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Qualified
Protection Panels
“Largest number of qualified protection panels”
for KEPCO’s stable power supply and distribution
154kV Relay Panel
  • Transmission line protection panel
    • - Protection panel
    • - Protection IED panel
  • Short-distance transmission line protection panel
    • - Protection panel
    • - Protection IED panel
    • - 1.5CB protection panel
    • - 1.5CB IED Panel
  • Bus protection panel
    • - Protection panel
    • - Protection IED panel
  • Transformers protection panel
    • - Protection panel
    • - Protection IED panel
345kV Relay Panel
  • Transformer protection panel
  • Transmission line protection panel
  • Fault detection panel on underground session for transmission line
  • Breaker failure protection panel
765kV Relay Panel
  • Bus protection panel
  • Transformer protection panel
  • Transmission line protection panel
  • Breaker failure protection panel

Seondo Electric is the ONLY company that provides all of 154kV, 345kV, and 765kV protection panels.

Certifications for
Nuclear Power Plants
Trustworthy partner that has obtained essential quality certifications for power equipment for nuclear power plants.
KEPIC
Purpose
To ensure the safety and reliability of power equipment. (especially nuclear power plants)
Organization
The Korea Electric Power Association evaluates and manages its qualifications.
Certification Scope
Manufacturing of electrical grade-1 switchgear and motor control centers.
Q-Class
Purpose
To ensure the nuclear engineering capabilities that require strict technical skills and safety.
Organization
The Korea Hydro & Nuclear Power awards the highest-level certification.
Certification Scope
Certification of suppliers of nuclear auxiliary equipment and materials.

Supplied medium-voltage switchgears
to Shin-Wolsong #1, #2(2009-2012) and Saeul #3, #4 (2018-2023)

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