{"id":28319,"date":"2020-11-09T17:32:00","date_gmt":"2020-11-09T16:32:00","guid":{"rendered":"https:\/\/webentwicklung-hess.com\/mbs2023\/?p=28319"},"modified":"2024-11-05T18:16:11","modified_gmt":"2024-11-05T17:16:11","slug":"wickelstromwandler-in-der-niederspannung","status":"publish","type":"post","link":"https:\/\/mbs-ag.com\/wickelstromwandler-in-der-niederspannung\/","title":{"rendered":"Wickelstromwandler in der Niederspannung"},"content":{"rendered":"<style>.kb-row-layout-id28319_aa2d2b-f7 > .kt-row-column-wrap{align-content:start;}:where(.kb-row-layout-id28319_aa2d2b-f7 > .kt-row-column-wrap) > .wp-block-kadence-column{justify-content:start;}.kb-row-layout-id28319_aa2d2b-f7 > .kt-row-column-wrap{column-gap:var(--global-kb-gap-md, 2rem);row-gap:var(--global-kb-gap-md, 2rem);padding-top:var(--global-kb-spacing-sm, 1.5rem);padding-right:0px;padding-bottom:var(--global-kb-spacing-sm, 1.5rem);padding-left:0px;grid-template-columns:minmax(0, 1fr);}.kb-row-layout-id28319_aa2d2b-f7 > .kt-row-layout-overlay{opacity:0.30;}@media all and (max-width: 1024px){.kb-row-layout-id28319_aa2d2b-f7 > .kt-row-column-wrap{grid-template-columns:minmax(0, 1fr);}}@media all and (max-width: 767px){.kb-row-layout-id28319_aa2d2b-f7 > .kt-row-column-wrap{grid-template-columns:minmax(0, 1fr);}}<\/style><div class=\"kb-row-layout-wrap kb-row-layout-id28319_aa2d2b-f7 alignnone wp-block-kadence-rowlayout\"><div class=\"kt-row-column-wrap kt-has-1-columns kt-row-layout-equal kt-tab-layout-inherit kt-mobile-layout-row kt-row-valign-top\">\n<style>.kadence-column28319_8db72d-68 > .kt-inside-inner-col,.kadence-column28319_8db72d-68 > .kt-inside-inner-col:before{border-top-left-radius:0px;border-top-right-radius:0px;border-bottom-right-radius:0px;border-bottom-left-radius:0px;}.kadence-column28319_8db72d-68 > .kt-inside-inner-col{column-gap:var(--global-kb-gap-sm, 1rem);}.kadence-column28319_8db72d-68 > .kt-inside-inner-col{flex-direction:column;}.kadence-column28319_8db72d-68 > .kt-inside-inner-col > .aligncenter{width:100%;}.kadence-column28319_8db72d-68 > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column28319_8db72d-68{position:relative;}@media all and (max-width: 1024px){.kadence-column28319_8db72d-68 > .kt-inside-inner-col{flex-direction:column;}}@media all and (max-width: 767px){.kadence-column28319_8db72d-68 > .kt-inside-inner-col{flex-direction:column;}}<\/style>\n<div class=\"wp-block-kadence-column kadence-column28319_8db72d-68\"><div class=\"kt-inside-inner-col\"><style>.wp-block-kadence-advancedheading.kt-adv-heading28319_dbcd7d-61, .wp-block-kadence-advancedheading.kt-adv-heading28319_dbcd7d-61[data-kb-block=\"kb-adv-heading28319_dbcd7d-61\"]{font-weight:500;font-style:normal;}.wp-block-kadence-advancedheading.kt-adv-heading28319_dbcd7d-61 mark.kt-highlight, .wp-block-kadence-advancedheading.kt-adv-heading28319_dbcd7d-61[data-kb-block=\"kb-adv-heading28319_dbcd7d-61\"] mark.kt-highlight{font-style:normal;color:#f76a0c;-webkit-box-decoration-break:clone;box-decoration-break:clone;padding-top:0px;padding-right:0px;padding-bottom:0px;padding-left:0px;}<\/style>\n<h3 