Business Introduction Transformer

Transformer for ESS

Properties and Uses of the Product

  • Number of Phases Three-winding, Five-winding Transformer for ESS
  • Capacity 5,200kVA
  • Efficiency 99% or Higher
  • Certification KERI Certification
Three-winding Five-winding
General Installation Location Outdoors Outdoors
Applied Standards IEC-60076 IEC-60076
Scope of Application altitude : 1000M or Lower
Ambient temperature : minimum -25℃, maximum 40℃
altitude : 1000M or Lower
Ambient temperature : minimum -25℃, maximum 40℃
Insulating Oil / Insulation Type Equivalent to KSC 2301 Type 1 No. 2 or better / A CLASS Equivalent to KSC 2301 Type 1 No. 2 or better / A CLASS
Top Coat Color MUNSELL NO. 5Y 7/1 MUNSELL NO. 5Y 7/1
Rated Rated Capacity (kVA) 5,200 5,200
Number of Phases / Frequency (HZ) 3 / 60 3 / 60
Transformation Ratio (V) 22,900/440/440 22,900/440/440/440/440
Tap Voltage (kV) R22.9 ±2×2.5% (Five Taps) R22.9 ±2×2.5% (Five Taps)
Tap Change Method Tap Switch Under No Load (NLTC) Tap Switch Under No Load (NLTC)
Connection or Polarity YNd1d1 (Primary Neutral Point Withdrawn by Bushing) YNd1d1d1d1 (Primary Neutral Point Withdrawn by Bushing)
Cooling Method Oil-immersed Self-cooled (ONAN) Oil-immersed Self-cooled (ONAN)
Properties Temperature Rising Limit (°C ) Oil Temperature (Thermometer Method) 60 60
Winding Temperature (Resistance Method) 65 65
Impulse Insulation Level
(Track / Neutral Point)
Primary Winding (kV) 125 125
Secondary and Tertiary Winding (kV) - -
Power Frequency Withstand Voltage
(Track / Neutral Point)
Primary Winding (kV) 50 50
Secondary and Tertiary Winding (kV) 3 3
This data will be Guaranteed at 75℃ ONAN base.
Efficiency (%) 99.0 99.0
Impedance (%) 6.0 6.0
Voltage Regulation (%) 1.0 1.0
No-load Current (%) 2.0 2.0
Structure Winding Material CU CU
Oil Preservation Method CONSERVATOR TYPE CONSERVATOR TYPE
Bushing Position [First,Second,Third Bushing] Side Bushing Type Side Bushing Type
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