{"id":2043,"date":"2026-09-16T14:03:54","date_gmt":"2026-09-16T06:03:54","guid":{"rendered":"https:\/\/www.zishengelectric.com\/?post_type=product&p=2043"},"modified":"2026-09-16T14:03:54","modified_gmt":"2026-09-16T06:03:54","slug":"1500kva-oil-immersed-transformer","status":"publish","type":"product","link":"https:\/\/www.zishengelectric.com\/fr\/product\/1500kva-oil-immersed-transformer","title":{"rendered":"1500kVA Oil Immersed Transformer"},"content":{"rendered":"

The 1500kVA oil-immersed transformer is a three-phase distribution transformer designed to convert medium-voltage power into stable, usable voltage for industrial facilities, utility networks, renewable energy projects, commercial buildings and infrastructure systems.<\/p>\n

The transformer uses high-quality silicon steel cores, copper or aluminum windings, transformer-grade insulating oil and a sealed corrugated tank. It can be customized according to the project voltage, frequency, vector group, impedance, installation environment and applicable IEC or IEEE standards.<\/p>\n

Main Technical Specifications<\/h2>\n
\n
\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Parameter<\/th>\nStandard Configuration \/ Available Options<\/th>\n<\/tr>\n<\/thead>\n
Rated Capacity<\/td>\n1500kVA \/ 1.5MVA<\/td>\n<\/tr>\n
Transformer Type<\/td>\nOil-immersed distribution transformer<\/td>\n<\/tr>\n
Phase<\/td>\nThree phase<\/td>\n<\/tr>\n
High Voltage<\/td>\n6kV, 10kV, 11kV, 13.8kV, 20kV, 22kV, 33kV or customized<\/td>\n<\/tr>\n
Low Voltage<\/td>\n400V, 415V, 440V, 480V, 690V or customized<\/td>\n<\/tr>\n
Frequency<\/td>\n50Hz or 60Hz<\/td>\n<\/tr>\n
Cooling Method<\/td>\nONAN; ONAF available when required<\/td>\n<\/tr>\n
Winding Material<\/td>\nCopper or aluminum<\/td>\n<\/tr>\n
Vector Group<\/td>\nDyn11, Dyn5, Yyn0, YNd1 or customized<\/td>\n<\/tr>\n
Tap Changer<\/td>\nOff-circuit tap changer or OLTC<\/td>\n<\/tr>\n
Typical Tapping Range<\/td>\n\u00b12 \u00d7 2.5%, \u00b15% or customized<\/td>\n<\/tr>\n
Short-Circuit Impedance<\/td>\nTypically 4.5%\u20136.5%, subject to project requirements<\/td>\n<\/tr>\n
Insulation Medium<\/td>\nMineral insulating oil or natural\/synthetic ester fluid<\/td>\n<\/tr>\n
Core Material<\/td>\nCold-rolled grain-oriented silicon steel<\/td>\n<\/tr>\n
Temperature Rise<\/td>\nAccording to IEC\/IEEE standard and project conditions<\/td>\n<\/tr>\n
Ambient Temperature<\/td>\nTypically \u221225\u00b0C to +40\u00b0C; high-temperature design available<\/td>\n<\/tr>\n
Installation<\/td>\nOutdoor or indoor<\/td>\n<\/tr>\n
Altitude<\/td>\nUp to 1,000m as standard; high-altitude design available<\/td>\n<\/tr>\n
Tank Construction<\/td>\nHermetically sealed corrugated tank or conservator type<\/td>\n<\/tr>\n
Protection Level<\/td>\nCustomized according to installation conditions<\/td>\n<\/tr>\n
Standards<\/td>\nIEC 60076, IEEE C57, ANSI, GB or project-specific standards<\/td>\n<\/tr>\n
Service Life<\/td>\nDesigned for 25\u201330 years under proper operating conditions<\/td>\n<\/tr>\n
Warranty<\/td>\nAccording to the agreed technical and commercial contract<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

Final parameters are subject to the approved technical specification and transformer drawings.<\/em><\/p>\n

Typical Voltage Configurations<\/h2>\n

The 1500kVA transformer can be engineered for different electrical systems, including:<\/p>\n

    \n
  • 10kV\/0.4kV<\/li>\n
  • 11kV\/0.415kV<\/li>\n
  • 11kV\/0.433kV<\/li>\n
  • 13.8kV\/0.480kV<\/li>\n
  • 20kV\/0.4kV<\/li>\n
  • 22kV\/0.415kV<\/li>\n
  • 33kV\/0.415kV<\/li>\n
  • 33kV\/0.480kV<\/li>\n
  • Other customized voltage ratios<\/li>\n<\/ul>\n

