{"id":7323,"date":"2023-05-12T09:56:34","date_gmt":"2023-05-12T07:56:34","guid":{"rendered":"https:\/\/wp.delphin.de\/?post_type=glossar&#038;p=7323"},"modified":"2026-06-24T12:51:47","modified_gmt":"2026-06-24T10:51:47","slug":"external-tension","status":"publish","type":"glossar","link":"https:\/\/www.delphin.de\/en\/glossar\/fremdspannung\/","title":{"rendered":"External voltage"},"content":{"rendered":"<p class=\"wp-block-paragraph\"><strong>External voltage<\/strong> is voltage that, due to the nature of the system (hidden or unintended), is present across the terminals of a connected device in a circuit via the wires of components, sensors, or actuators.\u00a0<\/p>\n\n\n<div class=\"gb-container gb-container-e2850d57\">\n\n<h4 class=\"wp-block-heading\">What is an external voltage?<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">Under\u00a0<strong>External voltage\u00a0<\/strong>is voltage that occurs in a system either hidden or unintentionally. This external voltage can be caused by a source of interference, for example, and is connected to the components of an electrical system.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">This means that this external voltage is applied to sensors, actuators or the terminals of a connected device via the cables of an electrical system and can be measured there.<\/p>\n\n<\/div>\n\n<div class=\"gb-container gb-container-95b3fe61\">\n\n<h4 class=\"wp-block-heading\">External voltage in measurement technology<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">External voltage distorts the measurement signal in a PLC or measuring devices that are connected to sensors and can also cause damage.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">In particular, unintentional or incorrectly set up connections to circuits with earth leakage can lead to personal injury.<\/p>\n\n<\/div>\n\n<div class=\"gb-container gb-container-9c01fe83\">\n\n<h4 class=\"wp-block-heading\">External voltage in sound engineering and music systems<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">In audio systems and audio systems, external voltage can lead to an interference level. This results in unwanted humming or noise.&nbsp;<\/p>\n\n<\/div>\n\n<div class=\"gb-container gb-container-0e394b23\">\n\n<h4 class=\"wp-block-heading\">Causes of external tension<\/h4>\n\n\n\n<ol class=\"wp-block-list\">\n<li><em>Contact with live 230V alternating current cables<\/em>&nbsp;by devices or sensors, e.g. if the temperature in the immediate vicinity of these lines is measured.<\/li>\n\n\n\n<li><em>Coupling of 230V mains voltage<\/em>&nbsp;via a connection between the actuator and downstream MCR components.<\/li>\n<\/ol>\n\n<\/div>","protected":false},"featured_media":0,"template":"","class_list":["post-7323","glossar","type-glossar","status-publish","hentry"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.delphin.de\/en\/wp-json\/wp\/v2\/glossar\/7323","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.delphin.de\/en\/wp-json\/wp\/v2\/glossar"}],"about":[{"href":"https:\/\/www.delphin.de\/en\/wp-json\/wp\/v2\/types\/glossar"}],"wp:attachment":[{"href":"https:\/\/www.delphin.de\/en\/wp-json\/wp\/v2\/media?parent=7323"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}