OHL automation system FD-DD-25
Benefits
- Line sectioning system.
- Detects the direction of the PtG faults.
- Blocking the disconnector control in the presence of voltage and/or current
- Remote control of grid sections
- Integration into the user’s SCADA system
- Battery life – 24 hours (at least 50 cycles of switching on/off the disconnector)
- Power-on lock when the earthing switch is on
Outdoor Gang Isolator Switch/Air Breaking Isolationg Switch Disconnector.
The three-pole disconnector FD-DD-25 is used for remote sectioning of overhead power lines with a voltage of 6-10 kV and detection of stable and unstable emergency modes, including any types of ground faults.
Its integration into the automation system will ensure the creation of an effective and economical line sectioning system. Fast switching of sections of the electrical circuit is performed by means of an automated drive, which is installed in the disconnector control cabinet. Information about the disconnector status is displayed on the dispatcher's console and directly on the FD-DD-25 control unit.
Technical characteristic
| PARAMETER | VALUE |
|---|---|
| Rated voltage (U) | 10 kV |
| Maximum operating voltage (U) | 12 kV |
| Rated current (I) | 400 A/630 A |
| Rated short-term sustained current (thermal resistance) (I tr.) | 10 kA when the action time for the main knives is within 3 sec. |
| The highest peak of the rated short-term current (electrodynamic resistance) (I ed.) | 25 kA |
| Integration with SCADA systems | Connection to SCADA system via the IEC-104 protocol |
| Remote communication | GSM/GPRS modem |
| Remote control (for field config) | Bluetooth BLE (2,4 GHz) |
| Temperature range | Operating from – 40°C to +60°C |
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