    Key Product Features<\/h2>\n

    High-Efficiency Magnetic Core<\/h3>\n

    The transformer core is manufactured from high-permeability, cold-rolled grain-oriented silicon steel. Step-lap core construction can be used to reduce no-load loss, magnetizing current, vibration and operating noise.<\/p>\n

    Reliable Winding Structure<\/h3>\n

    Copper or aluminum conductors are selected according to the required performance and project budget. The windings are mechanically reinforced to withstand short-circuit forces, voltage fluctuations and continuous industrial loading.<\/p>\n

    Effective Cooling System<\/h3>\n

    The insulating oil transfers heat from the core and windings to the corrugated tank or radiator surfaces. ONAN cooling provides reliable heat dissipation without external cooling equipment. ONAF cooling can be supplied for special loading requirements.<\/p>\n

    Sealed Transformer Tank<\/h3>\n

    A hermetically sealed tank prevents direct contact between transformer oil and outside air. This helps reduce moisture ingress, oil oxidation and routine maintenance requirements.<\/p>\n

    A conservator-type structure can also be supplied when required by the project specification.<\/p>\n

    Low Loss and Stable Operation<\/h3>\n

    The core, windings and insulation system are optimized to provide:<\/p>\n

      \n
    • Low no-load loss<\/li>\n
    • Controlled load loss<\/li>\n
    • Stable output voltage<\/li>\n
    • Reduced operating temperature<\/li>\n
    • Lower lifetime energy costs<\/li>\n
    • Reliable continuous operation<\/li>\n<\/ul>\n

      Strong Environmental Adaptability<\/h3>\n

      The transformer can be customized for demanding environments such as:<\/p>\n

        \n
      • High ambient temperature<\/li>\n
      • High altitude<\/li>\n
      • Coastal salt-fog conditions<\/li>\n
      • Desert and dusty locations<\/li>\n
      • High-humidity regions<\/li>\n
      • Mining and heavy industrial sites<\/li>\n
      • Solar and wind power projects<\/li>\n<\/ul>\n

        Main Components<\/h2>\n

        A typical 1500kVA oil-immersed transformer includes:<\/p>\n

          \n
        • Magnetic core<\/li>\n
        • High-voltage winding<\/li>\n
        • Low-voltage winding<\/li>\n
        • Insulating oil<\/li>\n
        • Corrugated or radiator-type tank<\/li>\n
        • High-voltage bushings<\/li>\n
        • Low-voltage bushings<\/li>\n
        • Off-circuit tap changer<\/li>\n
        • Oil filling and drain valves<\/li>\n
        • Earthing terminals<\/li>\n
        • Lifting lugs<\/li>\n
        • Jacking pads<\/li>\n
        • Rating plate<\/li>\n
        • Oil level indicator, where applicable<\/li>\n
        • Pressure-relief device<\/li>\n
        • Thermometer pocket<\/li>\n
        • Bi-directional rollers or skid base<\/li>\n<\/ul>\n

          Optional Accessories<\/h2>\n

          The following protection, monitoring and connection accessories are available:<\/p>\n

            \n
          • Buchholz relay<\/li>\n
          • Oil temperature indicator<\/li>\n
          • Winding temperature indicator<\/li>\n
          • Pressure-relief device<\/li>\n
          • Magnetic oil level gauge<\/li>\n
          • Sudden-pressure relay<\/li>\n
          • Pressure vacuum gauge<\/li>\n
          • Marshalling box<\/li>\n
          • Cooling fans<\/li>\n
          • Online temperature monitoring system<\/li>\n
          • Oil leakage monitoring<\/li>\n
          • Current transformers<\/li>\n
          • Neutral current transformer<\/li>\n
          • Cable boxes<\/li>\n
          • Plug-in bushings<\/li>\n
          • Surge arresters<\/li>\n
          • HV and LV terminal enclosures<\/li>\n
          • Remote alarm contacts<\/li>\n
          • Stainless-steel hardware<\/li>\n
          • Anti-condensation heater<\/li>\n
          • OLTC control panel<\/li>\n<\/ul>\n

            Customization Options<\/h2>\n

            Every 1500kVA transformer can be engineered around the actual project conditions.<\/p>\n

