{"id":168,"date":"2026-06-22T12:20:57","date_gmt":"2026-06-22T04:20:57","guid":{"rendered":"https:\/\/accessories.huaquanpower.net\/?page_id=168"},"modified":"2026-06-22T12:20:57","modified_gmt":"2026-06-22T04:20:57","slug":"leroy-somer-parts","status":"publish","type":"page","link":"https:\/\/accessories.huaquanpower.net\/?page_id=168","title":{"rendered":"Leroy Somer Alternator Parts"},"content":{"rendered":"<h2>Leroy Somer Alternator Parts for Diesel Generators<\/h2>\n<p>Leroy Somer (part of Nidec Group) is a leading manufacturer of alternators for power generation, with over 50 years of experience. Their LSA series alternators are widely used in standby, prime, and continuous power generator sets from 10kVA to 6000kVA. At Huaquan Power, we supply a full range of <strong>Leroy Somer alternator parts<\/strong> for LSA42, LSA44, and LSA46 series alternators.<\/p>\n<h3>AVR and Voltage Regulation Parts<\/h3>\n<ul>\n<li><strong>Automatic Voltage Regulators<\/strong> \u2014 R130, R150, R180, and D510 AVR units for precise voltage control<\/li>\n<li><strong>AVR Accessories<\/strong> \u2014 Droop kits, quadrature droop CTs, and paralleling accessories for multi-set operation<\/li>\n<li><strong>Voltage Adjustment Potentiometers<\/strong> \u2014 Remote voltage adjustment rheostats and potentiometers<\/li>\n<li><strong>AVR Fuses and Protection<\/strong> \u2014 Replacement fuses and protection modules for AVR circuits<\/li>\n<\/ul>\n<h3>Rotating Diode and Excitation Components<\/h3>\n<ul>\n<li><strong>Rotating Diode Assemblies<\/strong> \u2014 Complete rectifier wheel assemblies for LSA42, LSA44, LSA46 alternators<\/li>\n<li><strong>Individual Diodes<\/strong> \u2014 Positive and negative diodes for diode wheel replacement<\/li>\n<li><strong>Surge Suppressors<\/strong> \u2014 Voltage transient protection devices for diode protection<\/li>\n<li><strong>Excitation Coils<\/strong> \u2014 Exciter stator and rotor winding assemblies<\/li>\n<li><strong>PMG Assemblies<\/strong> \u2014 Permanent magnet generator assemblies for shunt and AREP excitation systems<\/li>\n<\/ul>\n<h3>Stator and Rotor Assemblies<\/h3>\n<ul>\n<li><strong>Stator Assemblies<\/strong> \u2014 Complete stator winding assemblies for all LSA series alternators<\/li>\n<li><strong>Rotor Assemblies<\/strong> \u2014 Main rotor assemblies balanced and ready for installation<\/li>\n<li><strong>Bearings<\/strong> \u2014 Drive-end and non-drive-end bearings for Leroy Somer alternators<\/li>\n<li><strong>Seals and Gaskets<\/strong> \u2014 Bearing retainer seals and O-rings for bearing housing<\/li>\n<\/ul>\n<h3>Terminal Box and Connection Components<\/h3>\n<ul>\n<li><strong>Terminal Blocks<\/strong> \u2014 Main output terminal blocks and connection bars<\/li>\n<li><strong>Current Transformers<\/strong> \u2014 Protection and metering CTs for alternator output monitoring<\/li>\n<li><strong>Anti-Condensation Heaters<\/strong> \u2014 Space heaters for moisture prevention during standby operation<\/li>\n<li><strong>Cable Glands<\/strong> \u2014 IP55-rated cable entry glands for terminal box connections<\/li>\n<\/ul>\n<h3>Mechanical and Cooling Parts<\/h3>\n<ul>\n<li><strong>Cooling Fans<\/strong> \u2014 Axial cooling fan assemblies for proper heat dissipation<\/li>\n<li><strong>Coupling Adaptors<\/strong> \u2014 SAE housing adaptors and flexible coupling discs<\/li>\n<li><strong>Vibration Mounts<\/strong> \u2014 Rubber and spring vibration isolators for generator set mounting<\/li>\n<li><strong>Air Filters<\/strong> \u2014 Intake air filter elements for enclosed alternator installations<\/li>\n<\/ul>\n<h2>Frequently Asked Questions<\/h2>\n<h3>1. What Leroy Somer alternator models do you support?<\/h3>\n<p>We supply parts for Leroy Somer LSA42 (10-50kVA), LSA44 (50-300kVA), and LSA46 (300-6000kVA) series alternators. We also support the older LSA40, LSA43, LSA45 series and industrial MAC\/LSA series.<\/p>\n<h3>2. What is the difference between shunt and AREP excitation?<\/h3>\n<p>Shunt excitation draws power from the alternator output for field excitation \u2014 simpler but less suited for high starting kVA loads. AREP (Auxiliary Winding Regulation System) uses separate auxiliary windings providing more stable excitation, better short-circuit capability, and improved motor starting performance.<\/p>\n<h3>3. How do I select the correct AVR for my Leroy Somer alternator?<\/h3>\n<p>The AVR selection depends on your alternator model and excitation system. R130\/R150 for basic shunt systems, R180 for AREP systems, and D510 for advanced paralleling applications. Check the alternator nameplate for the standard AVR reference or contact our technical team.<\/p>\n<h3>4. Do you carry Leroy Somer rotating diode assemblies?<\/h3>\n<p>Yes, we stock rotating diode assemblies for all LSA series alternators. We supply complete rectifier wheel assemblies as well as individual diodes and surge suppressors for component-level repair.<\/p>\n<h3>5. What is the typical lifespan of a Leroy Somer alternator?<\/h3>\n<p>With proper maintenance, Leroy Somer alternators can operate for 20-30+ years. Key maintenance includes regular bearing replacement (every 20,000-30,000 hours), diode inspection, AVR checks, and winding insulation testing. We supply all maintenance parts to keep your alternator running reliably.<\/p>\n<h2>Contact Us for Leroy Somer Alternator Parts<\/h2>\n<p>For pricing, availability, and technical support on Leroy Somer alternator parts:<\/p>\n<ul>\n<li>\ud83d\udcf1 WhatsApp: <a href=\"https:\/\/wa.me\/8615905360672\">+86 15905360672<\/a><\/li>\n<li>\ud83d\udce7 Email: <a href=\"mailto:huaquan@huaquanpower.com\">huaquan@huaquanpower.com<\/a><\/li>\n<li>\ud83c\udf10 Website: <a href=\"https:\/\/accessories.huaquanpower.net\">huaquanpower.net<\/a><\/li>\n<\/ul>\n<h2>Related Pages<\/h2>\n<ul>\n<li><a href=\"\/stamford-parts\/\">Stamford Alternator Parts<\/a><\/li>\n<li><a href=\"\/marathon-parts\/\">Marathon Alternator Parts<\/a><\/li>\n<li><a href=\"\/mecc-alte-parts\/\">Mecc Alte Alternator Parts<\/a><\/li>\n<li><a href=\"\/diesel-generator-parts\/\">Diesel Generator Parts Overview<\/a><\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Leroy Somer Alternat [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"class_list":["post-168","page","type-page","status-publish","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.8 - 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