{"id":932,"date":"2026-09-11T11:30:00","date_gmt":"2026-09-11T03:30:00","guid":{"rendered":"https:\/\/powerquality.sg\/wordpress\/?p=932"},"modified":"2026-09-11T11:40:20","modified_gmt":"2026-09-11T03:40:20","slug":"voltage-variation-01-09-2026-1042-pm","status":"publish","type":"post","link":"https:\/\/powerquality.sg\/wordpress\/?p=932","title":{"rendered":"Voltage Variation 01\/09\/2026 10:42 PM"},"content":{"rendered":"\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/powerquality.sg\/wordpress\/wp-content\/uploads\/2026\/09\/LV-jurong-pier.jpg\"><img decoding=\"async\" loading=\"lazy\" width=\"940\" height=\"573\" src=\"https:\/\/powerquality.sg\/wordpress\/wp-content\/uploads\/2026\/09\/LV-jurong-pier.jpg\" alt=\"\" class=\"wp-image-935\" srcset=\"https:\/\/powerquality.sg\/wordpress\/wp-content\/uploads\/2026\/09\/LV-jurong-pier.jpg 940w, https:\/\/powerquality.sg\/wordpress\/wp-content\/uploads\/2026\/09\/LV-jurong-pier-300x183.jpg 300w, https:\/\/powerquality.sg\/wordpress\/wp-content\/uploads\/2026\/09\/LV-jurong-pier-768x468.jpg 768w\" sizes=\"(max-width: 940px) 100vw, 940px\" \/><\/a><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/powerquality.sg\/wordpress\/wp-content\/uploads\/2026\/09\/1-9-2026-rvc1.jpg\"><img decoding=\"async\" loading=\"lazy\" width=\"1024\" height=\"550\" src=\"https:\/\/powerquality.sg\/wordpress\/wp-content\/uploads\/2026\/09\/1-9-2026-rvc1-1024x550.jpg\" alt=\"\" class=\"wp-image-936\" srcset=\"https:\/\/powerquality.sg\/wordpress\/wp-content\/uploads\/2026\/09\/1-9-2026-rvc1-1024x550.jpg 1024w, https:\/\/powerquality.sg\/wordpress\/wp-content\/uploads\/2026\/09\/1-9-2026-rvc1-300x161.jpg 300w, https:\/\/powerquality.sg\/wordpress\/wp-content\/uploads\/2026\/09\/1-9-2026-rvc1-768x412.jpg 768w, https:\/\/powerquality.sg\/wordpress\/wp-content\/uploads\/2026\/09\/1-9-2026-rvc1.jpg 1177w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/a><\/figure>\n\n\n\n<ul>\n<li>An example of voltage dip propagation.<\/li>\n\n\n\n<li>The first set of waveforms\/trend was from a Low Voltage site in around Jurong Pier area. It captured a voltage variation (of almost 7.3% drop) on the 1\/9\/2026 10:42PM.<\/li>\n\n\n\n<li>This was caused by a fault at an adjacent 22kV (connected to this LV site by the 66kV -> 22kV &#8211; > LV path). <\/li>\n\n\n\n<li>Based on the event trend\/waveform here, the fault was likely on the L1-L2 phase.<\/li>\n\n\n\n<li>The same incident was also captured on my home&#8217;s PQUBE3 (as a Rapid Voltage Change). My home is a 20-minute drive from this LV site. This proved that the LV site, my home and the faulted site are inter-connected at 66kV. <\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image size-full\"><a href=\"http:\/\/powerquality.sg\/wordpress\/wp-content\/uploads\/2019\/07\/voltage-dip-propagation.png\"><img decoding=\"async\" loading=\"lazy\" width=\"472\" height=\"484\" src=\"http:\/\/powerquality.sg\/wordpress\/wp-content\/uploads\/2019\/07\/voltage-dip-propagation.png\" alt=\"\" class=\"wp-image-477\" srcset=\"https:\/\/powerquality.sg\/wordpress\/wp-content\/uploads\/2019\/07\/voltage-dip-propagation.png 472w, https:\/\/powerquality.sg\/wordpress\/wp-content\/uploads\/2019\/07\/voltage-dip-propagation-293x300.png 293w\" sizes=\"(max-width: 472px) 100vw, 472px\" \/><\/a><\/figure>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":1,"featured_media":204,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_newsletter_tier_id":0,"jetpack_publicize_message":"","jetpack_is_tweetstorm":false,"jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","enabled":false}}},"categories":[13,10],"tags":[],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"https:\/\/powerquality.sg\/wordpress\/wp-content\/uploads\/2014\/03\/fig1-definition.png","jetpack_shortlink":"https:\/\/wp.me\/p41TEZ-f2","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/powerquality.sg\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/932"}],"collection":[{"href":"https:\/\/powerquality.sg\/wordpress\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/powerquality.sg\/wordpress\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/powerquality.sg\/wordpress\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/powerquality.sg\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=932"}],"version-history":[{"count":5,"href":"https:\/\/powerquality.sg\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/932\/revisions"}],"predecessor-version":[{"id":939,"href":"https:\/\/powerquality.sg\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/932\/revisions\/939"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/powerquality.sg\/wordpress\/index.php?rest_route=\/wp\/v2\/media\/204"}],"wp:attachment":[{"href":"https:\/\/powerquality.sg\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=932"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/powerquality.sg\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=932"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/powerquality.sg\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=932"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}