{"id":4284,"date":"2023-04-23T20:40:31","date_gmt":"2023-04-23T12:40:31","guid":{"rendered":"http:\/\/www.dcl-controls.com\/?p=4284"},"modified":"2025-03-31T09:27:20","modified_gmt":"2025-03-31T09:27:20","slug":"why-explosion-proof-actuator","status":"publish","type":"post","link":"https:\/\/dclactuator.com\/sv_se\/stod\/ett-stalldon\/varfor-explosionssakert-stalldon","title":{"rendered":"Varf\u00f6r beh\u00f6ver vissa st\u00e4lldon explosionsskydd?"},"content":{"rendered":"
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\u00a0<\/p>

1. Vad \u00e4r en explosion?<\/strong><\/h2>

En explosion intr\u00e4ffar n\u00e4r brandfarliga \u00e4mnen blandas med syre<\/strong> och ant\u00e4ndas under vissa f\u00f6rh\u00e5llanden. Om reaktionshastigheten \u00f6verstiger ljudets hastighet<\/strong>, resulterar det i en destruktiv explosionsv\u00e5g<\/strong>.<\/p>

2. Vad \u00e4r explosionsskydd?<\/strong><\/h2>

Till f\u00f6rhindra explosioner<\/strong>, m\u00e5ste minst en av de tre nyckelfaktorerna kontrolleras:<\/p>

  1. Brandfarliga \u00e4mnen<\/strong><\/p><\/li>

  2. Syre<\/strong><\/p><\/li>

  3. Ant\u00e4ndningsk\u00e4lla<\/strong><\/p><\/li><\/ol>

    Sedan brandfarliga \u00e4mnen och syre \u00e4r ofta oundvikliga<\/strong> i industriella milj\u00f6er, den ant\u00e4ndningsk\u00e4llan m\u00e5ste kontrolleras<\/strong>.<\/p>

    Elektrisk utrustning \u00e4r en potentiell ant\u00e4ndningsk\u00e4lla<\/strong> p\u00e5 grund av:
    \u2714 Ytv\u00e4rme under drift<\/strong>
    \u2714 Elektrostatisk urladdning<\/strong>
    \u2714 Gnistor fr\u00e5n elektriska str\u00f6mmar<\/strong><\/p>

    Explosionss\u00e4ker elektrisk utrustning \u00e4r utformad f\u00f6r att f\u00f6rhindra h\u00f6ga yttemperaturer och elektriska gnistor<\/strong>, vilket s\u00e4kerst\u00e4ller att det blir inte en ant\u00e4ndningsk\u00e4lla<\/strong>.<\/p>

    <\/p>

    3. Klassificering av farliga milj\u00f6er<\/strong><\/h2>

    Explosionss\u00e4ker elektrisk utrustning klassificeras i tv\u00e5 kategorier:<\/p>

    • Kategori I<\/strong>Utrustning f\u00f6r kolgruvor<\/strong><\/p><\/li>

    • Kategori II<\/strong>Utrustning f\u00f6r andra explosiva gasmilj\u00f6er<\/strong><\/p><\/li><\/ul>

      Kategori II-utrustning<\/strong><\/h3>

      1. Explosionsgrupper (baserat p\u00e5 s\u00e4kerhetsgap och t\u00e4ndstr\u00f6m)<\/strong><\/p>

        • IIA<\/strong><\/p><\/li>

        • IIB<\/strong> (kan anv\u00e4ndas under IIA-f\u00f6rh\u00e5llanden)<\/p><\/li>

        • IIC<\/strong> (kan anv\u00e4ndas under IIA- och IIB-f\u00f6rh\u00e5llanden)<\/p><\/li><\/ul><\/li>

        • Temperaturgrupper (baserat p\u00e5 maximal yttemperatur)<\/strong><\/p>

          • T1 (450\u00b0C)<\/strong><\/p><\/li>

          • T2 (300\u00b0C)<\/strong><\/p><\/li>

          • T3 (200\u00b0C)<\/strong><\/p><\/li>

          • T4 (135\u00b0C)<\/strong><\/p><\/li>

          • T5 (100\u00b0C)<\/strong><\/p><\/li>

          • T6 (85\u00b0C)<\/strong><\/p><\/li><\/ul><\/li><\/ol>

            Mer \u00e4n 90% av explosiva gaser<\/strong> falla under IIA-, IIB-grupper<\/strong> och T1\u2013T4 temperaturklassificeringar<\/strong>.<\/p>

            <\/p>

            4. Hur uppn\u00e5s explosionsskydd?<\/strong><\/h2>

            Flera metoder s\u00e4kerst\u00e4ller att elektrisk utrustning \u00e4r s\u00e4ker f\u00f6r explosiva milj\u00f6er<\/strong>, enligt definitionen av GB3836, IEC60079, EN50014<\/strong> standarder.<\/p>

