{"id":10815,"date":"2026-08-29T23:43:14","date_gmt":"2026-08-29T15:43:14","guid":{"rendered":"https:\/\/q8bbzjnpm5.wpdns.site\/?p=10815"},"modified":"2026-08-29T23:43:14","modified_gmt":"2026-08-29T15:43:14","slug":"power-infrastructure-box-type-transformer-enclosures-explained","status":"publish","type":"post","link":"https:\/\/subian-electric.com\/ja\/news\/power-infrastructure-box-type-transformer-enclosures-explained\/","title":{"rendered":"\u96fb\u529b\u30a4\u30f3\u30d5\u30e9\u30b9\u30c8\u30e9\u30af\u30c1\u30e3\uff1a\u30dc\u30c3\u30af\u30b9\u578b\u5909\u5727\u5668\u30a8\u30f3\u30af\u30ed\u30fc\u30b8\u30e3\u306e\u8aac\u660e"},"content":{"rendered":"<p>Ultimately, all electric power distribution projects face the same fundamental engineering question: where is the appropriate location for transformers? This utility found an answer in a heavy-duty steel enclosure in the parking lot corner of a crowded Philippines street. The transformer enclosure consists of a 1,000 kVA transformer, ring main unit and low-voltage panel in one weatherproof cabinet. This option replaced a planned concrete substation and protected hundreds of thousands of dollars of utility investment while reducing the construction time up to four months. The decision for a utility in favor of the box-type enclosure instead of the traditional transformer made a success of the modern compact substation.<\/p>\n<p>The article describes box-type transformer enclosures such as their definition, functionality, construction, and applications in modern electrical power systems.<\/p>\n<blockquote><p>In brief, a box- transformer enclosure refers to box-type substation weatherproof covering, which protects the substation, MV switchgear, and LV switchgear against adverse weather conditions, dirt, animals, physical damage or disturbances. The enclosure is built according to the requirements of the standard IEC 62271-202 and is rated IP54\/IP55 as per IEC 60529 and presents electronic protection, flood event protection, and tamper-proof design.<\/p><\/blockquote>\n<p style=\"text-align: center;\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-10816\" src=\"https:\/\/subian-electric.com\/wp-content\/uploads\/2026\/08\/Power-Infrastructure-Box-Type-Transformer-Enclosures-Explained.webp\" alt=\"Power Infrastructure Box Type Transformer Enclosures Explained\" width=\"1448\" height=\"1086\" \/><\/p>\n<hr \/>\n<h2 id=\"what\">What Is a Box-Type Transformer Enclosure?<\/h2>\n<p>A box-type transformer enclosure is a type of housing that comprises a compact pre-assembled transformer substation. This steel cabinet functions as the exterior part of the transformer that has inside, in most designs the MV and LV switchgear, measuring and protection devices and equipment. It acts as a protector between the apparatus and the surroundings, performing a number of functions at the same time including weather protection, control of cooling air flow, protection from tampers and vandalism acts, floods and animals, and keeping the danger inside in case of failure within the unit.<\/p>\n<p>The family of the product is designated in IEC 62271-202 (Prefabricated transformers). This position describes the requirements for the housing construction, compartments, safety interlocks and types of full testing of the enclosure. The IP rating that is established by IEC 60529 determines the ability of the enclosure for exclusion of the water and dusts and usually its designation is IP54 or IP55.In North America, a comparable requirement is IEEE C57.12.20 which gives consideration to such enclosure types as \u201cdead front\u201d and also the fact that the enclosure should resist tampering.<\/p>\n<p>Understanding the enclosure is extremely important since its efficiency will have an impact on the lifespan of the substation, its reliability, and safety level which should be even more than that of the transformer. The worst transformer in any good enclosure will work well for decades while the best transformer will fail within a short period of time due to the poor enclosure.