Dongwoo Electric Co., Ltd. is a specialized manufacturer of transformers, established in 1988, leading the localization of epoxy-molded instrument transformers. The company is an innovative strong small and medium-sized enterprise aiming for the global market by providing sustainable energy solutions through eco-friendly and digital power equipment technologies.DongwooElectricCo.,Ltd.isaspecializedmanufactureroftransformers,establishedin1988,leadingthelocalizationofepoxy-moldedinstrumenttransformers.Thecompanyisaninnovativestrongsmallandmedium-sizedenterpriseaimingfortheglobalmarketbyprovidingsustainableenergysolutionsthrougheco-friendlyanddigitalpowerequipmenttechnologies.
Key Products/TechnologiesKeyProducts/Technologies
Instrument Transformers: Indoor type CT (DAB-401A, DAB-411A(W)), Outdoor type VT (DPO-301N, DPO-209S), Indoor Epoxy Mold type MOF (DMI-213N), Plug in type Epoxy Mold MOF (DMS-211N), Capacitive V.D (DVD-12NI), Sensor Relay (DSR-1,2), and various other models [Database, 13, 20].InstrumentTransformers:IndoortypeCT(DAB-401A,DAB-411A(W)),OutdoortypeVT(DPO-301N,DPO-209S),IndoorEpoxyMoldtypeMOF(DMI-213N),PlugintypeEpoxyMoldMOF(DMS-211N),CapacitiveV.D(DVD-12NI),SensorRelay(DSR-1,2),andvariousothermodels[Database,13,20].
Epoxy Insulators: Epoxy Mold Insulation Rod (DIR-5500H3,8000H,H1), Epoxy Mold Post Insulator (DIP-0720H,1450T), producing insulators for distribution and transmission GIS [Database, 10, 20].EpoxyInsulators:EpoxyMoldInsulationRod(DIR-5500H3,8000H,H1),EpoxyMoldPostInsulator(DIP-0720H,1450T),producinginsulatorsfordistributionandtransmissionGIS[Database,10,20].
Eco-friendly Power Equipment: Gas Insulated Switchgear (GIS) utilizing eco-friendly insulating gases (g3, N2/O2, etc.) to replace SF6 gas, and an eco-friendly product lineup using bio-epoxy materials.Eco-friendlyPowerEquipment:GasInsulatedSwitchgear(GIS)utilizingeco-friendlyinsulatinggases(g3,N2/O2,etc.)toreplaceSF6gas,andaneco-friendlyproductlineupusingbio-epoxymaterials.
Digital Power Equipment and Solutions: Development and supply of Low Power Instrument Transformers (LPIT), big data-based diagnostic systems, Insulation Monitoring System (DMS), digital substation operating systems, and MV/LV AC and DC product groups.DigitalPowerEquipmentandSolutions:DevelopmentandsupplyofLowPowerInstrumentTransformers(LPIT),bigdata-baseddiagnosticsystems,InsulationMonitoringSystem(DMS),digitalsubstationoperatingsystems,andMV/LVACandDCproductgroups.
Core Technological Capabilities: Expertise in epoxy insulation technology, eco-friendly insulating gas technology, bio-epoxy material technology, Low Power Instrument Transformer (LPIT) technology, and integrated sensor and communication technologies.CoreTechnologicalCapabilities:Expertiseinepoxyinsulationtechnology,eco-friendlyinsulatinggastechnology,bio-epoxymaterialtechnology,LowPowerInstrumentTransformer(LPIT)technology,andintegratedsensorandcommunicationtechnologies.
Core AdvantagesCoreAdvantages
Over 30 years of industry experience and unique expertise in epoxy insulation technology.Over30yearsofindustryexperienceanduniqueexpertiseinepoxyinsulationtechnology.
Leadership in the localization and development of epoxy-molded instrument transformers and insulators for distribution to ultra-high voltage applications.Leadershipinthelocalizationanddevelopmentofepoxy-moldedinstrumenttransformersandinsulatorsfordistributiontoultra-highvoltageapplications.
Pioneering eco-friendly power equipment technologies, including SF6-alternative eco-friendly insulating gases and bio-epoxy material applications.Pioneeringeco-friendlypowerequipmenttechnologies,includingSF6-alternativeeco-friendlyinsulatinggasesandbio-epoxymaterialapplications.
