Applications

Proven Solutions Across Diverse Sites

Stable operating performance has been verified in various power environments, including industrial facilities, buildings, hospitals, and schools.

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USE CASES

Installation Cases

Stable operating performance has been verified in various power environments, including industrial facilities, buildings, hospitals, and schools.

  • 01 Korea Airports Corporation
    EquipmentBefore ReplacementAfter Replacement
    TransformerHigh-efficiency cast-resin transformer (1,700 kVA) + active filterHybrid oil-immersed transformer (1,700 kVA)
    Active filter60A x 4 units = 240AX

    분석 결과

    CategoryBefore InstallationAfter Installation개선효과
    Harmonics (THD)10.88.3▼ 23%
    Unbalance11.52.7▼ 77%
    PF0.950.99△ 4%

    Harmonics

    Before Installation
    After Installation

    Harmonics(단위 : %)

    Unbalance

    Before Installation
    After Installation

    Unbalance(단위 : %)

    Harmonics

    Before Installation
    After Installation

    PF(단위 : %)

    • Harmonics Reduction ▼ 23%
    • Unbalance Improvement ▼ 77%
    • Power Factor Improvement △ 4%
  • 02 Ulsan Airport
    EquipmentBefore ReplacementAfter Replacement
    항공등화High-Efficiency Cast-Resin 150kVAHybrid Oil-Immersed 200kVA
    General PowerHigh-Efficiency Cast-Resin 600kVAHybrid Oil-Immersed 750kVA

    항공등화 설치 전 vs 설치 후

    Before InstallationAfter Installation
    High-Efficiency Cast-Resin 150kVA
    Hybrid Oil-Immersed 200kVA

    일반동력 설치 전 vs 설치 후

    Before InstallationAfter Installation
    High-Efficiency Cast-Resin 600kVA
    Hybrid Oil-Immersed 750kVA

    분석 결과

    Category단위항공등화(200kVA)General Power(750kVA)
    Before InstallationAfter Installation증감율(%)Before InstallationAfter Installation증감율(%)
    Active power kW 97 122 △ 25.8 99 48 ▼ 51.5
    ITHD % 35.3 11.1 ▼ 68.6 20.2 10.1 ▼ 50.0
    Unbalance % 5.3 4.0 ▼ 24.5 35.6 11.5 ▼ 67.7
    PF % 90.1 92.3 △ 2.4 95.5 98.3 △ 2.9
    • 항공등화 : Harmonics Reduction ▼ 68.6%
    • Unbalance Improvement ▼ 24.5%
    • Power Factor Improvement △ 2.4%
    • General Power : Harmonics Reduction ▼ 50.0%
    • Unbalance Improvement ▼ 67.7%
    • Power Factor Improvement △ 2.9%
  • 03 Korea Expressway Corporation (LED load)
    EquipmentBefore ReplacementAfter Replacement
    TransformerHigh-Efficiency Oil-Immersed 200kVAHybrid Oil-Immersed 200kVA
    Load TypeLEDLED

    분석 결과

    Category Before Replacement (High-Efficiency Transformer) After Installation (Hybrid Transformer) Reduction(%)
    LED Dimming LED Dimming LED Dimming
    15% 50% 100% 15% 50% 100% 15% 50% 100%
    Voltage(V) 376375375 377377377 △ 0.3△ 0.5△ 0.5
    Current(A) 62105166 5189156 ▼ 17.7▼ 15.2▼ 6.0
    유효전력(kW) 3465106 3056101 ▼ 11.8▼ 13.8▼ 4.7
    피상전력(kVA) 4068108 3358102 ▼ 17.5▼ 14.7▼ 5.6
    Power Factor(PF) 0.850.950.98 0.900.970.99 △ 5.9△ 2.1△ 1.0
    V_THD(%) 1.81.51.5 1.51.61.4 ▼ 17.5△ 6.7▼ 6.7
    I_THD(%) 17.18.35.7 13.97.03.1 ▼ 18.7▼ 15.7▼ 45.6
    I_TDD(%) 6.54.85.3 4.03.52.7 ▼ 38.6▼ 27.1▼ 49.1
    • Harmonics Reduction ▼ 49.1%
    • Power Factor Improvement △ 1.0%
  • 04 Major Corporate Plant (motors / inverter loads)
    EquipmentBefore ReplacementAfter Replacement비고
    TransformerHigh-Efficiency Oil-Immersed 4대(4,500kVA)Hybrid Oil-Immersed 4대(4,500kVA) 인버터 제어 동력설비에 Hybrid 변압기를 적용한 사례
    Load TypeGeneral Power, InverterGeneral Power, Inverter
    Hybrid Oil-Immersed 1,000kVA
    Hybrid Oil-Immersed 1,000kVA
    Hybrid Oil-Immersed 1,000kVA
    Hybrid Oil-Immersed 1,500kVA

