{"id":987507452,"date":"2019-08-19T15:38:54","date_gmt":"2019-08-19T14:38:54","guid":{"rendered":"https:\/\/tpmatrix.co.uk\/?post_type=project&#038;p=987507452"},"modified":"2026-07-31T09:36:12","modified_gmt":"2026-07-31T08:36:12","slug":"revision-general-de-4000-fuentes-de-alimentacion-de-la-clase-390","status":"publish","type":"project","link":"https:\/\/tpmatrix.co.uk\/es\/project\/overhaul-of-4000-class-390-power-supply-units\/","title":{"rendered":"Revisi\u00f3n general de 4000 fuentes de alimentaci\u00f3n de la Clase 390"},"content":{"rendered":"<p>[et_pb_section fb_built=&#8221;1&#8243; custom_padding_last_edited=&#8221;on|tablet&#8221; _builder_version=&#8221;4.27.6&#8243; _module_preset=&#8221;default&#8221; use_background_color_gradient=&#8221;on&#8221; background_color_gradient_direction=&#8221;90deg&#8221; background_color_gradient_stops=&#8221;rgba(31,37,50,0.82) 0%|rgba(31,37,50,0.11) 100%&#8221; background_color_gradient_overlays_image=&#8221;on&#8221; background_image=&#8221;https:\/\/tpmatrix.co.uk\/wp-content\/uploads\/2026\/07\/Minuet-train-edited.jpg&#8221; 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disabled_on=&#8221;on|on|off&#8221; _builder_version=&#8221;4.23.1&#8243; _module_preset=&#8221;default&#8221; positioning=&#8221;absolute&#8221; vertical_offset=&#8221;-38px&#8221; horizontal_offset=&#8221;-66px&#8221; max_width=&#8221;154px&#8221; custom_margin=&#8221;0px||0px||false|false&#8221; custom_padding=&#8221;0px||0px||false|false&#8221; global_colors_info=&#8221;{}&#8221;][\/et_pb_image][et_pb_image src=&#8221;https:\/\/tpmatrix.co.uk\/wp-content\/uploads\/2026\/07\/Class-390-PSU-Overhaul.png&#8221; title_text=&#8221;Class-390-PSU-Overhaul&#8221; force_fullwidth=&#8221;on&#8221; _builder_version=&#8221;4.27.6&#8243; _module_preset=&#8221;default&#8221; max_width_tablet=&#8221;&#8221; max_width_phone=&#8221;&#8221; max_width_last_edited=&#8221;on|phone&#8221; custom_margin=&#8221;0px||0px||false|false&#8221; custom_padding=&#8221;0px||0px||false|false&#8221; sticky_position=&#8221;top&#8221; sticky_offset_top=&#8221;130px&#8221; sticky_limit_bottom=&#8221;row&#8221; sticky_position_tablet=&#8221;none&#8221; sticky_position_phone=&#8221;none&#8221; sticky_position_last_edited=&#8221;on|desktop&#8221; border_radii=&#8221;on|8px|8px|8px|8px&#8221; global_colors_info=&#8221;{}&#8221;][\/et_pb_image][\/et_pb_column][et_pb_column type=&#8221;3_5&#8243; module_class=&#8221;pa-inline-buttons&#8221; _builder_version=&#8221;4.27.6&#8243; _module_preset=&#8221;default&#8221; custom_padding=&#8221;|||10px|false|false&#8221; custom_padding_tablet=&#8221;70px|||0px|false|false&#8221; custom_padding_phone=&#8221;55px||||false|false&#8221; custom_padding_last_edited=&#8221;on|tablet&#8221; global_colors_info=&#8221;{}&#8221; custom_css_main_element_last_edited=&#8221;on|desktop&#8221; custom_css_main_element_tablet=&#8221;order: 1;&#8221; custom_css_main_element_phone=&#8221;order: 1;&#8221;][et_pb_text content_tablet=&#8221;<\/p>\n<h2>TP Matrix were invited to provide a proposal to overhaul 4000 Power Supply Units consisting of 5V DC &#038; 24V DC units.<\/h2>\n<p>&#8221; content_phone=&#8221;<\/p>\n<h2>TP Matrix were invited to provide a proposal to overhaul 4000 Power Supply Units consisting of 5V DC &#038; 24V DC units.<\/h2>\n<p>&#8221; content_last_edited=&#8221;on|desktop&#8221; admin_label=&#8221;Title&#8221; _builder_version=&#8221;4.27.6&#8243; _module_preset=&#8221;default&#8221; header_2_font=&#8221;&#8211;et_global_heading_font|700|||||||&#8221; header_2_text_align=&#8221;left&#8221; header_2_text_color=&#8221;#1F2532&#8243; header_2_font_size=&#8221;36px&#8221; header_2_line_height=&#8221;1.2em&#8221; custom_margin=&#8221;0px||15px||false|false&#8221; custom_padding=&#8221;0px||0px||false|false&#8221; header_2_font_size_tablet=&#8221;34px&#8221; header_2_font_size_phone=&#8221;30px&#8221; header_2_font_size_last_edited=&#8221;on|phone&#8221; global_colors_info=&#8221;{}&#8221;]<\/p>\n<h2>TP Matrix were invited to provide a proposal to overhaul 4000 Power Supply Units consisting of 5V DC &amp; 24V DC units.