<\/p>\n<h2 id=\"role\">Why Enclosures Matter in Power Infrastructure<\/h2>\n<p>The following five benefits have made box-type transformer enclosures indispensable:<\/p>\n<ul>\n<li>Reduced area: Instead of a building and fenced yard, an enclosure can take just 10-40m\u00b2 of space and save more land for a city.<\/li>\n<li>Quickness: Enclosures built in factories help avoid civil construction works lasting for months; the entire installation process becomes only a matter of 2-5 days.<\/li>\n<li>Safety of installation locations: Enclosures are resistant, equipped with locks, so they can be installed close to pedestrian walkways, schools, and car parking places and still meet all security regulations.<\/li>\n<li>Prevention of the influence of external factors: An enclosure protects from rain, dirt, salt, insects, etc., which is undoubtedly important for transformers not to fail.<\/li>\n<li>Low cost: The cost of an enclosure is much lower than that of a building, while the final price of an installation system is 20-40% lower than that of a site-built alternative.<\/li>\n<\/ul>\n<p>Those are the grounds for the shift in the market towards the use of boxes as the main type of transformer stations.<\/p>\n<p style=\"text-align: center;\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-10817\" src=\"https:\/\/subian-electric.com\/wp-content\/uploads\/2026\/08\/Enclosure-Engineering-Materials-and-Protection.webp\" alt=\"Enclosure Engineering Materials and Protection\" width=\"1448\" height=\"1086\" \/><\/p>\n<h2 id=\"design\">Enclosure Engineering: Materials and Protection<\/h2>\n<p>The quality of an enclosure depends on the materials used, construction techniques, and environmental performance.<\/p>\n<table>\n<thead>\n<tr>\n<th>\u8981\u7d20<\/th>\n<th>\u4ed5\u69d8<\/th>\n<th>Protection Delivered<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Enclosure material<\/td>\n<td>Painted carbon steel, stainless steel, GRP\/composite<\/td>\n<td>Structural strength and corrosion resistance<\/td>\n<\/tr>\n<tr>\n<td>IP rating<\/td>\n<td>IP54 (dust + water splash), IP55 (water jets)<\/td>\n<td>Exclusion of dust, rain, and water spray<\/td>\n<\/tr>\n<tr>\n<td>Roof and drip<\/td>\n<td>Overhanging roof, drip channels, gaskets<\/td>\n<td>Water shedding away from doors and seams<\/td>\n<\/tr>\n<tr>\n<td>\u30d9\u30fc\u30b9<\/td>\n<td>Hot-dip galvanized, raised 500\u2013800 mm<\/td>\n<td>Flood and ground-moisture resistance<\/td>\n<\/tr>\n<tr>\n<td>Ventilation<\/td>\n<td>Baffled, filtered louvers with IP-rated airflow<\/td>\n<td>Transformer cooling without weather ingress<\/td>\n<\/tr>\n<tr>\n<td>Locking and tamper<\/td>\n<td>Padlocks, internal hinges, interlocks<\/td>\n<td>Unauthorized access prevention<\/td>\n<\/tr>\n<tr>\n<td>Corrosion protection<\/td>\n<td>Marine-grade paint, anodized hardware<\/td>\n<td>Salt-spray and UV resistance in coastal sites<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>Engineering requires a trade-off between ventilation and protection. Thus an enclosure provides airflow to the transformer for effective heat dissipation but at the same time is susceptible to rain, dust, and possible animal entry. However, it is possible to design efficient enclosures that have baffled and filtered vents achieving IP54 rating while ensuring the thermal performance demanded by the IEC 62271-202 temperature rise test.<\/p>\n<h2 id=\"components\">Internal Compartments<\/h2>\n<p>It is usually equipped with compartments of the following five types:<\/p>\n<ul>\n<li>MV compartment: RMUs or vacuum breaker switchboards with cable boxes, controls, interlocks, and indicators that can be accessed directly.<\/li>\n<li>Transformer compartment: housing the transformer in addition to the oil reservoir, ventilation system, and temperature alarms; door is interlocked with MV disconnection.<\/li>\n<li>LV compartment: housing the low-voltage switchboard, metering, outgoing feeders, and optional capacitor banks.<\/li>\n<li>Auxiliary zone: housing lighting, heating, anti-condensation control, and wiring.<\/li>\n<\/ul>\n<p>The structural division that results in the above-mentioned compartments has two goals: safety (an intern fault in one compartment does not reach the compartment\u2019s terminals, and the operator cannot access safely an energized MV switchgear) and thermal shielding (any compartments with hot sections remain within normal limits).