            \n
            \n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
            Customization Item<\/th>\nAvailable Options<\/th>\n<\/tr>\n<\/thead>\n
            Voltage Ratio<\/td>\nCustomized primary and secondary voltage<\/td>\n<\/tr>\n
            Frequency<\/td>\n50Hz or 60Hz<\/td>\n<\/tr>\n
            Conductor<\/td>\nCopper or aluminum<\/td>\n<\/tr>\n
            Vector Group<\/td>\nAccording to system configuration<\/td>\n<\/tr>\n
            Tap Regulation<\/td>\nOff-circuit or on-load tap changer<\/td>\n<\/tr>\n
            Insulating Fluid<\/td>\nMineral oil, natural ester or synthetic ester<\/td>\n<\/tr>\n
            Tank Design<\/td>\nSealed corrugated tank or conservator type<\/td>\n<\/tr>\n
            Cooling<\/td>\nONAN or ONAF<\/td>\n<\/tr>\n
            Efficiency Level<\/td>\nAccording to local regulations and tender requirements<\/td>\n<\/tr>\n
            Paint System<\/td>\nC3, C4 or C5 corrosion protection<\/td>\n<\/tr>\n
            Enclosure<\/td>\nOpen terminals, cable box or protected terminal chamber<\/td>\n<\/tr>\n
            Noise Level<\/td>\nStandard or low-noise design<\/td>\n<\/tr>\n
            Altitude<\/td>\nStandard or high-altitude application<\/td>\n<\/tr>\n
            Ambient Conditions<\/td>\nTropical, desert, coastal or cold-climate design<\/td>\n<\/tr>\n
            Monitoring<\/td>\nLocal instruments or remote digital monitoring<\/td>\n<\/tr>\n
            Standards<\/td>\nIEC, IEEE\/ANSI, GB or customer-specified standard<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

            Manufacturing Process<\/h2>\n
              \n
            1. Technical requirement review<\/li>\n
            2. Electrical and mechanical design<\/li>\n
            3. Customer drawing confirmation<\/li>\n
            4. Core cutting and stacking<\/li>\n
            5. HV and LV winding production<\/li>\n
            6. Active-part assembly<\/li>\n
            7. Drying and vacuum treatment<\/li>\n
            8. Tank fabrication and surface treatment<\/li>\n
            9. Vacuum oil filling<\/li>\n
            10. Routine testing and inspection<\/li>\n
            11. Packing and shipment preparation<\/li>\n<\/ol>\n

              Routine Factory Tests<\/h2>\n

              Each transformer is tested before delivery. Routine tests can include:<\/p>\n

                \n
              • Winding resistance measurement<\/li>\n
              • Voltage-ratio measurement<\/li>\n
              • Phase displacement and vector-group verification<\/li>\n
              • Short-circuit impedance measurement<\/li>\n
              • Load-loss measurement<\/li>\n
              • No-load loss and no-load current measurement<\/li>\n
              • Insulation resistance measurement<\/li>\n
              • Applied voltage withstand test<\/li>\n
              • Induced overvoltage withstand test<\/li>\n
              • Transformer oil testing<\/li>\n
              • Functional inspection of accessories<\/li>\n
              • Tank sealing and oil-leakage inspection<\/li>\n
              • Paint-thickness and appearance inspection<\/li>\n<\/ul>\n

                Optional Type and Special Tests<\/h2>\n

                When required by the customer or project specification, additional tests can be arranged:<\/p>\n

                  \n
                • Temperature-rise test<\/li>\n
                • Lightning impulse test<\/li>\n
                • Sound-level measurement<\/li>\n
                • Partial-discharge test<\/li>\n
                • Zero-sequence impedance measurement<\/li>\n
                • Harmonic measurement<\/li>\n
                • Short-circuit withstand test<\/li>\n
                • Oil dissolved-gas analysis<\/li>\n
                • Capacitance and dissipation-factor measurement<\/li>\n
                • FRA test<\/li>\n
                • Witnessed Factory Acceptance Test<\/li>\n
                • Independent third-party inspection<\/li>\n<\/ul>\n

                  Product Applications<\/h2>\n

                  The 1500kVA oil-immersed transformer is suitable for:<\/p>\n

                    \n
                  • Utility distribution networks<\/li>\n
                  • Industrial factories<\/li>\n
                  • Mining operations<\/li>\n
                  • Cement and steel plants<\/li>\n
                  • Oil and gas facilities<\/li>\n
                  • Water-treatment plants<\/li>\n
                  • Commercial buildings<\/li>\n
                  • Hospitals and airports<\/li>\n
                  • Data centers<\/li>\n
                  • Solar PV power plants<\/li>\n
                  • Wind power projects<\/li>\n
                  • Battery energy-storage systems<\/li>\n
                  • Municipal infrastructure<\/li>\n
                  • Industrial parks<\/li>\n
                  • Construction projects<\/li>\n
                  • EPC power-distribution projects<\/li>\n<\/ul>\n