class=\"kt-adv-heading28319_dbcd7d-61 wp-block-kadence-advancedheading\" data-kb-block=\"kb-adv-heading28319_dbcd7d-61\">Grundlagen Wickel-Stromwandler in der Niederspannung<\/h3>\n\n<style>.wp-block-kadence-advancedheading.kt-adv-heading28319_ed0501-76, .wp-block-kadence-advancedheading.kt-adv-heading28319_ed0501-76[data-kb-block=\"kb-adv-heading28319_ed0501-76\"]{font-style:normal;}.wp-block-kadence-advancedheading.kt-adv-heading28319_ed0501-76 mark.kt-highlight, .wp-block-kadence-advancedheading.kt-adv-heading28319_ed0501-76[data-kb-block=\"kb-adv-heading28319_ed0501-76\"] mark.kt-highlight{font-style:normal;color:#f76a0c;-webkit-box-decoration-break:clone;box-decoration-break:clone;padding-top:0px;padding-right:0px;padding-bottom:0px;padding-left:0px;}<\/style>\n<p class=\"kt-adv-heading28319_ed0501-76 wp-block-kadence-advancedheading\" data-kb-block=\"kb-adv-heading28319_ed0501-76\">IIn der Praxis ist es oftmals erforderlich, Str\u00f6me im Nennstrombereich unterhalb von 100 A zu messen. Da die meisten zur Strommessung eingesetzten Messger\u00e4te jedoch nur \u00fcber 1\/5 A Messeing\u00e4nge verf\u00fcgen, kann maximal ein Strom von 5 A direkt mit dem Messger\u00e4t gemessen werden. Um Str\u00f6me zwischen 5 und 100 A messen zu k\u00f6nnen, werden in der Regel induktive Stromwandler eingesetzt. Der Einsatz von Durchsteck-Stromwandlern ist oftmals nicht m\u00f6glich.<\/p><\/div><\/div>\n<\/div><\/div><style>.kb-row-layout-id28319_d9ae68-4b > .kt-row-column-wrap{align-content:start;}:where(.kb-row-layout-id28319_d9ae68-4b > .kt-row-column-wrap) > .wp-block-kadence-column{justify-content:start;}.kb-row-layout-id28319_d9ae68-4b > .kt-row-column-wrap{column-gap:var(--global-kb-gap-md, 2rem);row-gap:var(--global-kb-gap-md, 2rem);padding-top:24px;padding-right:0px;padding-bottom:24px;padding-left:0px;grid-template-columns:minmax(0, 1fr);}.kb-row-layout-id28319_d9ae68-4b > .kt-row-layout-overlay{opacity:0.30;}@media all and (max-width: 1024px){.kb-row-layout-id28319_d9ae68-4b > .kt-row-column-wrap{grid-template-columns:minmax(0, 1fr);}}@media all and (max-width: 767px){.kb-row-layout-id28319_d9ae68-4b > .kt-row-column-wrap{grid-template-columns:minmax(0, 1fr);}}<\/style><div class=\"kb-row-layout-wrap kb-row-layout-id28319_d9ae68-4b alignnone wp-block-kadence-rowlayout\"><div class=\"kt-row-column-wrap kt-has-1-columns kt-row-layout-equal kt-tab-layout-inherit kt-mobile-layout-row kt-row-valign-top\">\n<style>.kadence-column28319_0b23e1-40 > .kt-inside-inner-col,.kadence-column28319_0b23e1-40 > .kt-inside-inner-col:before{border-top-left-radius:0px;border-top-right-radius:0px;border-bottom-right-radius:0px;border-bottom-left-radius:0px;}.kadence-column28319_0b23e1-40 > .kt-inside-inner-col{column-gap:var(--global-kb-gap-sm, 1rem);}.kadence-column28319_0b23e1-40 > .kt-inside-inner-col{flex-direction:column;}.kadence-column28319_0b23e1-40 > .kt-inside-inner-col > .aligncenter{width:100%;}.kadence-column28319_0b23e1-40 > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column28319_0b23e1-40{position:relative;}@media all and (max-width: 