{"id":1631,"date":"2026-08-03T09:39:49","date_gmt":"2026-08-03T01:39:49","guid":{"rendered":"https:\/\/www.zishengelectric.com\/?post_type=product&p=1631"},"modified":"2026-08-03T09:39:49","modified_gmt":"2026-08-03T01:39:49","slug":"30kva-oil-immersed-transformer","status":"publish","type":"product","link":"https:\/\/www.zishengelectric.com\/ru\/product\/30kva-oil-immersed-transformer","title":{"rendered":"30kVA Oil Immersed Transformer"},"content":{"rendered":"

1. Product Overview<\/h2>\n

ZISHENG 30kVA Oil Immersed Transformer is a reliable and efficient distribution transformer designed for power transmission and distribution systems, industrial facilities, renewable energy projects, commercial applications, and rural electrification projects.<\/p>\n

The transformer uses high-quality insulating oil as the cooling and insulation medium, providing excellent heat dissipation performance, strong overload capability, and stable operation under continuous load conditions.<\/p>\n

With advanced manufacturing technology, optimized electromagnetic design, and strict quality control, ZISHENG 30kVA Oil Immersed Transformer delivers high efficiency, low energy loss, excellent short-circuit resistance, and long-term reliability.<\/p>\n

It is widely applied in medium and low voltage power distribution networks, especially in outdoor substations and areas requiring durable and cost-effective power solutions.<\/p>\n

\n

2. Product Specifications<\/h1>\n
\n
\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Parameter<\/th>\nSpecification<\/th>\n<\/tr>\n<\/thead>\n
Product Name<\/td>\n30kVA Oil Immersed Transformer<\/td>\n<\/tr>\n
Rated Capacity<\/td>\n30kVA<\/td>\n<\/tr>\n
Transformer Type<\/td>\nOil Immersed Distribution Transformer<\/td>\n<\/tr>\n
Phase<\/td>\nSingle Phase \/ Three Phase<\/td>\n<\/tr>\n
Frequency<\/td>\n50Hz \/ 60Hz<\/td>\n<\/tr>\n
Rated Voltage<\/td>\nCustomized<\/td>\n<\/tr>\n
High Voltage Side<\/td>\nCustomized according to requirements<\/td>\n<\/tr>\n
Low Voltage Side<\/td>\nCustomized according to requirements<\/td>\n<\/tr>\n
Cooling Method<\/td>\nONAN (Oil Natural Air Natural)<\/td>\n<\/tr>\n
Winding Material<\/td>\nCopper \/ Aluminum<\/td>\n<\/tr>\n
Insulation Medium<\/td>\nTransformer Oil<\/td>\n<\/tr>\n
Installation Type<\/td>\nOutdoor \/ Indoor<\/td>\n<\/tr>\n
Tap Changer<\/td>\nOff-circuit tap changer<\/td>\n<\/tr>\n
Enclosure<\/td>\nOutdoor weather-resistant design<\/td>\n<\/tr>\n
Standards<\/td>\nIEC \/ ANSI \/ Customer requirements<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n
\n

3. Main Structure Design<\/h1>\n

3.1 High-Efficiency Iron Core<\/h2>\n

The 30kVA Oil Immersed Transformer adopts high-quality grain-oriented silicon steel sheets with advanced core manufacturing technology.<\/p>\n

Features:<\/p>\n

    \n
  • Low no-load loss<\/li>\n
  • Reduced excitation current<\/li>\n
  • Improved energy efficiency<\/li>\n
  • Lower operating temperature<\/li>\n
  • Reduced operating noise<\/li>\n
  • Enhanced service reliability<\/li>\n<\/ul>\n

    The optimized core structure helps reduce power consumption during long-term operation.<\/p>\n

    \n

    3.2 High-Quality Windings<\/h2>\n

    The transformer windings are manufactured using high-conductivity copper or aluminum conductors.<\/p>\n

