{"id":868,"date":"2023-12-12T15:39:17","date_gmt":"2023-12-12T07:39:17","guid":{"rendered":"https:\/\/www.britecelectric.com\/?post_type=blog&p=868"},"modified":"2024-09-05T16:41:11","modified_gmt":"2024-09-05T08:41:11","slug":"how-to-choose-an-spd","status":"publish","type":"blog","link":"https:\/\/www.britecelectric.com\/it\/blog\/how-to-choose-an-spd\/","title":{"rendered":"Come scegliere un SPD"},"content":{"rendered":"Perch\u00e9 acquistare un dispositivo di protezione contro le sovratensioni (SPD)?<\/strong>\r\n\r\nUn dispositivo di protezione contro le sovratensioni (SPD) \u00e8 progettato per ridurre la sovratensione, proteggendo le apparecchiature e riducendo i costi di riparazione e sostituzione. Ogni SPD riduce la sovratensione alle apparecchiature durante un picco a un livello di tensione testato noto come tensione passante.\r\n\r\nTipi di protezione<\/strong>\r\n\r\nQuando si parla di diversi tipi di protezione contro le sovratensioni, esistono tre tipi principali:\r\n\r\n\r\n\r\n\r\n\r\n\r\n
Tipo<\/td>\r\nCosa fa<\/td>\r\nDove usarlo<\/td>\r\n<\/tr>\r\n
Tipo 1<\/td>\r\nProtezione contro i fulmini diretti<\/td>\r\nAll'ingresso della rete di qualsiasi impianto elettrico in cui \u00e8 installata una protezione antifulmine esterna o \u00e8 alimentato da linee aeree.<\/td>\r\n<\/tr>\r\n
Tipo 2<\/td>\r\nProtezione contro le sovratensioni<\/td>\r\nAll'ingresso di rete di qualsiasi edificio che non necessita di protezione contro i fulmini e per l'uso su qualsiasi sottoquadro a pi\u00f9 di 10-15 metri dal pannello principale.<\/td>\r\n<\/tr>\r\n
Tipo 3<\/td>\r\nProtezione dell'apparecchiatura finale<\/td>\r\nSu qualsiasi apparecchiatura in cui \u00e8 necessaria una bassa tensione passante.<\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>\r\nQual \u00e8 il modo corretto per determinare quale dimensione di SPD utilizzare in un sistema?<\/strong>\r\n\r\nSPDs are not one-size-fits-all devices, nor do the sizes of their kA rating (the surge rating) go hand-in-hand with the size of the panel. In other words, do not select an SPD with a maximum kA rating just because the panel is large.\r\n\r\nTo determine which SPD should be used for the system, you must know the reference to the ground as well as the type of voltage that is present. Therefore, a panel designer should first determine the type of electrical system in use, and then calculate the voltage reference to ground. The formula to determine this will depend on the type of system.\r\n\r\nFor example, for a single-phase system (also called a split-phase system), the line-to-line voltage is divided by two. The result is the optimal amount of volts that the SPD should have for that system.\r\n\r\nCome scegliere un dispositivo<\/strong>\r\n
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  • Il dispositivo \u00e8 adatto alla vostra disposizione di messa a terra?<\/li>\r\n<\/ul>\r\nQuesto \u00e8 uno dei problemi pi\u00f9 comuni con l'installazione di SPD. La considerazione pi\u00f9 importante riguarda i sistemi TT, dove il dispositivo deve essere adatto.\r\n
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    • Il dispositivo protegge sia il polo attivo che quello neutro?<\/li>\r\n<\/ul>\r\nEsistono alcuni dispositivi sul mercato che potrebbero sembrare economici rispetto ad altri dispositivi, ma se il dispositivo non protegge sia la tensione che il neutro, le sovratensioni potrebbero entrare nella tua propriet\u00e0 e bypassare l'SPD.\r\n
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      • Che garanzia offre il produttore?<\/li>\r\n<\/ul>\r\nQuesto \u00e8 generalmente un indicatore chiave della qualit\u00e0 dei componenti utilizzati nell'SPD.\r\n\r\nAcquistare il giusto dispositivo di protezione contro le sovratensioni (SPD).<\/strong>\r\n\r\nMentre qualsiasi SPD ridurr\u00e0 il livello di sovratensione che passa alle apparecchiature elettriche durante un evento di sovratensione, alcuni hanno una tensione passante troppo elevata per prevenire danni, il che equivale quasi a non avere alcuna protezione. BRITEC offre una gamma completa di dispositivi di protezione contro le sovratensioni per proteggere le apparecchiature elettriche. I dispositivi di protezione contro le sovratensioni BRITEC sono la scelta giusta per tutte le aziende e le case.","protected":false},"featured_media":870,"parent":0,"menu_order":143,"template":"","meta":{"_acf_changed":false},"blog_category":[8],"class_list":["post-868","blog","type-blog","status-publish","has-post-thumbnail","hentry","blog_category-company-news"],"acf":{"des":"A Surge Protective Device (SPD) is designed to reduce surge voltage, which protects equipment and reduces repair and replacement costs. Every SPD reduces the surge voltage to equipment during a surge to a voltage tested level known as Let-Through-Voltage.","txt":"Why Purchase a Surge Protective Device (SPD)?