1024px){.kadence-column28319_0b23e1-40 > .kt-inside-inner-col{flex-direction:column;}}@media all and (max-width: 767px){.kadence-column28319_0b23e1-40 > .kt-inside-inner-col{flex-direction:column;}}<\/style>\n<div class=\"wp-block-kadence-column kadence-column28319_0b23e1-40\"><div class=\"kt-inside-inner-col\"><style>.kb-image28319_019ef6-2d .kb-image-has-overlay:after{opacity:0.3;}<\/style>\n<figure class=\"wp-block-kadence-image kb-image28319_019ef6-2d size-medium\"><img decoding=\"async\" src=\"https:\/\/mbs-ag.com\/en\/wp-content\/uploads\/sites\/2\/2024\/01\/PB_ASK-31.3-300x300.jpg\" alt=\"ASK 31.3 Niederspannungswandler\" class=\"kb-img wp-image-18282\"\/><figcaption><em>Abbildung 1: Durchsteck-Stromwandler ASK 31.3 (Prim\u00e4rwindung = 1) der MBS AG<\/em><\/figcaption><\/figure><\/div><\/div>\n<\/div><\/div><style>.kb-row-layout-id28319_e92127-17 > .kt-row-column-wrap{align-content:start;}:where(.kb-row-layout-id28319_e92127-17 > .kt-row-column-wrap) > .wp-block-kadence-column{justify-content:start;}.kb-row-layout-id28319_e92127-17 > .kt-row-column-wrap{column-gap:var(--global-kb-gap-md, 2rem);row-gap:var(--global-kb-gap-md, 2rem);padding-top:24px;padding-right:0px;padding-bottom:24px;padding-left:0px;grid-template-columns:minmax(0, 1fr);}.kb-row-layout-id28319_e92127-17 > .kt-row-layout-overlay{opacity:0.30;}@media all and (max-width: 1024px){.kb-row-layout-id28319_e92127-17 > .kt-row-column-wrap{grid-template-columns:minmax(0, 1fr);}}@media all and (max-width: 767px){.kb-row-layout-id28319_e92127-17 > .kt-row-column-wrap{grid-template-columns:minmax(0, 1fr);}}<\/style><div class=\"kb-row-layout-wrap kb-row-layout-id28319_e92127-17 alignnone wp-block-kadence-rowlayout\"><div class=\"kt-row-column-wrap kt-has-1-columns kt-row-layout-equal kt-tab-layout-inherit kt-mobile-layout-row kt-row-valign-top\">\n<style>.kadence-column28319_652467-47 > .kt-inside-inner-col,.kadence-column28319_652467-47 > .kt-inside-inner-col:before{border-top-left-radius:0px;border-top-right-radius:0px;border-bottom-right-radius:0px;border-bottom-left-radius:0px;}.kadence-column28319_652467-47 > .kt-inside-inner-col{column-gap:var(--global-kb-gap-sm, 1rem);}.kadence-column28319_652467-47 > .kt-inside-inner-col{flex-direction:column;}.kadence-column28319_652467-47 > .kt-inside-inner-col > .aligncenter{width:100%;}.kadence-column28319_652467-47 > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column28319_652467-47{position:relative;}@media all and (max-width: 1024px){.kadence-column28319_652467-47 > .kt-inside-inner-col{flex-direction:column;}}@media all and (max-width: 767px){.kadence-column28319_652467-47 > .kt-inside-inner-col{flex-direction:column;}}<\/style>\n<div class=\"wp-block-kadence-column kadence-column28319_652467-47\"><div class=\"kt-inside-inner-col\"><style>.wp-block-kadence-advancedheading.kt-adv-heading28319_7520e9-4e, .wp-block-kadence-advancedheading.kt-adv-heading28319_7520e9-4e[data-kb-block=\"kb-adv-heading28319_7520e9-4e\"]{font-style:normal;}.wp-block-kadence-advancedheading.kt-adv-heading28319_7520e9-4e