{"id":1856,"date":"2026-08-28T14:49:13","date_gmt":"2026-08-28T06:49:13","guid":{"rendered":"https:\/\/www.zishengelectric.com\/?post_type=product&p=1856"},"modified":"2026-09-15T17:40:47","modified_gmt":"2026-09-15T09:40:47","slug":"100kva-dry-type-transformer","status":"publish","type":"product","link":"https:\/\/www.zishengelectric.com\/ar\/product\/100kva-dry-type-transformer","title":{"rendered":"100kVA Dry Type Transformer"},"content":{"rendered":"

The 100kVA Dry Type Transformer<\/strong> is a three-phase, oil-free transformer designed for safe and reliable electrical power distribution. It uses air as the cooling medium and can be supplied in cast resin, VPI, or other dry-type configurations<\/strong> according to project requirements.<\/p>\n

A typical configuration is 10kV \/ 0.4kV, 100kVA, 50Hz, Dyn11<\/strong>, although the primary and secondary voltages, vector group, impedance, enclosure and other parameters can be customized.<\/p>\n

The transformer complies with IEC 60076-11<\/strong>, the international standard covering dry-type power transformers.<\/p>\n

\n

2. Technical Specifications<\/h1>\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 Specification<\/th>\n<\/tr>\n<\/thead>\n
Rated Capacity<\/strong><\/td>\n100 kVA<\/td>\n<\/tr>\n
Phase<\/strong><\/td>\nThree Phase<\/td>\n<\/tr>\n
Frequency<\/strong><\/td>\n50 \/ 60 Hz<\/td>\n<\/tr>\n
HV Voltage<\/strong><\/td>\n10 kV<\/td>\n<\/tr>\n
LV Voltage<\/strong><\/td>\n0.4 kV \/ 400 V<\/td>\n<\/tr>\n
Voltage Ratio<\/strong><\/td>\n10 \/ 0.4 kV<\/td>\n<\/tr>\n
Vector Group<\/strong><\/td>\nDyn11<\/td>\n<\/tr>\n
Cooling Method<\/strong><\/td>\nAN \/ AF<\/td>\n<\/tr>\n
Insulation Type<\/strong><\/td>\nCast Resin<\/td>\n<\/tr>\n
Insulation Class<\/strong><\/td>\nF \/ H<\/td>\n<\/tr>\n
Impedance<\/strong><\/td>\n4% typical<\/td>\n<\/tr>\n
HV Tapping<\/strong><\/td>\n\u00b12 \u00d7 2.5% or \u00b15%<\/td>\n<\/tr>\n
Winding Material<\/strong><\/td>\nCopper \/ Aluminum<\/td>\n<\/tr>\n
Temperature Rise<\/strong><\/td>\n\u2264100 K typical<\/td>\n<\/tr>\n
Installation<\/strong><\/td>\nIndoor \/ Outdoor with enclosure<\/td>\n<\/tr>\n
Protection<\/strong><\/td>\nIP00 \/ IP20 \/ IP21 \/ IP31 etc.<\/td>\n<\/tr>\n
Standard<\/strong><\/td>\nIEC 60076-11<\/td>\n<\/tr>\n
Ambient Temperature<\/strong><\/td>\nTypically -25\u00b0C to +40\u00b0C<\/td>\n<\/tr>\n
Altitude<\/strong><\/td>\n\u22641000 m standard; higher altitude available<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

Actual loss, dimensions, weight, noise level and other values should be finalized according to the selected design and applicable efficiency standard. Published 100kVA designs show considerable variation in these parameters.<\/p>\n

\n

3. Typical 100kVA 10kV\/0.4kV Parameters<\/h1>\n

For a standard 100kVA \/ 10kV \/ 0.4kV<\/strong> transformer, a representative technical configuration is:<\/p>\n

\n
\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Item<\/th>\nTypical Value<\/th>\n<\/tr>\n<\/thead>\n
Rated Power<\/td>\n100 kVA<\/td>\n<\/tr>\n
HV<\/td>\n10 kV<\/td>\n<\/tr>\n
LV<\/td>\n400 V<\/td>\n<\/tr>\n
Frequency<\/td>\n50 Hz<\/td>\n<\/tr>\n
Vector Group<\/td>\nDyn11<\/td>\n<\/tr>\n
Impedance<\/td>\n4%<\/td>\n<\/tr>\n
No-load Loss<\/td>\nApprox. 200\u2013400 W<\/td>\n<\/tr>\n
Load Loss<\/td>\nApprox. 1.4\u20131.8 kW<\/td>\n<\/tr>\n
Cooling<\/td>\nAN<\/td>\n<\/tr>\n
Insulation<\/td>\nClass F<\/td>\n<\/tr>\n
Temperature Rise<\/td>\n\u2264100 K<\/td>\n<\/tr>\n
HV Tap<\/td>\n\u00b12 \u00d7 2.5%<\/td>\n<\/tr>\n
Noise<\/td>\nApprox. 50\u201360 dB(A)<\/td>\n<\/tr>\n
Core<\/td>\nGrain-oriented electrical steel<\/td>\n<\/tr>\n
Winding<\/td>\nCopper \/ Aluminum<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

