Switchgear
Eco-Friendly EGIS: Certified Safety for Digital Substations
25.8kV Environment-Friendly
Gas Insulated Switchgear
The 25.8 kV EGIS is installed at KEPCO substations as an eco-friendly switchgear applying dry air, and is a product with safety secured via arc-suppression certification, used as a switchgear at digital substations with mounted IED based on IEC 61850.
Enhancing Reliability & Efficiency in Switchgear Operations
Interrupter and operational machinery apply a permanent magnetic actuator (PMA) mechanism with over 10,000 operational cycles guaranteed [Maintenance Free]
Enables access to internal components and easy management, unlike the sulfur hexafluoride(SF6) gas-insulated switchgear
Improves operational reliability through mechanical and electrical secondary interlocking functions between the circuit breaker, disconnecter, and earthing switch (CB, DS, ES)
Useful for additional construction following future increases in substation capacity
Insulation reliability
Category
Rating
Rated voltage
25.8 kV
Nominal voltage
22.9kV
Rated frequency
60Hz
Phase to earth, CB
across open contact
60kV
DS pole to pole
66kV
Phase to ground
/ between poles
150kV
DS pole to pole
165kV
Rated short time current
25kA, rms
Rated current
2,000A
Main bus and
2,000A circuit
630A
Power distribution line
and 630A circuit
2.0 bar.G at 20℃
Rated dry-air gas pressure
DC 125V, AC 220V
Control and operational
circuit voltage
600×2,660×2,700
(W×D×H, mm)
Shock wave withstand voltage
Power frequency withstand voltage