mark.kt-highlight, .wp-block-kadence-advancedheading.kt-adv-heading28319_7520e9-4e[data-kb-block=\"kb-adv-heading28319_7520e9-4e\"] mark.kt-highlight{font-style:normal;color:#f76a0c;-webkit-box-decoration-break:clone;box-decoration-break:clone;padding-top:0px;padding-right:0px;padding-bottom:0px;padding-left:0px;}<\/style>\n<p class=\"kt-adv-heading28319_7520e9-4e wp-block-kadence-advancedheading\" data-kb-block=\"kb-adv-heading28319_7520e9-4e\">Dies ist darauf zur\u00fcckzuf\u00fchren, dass durch das physikalische Wirkprinzip von Stromwandlern mit sinkenden prim\u00e4ren Nennstr\u00f6men, der zur \u00dcbertragung einer bestimmten Leistung erforderliche Eisenkernquerschnitt stark ansteigt. Der erforderliche Kernquerschnitt eines Stromwandlers errechnet sich wie folgt.<\/p>\n\n<style>.kb-image28319_e2353f-a8.kb-image-is-ratio-size, .kb-image28319_e2353f-a8 .kb-image-is-ratio-size{max-width:500px;width:100%;}.wp-block-kadence-column > .kt-inside-inner-col > .kb-image28319_e2353f-a8.kb-image-is-ratio-size, .wp-block-kadence-column > .kt-inside-inner-col > .kb-image28319_e2353f-a8 .kb-image-is-ratio-size{align-self:unset;}.kb-image28319_e2353f-a8{max-width:500px;}.image-is-svg.kb-image28319_e2353f-a8{-webkit-flex:0 1 100%;flex:0 1 100%;}.image-is-svg.kb-image28319_e2353f-a8 img{width:100%;}.kb-image28319_e2353f-a8 .kb-image-has-overlay:after{opacity:0.3;}<\/style>\n<figure class=\"wp-block-kadence-image kb-image28319_e2353f-a8 size-medium_large\"><img decoding=\"async\" width=\"768\" height=\"634\" src=\"https:\/\/mbs-ag.com\/wp-content\/uploads\/2024\/01\/Bild_4-Wickelstromwandler-768x634.jpg\" alt=\"\" class=\"kb-img wp-image-28312\" srcset=\"https:\/\/mbs-ag.com\/wp-content\/uploads\/2024\/01\/Bild_4-Wickelstromwandler-768x634.jpg 768w, https:\/\/mbs-ag.com\/wp-content\/uploads\/2024\/01\/Bild_4-Wickelstromwandler-300x248.jpg 300w, https:\/\/mbs-ag.com\/wp-content\/uploads\/2024\/01\/Bild_4-Wickelstromwandler-600x495.jpg 600w, https:\/\/mbs-ag.com\/wp-content\/uploads\/2024\/01\/Bild_4-Wickelstromwandler-64x53.jpg 64w, https:\/\/mbs-ag.com\/wp-content\/uploads\/2024\/01\/Bild_4-Wickelstromwandler.jpg 842w\" sizes=\"(max-width: 768px) 100vw, 768px\" \/><\/figure>\n\n<style>.wp-block-kadence-advancedheading.kt-adv-heading28319_50f2c0-b5, .wp-block-kadence-advancedheading.kt-adv-heading28319_50f2c0-b5[data-kb-block=\"kb-adv-heading28319_50f2c0-b5\"]{font-style:normal;}.wp-block-kadence-advancedheading.kt-adv-heading28319_50f2c0-b5 mark.kt-highlight, .wp-block-kadence-advancedheading.kt-adv-heading28319_50f2c0-b5[data-kb-block=\"kb-adv-heading28319_50f2c0-b5\"] mark.kt-highlight{font-style:normal;color:#f76a0c;-webkit-box-decoration-break:clone;box-decoration-break:clone;padding-top:0px;padding-right:0px;padding-bottom:0px;padding-left:0px;}<\/style>\n<p class=\"kt-adv-heading28319_50f2c0-b5 wp-block-kadence-advancedheading\" data-kb-block=\"kb-adv-heading28319_50f2c0-b5\">Die oben genannte Formel macht deutlich, dass bei gleicher Bemessungsleistung Sr und gleicher magnetischer Flussdichte B der Bedarf an Kernquerschnitt mit abnehmendem prim\u00e4ren Bemessungsstrom zunimmt. Dieser Zusammenhang ist in der folgenden Abbildung noch einmal visuell aufbereitet.