For example, published 100kVA designs list 220W no-load loss and 1,400W load loss, while other IEC-oriented designs specify 252W and 1,800W respectively. This demonstrates why the final datasheet should use the manufacturer’s project-specific guaranteed values rather than generic figures.<\/p>\n

\n

4. Main Features<\/h1>\n

Oil-Free Design<\/h3>\n

No transformer oil is required, eliminating oil leakage and significantly reducing fire and environmental risks.<\/p>\n

High Fire Safety<\/h3>\n

Cast-resin insulation provides strong fire-retardant characteristics and is particularly suitable for buildings and indoor electrical rooms.<\/p>\n

Low Maintenance<\/h3>\n

The dry-type structure eliminates oil testing, oil replacement and many maintenance requirements associated with oil-immersed transformers.<\/p>\n

High Insulation Strength<\/h3>\n

Vacuum-cast epoxy resin provides strong electrical insulation and mechanical protection for the windings.<\/p>\n

Excellent Short-Circuit Strength<\/h3>\n

The cast windings have strong mechanical stability and can withstand electromagnetic forces during short-circuit conditions.<\/p>\n

Low Noise<\/h3>\n

Optimized magnetic core and winding structures help reduce operating noise, making the transformer suitable for commercial and industrial buildings.<\/p>\n

Flexible Configuration<\/h3>\n

HV\/LV voltage, vector group, impedance, winding material, enclosure, cooling method and monitoring system can be customized.<\/p>\n

\n

5. Transformer Construction<\/h1>\n

Core<\/h2>\n

The transformer core is manufactured from high-quality grain-oriented electrical steel<\/strong> with optimized magnetic flux distribution.<\/p>\n

Typical construction includes:<\/p>\n

    \n
  • Step-lap core assembly<\/li>\n
  • Low magnetic flux density<\/li>\n
  • Reduced no-load loss<\/li>\n
  • Reduced operating noise<\/li>\n
  • High mechanical strength<\/li>\n
  • High-quality insulation between laminations<\/li>\n<\/ul>\n

    High-Voltage Winding<\/h2>\n

    The HV winding can use copper or aluminum conductors and is insulated using cast resin or VPI technology depending on the selected transformer design.<\/p>\n

    For cast-resin transformers, vacuum casting helps reduce internal voids and improve insulation reliability.<\/p>\n

    Low-Voltage Winding<\/h2>\n

    The LV winding is designed to provide:<\/p>\n

      \n
    • Low electrical resistance<\/li>\n
    • Good heat dissipation<\/li>\n
    • Strong short-circuit capability<\/li>\n
    • Stable voltage performance<\/li>\n<\/ul>\n

      Epoxy Resin Insulation<\/h2>\n

      For cast-resin versions, the winding is encapsulated with epoxy resin to protect the conductor and insulation system against moisture, dust and environmental contamination.<\/p>\n

      \n

      6. Cooling System<\/h1>\n

      The standard cooling method is:<\/p>\n

      AN \u2014 Air Natural<\/strong><\/p>\n

      Natural air circulation removes heat from the transformer during normal operation.<\/p>\n

      An optional:<\/p>\n

      AF \u2014 Air Forced<\/strong><\/p>\n

      system can be installed using cooling fans. Forced-air cooling can increase the transformer’s available output under appropriate operating conditions, but the actual permissible capacity must be determined by the manufacturer’s thermal design.<\/p>\n

      Optional components include:<\/p>\n

        \n
      • Cooling fans<\/li>\n
      • Fan control cabinet<\/li>\n
      • PT100 temperature sensors<\/li>\n
      • Digital temperature controller<\/li>\n
      • Over-temperature alarm<\/li>\n
      • Trip protection<\/li>\n<\/ul>\n
        \n

        7. Temperature Monitoring<\/h1>\n

        A temperature monitoring system can be supplied for projects requiring enhanced protection.<\/p>\n

        Typical configuration:<\/p>\n

        PT100 Sensors \u2192 Temperature Controller \u2192 Alarm \/ Trip \u2192 Cooling Fan Control<\/strong><\/p>\n

        Functions can include:<\/p>\n

          \n
        • Real-time winding temperature monitoring<\/li>\n
        • High-temperature alarm<\/li>\n
        • Over-temperature trip<\/li>\n
        • Automatic fan starting<\/li>\n
        • Automatic fan stopping<\/li>\n
        • Fault indication<\/li>\n
        • RS485 \/ Modbus communication<\/li>\n<\/ul>\n

