{"id":1410,"date":"2025-04-09T11:51:10","date_gmt":"2025-04-09T11:51:10","guid":{"rendered":"http:\/\/31.217.192.161\/~ajatonma\/?page_id=1410"},"modified":"2025-09-08T10:44:22","modified_gmt":"2025-09-08T07:44:22","slug":"aktiivisuodattimet","status":"publish","type":"page","link":"http:\/\/31.217.192.161\/~ajatonma\/aktiivisuodattimet\/","title":{"rendered":"Aktiivisuodattimet"},"content":{"rendered":"\t\t
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Aktiivi­suodattimet<\/h1>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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S\u00e4hk\u00f6verkoissa esiintyy yliaaltovirtoja johtuen ep\u00e4lineaarisista kuormista kuten tietokoneista, taajuusmuuttajista ja UPS-laitteistoista. Yliaaltovirrat aiheuttavat esimerkiksi h\u00e4vi\u00f6iden kasvua ja s\u00e4hk\u00f6laitteiden vikaantumisia. Aktiivisuodatin tarvitaan, kun verkon yliaaltopitoisuus on niin suuri, ett\u00e4 yliaallot saattavat aiheuttaa h\u00e4iri\u00f6it\u00e4.<\/p><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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S\u00e4hk\u00f6n­laadun
varmista­minen<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Aktiivisuodatin on suunniteltu korkean yliaaltopitoisuuden verkkoon parantamaan s\u00e4hk\u00f6nlaatua dynaamisesti. Aktiivisuodatin on erityisen osuva ratkaisu, kun verkossa on monen eri j\u00e4rjestysluvun yliaaltoja (5., 7., 9., \u2026, 19., \u2026). Lis\u00e4ksi yliaaltotasot voivat vaihdella. Aktiivisuodatin tuottaa kullekin yliaaltovirralle vastakkaisen virran kumoten n\u00e4in haitalliset yliaallot. Lis\u00e4ksi aktiivisuodatin parantaa sek\u00e4 induktiivista ett\u00e4 kapasitiivista tehokerrointa. Ep\u00e4ily korkeasta yliaaltopitoisuudesta varmistetaan mittauksin.<\/p><\/div><\/div><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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Aktiivisuodattimen
ominaisuuksia<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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– Kompensointivirta 40 \u2013 400 A
– Modulaarinen rakenne mahdollistaa my\u00f6s yli 400 A kompensointivirrat
– 3- tai 4-johdinversio
– J\u00e4nnite 200\u2013690 V
– 50\/60 Hz
– L\u00e4mp\u00f6tila 40\u00b0C ilman tehon alentumista, alentuneella teholla 55\u00b0C
– Ilma -tai vesij\u00e4\u00e4hdytys
– IP30, tarvittaessa IP54:\u00e4\u00e4n asti<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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Harmoniset yliaallot<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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\n\t\t\t\t\t\t\t\t\t\nVirheet\u00f6n s\u00e4hk\u00f6virta- ja j\u00e4nnite ovat sinik\u00e4yr\u00e4n muotoisia\u00a0(MUSTA<\/span>).<\/strong>\u00a0Osa s\u00e4hk\u00f6laitteista aiheuttaa sinik\u00e4yr\u00e4n v\u00e4\u00e4ristymi\u00e4 s\u00e4hk\u00f6verkossa. N\u00e4it\u00e4 sinik\u00e4yr\u00e4n v\u00e4\u00e4ristymi\u00e4 kutsutaan harmonisiksi yliaalloiksi. Harmoniset yliaallot ovat perusaallon kerrannaisia\u00a0(E<\/span>R<\/span>I<\/span>V<\/span>\u00c4<\/span>R<\/span>I<\/span>S<\/span>E<\/span>T<\/span>)<\/strong>. Harmoniset yliaallot summautuvat perusaaltoon aiheuttaen s\u00e4r\u00f6ytyneen sinik\u00e4yr\u00e4n\u00a0(PUNAINEN<\/span>)<\/strong>.\n\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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\n\t\t\t<\/path><\/svg>\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Yliaaltol\u00e4hteit\u00e4<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Tunnettuja yliaaltol\u00e4hteit\u00e4 ovat mm. taajuusmuuttajat, hakkuritehol\u00e4hteet, tyristorikytkimet, kodin ja toimistotilojen elektroniikka, UPS-laitteistot, led-valaisimet ja purkauslamput.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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Haittoja<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Yliaaltojen aiheuttamia haittoja ovat h\u00e4iri\u00f6iden kasvu s\u00e4hk\u00f6verkossa ja s\u00e4hk\u00f6nk\u00e4ytt\u00e4jien laitteissa, sek\u00e4 laitteiden kuormitettavuuden alentuminen. Yliaallot aiheuttavat my\u00f6s mittareiden virhen\u00e4ytt\u00e4mi\u00e4 sek\u00e4 automaatiolaitteiden ja suojareleiden virhetoimintoja.<\/p><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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TKF:n ratkaisuja on k\u00e4yt\u00f6ss\u00e4 tuhansissa kohteissa toimisto­rakennuksista teollisuuteen<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Tarpeet vaihtelevat tavanomaisesta loistehon kompensoinnista vaativiin yhteiskunnalle kriittisiin sovelluksiin. Osaamiseemme luottavat sairaalat (Esimerkiksi Suomessa Tampereen yliopistollinen sairaala ja Satakunnan keskussairaala), puolustusvoimat, infrakohteet (Helsinki-Vantaan lentokentt\u00e4, Helsingin metro), teollisuus, kiinteist\u00f6t (VVO, Senaatti-kiinteist\u00f6t) ja s\u00e4hk\u00f6laitokset.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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\n\t\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t<\/path><\/svg>\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\tAsiakkaat<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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\n\t\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t<\/path><\/svg>\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\tOta yhteytt\u00e4<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"

Aktiivi­suodattimet S\u00e4hk\u00f6verkoissa esiintyy yliaaltovirtoja johtuen ep\u00e4lineaarisista kuormista kuten tietokoneista, taajuusmuuttajista ja UPS-laitteistoista. Yliaaltovirrat aiheuttavat esimerkiksi h\u00e4vi\u00f6iden kasvua ja s\u00e4hk\u00f6laitteiden vikaantumisia. […]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"site-sidebar-layout":"no-sidebar","site-content-layout":"","ast-site-content-layout":"full-width-container","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"disabled","ast-breadcrumbs-content":"","ast-featured-img":"disabled","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"class_list":["post-1410","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"http:\/\/31.217.192.161\/~ajatonma\/wp-json\/wp\/v2\/pages\/1410","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/31.217.192.161\/~ajatonma\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"http:\/\/31.217.192.161\/~ajatonma\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"http:\/\/31.217.192.161\/~ajatonma\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/31.217.192.161\/~ajatonma\/wp-json\/wp\/v2\/comments?post=1410"}],"version-history":[{"count":85,"href":"http:\/\/31.217.192.161\/~ajatonma\/wp-json\/wp\/v2\/pages\/1410\/revisions"}],"predecessor-version":[{"id":3635,"href":"http:\/\/31.217.192.161\/~ajatonma\/wp-json\/wp\/v2\/pages\/1410\/revisions\/3635"}],"wp:attachment":[{"href":"http:\/\/31.217.192.161\/~ajatonma\/wp-json\/wp\/v2\/media?parent=1410"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}