<\/p>\n\n<style>.kb-image28319_553ea2-89 .kb-image-has-overlay:after{opacity:0.3;}<\/style>\n<figure class=\"wp-block-kadence-image kb-image28319_553ea2-89 size-large\"><img decoding=\"async\" width=\"1024\" height=\"408\" src=\"https:\/\/mbs-ag.com\/wp-content\/uploads\/2024\/01\/Bild_3-Wickelstromwandler-1024x408.jpg\" alt=\"\" class=\"kb-img wp-image-28311\" srcset=\"https:\/\/mbs-ag.com\/wp-content\/uploads\/2024\/01\/Bild_3-Wickelstromwandler-1024x408.jpg 1024w, https:\/\/mbs-ag.com\/wp-content\/uploads\/2024\/01\/Bild_3-Wickelstromwandler-300x120.jpg 300w, https:\/\/mbs-ag.com\/wp-content\/uploads\/2024\/01\/Bild_3-Wickelstromwandler-768x306.jpg 768w, https:\/\/mbs-ag.com\/wp-content\/uploads\/2024\/01\/Bild_3-Wickelstromwandler-600x239.jpg 600w, https:\/\/mbs-ag.com\/wp-content\/uploads\/2024\/01\/Bild_3-Wickelstromwandler-64x26.jpg 64w, https:\/\/mbs-ag.com\/wp-content\/uploads\/2024\/01\/Bild_3-Wickelstromwandler.jpg 1387w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n<style>.wp-block-kadence-advancedheading.kt-adv-heading28319_700e79-4f, .wp-block-kadence-advancedheading.kt-adv-heading28319_700e79-4f[data-kb-block=\"kb-adv-heading28319_700e79-4f\"]{font-style:normal;}.wp-block-kadence-advancedheading.kt-adv-heading28319_700e79-4f mark.kt-highlight, .wp-block-kadence-advancedheading.kt-adv-heading28319_700e79-4f[data-kb-block=\"kb-adv-heading28319_700e79-4f\"] mark.kt-highlight{font-style:normal;color:#f76a0c;-webkit-box-decoration-break:clone;box-decoration-break:clone;padding-top:0px;padding-right:0px;padding-bottom:0px;padding-left:0px;}<\/style>\n<p class=\"kt-adv-heading28319_700e79-4f wp-block-kadence-advancedheading\" data-kb-block=\"kb-adv-heading28319_700e79-4f\">Um im genannten Prim\u00e4rstrombereich eine genaue Messung bei kleinstm\u00f6glicher Baugr\u00f6\u00dfe der Stromwandler zu erzielen, werden hier oftmals sogenannte Wickel-Stromwandler verwendet. Wickel-Stromwandler verf\u00fcgen \u00fcber keine, wie sonst bei herk\u00f6mmlichen Durchsteck-Stromwandlern \u00fcbliche, Prim\u00e4rleiterdurchf\u00fchrung. Zur Installation eines Wickelstromwandlers ist ein Auftrennen des Prim\u00e4rstromkreises (Laststromkreises) notwendig. Die Enden der Prim\u00e4rleiter werden anschlie\u00dfend direkt mit den Prim\u00e4r-Eingangsklemmen des Wickel-Stromwandlers verbunden. Um das gew\u00fcnschte \u00dcbersetzungsverh\u00e4ltnis zu erhalten, wird der Prim\u00e4rleiter im Inneren des Wandlergeh\u00e4uses mehrmals um den Messkern gef\u00fchrt.<\/p>\n\n<style>.kb-image28319_eec408-6a .kb-image-has-overlay:after{opacity:0.3;}<\/style>\n<figure class=\"wp-block-kadence-image kb-image28319_eec408-6a size-medium_large\"><img decoding=\"async\" width=\"768\" height=\"514\" src=\"https:\/\/mbs-ag.com\/wp-content\/uploads\/2024\/01\/Bild_5-Wickelstromwandler-768x514.jpg\" alt=\"\" class=\"kb-img wp-image-28313\" srcset=\"https:\/\/mbs-ag.com\/wp-content\/uploads\/2024\/01\/Bild_5-Wickelstromwandler-768x514.jpg 768w, https:\/\/mbs-ag.com\/wp-content\/uploads\/2024\/01\/Bild_5-Wickelstromwandler-300x201.jpg 