    Advantages:<\/p>\n

      \n
    • Excellent electrical conductivity<\/li>\n
    • Strong mechanical strength<\/li>\n
    • High thermal stability<\/li>\n
    • Superior short-circuit resistance<\/li>\n
    • Reliable insulation performance<\/li>\n<\/ul>\n

      The winding design ensures stable operation under different load conditions and improves transformer durability.<\/p>\n

      \n

      3.3 Transformer Oil Cooling System<\/h2>\n

      The transformer uses high-quality insulating oil for cooling and insulation.<\/p>\n

      Benefits:<\/p>\n

        \n
      • Efficient heat transfer<\/li>\n
      • Improved temperature control<\/li>\n
      • Better overload performance<\/li>\n
      • Enhanced insulation strength<\/li>\n
      • Longer equipment lifespan<\/li>\n<\/ul>\n

        The oil circulation system effectively transfers heat generated during operation and maintains stable transformer temperature.<\/p>\n

        \n

        3.4 Tank Structure<\/h2>\n

        The transformer tank is manufactured with a strong steel structure designed for outdoor operation.<\/p>\n

        Features:<\/p>\n

          \n
        • Strong mechanical strength<\/li>\n
        • Excellent sealing performance<\/li>\n
        • Protection against moisture and dust<\/li>\n
        • Suitable for harsh environments<\/li>\n
        • Long-term outdoor service capability<\/li>\n<\/ul>\n

          Radiators or cooling fins improve heat dissipation efficiency.<\/p>\n

          \n

          4. Product Advantages<\/h1>\n

          High Reliability<\/h2>\n

          ZISHENG 30kVA Oil Immersed Transformer is designed for continuous operation in power distribution networks with stable electrical performance and long service life.<\/p>\n

          Excellent Overload Capability<\/h2>\n

          The oil cooling system provides effective heat dissipation, allowing the transformer to handle temporary overload conditions while maintaining reliable operation.<\/p>\n

          Strong Short-Circuit Resistance<\/h2>\n

          The reinforced winding structure and mechanical design improve resistance against short-circuit forces and enhance operational safety.<\/p>\n

          High Energy Efficiency<\/h2>\n

          The transformer adopts low-loss materials and optimized design to reduce:<\/p>\n

            \n
          • No-load losses<\/li>\n
          • Load losses<\/li>\n
          • Operating costs<\/li>\n<\/ul>\n

            This helps customers achieve energy saving and lower lifecycle costs.<\/p>\n

            Suitable for Outdoor Environments<\/h2>\n

            The sealed oil tank structure provides excellent protection against:<\/p>\n

              \n
            • Rain<\/li>\n
            • Dust<\/li>\n
            • Humidity<\/li>\n
            • Temperature changes<\/li>\n<\/ul>\n

              It is suitable for different climatic conditions including high-temperature and high-humidity regions.<\/p>\n

              \n

              5. Technical Features<\/h1>\n

              1. Compact and Durable Design<\/h3>\n

              The transformer has a compact structure, convenient transportation, and easy installation.<\/p>\n

              2. Long Service Life<\/h3>\n

              High-quality materials and strict manufacturing processes ensure reliable operation for many years.<\/p>\n

              3. Low Maintenance Requirement<\/h3>\n

              Routine maintenance mainly includes:<\/p>\n

                \n
              • Oil level inspection<\/li>\n
              • Leakage checking<\/li>\n
              • Terminal connection inspection<\/li>\n
              • Insulation testing<\/li>\n<\/ul>\n

                4. Flexible Configuration<\/h3>\n

                Different accessories can be provided according to project requirements:<\/p>\n

                  \n
                • Oil level indicator<\/li>\n
                • Temperature indicator<\/li>\n
                • Pressure relief device<\/li>\n
                • Lightning arrester<\/li>\n
                • Buchholz relay (for larger designs)<\/li>\n
                • Protective enclosure<\/li>\n<\/ul>\n
                  \n

