Oil immersed Transformer
    Dry type Transformer
    Cast Resin Transformer
    Special Transformer
 
· Capacity up to 765kV 2000MVA, worldwide expriences with proven record
· Competitive price
· On-time delivery
· Qualified engineers and skilled workers
· Advanced design technology to perform seismic analysis and short-circuit calculation
· Equipped with the most advanced manufacturing and testing equipment
· Quality control on every process of manufacturing
 
Power Transformer Distribution Transformer
Rated Capacity 5MVA~2000MVA 50kVA~5000kVA
Rated Voltage 22.9kV~765kV 480V~22.9kV
Annual Production Capacity 120,000MVA 7,000MVA
 
· IEC60076
· ANSI C57
· NEMA-TR1
· CSA-C88-M90
· BS
· AS2374
· JEC-204
· NEMA-TR1
· ISO9001, ISO14000
OHSAS18000
1. Production Capacity
1) Annual production capacity : 100,000MVA
▶ 200kV class factory up to 200kV
▶ 300kV class factory up to 300kV
▶ 400kV class factory up to 400kV
▶ 500kV class factory up to 500kV
  ▶ 800kV class factory up to 800kV
▶ Distribution transformer factory
2) Transformer MVA : up to 1,300MVA
3) Transformer voltage : up to 800kV
4) Total factory space : 600,000 ft2
5) Manpower for Transformer factory
▶ 78 Design Engineers
▶ 50 Test Engineers
▶ 960 Workers
▶ 15 Development Engineers
2. Production History
HHI is leading manufacturer in the world market
FY1978 161kV
FY1979 345kV
FY1985 400kV
FY1993 500kV
FY1997 765kV

FY1999 17,300MVA
FY2000 21,700MVA
FY2001 26,700MVA
FY2002 29,500MVA
FY2003 32,000MVA
FY2004 35,000MVA
FY2006 60,000MVA
FY2008 90,000MVA
3. Production Range
1) Power transformer
2) Distribution transformer
3) Cast resin transformer (Up to 30kV, 7MVA)
4) Reactor
5) SF6 Gas Insulated Power Transformer
6) Special purpose transformer
4. R&D and 3D CAD System
Design Department-Standardization & Manufacturing Design
1) Electro Mechanical Research Institute
-Electro Magnetic Analysis
-Thermal & Fluid Analysis
2) VIT -Ukraine
-Ultra High Voltage Transformer
-Gas Insulated Transformer
-Basic Design & Analysis
3) Industrial Research Institute
-Material
-Mechanical strength
4) Maritime Research Institute
-Vibration & Noise
5) Hunelec - Hungary
-Hybrid Insulated Transformer
-Light Weight Transformer
-Basic Design & Analysis
5. Xformer with Natural Ester-based Fluids Characteristics of Natural Ester-based Fluids
▶Reduced Fire Liability
▶Reduced Environmental Liability
▶Insulation Life Extension
▶Prevents Moisture Buildup in Insulation Paper
▶Reduction in Voltage Stress Gassing Tendency
▶Elimination of Sludge and Copper Coking
6. Inspection and Test Program
1) Routine Test
▶Winding Resistance Measurement
▶Ratio Check
▶Phase Relationship Check
▶Insulation Resistance Measurement
▶Insulation Power Factor Measurement
▶No load loss & Current Measurement
▶Impedance Voltage & Load Loss Measurement
▶Impulse Test & Switching Impulse Test
▶Induced Over-Voltage Withstand Test
▶Partial Discharge & RIV Measurement
▶Oil Leakage Test
▶Operation Test of All Devices
▶Dissolved Gas in oil Analysis
▶Current Transformer Test
▶Calculation of Efficiency & Voltage Regulation
2) Type Test & Special Test
▶ Audible Sound Level Measurement
▶ Temperature Rise Test
▶ Auxiliary Cooling Losses Measurement
▶ Zero Sequence Impedance Voltage
▶ Pressure Test
 
Catalog
Certificate