                    Installation Information Required<\/h2>\n

                    To prepare an accurate transformer design and quotation, please provide:<\/p>\n

                      \n
                    • Required capacity: 1500kVA<\/li>\n
                    • Primary voltage<\/li>\n
                    • Secondary voltage<\/li>\n
                    • Frequency<\/li>\n
                    • Phase<\/li>\n
                    • Vector group<\/li>\n
                    • Required impedance<\/li>\n
                    • Winding material<\/li>\n
                    • Tap range and tap-changer type<\/li>\n
                    • Applicable standard<\/li>\n
                    • Installation altitude<\/li>\n
                    • Maximum and minimum ambient temperature<\/li>\n
                    • Indoor or outdoor installation<\/li>\n
                    • Cable or busbar connection<\/li>\n
                    • Required accessories<\/li>\n
                    • Efficiency or loss requirements<\/li>\n
                    • Quantity<\/li>\n
                    • Destination country<\/li>\n<\/ul>\n

                      Packing and Shipping<\/h2>\n

                      The transformer is prepared for international transport with:<\/p>\n

                        \n
                      • Moisture-resistant protective wrapping<\/li>\n
                      • Reinforced steel or wooden base<\/li>\n
                      • Protected bushings and accessories<\/li>\n
                      • Sealed accessory boxes<\/li>\n
                      • Export-standard marking<\/li>\n
                      • Technical documents and packing list<\/li>\n
                      • Container or breakbulk shipping arrangements<\/li>\n<\/ul>\n

                        Depending on the transformer dimensions and shipping requirements, bushings, radiators and accessories may be removed and packed separately.<\/p>\n

                        Frequently Asked Questions<\/h2>\n

                        Can the voltage ratio be customized?<\/h3>\n

                        Yes. The primary and secondary voltages can be designed according to the local electrical system and project requirements.<\/p>\n

                        Is copper winding available?<\/h3>\n

                        Yes. Both copper and aluminum winding designs are available. Copper windings are often selected for projects requiring compact construction and stronger mechanical performance.<\/p>\n

                        Can this transformer operate in hot climates?<\/h3>\n

                        Yes. The cooling system, insulation level, temperature rise and tank design can be adjusted for high-temperature environments.<\/p>\n

                        Is the transformer suitable for solar projects?<\/h3>\n

                        Yes. It can be designed for solar PV, wind power and energy-storage applications, including special voltage ratios, harmonic considerations and bidirectional power flow.<\/p>\n

                        Can it be used above 1,000 metres?<\/h3>\n

                        Yes. High-altitude transformers are available. The insulation clearances, cooling performance and rated capacity must be corrected according to the installation altitude.<\/p>\n

                        Can you provide FAT documents?<\/h3>\n

                        Yes. The manufacturer can provide routine test reports, drawings, nameplate information, packing lists and other agreed FAT documents before shipment.<\/p>\n

                        What information is needed for a quotation?<\/h3>\n

                        Please provide the voltage ratio, frequency, vector group, winding material, impedance, installation environment, required standard, accessories, quantity and destination country.<\/p>","protected":false},"excerpt":{"rendered":"

                        The 1500kVA oil-immersed transformer provides safe, efficient and reliable power distribution for utility, industrial and renewable energy projects. Available with customized voltage ratios, copper or aluminum windings, and ONAN cooling, it is manufactured and tested in accordance with IEC or IEEE standards.<\/p>","protected":false},"featured_media":2044,"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-2043","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\/fr\/wp-json\/wp\/v2\/product\/2043","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.zishengelectric.com\/fr\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/www.zishengelectric.com\/fr\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.zishengelectric.com\/fr\/wp-json\/wp\/v2\/media\/2044"}],"wp:attachment":[{"href":"https:\/\/www.zishengelectric.com\/fr\/wp-json\/wp\/v2\/media?parent=2043"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/www.zishengelectric.com\/fr\/wp-json\/wp\/v2\/product_brand?post=2043"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/www.zishengelectric.com\/fr\/wp-json\/wp\/v2\/product_cat?post=2043"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/www.zishengelectric.com\/fr\/wp-json\/wp\/v2\/product_tag?post=2043"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}