{"id":10580,"date":"2026-08-29T23:42:58","date_gmt":"2026-08-29T15:42:58","guid":{"rendered":"https:\/\/q8bbzjnpm5.wpdns.site\/?p=10580"},"modified":"2026-08-29T23:42:58","modified_gmt":"2026-08-29T15:42:58","slug":"how-to-choose-the-right-ip-rating-for-your-transformer-a-buyer-s-guide","status":"publish","type":"post","link":"https:\/\/subian-electric.com\/de\/news\/how-to-choose-the-right-ip-rating-for-your-transformer-a-buyer-s-guide\/","title":{"rendered":"So w\u00e4hlen Sie die richtige IP-Bewertung f\u00fcr Ihren Transformator: Ein K\u00e4uferleitfaden"},"content":{"rendered":"<p>Eine Lebensmittelverarbeitungsanlage in Thailand w\u00e4hlte die IP23-Bewertung f\u00fcr ihre neuen Trockentransformatoren, da diese in einem klimatisierten Elektroraum installiert werden sollten. Was dem K\u00e4ufer nicht offenbart wurde, war die Tatsache, dass die HVAC-Anlage dieses Raumes nachts abgeschaltet wurde, um Energie zu sparen, sowie dass das Reinigungsteam in der Nacht den Boden zwei Meter von der Umhausung entfernt reinigen w\u00fcrde. Das Ergebnis war eine feuchte Verfolgung, die zum Versagen der Isolierung des ersten Transformators innerhalb von acht Monaten f\u00fchrte. Der Hauptfehler in Bezug auf die Spezifikationen betraf nicht die Transformationsspannung, da diese erf\u00fcllt war; der Hauptfehler trat in Bezug auf die IP-Bewertung auf, da IP23 als unzureichend angesehen wird, wenn Wasser im Raum vorhanden ist.<\/p>\n<p>IP-Bewertungen sind die beste Option, um zuverl\u00e4ssige Isolationsspezifikationen zu erhalten. Dies bietet die Definitionen jeder Ziffer im zugeh\u00f6rigen Code zu IP-Stufen sowie wie man bestimmt, welche IP-Stufe f\u00fcr jede Umgebung erforderlich ist.<\/p>\n<blockquote><p>Um es einfach auszudr\u00fccken, besteht die IP-Bewertung aus zwei Ziffern: Die erste Zahl (0 bis 6) gibt das Niveau des Schutzes gegen feste Objekte an, wobei 4 bedeutet, dass das Ger\u00e4t staubgesch\u00fctzt ist, und 6 bedeutet, dass es vollst\u00e4ndig gegen Staub gesch\u00fctzt ist; die zweite Zahl (0\u20138) zeigt das Niveau des Wasserschutzes an: 3 bedeutet, dass das Ger\u00e4t gegen tropfendes Wasser gesch\u00fctzt ist, 5 \u2013 gegen Spritzwasser, 6 \u2013 gegen starke Wasserstrahlen; und 7 \u2013 gegen das Eintauchen in Wasser \u00fcber einen kurzen Zeitraum. Bei der Auswahl von Transformatoren ist IP21-IP23 f\u00fcr Innenr\u00e4ume geeignet, IP44 ist gut f\u00fcr staubige Bereiche, und IP54 wird f\u00fcr industrielle Anwendungen im Freien verwendet.<\/p><\/blockquote>\n<p style=\"text-align: center;\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-10581\" src=\"https:\/\/subian-electric.com\/wp-content\/uploads\/2026\/08\/How-To-Choose-The-Right-Ip-Rating-For-Your-Transformer-A-Buyers-Guide.webp\" alt=\"How To Choose The Right Ip Rating For Your Transformer A Buyer's Guide\" width=\"1448\" height=\"1086\" \/><\/p>\n<hr \/>\n<h2 id=\"ip-code\">Was der IP-Code tats\u00e4chlich bedeutet<\/h2>\n<p>Eine IP-Bewertung einer Umhausung besteht aus IP, gefolgt von zwei Zahlen wie IP54, IP56 und IP65. Die erste Ziffer gibt die Menge des Schutzes vor festen Objekten (Staub, Finger usw.) an, die von 0 (kein Schutz) bis 6 (staubdicht) reicht. Die zweite Ziffer gibt den Schutz vor Wasser an, mit derselben Skala von Werten von 0 (keine Widerstand) bis 8 (vollst\u00e4ndiges Eintauchen). Diese Klassifizierung wird gem\u00e4\u00df der IEC-Norm 60529 festgelegt und \u00fcberpr\u00fcft, was bedeutet, dass eine IP-Bewertung eine g\u00fcltige Zertifizierung ist.