300w, https:\/\/mbs-ag.com\/wp-content\/uploads\/2024\/01\/Bild_5-Wickelstromwandler-1024x685.jpg 1024w, https:\/\/mbs-ag.com\/wp-content\/uploads\/2024\/01\/Bild_5-Wickelstromwandler-600x401.jpg 600w, https:\/\/mbs-ag.com\/wp-content\/uploads\/2024\/01\/Bild_5-Wickelstromwandler-64x43.jpg 64w, https:\/\/mbs-ag.com\/wp-content\/uploads\/2024\/01\/Bild_5-Wickelstromwandler.jpg 1375w\" sizes=\"(max-width: 768px) 100vw, 768px\" \/><\/figure>\n\n<p>Durch die h\u00f6here Anzahl an Prim\u00e4rwindungen kann gem\u00e4\u00df der Formel in Abbildung 2 der erforderliche Kernquerschnitt abgesenkt werden.<\/p>\n\n<p>Wickel-Stromwandler f\u00fcr Niederspannungsanwendungen sind bei der MBS AG bis 150 A in verschiedensten Ausf\u00fchrungen erh\u00e4ltlich.<\/p>\n\n<style>.kb-image28319_49177a-a5 .kb-image-has-overlay:after{opacity:0.3;}<\/style>\n<figure class=\"wp-block-kadence-image kb-image28319_49177a-a5 size-large\"><img decoding=\"async\" width=\"1024\" height=\"626\" src=\"https:\/\/mbs-ag.com\/wp-content\/uploads\/2024\/01\/Bild_8-Wickelstromwandler-1024x626.jpg\" alt=\"\" class=\"kb-img wp-image-28316\" srcset=\"https:\/\/mbs-ag.com\/wp-content\/uploads\/2024\/01\/Bild_8-Wickelstromwandler-1024x626.jpg 1024w, https:\/\/mbs-ag.com\/wp-content\/uploads\/2024\/01\/Bild_8-Wickelstromwandler-300x183.jpg 300w, https:\/\/mbs-ag.com\/wp-content\/uploads\/2024\/01\/Bild_8-Wickelstromwandler-768x469.jpg 768w, https:\/\/mbs-ag.com\/wp-content\/uploads\/2024\/01\/Bild_8-Wickelstromwandler-600x367.jpg 600w, https:\/\/mbs-ag.com\/wp-content\/uploads\/2024\/01\/Bild_8-Wickelstromwandler-64x39.jpg 64w, https:\/\/mbs-ag.com\/wp-content\/uploads\/2024\/01\/Bild_8-Wickelstromwandler.jpg 1370w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n<p>Zur Gruppe der Wickel-Stromwandler werden auch sogenannte Zwischenstromwandler gez\u00e4hlt.<br>Zwischenstromwandler werden f\u00fcr prim\u00e4re Bemessungsstromst\u00e4rken bis ca. 10 A gefertigt und erm\u00f6glichen die proportionale Umwandlung des Eingangsstromes auf kleinere, bzw. gr\u00f6\u00dfere sekund\u00e4re Bemessungsstromst\u00e4rken. Sind beispielsweise gr\u00f6\u00dfere Strecken vom Stromwandler zum Messger\u00e4t zu \u00fcberbr\u00fccken, empfiehlt es sich den Hauptwandler mit einem Sekund\u00e4rstrom von 1 statt 5 A zu w\u00e4hlen. So k\u00f6nnen die Zuleitungsverluste minimiert werden.<\/p>\n\n<p>Um den Eigenverbrauch von Kupfer-Leitungen zu berechnen ist folgende Formel anzuwenden.<\/p>\n\n<style>.kb-image28319_fb2737-23 .kb-image-has-overlay:after{opacity:0.3;}<\/style>\n<figure class=\"wp-block-kadence-image kb-image28319_fb2737-23 size-large\"><img decoding=\"async\" width=\"1024\" height=\"141\" src=\"https:\/\/mbs-ag.com\/wp-content\/uploads\/2024\/01\/Bild_6-Wickelstromwandler-1024x141.jpg\" alt=\"\" class=\"kb-img wp-image-28314\" srcset=\"https:\/\/mbs-ag.com\/wp-content\/uploads\/2024\/01\/Bild_6-Wickelstromwandler-1024x141.jpg 1024w, https:\/\/mbs-ag.com\/wp-content\/uploads\/2024\/01\/Bild_6-Wickelstromwandler-300x41.jpg 