The main frame is welded steel structure and the contacts are mounted on epoxy insulators. The upper fixed contact houses the arc quenching chamber and the connection terminal. The switch is also equipped with spring-assisted mechanism due to which constant speed is achieved during opening and closing operation. The switch is also provided with stored energy tripping device.
Technical Data | Standard Accessories | Available Combinations | ||
---|---|---|---|---|
Parameter | Description 11KV | Description 22KV | ||
Designation | Indoor PCESAIR 126325 | Indoor PCESAIR 246325 | Auxiliary Switch 1NO + 1 NC or 2NO + 2 NC or 4 NO + 4 NC |
Load Break Switch + Auxiliary Switch |
Type of Break | Air Break | Air Break | ||
Rated Voltage | 12KV | 24KV | Load Break Switch + Auxiliary Switch + Earth Switch | |
Rated Insulation Voltage | 28KV RMS / 75KV PEAK | 50KV RMS / 125KV PEAK | ||
Rated Current | 630A | 630A | Load Break Switch + Auxiliary Switch + Fuse Trip Mech | |
Rated Frequency | 50Hz | 50Hz | ||
No.of Phases | 3 | 3 | Load Break Switch + Auxiliary Switch + Fuse Trip Mech + Shunt Trip | |
No.of Breaks/Pole | Single | Single | ||
Rated Short Circuit Withstand Current | 25KA | 25KA | ||
Rated Short Circuit Peak Withstand Current | 63KA | 63KA | ||
Rated Short Circuit Making Capacity | 20KA RMS / 50KA PEAK | 20KA RMS / 50KA PEAK | Load Break Switch + Auxiliary Switch + Fuse Trip Mech + Shunt Trip + Earth Switch | |
Applicable Standard | IS – 9920 | IS – 9920 |