<\/p>\n<p>Die Bewertung f\u00fcr Transformatoren gibt den Typ der Umhausung an, die die spannungsf\u00fchrenden Teile in der Struktur sch\u00fctzt, n\u00e4mlich den Tank und seine Teile f\u00fcr \u00d6ltransformatoren sowie den Schrank mit Wicklungen von Trockentransformatoren. Sobald die richtige IP-Bewertung gew\u00e4hlt werden sollte, um das beste Schutzniveau zu bieten, ohne daf\u00fcr zu viel zu bezahlen.<\/p>\n<h2 id=\"first-digit\">Erste Ziffer: Schutz vor festen Partikeln<\/h2>\n<p>Der Bereich der ersten Ziffer f\u00fcr Transformatorenpraxis liegt zwischen 2 und 6:<\/p>\n<table>\n<thead>\n<tr>\n<th>Erste Ziffer<\/th>\n<th>Schutz gegen<\/th>\n<th>Transformatorennutzung<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>0<\/td>\n<td>Kein Schutz<\/td>\n<td>Nicht f\u00fcr Transformatoren verwendet<\/td>\n<\/tr>\n<tr>\n<td>1<\/td>\n<td>Objekte &gt; 50 mm (H\u00e4nde)<\/td>\n<td>Freiliegende Buchsenbereiche<\/td>\n<\/tr>\n<tr>\n<td>2<\/td>\n<td>Objekte &gt; 12 mm (Finger)<\/td>\n<td>Grundschutz f\u00fcr Innenr\u00e4ume<\/td>\n<\/tr>\n<tr>\n<td>3<\/td>\n<td>Objekte &gt; 2,5 mm (Werkzeuge, Dr\u00e4hte)<\/td>\n<td>Innenr\u00e4ume mit Trockenumhausungen<\/td>\n<\/tr>\n<tr>\n<td>4<\/td>\n<td>Objekte &gt; 1 mm (kleine Dr\u00e4hte)<\/td>\n<td>Staubgesch\u00fctzt \u2014 staubige Innenr\u00e4ume<\/td>\n<\/tr>\n<tr>\n<td>5<\/td>\n<td>Staubgesch\u00fctzt (begrenzter Zugang)<\/td>\n<td>Industrieller Standard im Freien (mit IP5x)<\/td>\n<\/tr>\n<tr>\n<td>6<\/td>\n<td>Staubdicht<\/td>\n<td>Starker Staub (Bergwerke, Zement, Getreide)<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>Es ist wichtig, den Unterschied zwischen den Stufen 5 und 6 zu beachten: IP5x ist \u201cstaubgesch\u00fctzt\u201d, wo etwas Staub eindringen kann, aber die Funktion nicht beeintr\u00e4chtigt; w\u00e4hrend IP6x bedeutet, dass dieser Typ staubdicht ist. Verwenden Sie Stufe 5 f\u00fcr die meisten industriellen Anwendungen im Freien, aber f\u00fcr die Mineralverarbeitung, die Getreidehandhabung und die Metallurgie wenden Sie Stufe 6 an.<\/p>\n<p style=\"text-align: center;\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-10582\" src=\"https:\/\/subian-electric.com\/wp-content\/uploads\/2026\/08\/IP-rating.webp\" alt=\"IP-Bewertung\" width=\"1448\" height=\"1086\" \/><\/p>\n<h2 id=\"second-digit\">Zweite Ziffer: Wasserschutz<\/h2>\n<p>Die zweite Ziffer ist der Bereich, in dem die meisten Spezifikationsfehler auftreten, da der Unterschied zwischen 3, 5 und 7 physikalisch ist:<\/p>\n<table>\n<thead>\n<tr>\n<th>Zweite Ziffer<\/th>\n<th>Schutz gegen<\/th>\n<th>Typische Verwendung<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>0<\/td>\n<td>Keine<\/td>\n<td>\u2014<\/td>\n<\/tr>\n<tr>\n<td>1<\/td>\n<td>Vertikales Tropfwasser<\/td>\n<td>\u2014<\/td>\n<\/tr>\n<tr>\n<td>2<\/td>\n<td>Tropfen bei 15\u00b0 Neigung<\/td>\n<td>\u2014<\/td>\n<\/tr>\n<tr>\n<td>3<\/td>\n<td>Spritzendes Wasser (60\u00b0 von der Vertikalen)<\/td>\n<td>Innenbereich trocken, grundlegender Waschschutz<\/td>\n<\/tr>\n<tr>\n<td>4<\/td>\n<td>Spritzendes Wasser aus jeder Richtung<\/td>\n<td>IP44 f\u00fcr staubige\/feuchte Innenr\u00e4ume<\/td>\n<\/tr>\n<tr>\n<td>5<\/td>\n<td>Niederdruckwasserstrahlen<\/td>\n<td>IP54 industrieller Standard im Freien<\/td>\n<\/tr>\n<tr>\n<td>6<\/td>\n<td>Leistungsstarke Wasserstrahlen<\/td>\n<td>IP56 Waschschutz, Lebensmittel, K\u00fcsten<\/td>\n<\/tr>\n<tr>\n<td>7<\/td>\n<td>Tempor\u00e4re