CEMarked CEMarked Delivering high-efficiency toroidal cores, oil-immersed sub-distribution transformers, reactive power series reactors, and clean control magnetics designed to exceed KS C IEC standards and meet rigorous Korean industrial demands.
Why South Korea's advanced industrial ecosystem—encompassing Gyeonggi-do wafer fabs, Ulsan shipyards, and Changwon robotics centers—is transitioning toward toroidal power magnetics.
Unlike conventional E-I laminated configurations where flux leakage occurs at the stacked joints, a continuous-strip grain-oriented silicon steel (CRGO) toroidal core boasts a closed magnetic circuit. This minimizes radiated electromagnetic interference (EMI) by up to 85% to 90%, protecting high-sensitivity lithography tools, cleanroom sensors, and medical diagnostic equipment.
Toroidal power transformers achieve thermal and flux saturation equilibrium in a compact footprint up to 50% lighter and smaller than equivalent laminated units. This enables control cabinet engineers in Korean automation sectors to integrate higher capacity power modules inside slim DIN-rail or rack-mount enclosures without expanding physical floor space.
The absence of air gaps and the uniform mechanical clamping force around the wound core eliminate magnetostriction vibration. Operating acoustic noise regularly falls below 30 dBA, meeting stringent workspace regulations across Korean electronics assembly plants, laboratory cleanrooms, and municipal smart buildings.
Engineering customized inductive solutions aligned with the 220V/380V 60Hz utility profile, harmonic distortion demands, and rigorous energy management requirements of the Republic of Korea.
Deployed within Pyeongtaek and Hwaseong semiconductor lines. Our copper-shielded toroidal isolation units attenuate high-frequency harmonics, protect wafer-handling robots from grid transients, and eliminate electrostatic coupling.
Integrated across Chungcheong and Gyeongsang gigafactories. Custom series reactors and step-up toroidal transformers handle massive continuous cycling without thermal breakdown during lithium-ion cell formation and testing.
Supplied to Seoul medical clusters. Built with dual medical-grade isolation, low leakage current (<50µA), reinforced Class H winding insulation, and integrated thermal cutoff switches for patient-critical bio-imaging setups.
Installed alongside utility battery storage (BESS) and coastal wind installations in Jeolla-do. Optimized for 60Hz high-harmonic inverter outputs, dampening THD (Total Harmonic Distortion) and regulating DC-bus busbar stability.
Direct comparison of core parameters engineered to ensure full compatibility with Korean power transmission systems and international export criteria.
| Product Family | Rated Power / Current | Standard Voltages | Frequency | Key Testing & Certifications |
|---|---|---|---|---|
| Toroidal Power Transformers | 50VA to 50kVA | 110V, 220V, 380V, 440V Custom | 50 / 60 Hz | CE / IEC 61558 / KS C Compliant |
| Series & Line/Load Reactors | Up to 2500A (Reactance 3%–14%) | 220V, 380V, 440V, 690V | 60 Hz (50 Hz ready) | DVDF, Digital LCR, Temperature Rise |
| Cast Resin & Dry Transformers | 50kVA to 5000kVA | 3.3kV, 6.6kV, 11kV, 22kV to LV | 50 / 60 Hz | F1 Fire Behavior, Computerized OC/SC |
| Oil-Immersed Substation Units | 630kVA to 30MVA | Up to 154kV / 22.9kV / 380V | 60 Hz Korean Grid Standard | Hermetically Sealed, Dissolved Gas Analysis |
| Sine Wave & Harmonic Filters | Up to 500HP Inverter Drive Loads | 380V – 480V 3-Phase Systems | PWM Frequencies to 16kHz | THD Attenuation < 5%, dv/dt Reduction |
Combining the heritage of an established industrial automation group with specialized high-volume magnetics manufacturing across a 5,500 m² state-of-the-art facility.
Every single unit undergoes computerized routine testing prior to dispatch: automated turns-ratio verification, insulation resistance checks (Megger), Double Voltage Double Frequency (DVDF) induced overvoltage testing, and milliohm winding resistance measurements.
Our parent entity, Prima Automation, has pioneered PLC, SCADA, and hazardous-area control consoles since 1990. We engineer magnetic products with real-world installer requirements in mind: thermal margin headroom, low-stress mounting brackets, and clear wiring labels.
We routinely manufacture for export markets, ensuring our magnetic and winding designs support South Korea's 60Hz supply frequency, specific line voltages (22.9kV MV networks, 380V/220V LV circuits), and overseas maritime transport moisture barriers.
Key technical, regulatory, and logistics answers for electrical engineers, system integrators, and sourcing managers across South Korea.