          Temperature monitoring and communication options are commonly available for modern dry-type transformer designs.<\/p>\n

          \n

          8. Enclosure Options<\/h1>\n

          The basic transformer can be supplied as an IP00 open type<\/strong> unit for installation inside a dedicated transformer room.<\/p>\n

          For greater protection, it can be equipped with a metal enclosure.<\/p>\n

          Typical options:<\/p>\n

          IP20 \u2192 IP21 \u2192 IP31 \u2192 IP41<\/strong><\/p>\n

          The enclosure can be customized according to:<\/p>\n

            \n
          • Indoor installation<\/li>\n
          • Outdoor installation<\/li>\n
          • Dusty environments<\/li>\n
          • Industrial environments<\/li>\n
          • Mining applications<\/li>\n
          • Coastal environments<\/li>\n
          • High-humidity areas<\/li>\n<\/ul>\n

            IEC 60076-11 specifically addresses environmental, climatic, fire-behavior and enclosure-related considerations for dry-type transformers.<\/p>\n

            \n

            9. Optional Customization<\/h1>\n

            The 100kVA Dry Type Transformer<\/strong> can be customized according to EPC and project specifications.<\/p>\n

            Electrical Customization<\/h3>\n
              \n
            • 6kV<\/li>\n
            • 6.3kV<\/li>\n
            • 6.6kV<\/li>\n
            • 10kV<\/li>\n
            • 10.5kV<\/li>\n
            • 11kV<\/li>\n
            • 13.8kV<\/li>\n
            • 20kV<\/li>\n
            • 22kV<\/li>\n
            • 33kV<\/li>\n<\/ul>\n

              LV options:<\/p>\n

                \n
              • 380V<\/li>\n
              • 400V<\/li>\n
              • 415V<\/li>\n
              • 440V<\/li>\n
              • 460V<\/li>\n
              • 480V<\/li>\n
              • 690V<\/li>\n<\/ul>\n

                Other Options<\/h3>\n
                  \n
                • Copper winding<\/li>\n
                • Aluminum winding<\/li>\n
                • Dyn11<\/li>\n
                • Yyn0<\/li>\n
                • Dual secondary winding<\/li>\n
                • \u00b12 \u00d7 2.5% tapping<\/li>\n
                • \u00b15% tapping<\/li>\n
                • AN \/ AF cooling<\/li>\n
                • IP-rated enclosure<\/li>\n
                • Temperature controller<\/li>\n
                • PT100<\/li>\n
                • RS485 \/ Modbus<\/li>\n
                • Surge protection<\/li>\n
                • Anti-condensation heater<\/li>\n
                • Outdoor housing<\/li>\n
                • Seismic design<\/li>\n
                • High-altitude design<\/li>\n<\/ul>\n
                  \n

                  10. Applications<\/h1>\n
                  \n
                  \n
                  \n
                  \"100kVA<\/div>\n<\/div>\n<\/div>\n
                  <\/div>\n
                  \n
                  \n
                  \n
                  \n
                  The 100kVA dry-type transformer is suitable for:<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n

                  Industrial Facilities<\/h3>\n

                  Factories, workshops, manufacturing plants and machinery power distribution.<\/p>\n

                  Commercial Buildings<\/h3>\n

                  Shopping centers, office buildings, hotels and commercial complexes.<\/p>\n

                  Hospitals<\/h3>\n

                  Suitable for locations where fire safety and reliable indoor power distribution are important.<\/p>\n

                  Data Centers<\/h3>\n

                  Can be integrated into low-voltage and medium-voltage power distribution systems.<\/p>\n

                  Renewable Energy<\/h3>\n

                  Suitable for solar PV systems, energy storage systems and other renewable-energy applications.<\/p>\n

                  Infrastructure<\/h3>\n

                  Airports, railway systems, tunnels, ports and public facilities.<\/p>\n

                  Mining<\/h3>\n

                  Special configurations can be designed for demanding industrial and mining environments.<\/p>\n

                  Dry-type transformers are widely used in buildings, industrial plants, hospitals, airports and other applications where oil-free and fire-safe power distribution is advantageous.<\/p>\n

                  \n

                  11. Manufacturer Testing<\/h1>\n

                  Each transformer should undergo appropriate factory testing before shipment.<\/p>\n

                  Routine Tests<\/h3>\n
                    \n
                  • Winding resistance test<\/li>\n
                  • Voltage ratio test<\/li>\n
                  • Vector group \/ phase displacement test<\/li>\n
                  • No-load loss measurement<\/li>\n
                  • No-load current measurement<\/li>\n
                  • Short-circuit impedance measurement<\/li>\n
                  • Load loss measurement<\/li>\n
                  • Applied voltage withstand test<\/li>\n
                  • Induced voltage withstand test<\/li>\n
                  • Insulation resistance test<\/li>\n<\/ul>\n

