Wholly dedicated
to industrial transformers,
we deliver perfect solutions
with masterful expertise.
Rooted in tradition, expertise, and trust, Choil Sungup Electric is
your win-win power solutions partner, building a shared future of growth.
Founded in 1972, a 54-year tradition of integrity and expertise, building the future together as your partner.
Choil Sungup Electric competes with a single focus on transformers.
2025 revenue of ₩34.3 billion, exceeding ₩30 billion for three consecutive years.
Achieved our highest credit rating of A0 in 2026.
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Solar transformers are used to connect generated power to power grid or to covert voltage for supply to electrical loads. Solar tr...
Cast Resin Transformer is a dry-type transformer that uses epoxy resin as its insulation method. Unlike general oil-immersed trans...
Power Transformers are used in major power systems such as power plants, substation, transmission lines to convert voltage and dis...
An Oil-Immersed Transformer is a distribution transformer that immerses the windings and core insulating ail (transformer oil) to ...
Pad-Mounted Transformers are installed on the ground in order to convert voltage in distribution power networks.
Pad-Mounted Tran...
Pole-Mounted Transformers are installed on utility pole and covert from high voltage of power grid to low voltage for home and com...
The Railway Autotransformer is designed for electric railway applications. It helps stabilize the power supply by minimizing volta...
The Harmonic Transformer is a specially designed transformer that combines the functions of both a transformer and a harmonic filt...
A Seismic Cast Resin Transformer is specially designed to maintain structural integrity and operational stability during earthqua...