Eintauchung (1 m, 30 min)<\/td>\n<td>\u00dcberschwemmungsgef\u00e4hrdete Umspannwerke<\/td>\n<\/tr>\n<tr>\n<td>8<\/td>\n<td>Dauerhafte Eintauchung<\/td>\n<td>Tauchf\u00e4hige Ger\u00e4te<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>Der Ausfall der Lebensmittelanlage war zuvor ein typischer Fehler von IP23 gegen\u00fcber IP44\/54: Wenn Wasser aus nahen Entfernungen oben (5\u20146) gespritzt wird, handelt es sich um einen Strahl (5\u20146), nicht um einen Spr\u00fchnebel (3). Wenn Reinigungsteams in der N\u00e4he mit Schl\u00e4uchen arbeiten, sollte die zweite Ziffer entweder 5 oder 6 sein, egal wie der Raum aussieht, wenn die Lichter aus sind.<\/p>\n<h2 id=\"environment-matrix\">Zuordnung von IP-Bewertungen zu Umgebungen<\/h2>\n<p>Die praktische Auswahlmatrix f\u00fcr Transformatoren, basierend auf der physischen Umgebung:<\/p>\n<table>\n<thead>\n<tr>\n<th>Umgebung<\/th>\n<th>Empfohlene IP<\/th>\n<th>Begr\u00fcndung<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Sauberes elektrisches Zimmer im Innenbereich<\/td>\n<td>IP21\u2013IP23<\/td>\n<td>Keine Staub- oder Wasserquellen; Bel\u00fcftung ist wichtig<\/td>\n<\/tr>\n<tr>\n<td>Dusty indoor hall (manufacturing)<\/td>\n<td>IP44<\/td>\n<td>Small-particle ingress blocked; splash tolerated<\/td>\n<\/tr>\n<tr>\n<td>Outdoor general industrial<\/td>\n<td>IP54<\/td>\n<td>Dust-protected + jet water; the industrial default<\/td>\n<\/tr>\n<tr>\n<td>Coastal \/ marine exposure<\/td>\n<td>IP56<\/td>\n<td>Salt spray and driven rain<\/td>\n<\/tr>\n<tr>\n<td>Food processing \/ washdown<\/td>\n<td>IP56<\/td>\n<td>High-pressure cleaning is a jet, not a splash<\/td>\n<\/tr>\n<tr>\n<td>Mining \/ cement \/ grain<\/td>\n<td>IP65\u2013IP66<\/td>\n<td>Dust-tight plus jet water<\/td>\n<\/tr>\n<tr>\n<td>Flood-prone areas<\/td>\n<td>IP67 (tank)<\/td>\n<td>Temporary immersion for a defined period<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>It is a valuable practice to visit the job site at your worst time \u2014 not at midday on a sunny Tuesday. Water and dust can get to the site from hoses, storms, crew members cleaning the site, and from process leaks. The site conditions must ensure that the enclosure should operate well at the time when it is raining massively rather than in a dry day depicted in the architect&#8217;s drawing.<\/p>\n<h2 id=\"oil-vs-dry\">Oil-Immersed vs. Dry-Type IP Requirements<\/h2>\n<p>The type of construction determines what exactly the IP rating safeguards. The tank of an oil-immersed transformer is hermetically sealed, and as the windings are immersed in oil, the enclosure protects the equipment only: the bushings, the gauges, the conservator, and the tap-changer cabinet. The windings of a dry-type transformer rely on air for cooling and are not completely shielded from the environment \u2014 thus, the enclosure acts as the first line of protection.<\/p>\n<table>\n<thead>\n<tr>\n<th>Aspekt<\/th>\n<th>\u00d6lgetaucht<\/th>\n<th>Trockentyp<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>What IP protects<\/td>\n<td>Bushings, gauges, accessories<\/td>\n<td>The windings themselves<\/td>\n<\/tr>\n<tr>\n<td>Typical indoor IP<\/td>\n<td>IP23\u2013IP44<\/td>\n<td>IP21\u2013IP44<\/td>\n<\/tr>\n<tr>\n<td>Typical outdoor IP<\/td>\n<td>IP54\u2013IP56<\/td>\n<td>IP54 (with enclosure)<\/td>\n<\/tr>\n<tr>\n<td>Windings exposed to air<\/td>\n<td>Nein<\/td>\n<td>Yes \u2014 higher