{"id":15519,"date":"2026-01-06T11:26:31","date_gmt":"2026-01-06T03:26:31","guid":{"rendered":"http:\/\/www.erun-tech.com\/?post_type=dt_portfolio&#038;p=15519"},"modified":"2026-01-06T11:26:31","modified_gmt":"2026-01-06T03:26:31","slug":"zhangwopeidianpanshangdeceliangyibiao-plcxianshipingdengderichangweihu","status":"publish","type":"dt_portfolio","link":"http:\/\/www.erun-tech.com\/en\/project\/zhangwopeidianpanshangdeceliangyibiao-plcxianshipingdengderichangweihu","title":{"rendered":"Perform routine maintenance on measurement instruments, PLCs, displays, and other equipment on the distribution panel."},"content":{"rendered":"<p>&nbsp;<\/p>\n<style>\n        :root {<br \/>\n            --primary-blue: #004a99;<br \/>\n            --secondary-blue: #0073e6;<br \/>\n            --bg-gray: #f8f9fa;<br \/>\n            --accent-orange: #f39c12;<br \/>\n            --border-color: #dee2e6;<br \/>\n        }<br \/>\n        body {<br \/>\n            font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif;<br \/>\n            line-height: 1.8;<br \/>\n            color: #333;<br \/>\n            max-width: 900px;<br \/>\n            margin: 0 auto;<br \/>\n            padding: 30px 20px;<br \/>\n            background-color: #f0f2f5;<br \/>\n        }<br \/>\n        .article-card {<br \/>\n            background: #fff;<br \/>\n            padding: 40px;<br \/>\n            border-radius: 10px;<br \/>\n            box-shadow: 0 4px 12px rgba(0,0,0,0.1);<br \/>\n        }<br \/>\n        h1 {<br \/>\n            color: var(--primary-blue);<br \/>\n            text-align: center;<br \/>\n            border-bottom: 3px solid var(--primary-blue);<br \/>\n            padding-bottom: 15px;<br \/>\n            margin-bottom: 30px;<br \/>\n        }<br \/>\n        h2 {<br \/>\n            color: #fff;<br \/>\n            background: var(--primary-blue);<br \/>\n            padding: 10px 20px;<br \/>\n            border-radius: 4px;<br \/>\n            margin-top: 35px;<br \/>\n            font-size: 1.4em;<br \/>\n        }<br \/>\n        p { margin-bottom: 15px; text-align: justify; }<br \/>\n        .checklist {<br \/>\n            background-color: #eef6ff;<br \/>\n            border: 1px solid #b8daff;<br \/>\n            padding: 20px;<br \/>\n            border-radius: 6px;<br \/>\n            margin: 20px 0;<br \/>\n        }<br \/>\n        .checklist strong { color: var(--secondary-blue); }<br \/>\n        .maintenance-tag {<br \/>\n            display: inline-block;<br \/>\n            background: var(--accent-orange);<br \/>\n            color: white;<br \/>\n            padding: 2px 10px;<br \/>\n            border-radius: 20px;<br \/>\n            font-size: 0.85em;<br \/>\n            margin-right: 8px;<br \/>\n        }<br \/>\n        ul { padding-left: 20px; margin-bottom: 20px; }<br \/>\n        li { margin-bottom: 12px; }<br \/>\n        .footer {<br \/>\n            text-align: center;<br \/>\n            margin-top: 40px;<br \/>\n            font-size: 0.9em;<br \/>\n            color: #888;<br \/>\n            border-top: 1px solid #eee;<br \/>\n            padding-top: 20px;<br \/>\n        }<br \/>\n    <\/style>\n<p>&nbsp;<\/p>\n<div class=\"article-card\">\n<h1>Daily maintenance and management of measuring instruments, PLCs and displays on switchboards<\/h1>\n<p>In a ship's electrical system, the measuring instruments, PLC controllers and displays in the switchboard (main distribution board) are the core of operation monitoring. Ensuring the reliability of these precision components relies not only on meticulous daily inspections, but also on the strict implementation of regular calibration and maintenance programs.<\/p>\n<h2>I. Maintenance and care of measuring instruments, PLCs and displays on switchboards<\/h2>\n<div class=\"checklist\">\n<ul>\n<li><strong>(1) Routine inspections:<\/strong> Measuring instruments, switches, PLC controllers should be checked whether the wiring, indicator lights are intact, whether the relevant instructions and displays are normal, if any abnormality should be repaired or replaced in a timely manner.<\/li>\n<li><strong>(2) <span class=\"maintenance-tag\">Every 4 years<\/span> Calibration:<\/strong> Measuring instruments should be calibrated every 4 years.