{"id":2046,"date":"2026-09-16T14:22:10","date_gmt":"2026-09-16T06:22:10","guid":{"rendered":"https:\/\/www.zishengelectric.com\/?post_type=product&p=2046"},"modified":"2026-09-16T14:22:10","modified_gmt":"2026-09-16T06:22:10","slug":"1600kva-oil-immersed-transformer","status":"publish","type":"product","link":"https:\/\/www.zishengelectric.com\/fr\/product\/1600kva-oil-immersed-transformer","title":{"rendered":"1600kVA Oil Immersed Transformer"},"content":{"rendered":"
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The 1600kVA oil-immersed transformer is a three-phase distribution transformer designed to convert medium-voltage electricity into a stable low-voltage supply. It is suitable for utility networks, industrial facilities, renewable energy projects, commercial buildings and infrastructure systems.<\/p>\n

The transformer uses a high-permeability silicon-steel core, copper or aluminum windings and transformer-grade insulating oil. Voltage ratio, vector group, impedance, losses, cooling method, protection accessories and environmental design can be customized to meet specific project requirements.<\/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
Parameter<\/th>\nStandard Configuration \/ Options<\/th>\n<\/tr>\n<\/thead>\n
Rated Capacity<\/td>\n1600kVA \/ 1.6MVA<\/td>\n<\/tr>\n
Transformer Type<\/td>\nThree-phase oil-immersed distribution transformer<\/td>\n<\/tr>\n
Primary Voltage<\/td>\n6kV\u201335kV, customized<\/td>\n<\/tr>\n
Secondary Voltage<\/td>\n400V, 415V, 440V, 480V, 690V or customized<\/td>\n<\/tr>\n
Rated Frequency<\/td>\n50Hz or 60Hz<\/td>\n<\/tr>\n
Cooling Method<\/td>\nONAN; ONAF optional<\/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%<\/td>\n<\/tr>\n
Core Material<\/td>\nCold-rolled grain-oriented silicon steel<\/td>\n<\/tr>\n
Insulating Fluid<\/td>\nMineral oil, natural ester or synthetic ester<\/td>\n<\/tr>\n
Tank Structure<\/td>\nHermetically sealed corrugated tank or conservator type<\/td>\n<\/tr>\n
Installation<\/td>\nIndoor or outdoor<\/td>\n<\/tr>\n
Standard Altitude<\/td>\nUp to 1,000m; high-altitude design available<\/td>\n<\/tr>\n
Ambient Temperature<\/td>\nTypically \u221225\u00b0C to +40\u00b0C; special design available<\/td>\n<\/tr>\n
Corrosion Protection<\/td>\nC3, C4 or C5 paint system<\/td>\n<\/tr>\n
Applicable Standards<\/td>\nIEC 60076, IEEE C57, ANSI, GB or project standard<\/td>\n<\/tr>\n
Expected Service Life<\/td>\nApproximately 25\u201330 years under proper operating conditions<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

Typical Voltage Configurations<\/h2>\n

The 1600kVA transformer can be supplied in configurations such as:<\/p>\n

    \n
  • 10kV\/0.4kV<\/li>\n
  • 11kV\/0.415kV<\/li>\n
  • 11kV\/0.433kV<\/li>\n
  • 13.8kV\/0.48kV<\/li>\n
  • 20kV\/0.4kV<\/li>\n
  • 22kV\/0.415kV<\/li>\n
  • 33kV\/0.415kV<\/li>\n
  • 33kV\/0.48kV<\/li>\n
  • Other customized voltage ratios<\/li>\n<\/ul>\n