<\/p>\n<h2 id=\"types\">Types and Materials Compared<\/h2>\n<table>\n<thead>\n<tr>\n<th>\u6750\u6599<\/th>\n<th>Cost Index<\/th>\n<th>Corrosion Resistance<\/th>\n<th>Best Environment<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Painted carbon steel<\/td>\n<td>1.0 (baseline)<\/td>\n<td>Good with marine paint<\/td>\n<td>Inland, mild climates<\/td>\n<\/tr>\n<tr>\n<td>Stainless steel (304\/316)<\/td>\n<td>1.15\u20131.30<\/td>\n<td>Excellent<\/td>\n<td>Coastal, saline, humid<\/td>\n<\/tr>\n<tr>\n<td>GRP \/ composite<\/td>\n<td>1.10\u20131.25<\/td>\n<td>Excellent, non-conductive<\/td>\n<td>Coastal, corrosive, flood zones<\/td>\n<\/tr>\n<tr>\n<td>\u30a2\u30eb\u30df\u30cb\u30a6\u30e0<\/td>\n<td>1.20\u20131.35<\/td>\n<td>Very good<\/td>\n<td>Lightweight, coastal applications<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>The selection of materials is influenced more by the environment of the site than the costs to be incurred. For example, an installation located in a coastal area that saves 20% by utilizing painted steel is likely to incur losses through rapid corrosion failures; in such conditions, using stainless steel or composites will lead to profits in a couple of years.<\/p>\n<h2 id=\"standards\">\u6a19\u6e96\u3068\u8a66\u9a13<\/h2>\n<table>\n<thead>\n<tr>\n<th>\u6a19\u6e96<\/th>\n<th>\u7bc4\u56f2<\/th>\n<th>\u4e3b\u8981\u8981\u4ef6<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>IEC 62271-202<\/td>\n<td>Prefabricated transformer substations<\/td>\n<td>Enclosure construction, interlocks, complete-unit type tests<\/td>\n<\/tr>\n<tr>\n<td>IEC 60529<\/td>\n<td>IP enclosure protection<\/td>\n<td>IP54\/IP55 for outdoor exposure<\/td>\n<\/tr>\n<tr>\n<td>IEC 60076<\/td>\n<td>\u96fb\u529b\u5909\u5727\u5668<\/td>\n<td>Transformer thermal and electrical performance<\/td>\n<\/tr>\n<tr>\n<td>IEC 62271-200<\/td>\n<td>MV metal-enclosed switchgear<\/td>\n<td>Switchgear compartment safety<\/td>\n<\/tr>\n<tr>\n<td>IEEE C57.12.27 (N. America)<\/td>\n<td>Pad-mount equipment integrity<\/td>\n<td>Dead-front, tamper resistance<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>The IEC 62271-202 temperature-rise test is able to conclusively prove whether the ventilation of the enclosure is efficient. Customers should always request the test report on the enclosure and not the transformer itself since some suppliers might be performing tests only on bare transformers, which does not illustrate the cooling properties of the enclosure.<\/p>\n<h2 id=\"compare\">Enclosure vs. Traditional Housing<\/h2>\n<table>\n<thead>\n<tr>\n<th>\u8981\u56e0<\/th>\n<th>Box-Type Enclosure<\/th>\n<th>Traditional Building<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Construction time<\/td>\n<td>Factory-built; install 2\u20135 days<\/td>\n<td>4\u201312 weeks on site<\/td>\n<\/tr>\n<tr>\n<td>Cost<\/td>\n<td>Fraction of a building<\/td>\n<td>High civil and labor cost<\/td>\n<\/tr>\n<tr>\n<td>Footprint<\/td>\n<td>10\u201340 m\u00b2<\/td>\n<td>100+ m\u00b2 with access<\/td>\n<\/tr>\n<tr>\n<td>Quality control<\/td>\n<td>Factory type-tested<\/td>\n<td>Site-dependent<\/td>\n<\/tr>\n<tr>\n<td>Relocation<\/td>\n<td>Yes<\/td>\n<td>No<\/td>\n<\/tr>\n<tr>\n<td>Flood resistance<\/td>\n<td>Elevated plinth options<\/td>\n<td>Site-dependent<\/td>\n<\/tr>\n<tr>\n<td>\u6700\u9069<\/td>\n<td>New MV\/LV distribution points<\/td>\n<td>Transmission-level stations<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>In the voltages above 40.5 kV, conventional structures and outdoor air-insulated designs remain the standard. For voltages below this level, on the contrary box-type enclosure is recognized as the leading solution, being cheaper, quicker to construct and offering better quality than field-built alternatives.<\/p>\n<h2 id=\"applications\">Application Areas<\/h2>\n<ul>\n<li>Urban delivery systems involve setting up residential blocks, malls, and offices until the buildings and pathways represent a compact and secure system.