S3CD
Double Side Break Disconnector up to 550 kV
The S3CD is a double side break disconnector on which the center insulator rotates to open and close the switch. It is particularly suited for applications in which low vertical clearance prohibits the use of other disconnectors. The S3CD is a rugged performer in adverse operating conditions and is always stable in the close position during short circuits.
- High performance with proven reliability
- Reduced phase spacing requirements
- Built-in or retro-fitted earthing switches
- Built-in arc restrictor available
- Virtually maintenance free
- Easy start-up and commissioning
- Designed for high current performance up to 6000 A
S3CD
Double Side Break Disconnector up to 550 kV
The S3CD is a double side break disconnector on which the center insulator rotates to open and close the switch. It is particularly suited for applications in which low vertical clearance prohibits the use of other disconnectors. The S3CD is a rugged performer in adverse operating conditions and is always stable in the close position during short circuits.
- High performance with proven reliability
- Reduced phase spacing requirements
- Built-in or retro-fitted earthing switches
- Built-in arc restrictor available
- Virtually maintenance free
- Easy start-up and commissioning
- Designed for high current performance up to 6000 A
- Rugged performer in adverse conditions such as high winds and heavy ice, and is stable in the close position during short circuits
- Particularly suited for applications in which low vertical clearance prohibits the use of other disconnectors
- Blades are extra heavy, one piece, tubular aluminium with replaceable silver plated copper contacts at each end
- Galvanized structural steel channel base supports the insulators and live parts, providing high strength and rigid design
- Center insulator stack rotates on weather sealed, greaseless rotor bearings
Specifications
Technical Data (IEC)
| Rated Voltage | Rated Current A/ Short time current kA** | BIL kV | A mm | B mm | C mm | D mm | E mm |
| 145 kV | 3150/63 A | 650 | 1800 | 1816 | 2000 | 150 | |
| 170 kV | 3150/63 A | 750 | 2000 | 2038 | 2200 | 170 | |
| 245R kV | 3150/63 A | 950 | 2400 | 2472 | 2600 | 220 | 270 |
| 245 kV | 3150/63 A | 1050 | 2800 | 2672 | 3000 | 220 | 270 |
| 300 kV | 3150/63 A | 1050 | 3200 | 3022 | 3400 | 220 | 270 |
| 362 kV | 3150/63 A | 1175 | 3800 | 3338 | 4050 | 270 | 340 |
| 420 kV | 3150/63 A | 1425 | 4200 | 3788 | 4450 | 270 | 340 |
| 550 kV | 3150/63 A | 1550 | 5000 | 4463 | 5250 | 270 | 340 |
Drawings