<\/strong>\r\n\r\nA Surge Protective Device (SPD) is designed to reduce surge voltage, which protects equipment and reduces repair and replacement costs. Every SPD reduces the surge voltage to equipment during a surge to a voltage tested level known as Let-Through-Voltage.\r\n\r\nTypes of Protection<\/strong>\r\n\r\nWhen discussing di\ufb00erent types of surge protection, there are three main types:\r\n\r\n\r\n\r\n\r\n\r\n\r\n
        Type<\/td>\r\nWhat it does<\/td>\r\nWhere to use it<\/td>\r\n<\/tr>\r\n
        Type 1<\/td>\r\nProtection against direct Lightning strikes<\/td>\r\nAt the mains incomer of any electrical installation where external Lightning Protection is installed, or is fed by overhead lines.<\/td>\r\n<\/tr>\r\n
        Type 2<\/td>\r\nSurge Protection<\/td>\r\nAt the mains incomer of any building that doesn\u2019t need any lightning protection, and for use on any sub boards more than 10-15 meters from the main panel.<\/td>\r\n<\/tr>\r\n
        Type 3<\/td>\r\nEnd equipment protection<\/td>\r\nOn any piece of equipment where a low let through voltage is needed.<\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>\r\nWhat is the correct way to determine which size of SPD to use in a system?<\/strong>\r\n\r\nSPDs are not one-size-fits-all devices, nor do the sizes of their kA rating (the surge rating) go hand-in-hand with the size of the panel. In other words, do not select an SPD with a maximum kA rating just because the panel is large.\r\n\r\nTo determine which SPD should be used for the system, you must know the reference to the ground as well as the type of voltage that is present. Therefore, a panel designer should first determine the type of electrical system in use, and then calculate the voltage reference to ground. The formula to determine this will depend on the type of system.\r\n\r\nFor example, for a single-phase system (also called a split-phase system), the line-to-line voltage is divided by two. The result is the optimal amount of volts that the SPD should have for that system.\r\n\r\nHow to choose a device<\/strong>\r\n
          \r\n \t
        • Is the device suitable for your earthing arrangement?<\/li>\r\n<\/ul>\r\nThis is one of the most common issues with SPD installation. The most important consideration is for TT systems, where the device needs to be suitable.\r\n
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          • Is the device protecting both the live & neutral poles?<\/li>\r\n<\/ul>\r\nThere are a few devices on the market with may seem inexpensive compared to other devices, but if the device is not protecting both live & neutral, surges may enter your property and bypass the SPD.\r\n
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            • What warranty does the manufacturer provide?<\/li>\r\n<\/ul>\r\nThis is generally a key indicator of the quality of the components used in the SPD.\r\n\r\nPurchasing the Right Surge Protective Device (SPD).<\/strong>\r\n\r\nWhile any SPD will reduce the surge voltage level passing to electrical equipment during a surge event, some have a Let-Through-Voltage that is too high to prevent damage, which is almost the same as having no protection at all. BRITEC offers a complete range of surge protective devices to protect electrical equipment. BRITEC Surge Protective Devices are the right choice for all businesses and homes."},"_links":{"self":[{"href":"https:\/\/www.britecelectric.com\/it\/wp-json\/wp\/v2\/blog\/868","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.britecelectric.com\/it\/wp-json\/wp\/v2\/blog"}],"about":[{"href":"https:\/\/www.britecelectric.com\/it\/wp-json\/wp\/v2\/types\/blog"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.britecelectric.com\/it\/wp-json\/wp\/v2\/media\/870"}],"wp:attachment":[{"href":"https:\/\/www.britecelectric.com\/it\/wp-json\/wp\/v2\/media?parent=868"}],"wp:term":[{"taxonomy":"blog_category","embeddable":true,"href":"https:\/\/www.britecelectric.com\/it\/wp-json\/wp\/v2\/blog_category?post=868"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}