                    Additional Tests<\/h3>\n

                    Depending on project requirements:<\/p>\n

                      \n
                    • Partial discharge test<\/li>\n
                    • Temperature-rise test<\/li>\n
                    • Lightning impulse test<\/li>\n
                    • Noise test<\/li>\n
                    • Short-circuit test<\/li>\n
                    • Fire behavior test<\/li>\n
                    • Enclosure protection test<\/li>\n
                    • Climatic\/environmental tests<\/li>\n<\/ul>\n

                      For EPC projects, the manufacturer can provide a Factory Test Report (FAT)<\/strong> and supporting quality documentation.<\/p>\n

                      \n

                      12. Packing & Shipping<\/h1>\n

                      The transformer should be properly protected before international transportation.<\/p>\n

                      Typical packaging:<\/p>\n

                      Transformer \u2192 Moisture Protection \u2192 Shock Protection \u2192 Wooden Case \/ Steel Frame \u2192 Container Loading<\/strong><\/p>\n

                      Export packaging can include:<\/p>\n

                        \n
                      • Waterproof film<\/li>\n
                      • Moisture-proof protection<\/li>\n
                      • Anti-collision protection<\/li>\n
                      • Reinforced wooden case<\/li>\n
                      • Steel base<\/li>\n
                      • Lifting points<\/li>\n
                      • Shock-resistant fixing<\/li>\n
                      • Nameplate and shipping marks<\/li>\n<\/ul>\n

                        For EPC projects, packing can be customized according to the destination country, transportation method and site requirements.<\/p>\n

                        \n

                        13. Recommended EPC Configuration<\/h1>\n

                        For a typical overseas EPC project, I would recommend presenting the product specification like this:<\/p>\n

                        \n

                        100kVA Dry Type Transformer<\/strong>
                        10kV \/ 0.4kV | 50Hz | 3 Phase<\/strong>
                        Cast Resin | Dyn11 | AN\/AF<\/strong>
                        IEC 60076-11<\/strong>
                        Copper \/ Aluminum Windings<\/strong>
                        Custom Voltage & Enclosure<\/strong>
                        Factory Tested Before Delivery<\/strong><\/p>\n<\/blockquote>\n

                        This is more suitable for an international product page than simply listing \u201c100kVA Dry Type Transformer\u201d<\/strong>, because EPC buyers usually need to quickly confirm capacity + voltage + standard + cooling + vector group + customization capability<\/strong>.<\/p>\n

                        Suggested product-page positioning<\/h3>\n

                        100kVA Dry Type Transformer | 10kV to 0.4kV | IEC 60076-11<\/strong><\/p>\n

                        Safe. Oil-Free. Custom-Engineered.<\/strong><\/p>\n

                        Designed for industrial, commercial, infrastructure and renewable-energy power distribution projects, with customized voltage, insulation, enclosure, cooling and protection options.<\/p>\n","protected":false},"excerpt":{"rendered":"

                        The 100kVA Dry Type Transformer<\/strong> is a three-phase, oil-free transformer designed for safe and reliable electrical power distribution. It uses air as the cooling medium and can be supplied in cast resin, VPI, or other dry-type configurations<\/strong> according to project requirements.<\/p>\n

                        A typical configuration is 10kV \/ 0.4kV, 100kVA, 50Hz, Dyn11<\/strong>, although the primary and secondary voltages, vector group, impedance, enclosure and other parameters can be customized.<\/p>\n

                        The transformer complies with IEC 60076-11<\/strong>, the international standard covering dry-type power transformers.<\/p>","protected":false},"featured_media":2033,"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":[75],"product_tag":[],"class_list":["post-1856","product","type-product","status-publish","has-post-thumbnail","product_cat-dry-type-transformer","first","instock","shipping-taxable","product-type-simple"],"_links":{"self":[{"href":"https:\/\/www.zishengelectric.com\/ar\/wp-json\/wp\/v2\/product\/1856","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.zishengelectric.com\/ar\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/www.zishengelectric.com\/ar\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.zishengelectric.com\/ar\/wp-json\/wp\/v2\/media\/2033"}],"wp:attachment":[{"href":"https:\/\/www.zishengelectric.com\/ar\/wp-json\/wp\/v2\/media?parent=1856"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/www.zishengelectric.com\/ar\/wp-json\/wp\/v2\/product_brand?post=1856"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/www.zishengelectric.com\/ar\/wp-json\/wp\/v2\/product_cat?post=1856"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/www.zishengelectric.com\/ar\/wp-json\/wp\/v2\/product_tag?post=1856"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}