IP needed in dust<\/td>\n<\/tr>\n<tr>\n<td>Flood risk<\/td>\n<td>Tank floats? \u2014 anchor it<\/td>\n<td>Sealed cabinet or elevated base<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>The practical result is that in a dusty hall, dry-type equipment requires at least an IP44 rating because dust gathers on the live coils. Meanwhile, an oil-filled machine can do with a lower protection level since the coils are immersed in oil. Thus, customers using the IP protection level of oil-filled systems for dry equipment will be placing themselves at risk of under-protection.<\/p>\n<h2 id=\"common-mistakes\">Common IP Specification Mistakes<\/h2>\n<ul>\n<li>IP21\/IP23 only states that a device can be operated in areas where there is a risk of water splashing by the water. In fact, water pressure shows the limits of IP23.<\/li>\n<li>Not adapting to any of the indoor conditions such as temperature and humidity with automation systems. HVAC issues, room doors closure and cleaning tasks create conditions that are not discussed using the term &#8220;clean room&#8221;.<\/li>\n<li>Making the mistake of thinking that IP54 means waterproof. IP54 only means water resistance but does not give any assurance if something can be submerged in the water.<\/li>\n<li>Considering the IP rating of equipment in areas with high humidity. Humidity is not equal to water pressure but humidity can, in fact, be damaging for any equipment.<\/li>\n<li>Confusing IP65 with being the best option there is. Total closure will create heat problems for dry transformers.<\/li>\n<\/ul>\n<h2 id=\"extra-options\">Beyond IP: Enclosure Extras Worth Specifying<\/h2>\n<p>The ingress protection rating mainly deals with ingress, yet other complementary features are crucial in the extreme conditions. These features include the following:<\/p>\n<ul>\n<li>Condensation heaters are fitted to ensure humidity does not exceed dew level in tropical and coastal areas \u2013 it is inexpensive and requires from 100W to 500W depending on the size of the enclosure.<\/li>\n<li>Silica gel breathers or gas-sealed conservators in oil-immersed units do not allow moisture to be drawn into the tank with cooling oil.<\/li>\n<li>Corrosion-resistant coating (either hot-dip galvanization or marine-grade paint in case of coastal installations) raises the price of the enclosure by 2-5%.<\/li>\n<li>Locking and tamper-proof doors are obligatory for pad-mounted devices installed in public places; they are needed not only to secure but also for safety purposes.<\/li>\n<li>Raising of the base and drainage system is the cheapest way to avoid flooding (300 mm clearance and necessary drainage slope will cost almost nothing).<\/li>\n<\/ul>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-10583\" style=\"text-align: center;\" src=\"https:\/\/subian-electric.com\/wp-content\/uploads\/2026\/08\/Beyond-IP-Enclosure-Extras-Worth-Specifying.webp\" alt=\"Beyond IP Enclosure Extras Worth Specifying\" width=\"1448\" height=\"1086\" \/><\/p>\n<h2 id=\"ip-cost-table\">IP Upgrade Cost Table<\/h2>\n<p>Protection costs money, but the increments are modest compared with the transformer itself \u2014 and trivial against a failure:<\/p>\n<table>\n<thead>\n<tr>\n<th>IP Upgrade<\/th>\n<th>Price Impact<\/th>\n<th>Example (500 kVA)<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>IP21 \u2192 IP23<\/td>\n<td>+1\u20132%<\/td>\n<td>+$100\u2013$300<\/td>\n<\/tr>\n<tr>\n<td>IP23 \u2192 