| | · | Compactness and high reliable breaking capability by adoption of vacuum interrupter | · | High insulation and reliability by metal enclosure filled with SF6 gas | · | Stability improvement by conductive and operating parts installation inside of the enclosure | · | Remarkable installation area reduction by compact design | · | Certificated by the newly revised IEC standards | · | Adoption 3-position switch and 2-position switch | · | Easy transport, installation and maintenance during GIS working | · | Three phase common enclosure type | | | | | Item | 25.8kV | 36kV | Model | WIB 25.8 | WIB 36 | Rated Voltage (kV rms) | 25.8 | 36 | Rated Short-circuit Breaking Current (kA rms) | 25 | 25 | Rated Current (A rms) | 600 / 2000 | 630 / 2000 | Rated Frequency (Hz) | 60 | Rated Power Frequency Withstand Voltage (kV rms) | 70 | Rated Lightning Impulse Withstand Voltage (kV peak) | 150 | 175 | Rated Switching Impulse Withstand Voltage (kV peak) | - | - | Rated Gas Pressure (Mpa) | 0.12 | 0.23 | | | | | WIB 25.8 / WIB 36 | · | Circuit Breaker | | - Vacuum Interrupter by Motor spring operation | · | Combined-Disconnector and Earthing Switch | | - Motor spring operation | · | Disconnector Switch | | - Motor spring operation | | |