/250MVA-345kV-Power-Transformer-for-North-America-Ready-for-Testing-and-Shipment.webp 900w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/>\t\t\t\t\t\t\t<\/a>\n  \t\t\t\t\t\t\t  \t\t\t\t\t\t\t  \t\t\t\t\t\t<\/div>\n  \t\t\t\t\t\t  \t\t\t\t\t<\/div>\n          \t\t\t\t\t<div class=\"box-text text-center\" >\n\t\t\t\t\t<div class=\"box-text-inner blog-post-inner\">\n\n\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t<h5 class=\"post-title is-large \">\n\t\t\t\t\t\t<a href=\"https:\/\/yawei-powertransformer.com\/zh\/250mva-345kv-power-transformer-for-north-america-ready-for-testing-and-shipment\/\" class=\"plain\">250MVA 345kV Power Transformer for North America: Ready for Testing and Shipment<\/a>\n\t\t\t\t\t<\/h5>\n\t\t\t\t\t\t\t\t\t\t<div class=\"is-divider\"><\/div>\n\t\t\t\t\t\t\t\t\t\t<p class=\"from_the_blog_excerpt \">\n\t\t\t\t\t\tPowering Large-Scale Grids Across North America As North America continues to upgrade its transmission infrastructure, [...]\t\t\t\t\t<\/p>\n\t\t\t\t\t                    \n\t\t\t\t\t\n\t\t\t\t\t\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"badge absolute top post-date badge-outline\">\n\t\t\t\t\t\t\t<div class=\"badge-inner\">\n\t\t\t\t\t\t\t\t<span class=\"post-date-day\">14<\/span><br>\n\t\t\t\t\t\t\t\t<span class=\"post-date-month is-xsmall\">4 \u6708<\/span>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t<\/div><div class=\"col post-item\" data-animate=\"fadeInLeft\">\n\t\t\t<div class=\"col-inner\">\n\t\t\t\t<div class=\"box box-text-bottom box-blog-post has-hover\">\n            \t\t\t\t\t<div class=\"box-image\" >\n  \t\t\t\t\t\t<div class=\"image-cover\" style=\"padding-top:70%;\">\n\t\t\t\t\t\t\t<a href=\"https:\/\/yawei-powertransformer.com\/zh\/china-power-transformer-manufacturer-expands-yawei-chengdu-factory-update-2026\/\" class=\"plain\" aria-label=\"China Power Transformer Manufacturer Expands Yawei Chengdu Factory Update 2026\">\n\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"210\" src=\"https:\/\/yawei-powertransformer.com\/wp-content\/uploads\/2026\/04\/Yawei-Transformer-Chengdu-Factory-Visit-April-9-2026-Expanding-in-Southwest-China-Serving-Global-Markets-300x210.webp\" class=\"attachment-medium size-medium wp-post-image\" alt=\"Yawei Transformer Chengdu factory visit on April 9, 2026 showing construction progress and expansion for global power transformer manufacturing\" srcset=\"https:\/\/yawei-powertransformer.com\/wp-content\/uploads\/2026\/04\/Yawei-Transformer-Chengdu-Factory-Visit-April-9-2026-Expanding-in-Southwest-China-Serving-Global-Markets-300x210.webp 300w, https:\/\/yawei-powertransformer.com\/wp-content\/uploads\/2026\/04\/Yawei-Transformer-Chengdu-Factory-Visit-April-9-2026-Expanding-in-Southwest-China-Serving-Global-Markets-768x538.webp 768w, https:\/\/yawei-powertransformer.com\/wp-content\/uploads\/2026\/04\/Yawei-Transformer-Chengdu-Factory-Visit-April-9-2026-Expanding-in-Southwest-China-Serving-Global-Markets-18x12.webp 18w, https:\/\/yawei-powertransformer.com\/wp-content\/uploads\/2026\/04\/Yawei-Transformer-Chengdu-Factory-Visit-April-9-2026-Expanding-in-Southwest-China-Serving-Global-Markets-600x420.webp 600w, https:\/\/yawei-powertransformer.com\/wp-content\/uploads\/2026\/04\/Yawei-Transformer-Chengdu-Factory-Visit-April-9-2026-Expanding-in-Southwest-China-Serving-Global-Markets.webp 1000w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/>\t\t\t\t\t\t\t<\/a>\n  \t\t\t\t\t\t\t  \t\t\t\t\t\t\t  \t\t\t\t\t\t<\/div>\n  \t\t\t\t\t\t  \t\t\t\t\t<\/div>\n          \t\t\t\t\t<div class=\"box-text text-center\" >\n\t\t\t\t\t<div class=\"box-text-inner blog-post-inner\">\n\n\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t<h5 class=\"post-title is-large \">\n\t\t\t\t\t\t<a href=\"https:\/\/yawei-powertransformer.com\/zh\/china-power-transformer-manufacturer-expands-yawei-chengdu-factory-update-2026\/\" class=\"plain\">China Power Transformer Manufacturer Expands Yawei Chengdu Factory Update 2026<\/a>\n\t\t\t\t\t<\/h5>\n\t\t\t\t\t\t\t\t\t\t<div class=\"is-divider\"><\/div>\n\t\t\t\t\t\t\t\t\t\t<p class=\"from_the_blog_excerpt \">\n\t\t\t\t\t\tA Strategic Milestone in Yawei Transformer\u2019s Global Expansion On April 9, 2026, a delegation of [...]