Compact Air Insulated Switchgear
C-AIS is a medium voltage product applied to secondary distribution systems up to 24 kV of rated voltage. It requires less space for installation and will be cost efficient due to the reduced dimension and weight.
C-AIS is a medium voltage product applied to secondary distribution systems up to 24 kV of rated voltage. It requires less space for installation and will be cost efficient due to the reduced dimension and weight.
Reliability
- Type testing is completed according to IEC62271-200
- Internal arc proofed 21kA/1sec A-FLR
- Earthing of both the entire switchboard structure and the metal division between compartments
- Mechanical interlocks assure exact operation sequence
- Protection classes: PI (insulating partition)
- Loss of service continuity classes: LSC2A (LSC1 for bus riser)
- IP3X protection degree on the external housing
Optimization
- Reduced dimension and weight
- Less space requirement for switchboard installation
- Easy integration in factory-built outdoor substations
- Adapted solutions to cable connection
- Modular units containing fixed and withdrawable metal-enclosed switchgear, using vacuum
Simplicity
- Simplified switchboard busbar design
- Mimic diagram in front of the switchboard using simple and functional devices
Specification
| Rating | Specification | |||
| Rated voltage | kV | 12 | 17.5 | 24 |
| Rated frequency | Hz | 50/60 | ||
| Power frequency withstand voltage (Insulation/Isolation) |
kV, rms (1min) | 28 / 32 | 38 / 45 | 50 / 60 |
| Lightning impulse withstand voltage (Insulation/Isolation) |
kV, peak ( 1.2 X 50 ㎲) |
75 / 85 | 95 / 110 | 125 / 145 |
| Rated frequency | A | 630 | ||
| Short-time withstand current | kA/s | 16kA/3s, 21kA/3s, 25kA/1s | ||
| Making capacity (50Hz) | kA | 40 / 50 / 54.6 | ||
| Internal arc classification | kA/1s | 21 (A-FLR): Option | ||