                  6. Application Areas<\/h1>\n

                  Power Distribution Networks<\/h2>\n
                    \n
                  • Utility distribution systems<\/li>\n
                  • Substations<\/li>\n
                  • Rural electrification projects<\/li>\n
                  • Urban power networks<\/li>\n<\/ul>\n

                    Industrial Applications<\/h2>\n
                      \n
                    • Manufacturing plants<\/li>\n
                    • Mining projects<\/li>\n
                    • Oil and gas facilities<\/li>\n
                    • Industrial parks<\/li>\n<\/ul>\n

                      Renewable Energy Projects<\/h2>\n
                        \n
                      • Solar power plants<\/li>\n
                      • Wind power systems<\/li>\n
                      • Energy storage projects<\/li>\n<\/ul>\n

                        Commercial Applications<\/h2>\n
                          \n
                        • Shopping centers<\/li>\n
                        • Office buildings<\/li>\n
                        • Residential communities<\/li>\n
                        • Infrastructure projects<\/li>\n<\/ul>\n

                          Special Environments<\/h2>\n
                            \n
                          • Remote areas<\/li>\n
                          • High-temperature regions<\/li>\n
                          • Humid tropical areas<\/li>\n
                          • Developing country power projects<\/li>\n<\/ul>\n
                            \n

                            7. Customization Options<\/h1>\n

                            ZISHENG provides customized 30kVA Oil Immersed Transformer solutions according to different project requirements.<\/p>\n

                            Available options include:<\/p>\n

                              \n
                            • Rated voltage customization<\/li>\n
                            • Frequency customization (50Hz\/60Hz)<\/li>\n
                            • Copper or aluminum winding<\/li>\n
                            • Different vector groups<\/li>\n
                            • Different impedance levels<\/li>\n
                            • Off-circuit tap changer<\/li>\n
                            • Special environmental design<\/li>\n
                            • Customized tank dimensions<\/li>\n
                            • Regional standard compliance<\/li>\n<\/ul>\n
                              \n

                              8. Manufacturing and Quality Control<\/h1>\n

                              ZISHENG follows strict quality control procedures throughout the manufacturing process.<\/p>\n

                              Production inspection includes:<\/p>\n

                                \n
                              • Raw material inspection<\/li>\n
                              • Core loss testing<\/li>\n
                              • Winding resistance testing<\/li>\n
                              • Insulation resistance testing<\/li>\n
                              • Voltage ratio testing<\/li>\n
                              • No-load loss testing<\/li>\n
                              • Load loss testing<\/li>\n
                              • Oil leakage testing<\/li>\n
                              • Dielectric strength testing<\/li>\n
                              • Final performance testing<\/li>\n<\/ul>\n

                                Each transformer is fully tested before shipment to ensure safe installation and reliable operation.<\/p>\n

                                \n

                                9. Why Choose ZISHENG 30kVA Oil Immersed Transformer<\/h1>\n
                                  \n
                                • Professional transformer manufacturer with multiple production lines<\/li>\n
                                • High-quality raw materials<\/li>\n
                                • Advanced production technology<\/li>\n
                                • Strict quality management system<\/li>\n
                                • Competitive factory-direct pricing<\/li>\n
                                • Flexible customization capability<\/li>\n
                                • Reliable delivery capacity<\/li>\n
                                • Export experience in Africa, South America, Southeast Asia, Central Asia, and Middle East markets<\/li>\n<\/ul>\n

                                  ZISHENG 30kVA Oil Immersed Transformer provides a cost-effective, reliable, and efficient solution for power distribution projects requiring stable performance and long-term operation.<\/p>\n

                                  30kVA Oil Immersed Transformer Product Q&A<\/h1>\n

                                  Q1: What is a 30kVA Oil Immersed Transformer?<\/h2>\n

                                  A:<\/strong> A 30kVA Oil Immersed Transformer is a distribution transformer with a rated capacity of 30kVA that uses transformer oil as the insulation and cooling medium.<\/p>\n