\t\t\t\t\t<\/p>\n\t\t\t\t\t                    \n\t\t\t\t\t\n\t\t\t\t\t\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"badge absolute top post-date badge-outline\">\n\t\t\t\t\t\t\t<div class=\"badge-inner\">\n\t\t\t\t\t\t\t\t<span class=\"post-date-day\">10<\/span><br>\n\t\t\t\t\t\t\t\t<span class=\"post-date-month is-xsmall\">4 \u6708<\/span>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t<\/div><div class=\"col post-item\" data-animate=\"fadeInLeft\">\n\t\t\t<div class=\"col-inner\">\n\t\t\t\t<div class=\"box box-text-bottom box-blog-post has-hover\">\n            \t\t\t\t\t<div class=\"box-image\" >\n  \t\t\t\t\t\t<div class=\"image-cover\" style=\"padding-top:70%;\">\n\t\t\t\t\t\t\t<a href=\"https:\/\/yawei-powertransformer.com\/zh\/yawei-transformer-at-canton-fair-2026-powering-global-markets-with-a-strong-north-america-focus\/\" class=\"plain\" aria-label=\"Yawei Transformer at Canton Fair 2026: Powering Global Markets with a Strong North America Focus\">\n\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"200\" src=\"https:\/\/yawei-powertransformer.com\/wp-content\/uploads\/2026\/04\/Yawei-Transformer-at-Canton-Fair-2026-Powering-Global-Markets-with-a-Strong-North-America-Focus-300x200.webp\" class=\"attachment-medium size-medium wp-post-image\" alt=\"Yawei Transformer at the 139th Canton Fair 2026 showcasing global power transformer solutions with a strong focus on the USA and Canada markets\" srcset=\"https:\/\/yawei-powertransformer.com\/wp-content\/uploads\/2026\/04\/Yawei-Transformer-at-Canton-Fair-2026-Powering-Global-Markets-with-a-Strong-North-America-Focus-300x200.webp 300w, https:\/\/yawei-powertransformer.com\/wp-content\/uploads\/2026\/04\/Yawei-Transformer-at-Canton-Fair-2026-Powering-Global-Markets-with-a-Strong-North-America-Focus-768x512.webp 768w, https:\/\/yawei-powertransformer.com\/wp-content\/uploads\/2026\/04\/Yawei-Transformer-at-Canton-Fair-2026-Powering-Global-Markets-with-a-Strong-North-America-Focus-18x12.webp 18w, https:\/\/yawei-powertransformer.com\/wp-content\/uploads\/2026\/04\/Yawei-Transformer-at-Canton-Fair-2026-Powering-Global-Markets-with-a-Strong-North-America-Focus-600x400.webp 600w, https:\/\/yawei-powertransformer.com\/wp-content\/uploads\/2026\/04\/Yawei-Transformer-at-Canton-Fair-2026-Powering-Global-Markets-with-a-Strong-North-America-Focus.webp 900w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/>\t\t\t\t\t\t\t<\/a>\n  \t\t\t\t\t\t\t  \t\t\t\t\t\t\t  \t\t\t\t\t\t<\/div>\n  \t\t\t\t\t\t  \t\t\t\t\t<\/div>\n          \t\t\t\t\t<div class=\"box-text text-center\" >\n\t\t\t\t\t<div class=\"box-text-inner blog-post-inner\">\n\n\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t<h5 class=\"post-title is-large \">\n\t\t\t\t\t\t<a href=\"https:\/\/yawei-powertransformer.com\/zh\/yawei-transformer-at-canton-fair-2026-powering-global-markets-with-a-strong-north-america-focus\/\" class=\"plain\">Yawei Transformer at Canton Fair 2026: Powering Global Markets with a Strong North America Focus<\/a>\n\t\t\t\t\t<\/h5>\n\t\t\t\t\t\t\t\t\t\t<div class=\"is-divider\"><\/div>\n\t\t\t\t\t\t\t\t\t\t<p class=\"from_the_blog_excerpt \">\n\t\t\t\t\t\tAs global energy demand continues to expand, the need for reliable and efficient power infrastructure [...]\t\t\t\t\t<\/p>\n\t\t\t\t\t                    \n\t\t\t\t\t\n\t\t\t\t\t\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"badge absolute top post-date badge-outline\">\n\t\t\t\t\t\t\t<div class=\"badge-inner\">\n\t\t\t\t\t\t\t\t<span class=\"post-date-day\">07<\/span><br>\n\t\t\t\t\t\t\t\t<span class=\"post-date-month is-xsmall\">4 \u6708<\/span>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t<\/div><\/div>\n\n<p><iframe src=\"https:\/\/www.google.com\/maps\/embed?pb=!1m18!1m12!1m3!1d3442.8545055097147!2d103.89776507653906!3d30.355084603784157!2m3!1f0!2f0!3f0!3m2!1i1024!2i768!4f13.1!3m3!1m2!1s0x36ef97c28e8fda99%3A0x711dc8c53030ca6e!2s280%20Qingliang%20E%20Rd%2C%20Xin%20Jin%20Xian%2C%20Cheng%20Du%20Shi%2C%20Si%20Chuan%20Sheng%2C%20China%2C%20611435!5e0!3m2!1sen!2sus!4v1774507262191!5m2!1sen!2sus\" width=\"100%\" height=\"500\" style=\"border:0;\" allowfullscreen=\"\" loading=\"lazy\" referrerpolicy=\"no-referrer-when-downgrade\"><\/iframe><br \/>\n\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":3,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"page-blank.php","meta":{"footnotes":""},"class_list":["post-1849","page","type-page","status-publish","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.6 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>China Power Transformer Glossary for Global Power Markets | Yawei Transformer<\/title>\n<meta name=\"description\" content=\"Discover the China power transformer glossary by Yawei Transformer, covering UHV, 500kV, and 1200MVA terminology for global power, utility, and EPC markets.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/yawei-powertransformer.com\/zh\/glossaries\/\" \/>\n<meta property=\"og:locale\" content=\"zh_HK\" \/>\n<meta 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