{"id":2864,"date":"2026-10-24T14:29:27","date_gmt":"2026-10-24T06:29:27","guid":{"rendered":"https:\/\/shenhengglobal.com\/?post_type=product&p=2864"},"modified":"2026-10-24T14:29:28","modified_gmt":"2026-10-24T06:29:28","slug":"factory-direct-supply-high-quality-sz22-three-phase-oil-immersed-on-load-tap-changing-transformer","status":"publish","type":"product","link":"https:\/\/shenhengglobal.com\/vi\/product\/factory-direct-supply-high-quality-sz22-three-phase-oil-immersed-on-load-tap-changing-transformer\/","title":{"rendered":"Factory Direct Supply High Quality SZ22 Three-Phase Oil-Immersed On-Load Tap Changing Transformer"},"content":{"rendered":"

Product Overview & Application<\/h2>\n

The SZ22 is a three-phase, double-winding oil-immersed power transformer with on-load voltage regulation. The \u201cS\u201d denotes three-phase, \u201cZ\u201d indicates on-load tap changing, and \u201c22\u201d represents the high-efficiency performance level. It is widely used in power plants, substations, large industrial and mining enterprises, and petrochemical facilities for stepping up or stepping down voltage in transmission and distribution systems. The on-load tap changer allows voltage adjustment without interrupting the power supply, which is critical for maintaining stable output under varying load conditions.<\/p>\n

Key Features & Structural Design<\/h2>\n

1.High Energy Efficiency: The SZ22 performance level corresponds to low-loss design. By utilizing high-permeability silicon steel cores and optimized winding structures, it significantly reduces no-load and load losses, helping users meet strict energy efficiency standards and reduce long-term operating costs.<\/p>\n

2.Robust Oil-Immersed Construction: The transformer uses high-grade insulating oil for both insulation and cooling. The tank is typically constructed with corrugated steel plates to increase heat dissipation area. The fully sealed design prevents moisture and dust ingress, ensuring reliable outdoor operation in harsh environments.<\/p>\n

3.Flexible Cooling Options: Standard cooling is ONAN (Oil Natural Air Natural), with ONAF (Oil Natural Air Forced) available for higher capacity models to handle increased thermal load<\/p>\n

\"\"<\/p>","protected":false},"excerpt":{"rendered":"

The SZ22 series is a high-efficiency, three-phase oil-immersed power transformer equipped with an on-load tap changer. Designed for 35kV and 110kV voltage levels, it enables uninterrupted voltage regulation under load conditions, ensuring stable power supply despite grid fluctuations. Featuring low-loss silicon steel cores and a robust sealed tank, it meets high energy efficiency standards, making it ideal for power plants, substations, and industrial distribution networks.<\/p>","protected":false},"featured_media":2865,"comment_status":"open","ping_status":"closed","template":"","meta":{"_acf_changed":false,"_gspb_post_css":""},"product_brand":[],"product_cat":[35,71,70],"product_tag":[],"class_list":["post-2864","product","type-product","status-publish","has-post-thumbnail","product_cat-products","product_cat-oil-immersed-transformer","product_cat-power-transformer","first","instock","shipping-taxable","product-type-simple"],"acf":[],"_links":{"self":[{"href":"https:\/\/shenhengglobal.com\/vi\/wp-json\/wp\/v2\/product\/2864","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/shenhengglobal.com\/vi\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/shenhengglobal.com\/vi\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/shenhengglobal.com\/vi\/wp-json\/wp\/v2\/comments?post=2864"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/shenhengglobal.com\/vi\/wp-json\/wp\/v2\/media\/2865"}],"wp:attachment":[{"href":"https:\/\/shenhengglobal.com\/vi\/wp-json\/wp\/v2\/media?parent=2864"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/shenhengglobal.com\/vi\/wp-json\/wp\/v2\/product_brand?post=2864"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/shenhengglobal.com\/vi\/wp-json\/wp\/v2\/product_cat?post=2864"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/shenhengglobal.com\/vi\/wp-json\/wp\/v2\/product_tag?post=2864"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}