    분석 결과

    Category단위1,500 kVA1,000 kVA
    Before ReplacementAfter Installation증감율(%)Before ReplacementAfter Installation증감율(%)
    V_THD % 1.4 1.1 ▼ 21.4 1.3 1.1 ▼ 15.4
    I_THD % 5.1 2.7 ▼ 47.1 13.8 5.7 ▼ 58.7
    V_Unb % 0.7 0.3 ▼ 57.1 0.7 0.2 ▼ 71.4
    I_Unb % 10.4 6.3 ▼ 39.4 6.0 2.9 ▼ 51.7
    PF % 86.4 89.2 △ 3.2 73.3 81.2 △ 10.8
    • 1,000kVA : Harmonics(ITHD) Reduction ▼ 58.7%
    • Unbalance (IUnb) Improvement ▼ 51.7%
    • Power Factor Improvement △ 10.8%
    • 1,500kVA : Harmonics(ITHD) Reduction ▼ 47.1%
    • Unbalance (IUnb) Improvement ▼ 39.4%
    • Power Factor Improvement △ 3.2%
  • 05 J Hotel (lighting / heating load)
    EquipmentBefore ReplacementAfter Replacement
    TransformerHigh-efficiency cast-resin transformer (400kVA)Hybrid cast-resin transformer (400kVA)
    Load TypeLighting & PowerLighting & Power

    분석 결과

    Category단위Before ReplacementAfter Installation증감율 (%)
    V_THD %1.161.10▼ 5.2
    I_THD%23.3916.77▼ 30.1
    PF%9396△ 3.0
    • Harmonics(ITHD) Reduction ▼ 30.1%
    • Power Factor Improvement △ 3.0%
  • 06 Incheon Environment Corporation (concentration equipment)
    EquipmentBefore ReplacementAfter Replacement
    TransformerHigh-efficiency cast-resin transformer (1,000kVA)Hybrid cast-resin transformer (1,000kVA)
    Load TypeConcentration EquipmentConcentration Equipment

    분석 결과

    Category단위Before ReplacementAfter Installation증감율 (%)
    V_THD %1.10.8▼ 29.3
    I_THD%5.43.6▼ 33.4
    PF%9494-
    • Harmonics Reduction ▼ 33.4%
  • 07 Dongwha Enterprise (GHG reduction)

    Power Quality Diagnostic Results

    After replacement with Hybrid Transformers, voltage and current harmonics decreased, and overall power efficiency improved together with power factor.

    • Average harmonic reduction of 5–7% per transformer and reduced reactive power losses led to lower power consumption.
    Transformer Voltage / Frequency / Power Factor Load Ratio (%) Voltage Harmonics (%) Current Harmonics (%) Current Distortion (%)
    TR #11 인정 / 정상(98%)50.8▼ 3.38▼ 7.73▼ 5.58
    TR #12 인정 / 정상(98%)36.7▼ 2.58▼ 7.53▼ 5.93
    TR #13 인정 / 정상(90%)60.1▼ 1.52▼ 1.81△ 0.18
    Diagnostic ResultAverage current harmonic reduction rate 5.69%

    Savings Calculation Formula : Transformer capacity (kVA) × THDF reduction rate (%) × load ratio (%)

    Savings versus post-replacement power consumption

    Power-use period: Aug. 2023 – Oct. 2023

    Transformer Power savings(MWh/년) Electricity cost savings (KRW million/year) 절감률(%) 투자비용(KRW million) 투자회수기간(Year)
    TR #11 420.954.77.6383.931.5
    TR #12 345.945.05.5683.931.9
    TR #13 93.512.21.0283.9316.9
    Diagnostic Results 860.4 111.9 3.7 252 2.3

    Electricity charge = Power consumption × KRW 130/kWh / power-use period (28 days/month × 12 months)

    • Converted to annual savings based on the actual operating load before replacement → approximately 3.7% reduction in annual electricity consumption versus before replacement
    • Payback period: 2.3 years based on the same operating load as before replacement
  • 08 Design Application Case

    Hybrid Transformers are clearly specified in single-line diagrams and technical specifications, making them easy and clear to apply from the design stage. They can be reflected directly in drawings and specifications without additional design work, improving efficiency and consistency.

    • Lighting, Power BANK (retail / neighborhood facilities)
      MOLD TR (Hybrid Transformer)
    • 3Φ 500 kVA
    • Primary Voltage : 22.9kV
      Secondary Voltage : 380V / 220V
    • TR#3
      General Power
    • 3Φ -4W, 60Hz
      22.9kV / 380 / 220V 0V 1,500kVA
    • Hybrid Transformer