                                  It is designed to step down medium voltage electricity into low voltage power for commercial, industrial, agricultural, and infrastructure applications. The oil cooling system provides excellent heat dissipation, stable operation, and strong overload capability, making it suitable for outdoor power distribution networks.<\/p>\n

                                  \n

                                  Q2: What are the main advantages of a 30kVA Oil Immersed Transformer?<\/h2>\n

                                  A:<\/strong> The main advantages include:<\/p>\n

                                    \n
                                  • High reliability for continuous operation<\/li>\n
                                  • Excellent cooling performance<\/li>\n
                                  • Strong overload capacity<\/li>\n
                                  • Superior short-circuit resistance<\/li>\n
                                  • Low energy loss<\/li>\n
                                  • High efficiency<\/li>\n
                                  • Long service life<\/li>\n
                                  • Outdoor weather resistance<\/li>\n
                                  • Cost-effective power distribution solution<\/li>\n
                                  • Suitable for harsh environmental conditions<\/li>\n<\/ul>\n
                                    \n

                                    Q3: What is the difference between a 30kVA Oil Immersed Transformer and a Dry Type Transformer?<\/h2>\n

                                    A:<\/strong> The main differences are:<\/p>\n

                                    \n
                                    \n\n\n\n\n\n\n\n\n\n\n\n
                                    Item<\/th>\nOil Immersed Transformer<\/th>\nDry Type Transformer<\/th>\n<\/tr>\n<\/thead>\n
                                    Cooling Method<\/td>\nTransformer oil cooling<\/td>\nAir cooling<\/td>\n<\/tr>\n
                                    Insulation Medium<\/td>\nInsulating oil<\/td>\nSolid insulation materials<\/td>\n<\/tr>\n
                                    Installation<\/td>\nMainly outdoor applications<\/td>\nMainly indoor applications<\/td>\n<\/tr>\n
                                    Heat Dissipation<\/td>\nExcellent<\/td>\nGood<\/td>\n<\/tr>\n
                                    Maintenance<\/td>\nRequires oil inspection<\/td>\nLower maintenance<\/td>\n<\/tr>\n
                                    Fire Safety<\/td>\nRequires oil fire protection measures<\/td>\nHigher fire resistance<\/td>\n<\/tr>\n
                                    Application<\/td>\nUtility networks, outdoor substations<\/td>\nBuildings, data centers, indoor facilities<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

                                    Oil immersed transformers are widely used where high capacity reliability, outdoor installation, and strong cooling performance are required.<\/p>\n

                                    \n

                                    Q4: What voltage ratings are available for a 30kVA Oil Immersed Transformer?<\/h2>\n

                                    A:<\/strong> ZISHENG can customize voltage ratings according to different power systems and project requirements.<\/p>\n

                                    Common voltage configurations include:<\/p>\n

                                      \n
                                    • High voltage side: 6kV, 10kV, 11kV, 13.8kV, 15kV, 20kV, 35kV<\/li>\n
                                    • Low voltage side: 400V, 415V, 480V, 690V<\/li>\n<\/ul>\n

                                      Customized voltage ratios are available for different countries and regional standards.<\/p>\n

                                      \n

                                      Q5: Is the 30kVA Oil Immersed Transformer available with copper winding?<\/h2>\n

                                      A:<\/strong> Yes. ZISHENG provides both copper winding and aluminum winding options.<\/p>\n

                                      Copper winding advantages:<\/p>\n

                                        \n
                                      • Higher electrical conductivity<\/li>\n
                                      • Lower power loss<\/li>\n
                                      • Better thermal performance<\/li>\n
                                      • Stronger mechanical strength<\/li>\n
                                      • Longer service life<\/li>\n<\/ul>\n

                                        Customers can select the winding material according to project requirements, efficiency targets, and budget considerations.<\/p>\n

                                        \n

                                        Q6: Can the 30kVA Oil Immersed Transformer be customized?<\/h2>\n

                                        A:<\/strong> Yes. ZISHENG provides customized transformer solutions, including:<\/p>\n