<\/li>\n<li>Industrial units comprise individual factories, which can be expanded by 400-1600 kVA sections.<\/li>\n<li>Renewable power consists of solar and wind installations that incorporate individual units to act as the converter from the solar specific energy to the grid.<\/li>\n<li>Rural electrification takes place by means of mini units, enabling villages to be connected to the grid with minimal costs.<\/li>\n<li>Coastal and desert locations need stainless steel and composite units for protection from sand and salt spray.<\/li>\n<li>Mining and remote operations can be done on an industrial basis in case of a lack of any building capabilities in the area.<\/li>\n<\/ul>\n<h2 id=\"costs\">Costs and Price Ranges<\/h2>\n<p>Enclosure costs vary according to materials and size for a complete box-type substation. The following figures are a guide for the enclosure part of a complete unit:<\/p>\n<table>\n<thead>\n<tr>\n<th>\u5b9a\u683c<\/th>\n<th>Enclosure Size (approx.)<\/th>\n<th>Enclosure Price (USD)<\/th>\n<th>Complete Substation (USD)<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>100\u2013315 kVA<\/td>\n<td>2.0 \u00d7 3.5 m<\/td>\n<td>$800\u2013$1,800<\/td>\n<td>$4,000\u2013$12,000<\/td>\n<\/tr>\n<tr>\n<td>400\u2013630 kVA<\/td>\n<td>2.4 \u00d7 4.5 m<\/td>\n<td>$1,500\u2013$2,800<\/td>\n<td>$7,000\u2013$20,000<\/td>\n<\/tr>\n<tr>\n<td>800\u20131,250 kVA<\/td>\n<td>2.6 \u00d7 5.5 m<\/td>\n<td>$2,200\u2013$4,000<\/td>\n<td>$11,000\u2013$33,000<\/td>\n<\/tr>\n<tr>\n<td>1,600\u20132,500 kVA<\/td>\n<td>3.0 \u00d7 7.0 m<\/td>\n<td>$3,500\u2013$7,000<\/td>\n<td>$24,000\u2013$60,000<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>As compared with painted steel, stainless steel adds 15% to 30%, composite adds 10-25%, and IP55\/anti-condensation upgrades costs $300-1,500. All prices shown are always FOB and vary distinctly based on specification, brand, and region.<\/p>\n<h2 id=\"brands\">Top Brands &amp; Price Comparison<\/h2>\n<table>\n<thead>\n<tr>\n<th>\u30d6\u30e9\u30f3\u30c9<\/th>\n<th>\u56fd<\/th>\n<th>Enclosure\/Compact Substation Strengths<\/th>\n<th>Indicative Price \u2014 1,000 kVA (USD)<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u30b7\u30e5\u30ca\u30a4\u30c0\u30fc\u30a8\u30ec\u30af\u30c8\u30ea\u30c3\u30af<\/td>\n<td>\u30d5\u30e9\u30f3\u30b9<\/td>\n<td>RMU integration, global compact substation range<\/td>\n<td>$22,000\u2013$38,000<\/td>\n<\/tr>\n<tr>\n<td>\u30b7\u30fc\u30e1\u30f3\u30b9<\/td>\n<td>\u30c9\u30a4\u30c4<\/td>\n<td>Digital options, integrated protection systems<\/td>\n<td>$23,000\u2013$40,000<\/td>\n<\/tr>\n<tr>\n<td>ABB \/ Hitachi Energy<\/td>\n<td>Switzerland<\/td>\n<td>Broad portfolio, strong utility references<\/td>\n<td>$22,000\u2013$39,000<\/td>\n<\/tr>\n<tr>\n<td>\u30a4\u30fc\u30c8\u30f3<\/td>\n<td>USA<\/td>\n<td>Pad-mount and North American market strength<\/td>\n<td>$20,000\u2013$36,000<\/td>\n<\/tr>\n<tr>\n<td>ZPUE \/ AUSY (specialists)<\/td>\n<td>Europe<\/td>\n<td>Dedicated prefab substation engineering<\/td>\n<td>$22,000\u2013$45,000<\/td>\n<\/tr>\n<tr>\n<td>\u6c5f\u8607\u7701\u8607\u8fba\u96fb\u529b<\/td>\n<td>\u4e2d\u56fd<\/td>\n<td>IEC 62271-202 enclosures, oil\/dry options, OEM<\/td>\n<td>$11,000\u2013$33,000<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>The major global companies offer brand confidence, established lines of RMU products, and world-class service \u2014 something crucial for large utility tenders. Jiangsu Subian Electric Power produces boxes of transformers and complete compact substations complying with IEC 62271-202 norms from painted steel, stainless steel, or composites and insular transformers at around 40-55% of the European prices. For EPC companies, utilities, and developers standardizing substations at various sites, Subian has an attractive combination of IEC certification, factory testings, export experience, and OEM customization, which makes it feasible to appear in shortlists along with the major global players.