300w, https:\/\/mbs-ag.com\/wp-content\/uploads\/2024\/01\/Bild_6-Wickelstromwandler-768x106.jpg 768w, https:\/\/mbs-ag.com\/wp-content\/uploads\/2024\/01\/Bild_6-Wickelstromwandler-600x83.jpg 600w, https:\/\/mbs-ag.com\/wp-content\/uploads\/2024\/01\/Bild_6-Wickelstromwandler-64x9.jpg 64w, https:\/\/mbs-ag.com\/wp-content\/uploads\/2024\/01\/Bild_6-Wickelstromwandler.jpg 1473w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n<p>Abgeleitet aus dieser Formel kann festgestellt werden, dass durch eine Halbierung des urspr\u00fcnglichen Sekund\u00e4rstromes, eine Reduzierung der Leistungsverluste auf 25 % des urspr\u00fcnglichen Wertes erzielt werden kann.<\/p>\n\n<p>Kurz vor dem Messger\u00e4t k\u00f6nnte ein Zwischenstromwandler die 1 A auf 5 A umsetzen. Dabei ist zu beachten, dass die Genauigkeitsklassen des Haupt- und Zwischenwandlers zu addieren sind. Besitzt der Hauptwandler Kl. 0,2 und der Zwischenwandler Kl. 1 ergibt sich f\u00fcr das Gesamtsystem bei richtiger Beb\u00fcrdung der Wandler ein m\u00f6glicher Gesamtfehler von 1,2 %.<\/p>\n\n<p>Hinweis: Da ein Zwischenstromwandler im Sekund\u00e4rkreis eines Hauptwandlers eine zus\u00e4tzliche induktive Last darstellt, muss dessen Eigenleistungsbedarf bei der korrekten Auswahl des Hauptwandlers ber\u00fccksichtigt werden.<\/p>\n\n<p>Zur korrekten Leistungsbemessung des einzusetzenden Hauptwandlers, verwenden Sie bitte nachfolgend aufgef\u00fchrte Formel:<\/p>\n\n<style>.kb-image28319_2f6a57-e0.kb-image-is-ratio-size, .kb-image28319_2f6a57-e0 .kb-image-is-ratio-size{max-width:460px;width:100%;}.wp-block-kadence-column > .kt-inside-inner-col > .kb-image28319_2f6a57-e0.kb-image-is-ratio-size, .wp-block-kadence-column > .kt-inside-inner-col > .kb-image28319_2f6a57-e0 .kb-image-is-ratio-size{align-self:unset;}.kb-image28319_2f6a57-e0{max-width:460px;}.image-is-svg.kb-image28319_2f6a57-e0{-webkit-flex:0 1 100%;flex:0 1 100%;}.image-is-svg.kb-image28319_2f6a57-e0 img{width:100%;}.kb-image28319_2f6a57-e0 .kb-image-has-overlay:after{opacity:0.3;}<\/style>\n<figure class=\"wp-block-kadence-image kb-image28319_2f6a57-e0 size-full\"><img decoding=\"async\" src=\"https:\/\/mbs-ag.com\/en\/wp-content\/uploads\/sites\/2\/2024\/01\/Bild_7-Wickelstromwandler.jpg\" alt=\"\" class=\"kb-img wp-image-18278\"\/><\/figure>\n\n<style>.wp-block-kadence-advancedheading.kt-adv-heading28319_b6ef61-6d, .wp-block-kadence-advancedheading.kt-adv-heading28319_b6ef61-6d[data-kb-block=\"kb-adv-heading28319_b6ef61-6d\"]{font-style:normal;}.wp-block-kadence-advancedheading.kt-adv-heading28319_b6ef61-6d mark.kt-highlight, .wp-block-kadence-advancedheading.kt-adv-heading28319_b6ef61-6d[data-kb-block=\"kb-adv-heading28319_b6ef61-6d\"] mark.kt-highlight{font-style:normal;color:#f76a0c;-webkit-box-decoration-break:clone;box-decoration-break:clone;padding-top:0px;padding-right:0px;padding-bottom:0px;padding-left:0px;}<\/style>\n<p class=\"kt-adv-heading28319_b6ef61-6d wp-block-kadence-advancedheading\" data-kb-block=\"kb-adv-heading28319_b6ef61-6d\">Legende:<br>S_rH Sekund\u00e4re Bemessungs-Scheinleistung des Hauptwandlers<br>S_rZ Sekund\u00e4re Bemessungs-Scheinleistung des