                                          \n
                                        • Voltage ratio customization<\/li>\n
                                        • Frequency selection (50Hz\/60Hz)<\/li>\n
                                        • Copper or aluminum winding<\/li>\n
                                        • Different impedance requirements<\/li>\n
                                        • Vector group customization<\/li>\n
                                        • Tap changer configuration<\/li>\n
                                        • Tank design customization<\/li>\n
                                        • Special environmental protection design<\/li>\n
                                        • Different installation requirements<\/li>\n<\/ul>\n

                                          Customized solutions help ensure the transformer matches specific project conditions.<\/p>\n

                                          \n

                                          Q7: Where can a 30kVA Oil Immersed Transformer be used?<\/h2>\n

                                          A:<\/strong> The transformer is widely used in:<\/p>\n

                                            \n
                                          • Power distribution networks<\/li>\n
                                          • Outdoor substations<\/li>\n
                                          • Industrial factories<\/li>\n
                                          • Mining projects<\/li>\n
                                          • Solar power plants<\/li>\n
                                          • Energy storage projects<\/li>\n
                                          • Agricultural electrification<\/li>\n
                                          • Commercial facilities<\/li>\n
                                          • Infrastructure construction projects<\/li>\n
                                          • Remote area power supply systems<\/li>\n<\/ul>\n
                                            \n

                                            Q8: Does a 30kVA Oil Immersed Transformer require regular maintenance?<\/h2>\n

                                            A:<\/strong> Yes. Regular maintenance helps ensure safe and reliable operation.<\/p>\n

                                            Common maintenance items include:<\/p>\n

                                              \n
                                            • Checking oil level<\/li>\n
                                            • Inspecting oil leakage<\/li>\n
                                            • Checking transformer terminals<\/li>\n
                                            • Testing insulation performance<\/li>\n
                                            • Inspecting protective devices<\/li>\n
                                            • Cleaning external surfaces<\/li>\n<\/ul>\n

                                              Proper maintenance can extend transformer service life and improve operational reliability.<\/p>\n

                                              \n

                                              Q9: What type of transformer oil is used in a 30kVA Oil Immersed Transformer?<\/h2>\n

                                              A:<\/strong> ZISHENG transformers use high-quality insulating oil that provides:<\/p>\n

                                                \n
                                              • Excellent insulation performance<\/li>\n
                                              • Efficient heat transfer<\/li>\n
                                              • Stable chemical properties<\/li>\n
                                              • Reliable cooling performance<\/li>\n<\/ul>\n

                                                Oil selection can be customized according to customer requirements and regional standards.<\/p>\n

                                                \n

                                                Q10: How does ZISHENG ensure the quality of 30kVA Oil Immersed Transformers?<\/h2>\n

                                                A:<\/strong> ZISHENG applies strict quality control throughout the manufacturing process.<\/p>\n

                                                Quality inspection includes:<\/p>\n

                                                  \n
                                                • Raw material inspection<\/li>\n
                                                • Silicon steel core testing<\/li>\n
                                                • Winding resistance testing<\/li>\n
                                                • Insulation testing<\/li>\n
                                                • Voltage ratio testing<\/li>\n
                                                • No-load loss testing<\/li>\n
                                                • Load loss testing<\/li>\n
                                                • Oil leakage inspection<\/li>\n
                                                • Pressure testing<\/li>\n
                                                • Final performance testing<\/li>\n<\/ul>\n

                                                  Each transformer is tested before delivery to ensure reliable operation at the customer’s project site.<\/p>\n

                                                  \n

                                                  Q11: Can the 30kVA Oil Immersed Transformer operate in harsh environments?<\/h2>\n

                                                  A:<\/strong> Yes. The transformer can be designed for different environmental conditions, including:<\/p>\n

                                                    \n
                                                  • High-temperature areas<\/li>\n
                                                  • High-humidity regions<\/li>\n
                                                  • Tropical climates<\/li>\n
                                                  • Dusty industrial environments<\/li>\n
                                                  • Outdoor installations<\/li>\n<\/ul>\n