<\/h2>\n<p>[\/et_pb_text][et_pb_text _builder_version=&#8221;4.27.6&#8243; _module_preset=&#8221;default&#8221; text_font=&#8221;&#8211;et_global_body_font||||||||&#8221; text_font_size=&#8221;17px&#8221; link_text_color=&#8221;#00AF4D&#8221; custom_margin=&#8221;0px||31px||false|false&#8221; custom_padding=&#8221;0px||0px||false|false&#8221; global_colors_info=&#8221;{}&#8221; link_text_color__hover_enabled=&#8221;on|hover&#8221; link_text_color__hover=&#8221;#1F2532&#8243;]<\/p>\n<p>The Class 390 Pendolino tilting trains have been in service since 2002 and following a routine assessment by maintenance company Alstom it was deemed the Auxiliary Converter Unit electronics should undergo an overhaul.<br \/>The ACU had developed increasingly repeat faults which could only be rectified by the OEM in Italy and with Brexit looming, future delays in the repair process were inevitable.<\/p>\n<p>TP Matrix were invited to provide a proposal to overhaul 4000 Power Supply Units consisting of 5V DC &amp; 24V DC units.<\/p>\n<p>A Condition Assessment was carried out on a small batch from which an Overhaul proposal was submitted and accepted by Alstom.<\/p>\n<p>The proposal included a recommended replacement of components confirmed to be approaching end of life and being the cause of the persistent failures. Test equipment was designed and built to provide a full functional test of the PSUs.<\/p>\n<p>The overhaul program is well underway at a rate of 76 units per week. TP Matrix routinely collect and deliver from the Longsight depot in Manchester hence taking the hassle out of packaging and transport for the customer. The units are delivered lineside ensuring ease of swap out for the depot staff.<\/p>\n<p>Since the program started, failures have reduced by ********<\/p>\n<p>TP Matrix will continue to support the products during the overhaul and beyond.<\/p>\n<p>[\/et_pb_text][\/et_pb_column][\/et_pb_row][et_pb_row _builder_version=&#8221;4.27.6&#8243; _module_preset=&#8221;default&#8221; width=&#8221;90%&#8221; max_width=&#8221;1296px&#8221; locked=&#8221;off&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_column type=&#8221;4_4&#8243; _builder_version=&#8221;4.27.6&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_post_nav prev_text=&#8221;Previous Case Study&#8221; next_text=&#8221;Next Case Study&#8221; _builder_version=&#8221;4.27.6&#8243; _module_preset=&#8221;default&#8221; title_font=&#8221;&#8211;et_global_heading_font|700|||||||&#8221; title_text_color=&#8221;#FFFFFF&#8221; title_font_size=&#8221;15px&#8221; width=&#8221;100%&#8221; custom_margin=&#8221;||60px||false|false&#8221; custom_margin_tablet=&#8221;||40px||false|false&#8221; custom_margin_phone=&#8221;||25px||false|false&#8221; custom_margin_last_edited=&#8221;on|tablet&#8221; title_font_size_tablet=&#8221;15px&#8221; title_font_size_phone=&#8221;14px&#8221; title_font_size_last_edited=&#8221;on|phone&#8221; custom_css_free_form=&#8221;.single-project.et_pb_pagebuilder_layout .nav-single {||    width: 100%;||    max-width: 1296px;||    margin: 10px auto;||}||&#8221; custom_css_prev_link=&#8221;color: #FFFFFF !important;||    border-color: #00AF4D;||    border-radius: 0px;||    letter-spacing: 0.5px;||    font-size: 15px;||    font-family: &#8216;Roboto&#8217;, Helvetica, Arial, Lucida, sans-serif !important;||    font-weight: 700 !important;||    background-color: #00AF4D;||padding-top: 14px !important;||    padding-right: 26px !important;||    padding-bottom: 15px !important;||    padding-left: 26px !important;||&#8221; custom_css_next_link=&#8221;color: #FFFFFF !important;||    border-color: #00AF4D;||    border-radius: 0px;||    letter-spacing: 0.5px;||    font-size: 15px;||    font-family: &#8216;Roboto&#8217;, Helvetica, Arial, Lucida, sans-serif !important;||    font-weight: 700 !important;||    background-color: #00AF4D;||padding-top: 14px !important;||    padding-right: 26px !important;||    padding-bottom: 15px !important;||    padding-left: 26px !important;||&#8221; locked=&#8221;off&#8221; global_colors_info=&#8221;{}&#8221; custom_css_prev_link__hover_enabled=&#8221;on|hover&#8221; custom_css_prev_link__hover=&#8221;color: #1F2532 !important;&#8221; custom_css_next_link__hover_enabled=&#8221;off|desktop&#8221; custom_css_next_link__hover=&#8221;color: #1F2532 !important;&#8221; custom_css_next_link_last_edited=&#8221;off|desktop&#8221;][\/et_pb_post_nav][\/et_pb_column][\/et_pb_row][\/et_pb_section]<\/p>\n","protected":false},"excerpt":{"rendered":"<p>TP Matrix were invited to provide a proposal to overhaul 4000 Power Supply Units consisting of 5V DC &amp; 24V DC units.The Class 390 Pendolino tilting trains have been in service since 2002 and following a routine assessment by maintenance company Alstom it was deemed the Auxiliary Converter Unit electronics should undergo an overhaul.The ACU had developed increasingly repeat faults which could only be rectified by the OEM in Italy and with Brexit looming, future delays in the repair process were inevitable. TP Matrix were invited to provide a proposal to overhaul 4000 Power Supply Units consisting of 5V DC &amp; 24V DC units. A Condition Assessment was carried out on a small batch from which an Overhaul proposal was submitted and accepted by Alstom. The proposal included a recommended replacement of components confirmed to be approaching end of life and being the cause of the persistent failures. Test equipment was designed and built to provide a full functional test of the PSUs. The overhaul program is well underway at a rate of 76 units per week. TP Matrix routinely collect and deliver from the Longsight depot in Manchester hence taking the hassle out of packaging and transport for the [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":987507455,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_et_pb_use_builder":"on","_et_pb_old_content":"","_et_gb_content_width":"","footnotes":""},"project_category":[],"project_tag":[],"class_list":["post-987507452","project","type-project","status-publish","has-post-thumbnail","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.1 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Overhaul of 4000 Class 390 Power Supply Units | TP Matrix<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/tpmatrix.co.uk\/es\/proyecto\/revision-general-de-4000-fuentes-de-alimentacion-de-la-clase-390\/\" \/>\n<meta property=\"og:locale\" content=\"es_ES\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Overhaul of 4000 Class 390 Power Supply Units | TP Matrix\" \/>\n<meta property=\"og:description\" content=\"TP Matrix were invited to provide a proposal to overhaul 4000 Power Supply Units consisting of 5V DC &amp; 24V DC units.The Class 390 Pendolino tilting trains have been in service since 2002 and following a routine assessment by maintenance company Alstom it was deemed the Auxiliary Converter Unit electronics should undergo an overhaul.The ACU had developed increasingly repeat faults which could only be rectified by the OEM in Italy and with Brexit looming, future delays in the repair process were inevitable. TP Matrix were invited to provide a proposal to overhaul 4000 Power Supply Units consisting of 5V DC &amp; 24V DC units. A Condition Assessment was carried out on a small batch from which an Overhaul proposal was submitted and accepted by Alstom. The proposal included a recommended replacement of components confirmed to be approaching end of life and being the cause of the persistent failures. Test equipment was designed and built to provide a full functional test of the PSUs. The overhaul program is well underway at a rate of 76 units per week. TP Matrix routinely collect and deliver from the Longsight depot in Manchester hence taking the hassle out of packaging and transport for the [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/tpmatrix.co.uk\/es\/proyecto\/revision-general-de-4000-fuentes-de-alimentacion-de-la-clase-390\/\" \/>\n<meta property=\"og:site_name\" content=\"TP Matrix\" \/>\n<meta property=\"article:modified_time\" content=\"2026-07-31T08:36:12+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/tpmatrix.co.uk\/wp-content\/uploads\/2026\/07\/Class-390-PSU-Overhaul.png\" \/>\n\t<meta