    Typical Rated Current<\/h2>\n

    The rated current depends on the selected voltage ratio.<\/p>\n

    \n
    \n\n\n\n\n\n\n\n\n\n
    Voltage Side<\/th>\nExample Voltage<\/th>\nApproximate Rated Current<\/th>\n<\/tr>\n<\/thead>\n
    High Voltage<\/td>\n11kV<\/td>\n84A<\/td>\n<\/tr>\n
    Low Voltage<\/td>\n415V<\/td>\n2,226A<\/td>\n<\/tr>\n
    Low Voltage<\/td>\n400V<\/td>\n2,309A<\/td>\n<\/tr>\n
    High Voltage<\/td>\n33kV<\/td>\n28A<\/td>\n<\/tr>\n
    Low Voltage<\/td>\n480V<\/td>\n1,925A<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

    Values are calculated for a three-phase 1600kVA transformer and should be confirmed during engineering design.<\/em><\/p>\n

    Key Product Features<\/h2>\n

    High-Efficiency Core<\/h3>\n

    The magnetic core is manufactured from high-permeability, cold-rolled grain-oriented silicon steel. A step-lap core structure can reduce no-load loss, excitation current, vibration and operating noise.<\/p>\n

    Reliable Winding System<\/h3>\n

    Copper or aluminum conductors are selected according to the required electrical performance and project budget. The windings are mechanically reinforced to withstand short-circuit forces and load variations.<\/p>\n

    Efficient Oil Cooling<\/h3>\n

    Transformer oil provides electrical insulation and transfers heat from the core and windings to the tank or radiators. ONAN cooling provides reliable operation without external fans, while ONAF cooling is available for special loading requirements.<\/p>\n

    Sealed Tank Construction<\/h3>\n

    The hermetically sealed corrugated tank helps prevent moisture and oxygen from entering the insulation system. This reduces oil oxidation and routine maintenance requirements.<\/p>\n

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

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

    The electrical and magnetic design can be optimized to provide:<\/p>\n

      \n
    • Reduced no-load and load losses<\/li>\n
    • Stable secondary voltage<\/li>\n
    • Controlled operating temperature<\/li>\n
    • Low noise and vibration<\/li>\n
    • Strong short-circuit resistance<\/li>\n
    • Reliable continuous operation<\/li>\n
    • Lower lifetime energy costs<\/li>\n<\/ul>\n

      Adaptation to Harsh Environments<\/h3>\n

      Special designs are available for:<\/p>\n

        \n
      • High ambient temperatures<\/li>\n
      • High-altitude installation<\/li>\n
      • Coastal salt-fog environments<\/li>\n
      • Desert and dusty locations<\/li>\n
      • Tropical and 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 1600kVA 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
        • Transformer tank<\/li>\n
        • Corrugated fins or external radiators<\/li>\n
        • High-voltage bushings<\/li>\n
        • Low-voltage bushings<\/li>\n
        • Neutral bushing<\/li>\n
        • Off-circuit tap changer<\/li>\n
        • Pressure-relief device<\/li>\n
        • Oil-level indicator, where applicable<\/li>\n
        • Oil filling and drain valves<\/li>\n
        • Earthing terminals<\/li>\n
        • Lifting lugs<\/li>\n
        • Jacking pads<\/li>\n
        • Rollers or skid base<\/li>\n
        • Stainless-steel rating plate<\/li>\n<\/ul>\n

          Optional Accessories<\/h2>\n

          The transformer can be equipped with:<\/p>\n

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

            Customization Options<\/h2>\n
            \n
            \n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
            Item<\/th>\nAvailable Options<\/th>\n<\/tr>\n<\/thead>\n
            Voltage Ratio<\/td>\nCustomized primary and secondary voltages<\/td>\n<\/tr>\n
            Frequency<\/td>\n50Hz or 60Hz<\/td>\n<\/tr>\n
            Winding<\/td>\nCopper or aluminum<\/td>\n<\/tr>\n
            Vector Group<\/td>\nAccording to system configuration<\/td>\n<\/tr>\n
            Voltage Regulation<\/td>\nOff-circuit or on-load tap changer<\/td>\n<\/tr>\n
            Cooling<\/td>\nONAN or ONAF<\/td>\n<\/tr>\n
            Insulating Fluid<\/td>\nMineral oil, natural ester or synthetic ester<\/td>\n<\/tr>\n
            Tank Design<\/td>\nSealed corrugated or conservator type<\/td>\n<\/tr>\n
            Efficiency<\/td>\nAccording to local regulations or tender requirements<\/td>\n<\/tr>\n
            Temperature Rise<\/td>\nStandard or reduced temperature-rise design<\/td>\n<\/tr>\n
            Noise<\/td>\nStandard or low-noise design<\/td>\n<\/tr>\n
            Paint System<\/td>\nC3, C4 or C5 corrosion protection<\/td>\n<\/tr>\n
            Terminals<\/td>\nBushings, cable boxes or busbar connections<\/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 and Quality Control<\/h2>\n

