Business Introduction Transformer

Oil Immersed Autotransformer for Railways

Properties and Uses of the Product

Oil Immersed Autotransformer used for electric supply of AC electric railway
  • Number of Phases / Frequency 1 / 60Hz
  • Primary / Secondary Voltage 55/27.5kV
  • Self-capacity / Load Capacity Maximum 15MVA / 30MVA
  • Applied Standards KRS PW 0002 Korean Railway Standards (KS IEC 60076)
  • Usage Environment Ambient temperature maximum 40℃, minimum -25℃ / altitude 1,000m / indoor, outdoor
  • Insulation Performance U,V 200kV BIL
  • Efficiency 99% or higher
  • Temperature Increase Winding 65K, insulating oil 60K
  • Short Circuit Strength 25 times the rating / maximum capacity 30MVA passed the Korea Electrotechnology Research Institute (KERI) test / Report no. 20TB200189
External Dimensions (Standard Technical Specifications of the Korea National Railway)
Self-capacity / Load Capacity Length (mm) Width (mm) Height (mm)
5MVA / 10MVA 2,700 3,250 3,750
7.5MVA / 15MVA 2,690 3,550 3,750
10MVA / 20MVA 3,000 3,700 3,900
15MVA / 30MVA 3,150 4,300 3,950
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