Technological competitiveness in digital power equipment, such as Low Power Instrument Transformers (LPIT) and big data-based predictive diagnostic solutions.Technologicalcompetitivenessindigitalpowerequipment,suchasLowPowerInstrumentTransformers(LPIT)andbigdata-basedpredictivediagnosticsolutions.
Continuous technological innovation through national R&D projects related to renewable energy, smart grids, digital substations, and gas-insulated switchgear.ContinuoustechnologicalinnovationthroughnationalR&Dprojectsrelatedtorenewableenergy,smartgrids,digitalsubstations,andgas-insulatedswitchgear.
Securing major domestic and international quality and safety certifications, including CE, JIEC, UL, KS, and KEPIC-EN.Securingmajordomesticandinternationalqualityandsafetycertifications,includingCE,JIEC,UL,KS,andKEPIC-EN.
An integrated production system with in-house capabilities for product design, manufacturing, and testing.Anintegratedproductionsystemwithin-housecapabilitiesforproductdesign,manufacturing,andtesting.
Recognized technological prowess and growth potential, evidenced by selections for 'Strong Small and Medium-sized Enterprises 100' (2019), 'National Representative Innovative Companies 1000' (2020), and 'Energy Specialized Company' (2021).Recognizedtechnologicalprowessandgrowthpotential,evidencedbyselectionsfor'StrongSmallandMedium-sizedEnterprises100'(2019),'NationalRepresentativeInnovativeCompanies1000'(2020),and'EnergySpecializedCompany'(2021).
Target IndustrieTargetIndustrie
Power Generation and Transmission/Distribution Systems: Supply of essential equipment for stable operation of power systems in hydro/thermal power plants and nuclear power plants.PowerGenerationandTransmission/DistributionSystems:Supplyofessentialequipmentforstableoperationofpowersystemsinhydro/thermalpowerplantsandnuclearpowerplants.
Industrial Plants: Application of power equipment in various industrial plant sectors, including steel, chemical, and shipbuilding.IndustrialPlants:Applicationofpowerequipmentinvariousindustrialplantsectors,includingsteel,chemical,andshipbuilding.
Transportation Infrastructure: Establishment of power supply and control systems for railway and subway systems.TransportationInfrastructure:Establishmentofpowersupplyandcontrolsystemsforrailwayandsubwaysystems.
Eco-friendly Energy and Smart Infrastructure: Renewable energy generation complexes, smart city infrastructure, Energy Storage Systems (ESS), and Low Voltage Direct Current (LVDC) systems.Eco-friendlyEnergyandSmartInfrastructure:Renewableenergygenerationcomplexes,smartcityinfrastructure,EnergyStorageSystems(ESS),andLowVoltageDirectCurrent(LVDC)systems.
Digital Substations and Smart Grids: Provision of core technologies and solutions for unmanned substation automation and intelligent power grid operation.DigitalSubstationsandSmartGrids:Provisionofcoretechnologiesandsolutionsforunmannedsubstationautomationandintelligentpowergridoperation.
Major MarketsMajorMarkets
Indonesia, PhilippinesIndonesia,Philippines
Certifications/PatentsCertifications/Patents
Patents Held: 30 patents (as of January 2026), 56 patents (according to RnDcircle).PatentsHeld:30patents(asofJanuary2026),56patents(accordingtoRnDcircle).
Quality Management Systems: ISO 9002 / KSA 9002 certification (1997), Anti-Bribery Management System (ISO 37001) acquisition (2024).QualityManagementSystems:ISO9002/KSA9002certification(1997),Anti-BriberyManagementSystem(ISO37001)acquisition(2024).
National Standard Certification: KS C 1707 (Instrument Transformers for Power Metering) certification (2010).NationalStandardCertification:KSC1707(InstrumentTransformersforPowerMetering)certification(2010).
International Product Certifications: CE, JIEC, UL certifications.InternationalProductCertifications:CE,JIEC,ULcertifications.
Awards: Recipient of the Dongtap Industrial Medal (2017).Awards:RecipientoftheDongtapIndustrialMedal(2017).