{"id":3556,"date":"2026-06-01T16:27:13","date_gmt":"2026-06-01T08:27:13","guid":{"rendered":"https:\/\/www.wolunelectric.com\/?post_type=product&p=3556"},"modified":"2026-06-01T16:27:13","modified_gmt":"2026-06-01T08:27:13","slug":"20kv-3150a-porcelain-wall-bushing","status":"publish","type":"product","link":"https:\/\/www.wolunelectric.com\/ar\/product\/20kv-3150a-porcelain-wall-bushing\/","title":{"rendered":"20kV 3150A Porcelain Wall Bushing"},"content":{"rendered":"

High-Current Indoor & Outdoor Power Distribution Bushing<\/h2>\n

The 20kV 3150A Porcelain Wall Bushing is designed to provide safe and reliable insulation and current transmission through walls, partitions, and electrical enclosures in medium-voltage power systems. Manufactured with high-strength glazed porcelain and high-conductivity copper or aluminum conductors, the bushing ensures excellent electrical performance, mechanical strength, and long service life under demanding operating conditions.<\/p>\n

Widely used in substations, switchgear, transformer stations, and industrial power distribution systems, the wall bushing enables secure conductor passage while maintaining insulation integrity between different compartments.<\/p>\n

\n

\u0645\u064a\u0632\u0627\u062a \u0627\u0644\u0645\u0646\u062a\u062c<\/h2>\n

High Current Carrying Capacity<\/h3>\n

Rated current up to 3150A for heavy-duty power transmission applications.<\/p>\n

Premium Porcelain Insulator<\/h3>\n

Manufactured from high-quality electrical porcelain with excellent dielectric and mechanical properties.<\/p>\n

Superior Insulation Performance<\/h3>\n

Provides reliable insulation for 20kV medium-voltage systems.<\/p>\n

Corrosion-Resistant Hardware<\/h3>\n

Galvanized steel and copper alloy fittings ensure long-term outdoor durability.<\/p>\n

High Mechanical Strength<\/h3>\n

Designed to withstand conductor tension, vibration, and installation stresses.<\/p>\n

Long Service Life<\/h3>\n

Weather-resistant glazed surface minimizes contamination accumulation and maintenance requirements.<\/p>\n

\u0633\u0647\u0648\u0644\u0629 \u0627\u0644\u062a\u0631\u0643\u064a\u0628<\/h3>\n

Standard mounting flange design simplifies installation in substations and switchgear rooms.<\/p>\n

\n

\u0627\u0644\u0645\u0648\u0627\u0635\u0641\u0627\u062a \u0627\u0644\u0641\u0646\u064a\u0629<\/h2>\n
\n
\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
\u0627\u0644\u0628\u0646\u062f<\/th>\n\u0627\u0644\u0645\u0648\u0627\u0635\u0641\u0627\u062a<\/th>\n<\/tr>\n<\/thead>\n
Product Type<\/td>\nPorcelain Wall Bushing<\/td>\n<\/tr>\n
\u0627\u0644\u0641\u0648\u0644\u062a\u064a\u0629 \u0627\u0644\u0645\u0642\u062f\u0631\u0629<\/td>\n20kV<\/td>\n<\/tr>\n
Highest System Voltage<\/td>\n24 \u0643\u064a\u0644\u0648 \u0641\u0648\u0644\u062a<\/td>\n<\/tr>\n
\u0627\u0644\u062a\u064a\u0627\u0631 \u0627\u0644\u0645\u0642\u0646\u0646<\/td>\n3150A<\/td>\n<\/tr>\n
Power Frequency Withstand Voltage (Dry)<\/td>\n65kV<\/td>\n<\/tr>\n
Lightning Impulse Withstand Voltage<\/td>\n125kV<\/td>\n<\/tr>\n
Insulation Material<\/td>\nElectrical Porcelain<\/td>\n<\/tr>\n
Conductor Material<\/td>\nCopper \/ Aluminum<\/td>\n<\/tr>\n
Creepage Distance<\/td>\n\u2265 560 mm<\/td>\n<\/tr>\n
Installation<\/td>\nHorizontal<\/td>\n<\/tr>\n
\u0627\u0644\u062a\u0637\u0628\u064a\u0642<\/td>\nIndoor \/ Outdoor<\/td>\n<\/tr>\n
Ambient Temperature<\/td>\n-40\u00b0C to +40\u00b0C<\/td>\n<\/tr>\n
Standard<\/td>\nIEC 60137<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

Specifications can be customized according to project requirements.<\/em><\/p>\n

\n

\u0627\u0644\u062a\u0637\u0628\u064a\u0642\u0627\u062a<\/h2>\n
    \n
  • Medium-voltage substations<\/li>\n
  • Power transformer stations<\/li>\n
  • Ring main units (RMU)<\/li>\n
  • Metal-clad switchgear<\/li>\n
  • Industrial distribution systems<\/li>\n
  • Renewable energy substations<\/li>\n
  • Utility transmission and distribution projects<\/li>\n<\/ul>\n
    \n

