{"id":1744,"date":"2021-03-14T09:58:21","date_gmt":"2021-03-14T01:58:21","guid":{"rendered":"https:\/\/marellispares.com\/demo\/?post_type=product&#038;p=1744"},"modified":"2026-01-02T20:25:17","modified_gmt":"2026-01-02T12:25:17","slug":"m40fa640a-automatic-voltage-regulator","status":"publish","type":"product","link":"https:\/\/marellispares.com\/shop\/product\/m40fa640a-automatic-voltage-regulator\/","title":{"rendered":"M40FA640A &#8211; Automatic Voltage Regulator"},"content":{"rendered":"<p>The voltage regulator type &#8220;MARK I&#8221;, is suitable for synchronous generators for Marelli make MJB series, size range 160-500 frames. The regulator is proper to operate on machines rated from 10 up to 2000kVA. The regulator is fully insulated in order to maintain high reliability also with severe ambient conditions (high level of humidity, dust, salt atmosphere), and in case of high vibrations level. The regulator is proper both for single and 3-phase operation.<\/p>\n<p><strong>Technical Data:<\/strong><br \/>\n&#8211; Regulation Accuracy: +\/- 0.5% steady state conditions<br \/>\n&#8211; Voltage Drift: +\/- 0.5% voltage for 50 \u00b0 C amb. temperature change<br \/>\n&#8211; Respond Time: 1 cycle (20ms &#8211; 16.6ms)<br \/>\n&#8211; Operating Temperature: -30 \u00b0 C &#8211; 70 \u00b0 C<br \/>\n&#8211; Exciter Field Resistance: 3.5 \u2126 (min) \u00f7 20 \u2126 (max)<br \/>\n&#8211; Supply Voltage: 170 -277 V (50\/60Hz)<br \/>\n&#8211; Power Supply: 1000VA (max)<br \/>\n&#8211; Power Dissipated: 30 W (max)<br \/>\n&#8211; Voltage Sensing: 170 -270 \/ 380 &#8211; 415 \/ 440 &#8211; 480 V (Three or Single Phase Sensing)<br \/>\n&#8211; Output voltage (DC): 30 V<br \/>\n&#8211; Output Current (DC): 8 A (max, continuous)<br \/>\n&#8211; Output current (DC): 15 A (max one minute forcing)<\/p>\n","protected":false},"excerpt":{"rendered":"<h6>Marelli AVR M40FA640A \/A for MJB 250, 315, 355, 400, 450 and 500.<\/h6>\n","protected":false},"featured_media":1833,"template":"","meta":{"site-sidebar-layout":"default","site-content-layout":"default","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":"default","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"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":""},"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-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":"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":""},"mobile":{"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":""}}},"product_brand":[],"product_cat":[47],"product_tag":[48,49,111,51,52,112,53],"class_list":{"0":"post-1744","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-avr-automatic-voltage-regulator","7":"product_tag-automatic-voltage-regulator","8":"product_tag-avr","9":"product_tag-m40fa640a","10":"product_tag-marelli","11":"product_tag-marellispares","12":"product_tag-mark-i","13":"product_tag-spare-parts","14":"desktop-align-left","15":"tablet-align-left","16":"mobile-align-left","18":"first","19":"instock","20":"taxable","21":"shipping-taxable","22":"purchasable","23":"product-type-simple"},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>M40FA640A - Automatic Voltage Regulator - One Stop Shop Online<\/title>\n<meta name=\"description\" content=\"Your One Stop Shop Online . 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