<\/p>\n<p style=\"text-align: center;\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-10818\" src=\"https:\/\/subian-electric.com\/wp-content\/uploads\/2026\/08\/How-to-Choose-an-Enclosure.webp\" alt=\"How to Choose an Enclosure\" width=\"1448\" height=\"1086\" \/><\/p>\n<h2 id=\"howtochoose\">How to Choose an Enclosure<\/h2>\n<ul>\n<li>The appropriate environmental condition must first be matched: for coastal\/corrosive, stainless or composite must be used, and the benign inland location requires the painted steel with the marine-grade finish.<\/li>\n<li>The IP rating must also be validated: IP54 at minimum; IP55 where water jets or severe weather might expected.<\/li>\n<li>The ventilation performance must also be checked: the IEC 62271-202 temperature-rise test must be performed with the enclosure installed.<\/li>\n<li>Tamper resistance and locking must be verified for public access locations.<\/li>\n<li>The flood risk must also be assessed: when flooding is a possibility elevation of the enclosure must be done through the use of skid mounting.<\/li>\n<li>Things to consider for future growth would be to look for an enclosure series for larger transformer installations in the future.<\/li>\n<li>Make a comparison based on losses and costs, instead of the enclosure prices only.<\/li>\n<\/ul>\n<h2 id=\"faq\">\u3088\u304f\u3042\u308b\u8cea\u554f<\/h2>\n<h3>How much does a box-type transformer enclosure cost?<\/h3>\n<p>The price of the enclosure part of a complete substation is between $800 and $7000 depending on its size and materials. The cost of the enclosure for a 400-630 kVA transformer is between $1500 and $2800 and for 1,600-2,500 kVA is between $3500 and $7000. The price of stainless steel and composite is about 15-30% and 10-25% more than with standard materials. The total price of the box-type substation can vary from $7000-$20000 for a 400-1000 kVA transformer to $24000-$60000 for 1,600-2,500 kVA ones.<\/p>\n<h3>What IP rating should a box-type transformer enclosure have?<\/h3>\n<p>According to the IEC 60529 standard, the minimum IP rating for outdoor transformers is IP54 with an option of using IP55 where heavy rain, water jets, and extreme weather conditions are expected. The IP rating of a box-type transformer enclosure must be valid for doors and ventilation louvres as well.<\/p>\n<h3>How long does a box-type transformer enclosure last?<\/h3>\n<p>A good configuration of a box-type transformer enclosure can last between 25-40 years. If it is painted with standard carbon steel and marine-grade coating, it can be mounted inland; otherwise, it must be made of stainless steel or composite in coastal areas. This means that the main maintenance procedures consist of checking gaskets and doing touch-up painting every three to five years.<\/p>\n<h3>Does the enclosure affect transformer cooling?<\/h3>\n<p>Yes, the enclosure does not allow for air circulation, which can lead to the increase in temperature of the transformer. According to the IEC 62271-202 standard, the temperature rise test with the installed enclosure must be conducted to ensure compliance with the IP rating of the transformer.<\/p>\n<h3>Can a box-type enclosure be installed in a flood-prone area?<\/h3>\n<p>Yes, special solutions such as elevated bases (with the box being 500-800 mm above the ground) and IP55 sealing options can ensure that a box-type transformer enclosure can be appropriately used even in flood-prone areas.<\/p>\n<h2 id=\"references\">\u53c2\u8003\u6587\u732e<\/h2>\n<ul>\n<li><a href=\"https:\/\/webstore.iec.ch\" rel=\"nofollow noopener\" target=\"_blank\">IEC 62271-202 \u2014 High-voltage switchgear: Prefabricated transformer substations<\/a> \u2014 the governing standard for box-type transformer enclosure design, safety, and type testing.<\/li>\n<li><a href=\"https:\/\/webstore.iec.ch\" rel=\"nofollow noopener\" target=\"_blank\">IEC 60529 \u2014 IP Code<\/a> \u2014 defines IP54\/IP55 enclosure protection ratings.<\/li>\n<li><a href=\"https:\/\/iec.ch\" rel=\"nofollow noopener\" target=\"_blank\">IEC 60076 series \u2014 Power transformers<\/a> \u2014 the base standard for the transformers inside the enclosure.<\/li>\n<li><a href=\"https:\/\/webstore.iec.ch\" rel=\"nofollow noopener\" target=\"_blank\">IEC 62271-200 \u2014 MV metal-enclosed switchgear<\/a> \u2014 requirements for the switchgear compartment.