<\/li>\n<li><strong>(3) <span class=\"maintenance-tag\">every month<\/span> Check:<\/strong> Once a month, check whether the movable parts of the main switch are moving normally, whether the fasteners are loose, and whether the adjustable part is deformed or shifted, etc. If abnormalities are found, corresponding measures should be taken in time.<\/li>\n<li><strong>(4) <span class=\"maintenance-tag\">semi-annually<\/span> Maintenance:<\/strong> Every six months to check whether the closing operation mechanism is flexible and reliable; clean the soot on the arc extinguishing cover and grille; keep the contact surface clean; check whether the overload and voltage loss protection device and its time delay device are normal and reliable.<\/li>\n<li><strong>(5) <span class=\"maintenance-tag\">Every 4-5 years<\/span> Calibration:<\/strong> Overload, short-circuit and under-voltage set values are calibrated every 4~5 years.<\/li>\n<li><strong>(6) <span class=\"maintenance-tag\">semi-annually<\/span> Check:<\/strong> Check facilities such as rectifier diodes of the magnetizing unit every six months to prevent backflow.<\/li>\n<\/ul>\n<\/div>\n<h2>II. Monitoring and management of switchboard operation<\/h2>\n<p>The real-time monitoring of the operation status is the basis for guaranteeing the reasonable and economic operation of the power system, and the specific management requirements are as follows:<\/p>\n<ul>\n<li><strong>(1) Recording and observation:<\/strong> Observe the meter readings (e.g., voltage, frequency, current, power, etc.) on the switchboard and make notes.<\/li>\n<li><strong>(2) Operational optimization:<\/strong> According to the working conditions, the generators are operated in parallel or unlinked, so that the power station can be operated reasonably and economically.<\/li>\n<li><strong>(3) Power allocation management:<\/strong> Observe whether the power distribution among the parallel generator sets is reasonable. If it is not reasonable, it should be manually adjusted and made to be reasonably distributed. The alternator phase currents shall not differ by 10% and each phase current shall not exceed the rated value.<\/li>\n<li><strong>(4) Pressure regulator monitoring:<\/strong> Check the voltage regulator of the operating generator for any abnormal vibration or sound. If there is any abnormality, identify the cause and troubleshoot the problem.<\/li>\n<li><strong>(5) Physical status monitoring:<\/strong> Watch for sparking of the generator slip ring.<\/li>\n<\/ul>\n<div class=\"footer\">Ship's Electrical and Electronics Officer (ETO) Practice and Management Reference Manual<\/div>\n<\/div>\n<p>&nbsp;<\/p>","protected":false},"excerpt":{"rendered":"<p>&nbsp; &nbsp; Daily Maintenance and Management of Measuring Instruments, PLCs, and Displays on Distribution Panels In shipboard electrical systems, distribution panels (main distribution panels...)<\/p>","protected":false},"author":1,"featured_media":15520,"comment_status":"open","ping_status":"closed","template":"","dt_portfolio_category":[891],"dt_portfolio_tags":[],"class_list":["post-15519","dt_portfolio","type-dt_portfolio","status-publish","has-post-thumbnail","hentry","dt_portfolio_category-dianzidianqiyuanshicaopinggukecheng","dt_portfolio_category-891","description-off"],"_links":{"self":[{"href":"http:\/\/www.erun-tech.com\/en\/wp-json\/wp\/v2\/dt_portfolio\/15519","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/www.erun-tech.com\/en\/wp-json\/wp\/v2\/dt_portfolio"}],"about":[{"href":"http:\/\/www.erun-tech.com\/en\/wp-json\/wp\/v2\/types\/dt_portfolio"}],"author":[{"embeddable":true,"href":"http:\/\/www.erun-tech.com\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.erun-tech.com\/en\/wp-json\/wp\/v2\/comments?post=15519"}],"version-history":[{"count":1,"href":"http:\/\/www.erun-tech.com\/en\/wp-json\/wp\/v2\/dt_portfolio\/15519\/revisions"}],"predecessor-version":[{"id":15521,"href":"http:\/\/www.erun-tech.com\/en\/wp-json\/wp\/v2\/dt_portfolio\/15519\/revisions\/15521"}],"wp:featuredmedia":[{"embeddable":true,"href":"http:\/\/www.erun-tech.com\/en\/wp-json\/wp\/v2\/media\/15520"}],"wp:attachment":[{"href":"http:\/\/www.erun-tech.com\/en\/wp-json\/wp\/v2\/media?parent=15519"}],"wp:term":[{"taxonomy":"dt_portfolio_category","embeddable":true,"href":"http:\/\/www.erun-tech.com\/en\/wp-json\/wp\/v2\/dt_portfolio_category?post=15519"},{"taxonomy":"dt_portfolio_tags","embeddable":true,"href":"http:\/\/www.erun-tech.com\/en\/wp-json\/wp\/v2\/dt_portfolio_tags?post=15519"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}