IP44<\/td>\n<td>+2\u20134%<\/td>\n<td>+$200\u2013$600<\/td>\n<\/tr>\n<tr>\n<td>IP44 \u2192 IP54<\/td>\n<td>+3\u20136%<\/td>\n<td>+$300\u2013$900<\/td>\n<\/tr>\n<tr>\n<td>IP54 \u2192 IP56<\/td>\n<td>+2\u20134%<\/td>\n<td>+$200\u2013$700<\/td>\n<\/tr>\n<tr>\n<td>Add anti-condensation heater<\/td>\n<td>+$150\u2013$400 (fixed)<\/td>\n<td>+$150\u2013$400<\/td>\n<\/tr>\n<tr>\n<td>Marine-grade coating<\/td>\n<td>+2\u20135%<\/td>\n<td>+$200\u2013$800<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>A fully hardened 500 kVA unit &#8211; as in IP56, heaters, marine coating &#8211; costs approximately $9,500 to $19,000, which varies depending on the manufacturer and market. Compare that with one failure due to moisture that costs $8,000-$30,000 plus additional downtime. The enclosure is the cheapest form of protection according to specification.<\/p>\n<h2 id=\"brands-prices\">Brands and Prices by IP Level<\/h2>\n<p>Depending on the price, IP ratings are available. International manufacturers sell enclosures at their regular high prices, while Chinese companies certified by IEC are selling the same products at much lower prices and receiving the same test results as specified in IEC 60529.<\/p>\n<table>\n<thead>\n<tr>\n<th>Marke<\/th>\n<th>Position<\/th>\n<th>500 kVA IP54<\/th>\n<th>500 kVA IP56<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>ABB<\/td>\n<td>Global support, full range<\/td>\n<td>$18.000\u2013$30.000<\/td>\n<td>$19,000\u2013$33,000<\/td>\n<\/tr>\n<tr>\n<td>Siemens<\/td>\n<td>Efficiency, digital options<\/td>\n<td>$18,000\u2013$32,000<\/td>\n<td>$19,000\u2013$35,000<\/td>\n<\/tr>\n<tr>\n<td>Schneider Electric<\/td>\n<td>Dry-type strength<\/td>\n<td>$15,000\u2013$28,000<\/td>\n<td>$16.000\u2013$30.000<\/td>\n<\/tr>\n<tr>\n<td>Hitachi Energie<\/td>\n<td>Grid and industrial<\/td>\n<td>$17,000\u2013$30,000<\/td>\n<td>$18,000\u2013$32,000<\/td>\n<\/tr>\n<tr>\n<td>Eaton<\/td>\n<td>North America compliance<\/td>\n<td>$14.000\u2013$26.000<\/td>\n<td>$15,000\u2013$28,000<\/td>\n<\/tr>\n<tr>\n<td>Jiangsu Subian Electric Power<\/td>\n<td>IEC 60076, copper, test reports<\/td>\n<td>$8.000\u2013$16.000<\/td>\n<td>$9,000\u2013$17,000<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>Prices shown are on FOB China terms and are influenced by the specifications and brand chosen. The international brands above are the touchstone for quality and service for enclosures. Jiangsu Subian Electric Power has the helpful feature of taking the IP ratings seriously as opposed to just painting them on the transformers- that is, the company manufactures IEC 60076-compliant transformers equipped with IP54\/IP56 enclosures, anti-condensation heaters, and marine-grade coatings as standard options while IP rating is tested and verified in accordance with IEC 60529. When buying a hardened unit, one can see the difference between a measured IP56 and a claimed IP56 in a food plant that had one year of pouring rains and hosing. By having documented tests done, a supplier ensures that the specification will be provided with certainty.<\/p>\n<h2 id=\"faq\">H\u00e4ufig gestellte Fragen<\/h2>\n<h3>What IP rating should a transformer have outdoors?<\/h3>\n<p>IP54 is the standard for transformers suitable for outdoor installations since they provide protection against dust and low-pressure water jets, don\u2019t hesitate to use the IP56 rating if the transformer is installed in areas close to the sea, being washed down or facing heavy rain. The second digit is the most important one: 4 is splash water, 5 is jets and 6 is strong jets, so check what water pressure will be present on site.