            <\/p>

            Explosionss\u00e4ker (Exd) design<\/strong><\/h3>

            DCL explosionss\u00e4kra st\u00e4lldon tillverkas i enlighet med:
            \u2714 GB3836.1-2010, GB3836.2-2010<\/strong>
            \u2714 IEC 60079-0, IEC 60079-1, IEC 60079-31<\/strong>
            \u2714 ISO\/IEC 80079-36, ISO\/IEC 80079-37<\/strong><\/p>

            Principer f\u00f6r flams\u00e4kra (Exd) design<\/strong><\/h4>

            <\/p>

            \u2714 Explosion kan intr\u00e4ffa inuti enheten<\/strong>, men h\u00f6ljet f\u00f6rhindrar att den ant\u00e4nder den yttre milj\u00f6n.
            \u2714 Flams\u00e4kra fogar<\/strong> \u00e4r utformade med r\u00e4tt mellanrum och l\u00e4ngd<\/strong> f\u00f6r att begr\u00e4nsa inre explosioner.
            \u2714 Starka kapslingar<\/strong> motst\u00e5 h\u00f6gt inre tryck<\/strong> utan att g\u00e5 s\u00f6nder.<\/p>

            DCL explosionss\u00e4kra komponenter<\/strong><\/h3>

            \u2714 Motorutrymme<\/strong>
            \u2714 Fack f\u00f6r elektriska komponenter<\/strong>
            \u2714 Kabelutrymme<\/strong><\/p>

            5. DCL-certifiering f\u00f6r explosionss\u00e4kra st\u00e4lldon<\/strong><\/h2>

            Explosionsskyddsniv\u00e5: Exd IIC T4 Gb<\/strong><\/h3>

            \u2714 Ex<\/strong> \u2013 Explosionss\u00e4ker m\u00e4rkning
            \u2714 d<\/strong> \u2013 Flams\u00e4ker typ (\u201dExd\u201d)
            \u2714 II<\/strong> \u2013 Icke-gruvrelaterade till\u00e4mpningar
            \u2714 C<\/strong> \u2013 Explosionsgrupp (h\u00f6gre s\u00e4kerhetskrav)
            \u2714 T4<\/strong> \u2013 Maximal yttemperatur 135\u00b0C<\/strong>
            \u2714 GB<\/strong> \u2013 Utrustningens skyddsniv\u00e5<\/p>

            Slutsats<\/strong><\/h3>

            Explosionss\u00e4kra st\u00e4lldon \u00e4r viktiga i farliga milj\u00f6er<\/strong> att f\u00f6rhindra ant\u00e4ndning av explosiva gaser<\/strong>DCL:er Exd IIC T4 Gb-klassade st\u00e4lldon<\/strong> s\u00e4kerst\u00e4lla s\u00e4kerheten genom att:
            \u2714 Inneh\u00e5ller interna explosioner<\/strong>
            \u2714 F\u00f6rhindra gnistor och \u00f6verdriven v\u00e4rme<\/strong>
            \u2714 Motst\u00e5r h\u00f6gt tryck utan att spricka<\/strong><\/p>

            Dessa design\u00e5tg\u00e4rder g\u00f6r DCL-st\u00e4lldon p\u00e5litliga och s\u00e4kra<\/strong> f\u00f6r industriella till\u00e4mpningar i explosiva atmosf\u00e4rer<\/strong>.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>","protected":false},"excerpt":{"rendered":"

            \u00a0 1. Vad \u00e4r en explosion? En explosion intr\u00e4ffar n\u00e4r brandfarliga \u00e4mnen blandas med syre och ant\u00e4nds under vissa f\u00f6rh\u00e5llanden. Om reaktionshastigheten \u00f6verstiger ljudets hastighet resulterar det i en destruktiv explosionsv\u00e5g. 2. Vad \u00e4r explosionsskydd? F\u00f6r att f\u00f6rhindra explosioner m\u00e5ste minst en av de tre nyckelfaktorerna kontrolleras: [\u2026]<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"elementor_theme","format":"standard","meta":{"_acf_changed":true,"footnotes":""},"categories":[91],"tags":[53,66,39],"class_list":["post-4284","post","type-post","status-publish","format-standard","hentry","category-an-actuator","tag-actuator","tag-explosion-proof-actuator","tag-faq"],"acf":[],"_links":{"self":[{"href":"https:\/\/dclactuator.com\/sv_se\/wp-json\/wp\/v2\/posts\/4284","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/dclactuator.com\/sv_se\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/dclactuator.com\/sv_se\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/dclactuator.com\/sv_se\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/dclactuator.com\/sv_se\/wp-json\/wp\/v2\/comments?post=4284"}],"version-history":[{"count":0,"href":"https:\/\/dclactuator.com\/sv_se\/wp-json\/wp\/v2\/posts\/4284\/revisions"}],"wp:attachment":[{"href":"https:\/\/dclactuator.com\/sv_se\/wp-json\/wp\/v2\/media?parent=4284"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/dclactuator.com\/sv_se\/wp-json\/wp\/v2\/categories?post=4284"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/dclactuator.com\/sv_se\/wp-json\/wp\/v2\/tags?post=4284"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}