            The manufacturing process includes:<\/p>\n

              \n
            1. Technical requirement review<\/li>\n
            2. Electrical and mechanical design<\/li>\n
            3. Drawing confirmation<\/li>\n
            4. Core cutting and stacking<\/li>\n
            5. High- and low-voltage winding production<\/li>\n
            6. Active-part assembly<\/li>\n
            7. Vacuum drying<\/li>\n
            8. Tank manufacturing and surface treatment<\/li>\n
            9. Vacuum oil filling<\/li>\n
            10. Electrical testing<\/li>\n
            11. Final inspection and packing<\/li>\n<\/ol>\n

              Routine Factory Tests<\/h2>\n

              Every transformer is tested before shipment. Routine tests generally include:<\/p>\n

                \n
              • Winding resistance measurement<\/li>\n
              • Voltage-ratio measurement<\/li>\n
              • Vector-group verification<\/li>\n
              • No-load loss and current measurement<\/li>\n
              • Load-loss measurement<\/li>\n
              • Short-circuit impedance 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
              • Tap-changer functional test<\/li>\n
              • Tank leakage inspection<\/li>\n
              • Accessory and alarm-contact testing<\/li>\n
              • Visual and dimensional inspection<\/li>\n<\/ul>\n

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

                The following tests can be arranged when required:<\/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
                • Capacitance and dissipation-factor test<\/li>\n
                • Frequency response analysis<\/li>\n
                • Dissolved-gas analysis<\/li>\n
                • Customer-witnessed FAT<\/li>\n
                • Independent third-party inspection<\/li>\n<\/ul>\n

                  Applications<\/h2>\n

                  The 1600kVA oil-immersed transformer is suitable for:<\/p>\n

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

                    Packing and Shipping<\/h2>\n

                    The transformer is secured on a reinforced base and protected with moisture-resistant export packaging. Bushings, instruments and accessories are protected against impact and may be packed separately when required.<\/p>\n

                    Available transportation methods include:<\/p>\n

                      \n
                    • Standard or open-top container<\/li>\n
                    • Flat-rack container<\/li>\n
                    • Breakbulk vessel<\/li>\n
                    • Road transportation<\/li>\n
                    • Railway transportation<\/li>\n<\/ul>\n

                      Routine test reports, approved drawings, packing lists, operation manuals and agreed quality documents can be supplied with the transformer.<\/p>\n

                      Information Required for a Quotation<\/h2>\n

                      Please provide:<\/p>\n

                        \n
                      • Primary and secondary voltage<\/li>\n
                      • Frequency<\/li>\n
                      • Vector group<\/li>\n
                      • Winding material<\/li>\n
                      • Required impedance<\/li>\n
                      • Tap range and tap-changer type<\/li>\n
                      • Applicable standard<\/li>\n
                      • Installation altitude<\/li>\n
                      • Ambient temperature<\/li>\n
                      • Indoor or outdoor installation<\/li>\n
                      • Cable or busbar connection<\/li>\n
                      • Required accessories<\/li>\n
                      • Loss or efficiency requirements<\/li>\n
                      • Quantity<\/li>\n
                      • Destination country<\/li>\n<\/ul>\n

                        Final technical parameters, losses, dimensions, weight and accessories are subject to the approved project specification and manufacturing drawings.<\/em><\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n

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