Semi-pantograph disconnector DSSP
Maximum reliability and minimal maintenance
The DSSP disconnectors are available up to 245 kV, 4000 A and 50 kA. The semi-pantograph disconnector is suitable for substations with a small installation area and is used when busbars are arranged at two different levels. It can be installed in line or perpendicular with the overhead bus and applicable for both flexible and rigid busbars.
Main features
- Minimized contact resistance
- Main current path open structure for superior thermal performance and easy for rating upgrading
- Reliable electrical contact
- Reliable mechanical joints with anti-corrosion
- Ice breaking capacity
Why Hitachi Energy?
- Worldwide experience
- Maximum reliability and minimal maintenance
- Energy efficient solution
- Easy and quick erection
- Reliable and smooth operation
- Suitable for wide range of environmental conditions
Brief performance data
| Rated voltage (kV) | 123 | 145 | 245 |
|---|---|---|---|
| Rated current (A) | up to 4000 | ||
| Short time withstand current (kA) | up to 50 | ||
| Power frequency withstand voltage | |||
| · against earth | 230 | 275 | 460 |
| · across isolating distance | 265 | 315 | 530 |
| Lightning impulse withstand voltage | |||
| · against earth | 550 | 650 | 1050 |
| · across isolating distance | 630 | 750 | 1200 |
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