    Construction<\/h2>\n

    The wall bushing consists of:<\/p>\n

      \n
    • High-strength glazed porcelain insulator<\/li>\n
    • Copper or aluminum conductor rod<\/li>\n
    • Mounting flange assembly<\/li>\n
    • Galvanized fastening hardware<\/li>\n
    • Sealing components for moisture protection<\/li>\n<\/ul>\n

      The design ensures reliable electrical insulation while safely passing conductors through walls or barriers.<\/p>\n

      \n

      Advantages of Porcelain Wall Bushings<\/h2>\n

      Excellent Insulation Performance<\/h3>\n

      Porcelain provides stable dielectric properties over decades of service.<\/p>\n

      High Mechanical Reliability<\/h3>\n

      Superior resistance to compression, bending, and environmental stress.<\/p>\n

      UV and Weather Resistant<\/h3>\n

      Suitable for long-term outdoor installations.<\/p>\n

      Cost-Effective Solution<\/h3>\n

      Lower lifecycle cost with proven field performance.<\/p>\n

      \n

      Quality Control<\/h2>\n

      Each wall bushing undergoes:<\/p>\n

        \n
      • Power frequency withstand voltage test<\/li>\n
      • Partial discharge inspection<\/li>\n
      • Dimensional verification<\/li>\n
      • Mechanical strength test<\/li>\n
      • Visual glazing inspection<\/li>\n
      • Routine factory testing according to IEC standards<\/li>\n<\/ul>\n
        \n

        Why Choose Wolun Electric?<\/h2>\n
          \n
        • Professional manufacturer of medium and high-voltage insulation products<\/li>\n
        • OEM & ODM service available<\/li>\n
        • Strict IEC quality control<\/li>\n
        • Competitive factory-direct pricing<\/li>\n
        • Fast delivery worldwide<\/li>\n
        • Technical support for utility and EPC projects<\/li>\n<\/ul>\n
          \n

          FAQ<\/h2>\n

          What is a wall bushing used for?<\/h3>\n

          A wall bushing allows conductors to safely pass through walls, barriers, or enclosures while maintaining electrical insulation.<\/p>\n

          Can the bushing be used outdoors?<\/h3>\n

          Yes. The glazed porcelain housing is suitable for both indoor and outdoor applications.<\/p>\n

          Is customization available?<\/h3>\n

          Yes. Current rating, creepage distance, mounting dimensions, and conductor material can be customized.<\/p>\n

          What standards does it comply with?<\/h3>\n

          The product is manufactured according to IEC 60137 and relevant utility specifications.<\/p>","protected":false},"excerpt":{"rendered":"

          The 20kV 3150A Porcelain Wall Bushing is a high-performance insulation component designed for medium-voltage power systems.<\/p>\n

          Featuring durable glazed porcelain construction and high-current copper conductors, it provides reliable electrical insulation and safe conductor passage through walls, switchgear, and substation structures.<\/p>\n

          Ideal for indoor and outdoor applications up to 24kV.<\/p>","protected":false},"featured_media":3559,"template":"","meta":{"_seopress_robots_primary_cat":"none","_seopress_titles_title":"20kV 3150A Porcelain Wall Bushing | Medium Voltage Porcelain Bushing Manufacturer","_seopress_titles_desc":"20kV 3150A porcelain wall bushing for substations, switchgear, and transformer installations. High-strength porcelain insulation, IEC compliant, factory-direct supply from China.","_seopress_robots_index":""},"product_brand":[],"product_cat":[81],"product_tag":[],"class_list":{"0":"post-3556","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-wall-bushing","8":"first","9":"instock","10":"shipping-taxable","11":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/www.wolunelectric.com\/ar\/wp-json\/wp\/v2\/product\/3556","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.wolunelectric.com\/ar\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/www.wolunelectric.com\/ar\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.wolunelectric.com\/ar\/wp-json\/wp\/v2\/media\/3559"}],"wp:attachment":[{"href":"https:\/\/www.wolunelectric.com\/ar\/wp-json\/wp\/v2\/media?parent=3556"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/www.wolunelectric.com\/ar\/wp-json\/wp\/v2\/product_brand?post=3556"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/www.wolunelectric.com\/ar\/wp-json\/wp\/v2\/product_cat?post=3556"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/www.wolunelectric.com\/ar\/wp-json\/wp\/v2\/product_tag?post=3556"}],"curies":[{"name":"\u062f\u0628\u0644\u064a\u0648 \u0628\u064a","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}