<\/li>\n<li><a href=\"https:\/\/standards.ieee.org\" rel=\"nofollow noopener\" target=\"_blank\">IEEE C57.12.27 \u2014 Pad-mounted equipment enclosure integrity<\/a> \u2014 North American enclosure integrity requirements.<\/li>\n<li><a href=\"https:\/\/www.nema.org\" rel=\"nofollow noopener\" target=\"_blank\">NEMA \u2014 Distribution equipment guidance<\/a> \u2014 application guidance for enclosed distribution equipment.<\/li>\n<li><a href=\"https:\/\/subian-electric.com\/ja\/\" rel=\"nofollow\">Jiangsu Subian Electric Power \u2014 official site<\/a> \u2014 manufacturer and exporter of IEC 62271-202 box-type transformer enclosures.<\/li>\n<\/ul>\n<h2 id=\"conclusion\">\u7d50\u8ad6<\/h2>\n<p>Box-type transformer enclosures are quiet heroes of modern electricity generation &#8211; manufactured cases that enable utilities, developers and industrial owners to put together a complete substation in a matter of a few days, in constrained areas and unfavourable weather conditions while enjoying factory-grade quality. From an organisational standpoint, it is the enclosure that determines how long and how safely the unit will operate, more than the transformer inside does.<\/p>\n<p>Main ideas to remember:<\/p>\n<ul>\n<li>Choose the enclosure material and IP grade according to the environmental conditions \u2013 use stainless\/composite enclosure and IP55 for coastal and humid locations.<\/li>\n<li>Make sure that IEC 62271-202 test for the total temperature rise of the unit is performed.<\/li>\n<li>Check the enclosure for the resistance to tampering, lock and flood options if the enclosure is to be installed in public or flood-prone areas.<\/li>\n<li>Compare the estimated losses and total costs of installation, not only the price of the enclosure.<\/li>\n<li>Employ the study of known brands like Schneider, Siemens and ABB vs IEC-compliant suppliers such as Jiangsu Subian Electric Power.<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"<p>Ultimately, all electric power distribution projects face the same fundamental engineering question: where is the appropriate location for transformers? This utility found an answer in a heavy-duty steel enclosure in the parking lot corner of a crowded Philippines street. The transformer enclosure consists of a 1,000 kVA transformer, ring main unit and low-voltage panel in one weatherproof cabinet. This option replaced a planned concrete substation and protected hundreds of thousands of dollars of utility investment while reducing the construction time up to four months. The decision for a utility in favor of the box-type enclosure instead of the traditional transformer made a success of the modern compact substation. The article [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":10816,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[77],"tags":[],"class_list":["post-10815","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news"],"blocksy_meta":[],"acf":[],"_links":{"self":[{"href":"https:\/\/subian-electric.com\/ja\/wp-json\/wp\/v2\/posts\/10815","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/subian-electric.com\/ja\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/subian-electric.com\/ja\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/subian-electric.com\/ja\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/subian-electric.com\/ja\/wp-json\/wp\/v2\/comments?post=10815"}],"version-history":[{"count":2,"href":"https:\/\/subian-electric.com\/ja\/wp-json\/wp\/v2\/posts\/10815\/revisions"}],"predecessor-version":[{"id":10997,"href":"https:\/\/subian-electric.com\/ja\/wp-json\/wp\/v2\/posts\/10815\/revisions\/10997"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/subian-electric.com\/ja\/wp-json\/wp\/v2\/media\/10816"}],"wp:attachment":[{"href":"https:\/\/subian-electric.com\/ja\/wp-json\/wp\/v2\/media?parent=10815"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/subian-electric.com\/ja\/wp-json\/wp\/v2\/categories?post=10815"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/subian-electric.com\/ja\/wp-json\/wp\/v2\/tags?post=10815"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}