                                                    The sealed tank structure and durable materials help ensure stable operation under demanding conditions.<\/p>\n

                                                    \n

                                                    Q12: What standards does the 30kVA Oil Immersed Transformer comply with?<\/h2>\n

                                                    A:<\/strong> ZISHENG transformers can be manufactured according to international and regional standards, including:<\/p>\n

                                                      \n
                                                    • IEC standards<\/li>\n
                                                    • ANSI standards<\/li>\n
                                                    • Customer technical specifications<\/li>\n
                                                    • Local power system requirements<\/li>\n<\/ul>\n

                                                      The exact standard can be selected according to the destination market and project requirements.<\/p>\n

                                                      \n

                                                      Q13: What is the service life of a 30kVA Oil Immersed Transformer?<\/h2>\n

                                                      A:<\/strong> A high-quality oil immersed transformer can provide decades of reliable service when properly installed and maintained.<\/p>\n

                                                      The actual service life depends on:<\/p>\n

                                                        \n
                                                      • Operating load<\/li>\n
                                                      • Installation environment<\/li>\n
                                                      • Maintenance frequency<\/li>\n
                                                      • Insulation condition<\/li>\n
                                                      • Operating temperature<\/li>\n<\/ul>\n

                                                        ZISHENG uses reliable materials and advanced manufacturing processes to ensure long-term stable performance.<\/p>\n

                                                        \n

                                                        Q14: Why choose ZISHENG 30kVA Oil Immersed Transformer?<\/h2>\n

                                                        A:<\/strong> ZISHENG provides:<\/p>\n

                                                          \n
                                                        • Professional transformer manufacturing capability<\/li>\n
                                                        • Multiple production lines<\/li>\n
                                                        • Strict quality control system<\/li>\n
                                                        • Competitive factory-direct pricing<\/li>\n
                                                        • Customized engineering solutions<\/li>\n
                                                        • Stable production capacity<\/li>\n
                                                        • International export experience<\/li>\n<\/ul>\n

                                                          ZISHENG 30kVA Oil Immersed Transformer delivers a reliable and economical power distribution solution for utility, industrial, renewable energy, and infrastructure projects worldwide.<\/p>","protected":false},"excerpt":{"rendered":"

                                                          30kVA Oil Immersed Transformer, produced by a reputable manufacturer and supplier in China, represents the pinnacle of electrical engineering excellence. These transformers are engineered with precision and cutting-edge technology to provide robust, efficient, and long-lasting power solutions.<\/p>","protected":false},"featured_media":1632,"template":"","meta":{"themepark_post_bcolor":"#f5f5f5","themepark_post_width":"1022px","themepark_post_img":"","themepark_post_img_po":"left","themepark_post_img_re":false,"themepark_post_img_cover":false,"themepark_post_img_fixed":false,"themepark_post_hide_title":false,"themepark_post_main_b":"","themepark_post_main_p":100,"themepark_paddingblock":false},"product_brand":[],"product_cat":[71],"product_tag":[],"class_list":["post-1631","product","type-product","status-publish","has-post-thumbnail","product_cat-oil-immersed-transformer","first","instock","shipping-taxable","product-type-simple"],"_links":{"self":[{"href":"https:\/\/www.zishengelectric.com\/ru\/wp-json\/wp\/v2\/product\/1631","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.zishengelectric.com\/ru\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/www.zishengelectric.com\/ru\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.zishengelectric.com\/ru\/wp-json\/wp\/v2\/media\/1632"}],"wp:attachment":[{"href":"https:\/\/www.zishengelectric.com\/ru\/wp-json\/wp\/v2\/media?parent=1631"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/www.zishengelectric.com\/ru\/wp-json\/wp\/v2\/product_brand?post=1631"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/www.zishengelectric.com\/ru\/wp-json\/wp\/v2\/product_cat?post=1631"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/www.zishengelectric.com\/ru\/wp-json\/wp\/v2\/product_tag?post=1631"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}