Zwischenwandlers (Summe aus Leistungsbedarf der angeschlossenen Messger\u00e4te und Leitungsverlusten der Sekund\u00e4rleitungen)<br>P_E Eigenleistungsbedarf des Zwischenwandlers bei Nennstrom (typisch: ca. 3 VA)<br>P_HZ Leitungsverluste zwischen Haupt- und Zwischenwandler<br>I_pr Prim\u00e4re Bemessungs-Stromst\u00e4rke des Zwischenwandlers<br>I_sr Sekund\u00e4re Bemessungs-Stromst\u00e4rke des Zwischenwandlers<\/p><\/div><\/div>\n<\/div><\/div>","protected":false},"excerpt":{"rendered":"<p>Grundlagen Wickel-Stromwandler in der Niederspannung IIn der Praxis ist es oftmals erforderlich, Str\u00f6me im Nennstrombereich unterhalb von 100 A zu messen. Da die meisten zur Strommessung eingesetzten Messger\u00e4te jedoch nur \u00fcber 1\/5 A Messeing\u00e4nge verf\u00fcgen, kann maximal ein&#8230;<\/p>\n","protected":false},"author":4,"featured_media":28318,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_kad_blocks_custom_css":"","_kad_blocks_head_custom_js":"","_kad_blocks_body_custom_js":"","_kad_blocks_footer_custom_js":"","_kad_post_transparent":"","_kad_post_title":"","_kad_post_layout":"","_kad_post_sidebar_id":"sidebar-secondary","_kad_post_content_style":"","_kad_post_vertical_padding":"","_kad_post_feature":"","_kad_post_feature_position":"","_kad_post_header":false,"_kad_post_footer":false,"footnotes":""},"categories":[23350],"tags":[],"class_list":["post-28319","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-fachhinweise"],"acf":[],"taxonomy_info":{"category":[{"value":23350,"label":"Fachhinweise"}]},"featured_image_src_large":["https:\/\/mbs-ag.com\/wp-content\/uploads\/2024\/01\/Wickelstromwandler-Gruppe-1080x675-1-1024x640.png",1024,640,true],"author_info":{"display_name":"Dieter Hess","author_link":"https:\/\/mbs-ag.com\/author\/ad48mbs023\/"},"comment_info":0,"category_info":[{"term_id":23350,"name":"Fachhinweise","slug":"fachhinweise","term_group":0,"term_taxonomy_id":23350,"taxonomy":"category","description":"","parent":0,"count":8,"filter":"raw","term_order":"0","order":"0","cat_ID":23350,"category_count":8,"category_description":"","cat_name":"Fachhinweise","category_nicename":"fachhinweise","category_parent":0}],"tag_info":false,"_links":{"self":[{"href":"https:\/\/mbs-ag.com\/wp-json\/wp\/v2\/posts\/28319","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/mbs-ag.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/mbs-ag.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/mbs-ag.com\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/mbs-ag.com\/wp-json\/wp\/v2\/comments?post=28319"}],"version-history":[{"count":0,"href":"https:\/\/mbs-ag.com\/wp-json\/wp\/v2\/posts\/28319\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/mbs-ag.com\/wp-json\/wp\/v2\/media\/28318"}],"wp:attachment":[{"href":"https:\/\/mbs-ag.com\/wp-json\/wp\/v2\/media?parent=28319"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/mbs-ag.com\/wp-json\/wp\/v2\/categories?post=28319"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/mbs-ag.com\/wp-json\/wp\/v2\/tags?post=28319"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}