<\/p>\n<h3>Is IP65 better than IP54 for a transformer?<\/h3>\n<p>It should be noted that IP65 rating is not synonymous with automatic protection. Even though it ensures both resistance to dust and water, a sealed enclosure would imply internal heat confinement. As a result, in the summers, an IP65 non-ventilated instance may work at a higher temperature level than an IP44 ventilated one, leading to a decrease in the service life of the insulation. Hence, make sure that the IP rating of a piece of equipment matches the conditions where it is applied, taking \u2013 if possible \u2013 all measures to get rid of excess heat generation within the enclosure.<\/p>\n<h3>Does the IP rating apply the same way to oil-immersed and dry-type transformers?<\/h3>\n<p>No. In oil-immersed transformers, the windings are kept in oil, ensuring that the IP contributes to the protection of the equipment. In the case of dry-type transformers, the windings are in contact with air, making the enclosure the first line of defense. In the dusty environment, the dry transformer would require greater protection.<\/p>\n<h3>What is the cost difference between IP23 and IP56 transformers?<\/h3>\n<p>Approximately 5-12% of the cost price. For a larger 500 kVA transformer, IP23 to IP56 would range from $500 to $1,800 whereas IP56 plus the heaters and marine paint would cost an additional $1,000 to $2,800. When considering that moisture-related damage costs anywhere from $8,000 to $30,000 and results in downtime, the upgrade becomes an affordable insurance policy.<\/p>\n<h3>Can a transformer IP rating be upgraded after delivery?<\/h3>\n<p>It&#8217;s very unusual, and never simple. The expense of reconstructing a housing, supplying heating systems, or recoating after shipment ranges from 15 to 40 percent of the unit cost and nullifies the original certification. The IP rating must be determined prior to placing an order since matching the environment at the outset is the only viable option financially.<\/p>\n<h2 id=\"references\">Referenzen<\/h2>\n<ul>\n<li><a href=\"https:\/\/webstore.iec.ch\/en\/publication\/2698\" rel=\"nofollow noopener\" target=\"_blank\">IEC 60529: Degrees of Protection Provided by Enclosures (IP Code)<\/a> \u2014 the governing standard for IP ratings and test methods.<\/li>\n<li><a href=\"https:\/\/webstore.iec.ch\/en\/publication\/200\" rel=\"nofollow noopener\" target=\"_blank\">IEC 60076-1: Leistungstransformatoren \u2014 Allgemeines<\/a> \u2014 ratings, ambient assumptions, and enclosure requirements for power transformers.<\/li>\n<li><a href=\"https:\/\/standards.ieee.org\/ieee\/C57.12.00\/6735\/\" rel=\"nofollow noopener\" target=\"_blank\">IEEE C57.12.00: Allgemeine Anforderungen f\u00fcr fl\u00fcssigkeitsgetauchte Transformatoren<\/a> \u2014 North American enclosure and testing requirements.<\/li>\n<li><a href=\"https:\/\/www.electrical4u.com\/ip-rating\/\" rel=\"nofollow noopener\" target=\"_blank\">Electrical4U \u2014 IP Rating Guide<\/a> \u2014 a clear reference for IP code definitions and examples.<\/li>\n<li><a href=\"https:\/\/www.nfpa.org\/codes-and-standards\/all-codes-and-standards\/list-of-codes-and-standards\/detail?code=70\" rel=\"nofollow noopener\" target=\"_blank\">NFPA 70: Nationaler Elektrotechnischer Kodex<\/a> \u2014 North American installation rules for transformer locations and enclosure requirements.