{"id":6698,"date":"2023-01-20T11:26:42","date_gmt":"2023-01-20T09:26:42","guid":{"rendered":"https:\/\/www.coralynne.co.za\/blog\/?p=6698"},"modified":"2023-02-02T17:21:22","modified_gmt":"2023-02-02T15:21:22","slug":"ip-rated-enclosures-make-dry-type-transformers-popular-outdoors","status":"publish","type":"post","link":"https:\/\/www.coralynne.co.za\/blog\/ip-rated-enclosures-make-dry-type-transformers-popular-outdoors\/","title":{"rendered":"IP-RATED ENCLOSURES MAKE DRY-TYPE TRANSFORMERS POPULAR OUTDOORS"},"content":{"rendered":"\n

Purpose designed enclosures \u2013 rated for their ingress protection (IP) \u2013 allow dry-type transformers to be employed in outdoor applications despite high levels of dust and moisture.<\/p>\n\n\n\n

\u201cThe absence of oil in dry-type transformers makes them safe and suitable for many indoor applications,\u201d says David Claassen, managing director of Trafo Power Solutions. \u201cHowever, we are now installing them increasingly in very demanding outdoor conditions due to their safety, reliability and low maintenance cost.\u201d<\/p>\n\n\n\n

This trend is not being held back by the fact that dry-type transformers are air-cooled, he explains, as the enclosures are carefully designed to facilitate adequate cooling. The temperature rise of each transformer needs to be considered in the enclosure design, alongside the customer\u2019s available footprint – so that the dimensions of the enclosure are suitable.<\/p>\n\n\n\n

\u201cTransformers must of course be protected from water, and also from dust which can inhibit heat losses and potentially even lead to short circuits,\u201d he says. \u201cOur IP-rated design ensures that we meet the demands of the prevailing outdoor conditions while cooling the transformer so that it operates optimally and safely.\u201d<\/p>\n\n\n\n

IP rating is a ranking of the level of protection against ingress that an enclosure can provide. In an IP rating of 65, for example, the first digit refers to the level of solid particles being excluded \u2013 while the second digit refers to moisture levels. Trafo Power Solutions regularly designs transformer enclosures for high IP ratings such as IP65 or IP66.<\/p>\n\n\n\n

\n
\"A<\/a>
A dry-type transformer in an IP23 enclosure for a mining application. <\/figcaption><\/figure>\n\n\n\n
\"Custom<\/a>
Custom built enclosures housing transformers for a specialised mining application.<\/figcaption><\/figure>\n\n\n\n
\"A<\/a>
A 12500 kVA cast resin transformer fitted in an IP23 enclosure. <\/figcaption><\/figure>\n\n\n\n
\"A<\/a>
A 1600 kVA dry-type transformer in an IP31 enclosure suitable for corrosive areas.<\/figcaption><\/figure>\n<\/figure>\n\n\n\n

\u201cThis means that we can provide a level 6 protection against dust, which is essentially dust tight,\u201d he says. \u201cThe level 5 or 6 moisture protection demonstrates that the enclosure will protect the transformer against jets of water and even water from heavy seas.\u201d<\/p>\n\n\n\n

He notes that most enclosure designs can disperse heat by the natural flow of air. There are various levels of temperature rise associated with the transformer\u2019s specific insulation class, however, so other technologies can also be applied. Certain applications will require a forced air system, operating in a closed loop to ensure sufficient insulation from outside conditions.<\/p>\n\n\n\n

\u201cIf more cooling is needed, there are also technologies which use water as a medium to effectively remove heat from an enclosure,\u201d he says. \u201cThere are other challenges too that we can address, such as the risk of condensation where outdoor temperatures are very cold.\u201d<\/p>\n\n\n\n

Trafo Power Solutions collaborates closely with its Italy-based technology partner TMC Transformers to design the enclosures at the same time as the transformer itself \u2013 delivering optimal results for the customer.<\/p>\n","protected":false},"excerpt":{"rendered":"

Dry-type transformers have traditionally been used indoors because of their intrinsic safety, but IP-rated enclosures now allow them to be used in a range of demanding outdoor applications. Trafo Power Solutions can design enclosures that keep out even fine coal dust, while still ensuring that the transformer is effectively cooled. <\/p>\n","protected":false},"author":2,"featured_media":6703,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[31],"tags":[123],"class_list":["post-6698","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-client-focus","tag-trafo-power-solutions"],"_links":{"self":[{"href":"https:\/\/www.coralynne.co.za\/blog\/wp-json\/wp\/v2\/posts\/6698","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.coralynne.co.za\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.coralynne.co.za\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.coralynne.co.za\/blog\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.coralynne.co.za\/blog\/wp-json\/wp\/v2\/comments?post=6698"}],"version-history":[{"count":0,"href":"https:\/\/www.coralynne.co.za\/blog\/wp-json\/wp\/v2\/posts\/6698\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.coralynne.co.za\/blog\/wp-json\/wp\/v2\/media\/6703"}],"wp:attachment":[{"href":"https:\/\/www.coralynne.co.za\/blog\/wp-json\/wp\/v2\/media?parent=6698"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.coralynne.co.za\/blog\/wp-json\/wp\/v2\/categories?post=6698"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.coralynne.co.za\/blog\/wp-json\/wp\/v2\/tags?post=6698"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}