property=\"og:image:width\" content=\"600\" \/>\n\t<meta property=\"og:image:height\" content=\"432\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Tiempo de lectura\" \/>\n\t<meta name=\"twitter:data1\" content=\"2 minutos\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/tpmatrix.co.uk\\\/project\\\/overhaul-of-4000-class-390-power-supply-units\\\/\",\"url\":\"https:\\\/\\\/tpmatrix.co.uk\\\/project\\\/overhaul-of-4000-class-390-power-supply-units\\\/\",\"name\":\"Overhaul of 4000 Class 390 Power Supply Units | TP Matrix\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/tpmatrix.co.uk\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/tpmatrix.co.uk\\\/project\\\/overhaul-of-4000-class-390-power-supply-units\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/tpmatrix.co.uk\\\/project\\\/overhaul-of-4000-class-390-power-supply-units\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/tpmatrix.co.uk\\\/wp-content\\\/uploads\\\/2026\\\/07\\\/Class-390-PSU-Overhaul.png\",\"datePublished\":\"2019-08-19T14:38:54+00:00\",\"dateModified\":\"2026-07-31T08:36:12+00:00\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/tpmatrix.co.uk\\\/project\\\/overhaul-of-4000-class-390-power-supply-units\\\/#breadcrumb\"},\"inLanguage\":\"es\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/tpmatrix.co.uk\\\/project\\\/overhaul-of-4000-class-390-power-supply-units\\\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"es\",\"@id\":\"https:\\\/\\\/tpmatrix.co.uk\\\/project\\\/overhaul-of-4000-class-390-power-supply-units\\\/#primaryimage\",\"url\":\"https:\\\/\\\/tpmatrix.co.uk\\\/wp-content\\\/uploads\\\/2026\\\/07\\\/Class-390-PSU-Overhaul.png\",\"contentUrl\":\"https:\\\/\\\/tpmatrix.co.uk\\\/wp-content\\\/uploads\\\/2026\\\/07\\\/Class-390-PSU-Overhaul.png\",\"width\":600,\"height\":432},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/tpmatrix.co.uk\\\/project\\\/overhaul-of-4000-class-390-power-supply-units\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/tpmatrix.co.uk\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Projects\",\"item\":\"https:\\\/\\\/tpmatrix.co.uk\\\/project\\\/\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"Overhaul of 4000 Class 390 Power Supply Units\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/tpmatrix.co.uk\\\/#website\",\"url\":\"https:\\\/\\\/tpmatrix.co.uk\\\/\",\"name\":\"TP Matrix\",\"description\":\"\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/tpmatrix.co.uk\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"es\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Revisi\u00f3n general de 4000 fuentes de alimentaci\u00f3n de la Clase 390 | TP Matrix","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/tpmatrix.co.uk\/es\/proyecto\/revision-general-de-4000-fuentes-de-alimentacion-de-la-clase-390\/","og_locale":"es_ES","og_type":"article","og_title":"Overhaul of 4000 Class 390 Power Supply Units | TP Matrix","og_description":"TP Matrix were invited to provide a proposal to overhaul 4000 Power Supply Units consisting of 5V DC &amp; 24V DC units.The Class 390 Pendolino tilting trains have been in service since 2002 and following a routine assessment by maintenance company Alstom it was deemed the Auxiliary Converter Unit electronics should undergo an overhaul.The ACU had developed increasingly repeat faults which could only be rectified by the OEM in Italy and with Brexit looming, future delays in the repair process were inevitable. TP Matrix were invited to provide a proposal to overhaul 4000 Power Supply Units consisting of 5V DC &amp; 24V DC units. A Condition Assessment was carried out on a small batch from which an Overhaul proposal was submitted and accepted by Alstom. The proposal included a recommended replacement of components confirmed to be approaching end of life and being the cause of the persistent failures. Test equipment was designed and built to provide a full functional test of the PSUs. The overhaul program is well underway at a rate of 76 units per week. 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