<\/li>\n<li><a href=\"https:\/\/en.wikipedia.org\/wiki\/IP_code\" rel=\"nofollow noopener\" target=\"_blank\">Wikipedia \u2014 IP Code<\/a> \u2014 the definition and history of the Ingress Protection code.<\/li>\n<\/ul>\n<h2 id=\"conclusion\">Fazit<\/h2>\n<p>The process involving the selection of the IP (Ingress Protection) rating for transformers entails correlating the enclosure to the surrounding conditions in which it will operate. Conditions include water and dust ingress, wet area cleaning, and floods \u2013 not conditions like sunny days. The numerical code consists of two digits: the first indicates the level of protection from solid ingress while the second one provides the information about water ingress according to IEC 60529.<\/p>\n<ul>\n<li>Use IP21 to IP23 in clean and ventilated indoor areas, IP44 in dusty places, IP54 where industrial outdoor operations are done, and IP56 in places with frequent washing procedures, seasonally, or in coastal areas.<\/li>\n<li>It should be kept in mind that unlike oil transformers the dry-type transformers expose their windings and thus the IP of the former has to usually be higher than for the latter.<\/li>\n<li>Consider using additional heaters for the prevention of counter condensation in tropical, coastal, or cyclic parts of HVAC systems.<\/li>\n<li>It is also necessary to understand the importance of the previous stages of the production process in the wiring work and monitoring practices of the IP rating testing procedures.<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"<p>A food-processing facility in Thailand chose the IP23 rating for its new dry-type transformers because they were set to be installed inside an air-conditioned electrical room. What was not revealed to the purchaser was the fact that this room\u2019s HVAC would shut down nightly to conserve energy as well as that the late-night cleaning crew [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":10581,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[77],"tags":[],"class_list":["post-10580","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news"],"blocksy_meta":[],"acf":[],"_links":{"self":[{"href":"https:\/\/subian-electric.com\/de\/wp-json\/wp\/v2\/posts\/10580","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/subian-electric.com\/de\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/subian-electric.com\/de\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/subian-electric.com\/de\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/subian-electric.com\/de\/wp-json\/wp\/v2\/comments?post=10580"}],"version-history":[{"count":3,"href":"https:\/\/subian-electric.com\/de\/wp-json\/wp\/v2\/posts\/10580\/revisions"}],"predecessor-version":[{"id":11099,"href":"https:\/\/subian-electric.com\/de\/wp-json\/wp\/v2\/posts\/10580\/revisions\/11099"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/subian-electric.com\/de\/wp-json\/wp\/v2\/media\/10581"}],"wp:attachment":[{"href":"https:\/\/subian-electric.com\/de\/wp-json\/wp\/v2\/media?parent=10580"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/subian-electric.com\/de\/wp-json\/wp\/v2\/categories?post=10580"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/subian-electric.com\/de\/wp-json\/wp\/v2\/tags?post=10580"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}