Feature of AFR3-08 Arc Fault Protection
- Arc fault detection and location: When an arc fault occurs, the AFR3-08 Arc Fault Protection relay can quickly capture the optical signal from the fiber optic sensor and accurately determine the location of the fault, with a location accuracy of up to the compartment level.
- Data storage and display: The relay stores and displays the detected arc fault data, providing a basis for subsequent analysis and troubleshooting.
- Wide range of applications: AFR3-08 Arc Fault Protection can be applied to various switchgear with voltage levels of 0.4-35 kV, including nuclear power facilities.
- Flexible power supply mode: Supports multiple power supply modes of DC and AC to adapt to different on-site environments.
- Low power consumption design: In various working modes, the power consumption does not exceed 1W, which is energy-saving and environmentally friendly.
How does AFR3-08 Arc Fault Protection work?
The AFR3-08 Arc Fault Protection relay uses fiber optic sensors to monitor the electromagnetic environment in the switch cabinet in real-time. Once an arc fault occurs, the sensor will generate a specific optical signal. After receiving the signal, DUGA-O processes it internally to determine the fault location and trigger corresponding protection measures.
Specification of AFR3-08 Arc Fault Protection
| Functional description | Significance |
| Resistance to the external environment | Operating temperature from -40ºC to +55ºC Humidity up to 98% IP54 protection class for front panel |
| Nutritional characteristics | Voltage range from 66 V to 264 V Permissible power interruption up to 2.4 seconds Ready time after switching on 0.25 s |
| Number of input signals | 4 |
| Number of output signals | 5 |
| Performed functions | Sensor signal to protect rail Alarm Self-diagnosis |
| Work Enviroment | Temperature range: -40℃ to +55℃, suitable for unheated environments. Humidity: Relative humidity up to 98% (25℃), resistant to high humidity environments. Atmospheric pressure: 73.3 kPa to 106.7 kPa, suitable for different altitudes. Altitude: Up to 2000 meters. Environmental requirements: Non-explosive environment, no corrosive gases, avoid direct exposure to sunlight. Earthquake resistance: Meets GOST 17516.1-90 standard and can withstand earthquakes of magnitude MSK-64. Protection level: Meets the requirements of federal regulations PNAE G-01-011-97 ZN in the field of atomic energy use. |
