Features of AFR-M- Arc Protection Relay
- Arc-flash mitigation strategies: Light-Sensing Only; Light Flash, Supervised by Current; Light Flash, Supervised by Pressure(Optional).
- Optional extra monitor functions by RS-485 connection. You can customize Bus temperature monitoring (wireless) sensors, Partial Discharge sensors (TEV), and Smoke sensors.
- Optional neighboring AFR-M to expand maximum detect quantities of feeder loop.
- Support OEM and add customized program: For special VCB control and protection logic; Localized language HMI.
- Panel mounting design, rugged Aluminum Housing.
- Integrate information displayed on the large LCD screen.
- Provide a total 4*3-phase current signal input.
- Single unit max 48pcs opt-sensor connected.
- Less than 10 ms operation time (from arc flash to relay trip).
- 16* passive DI point, indicates CB status.
- 9* trip contacts, free to configure and protect trip logic.
- 1* Ethernet port support IEC60870-5-103 communication.
- Independent trip act and alarm act relay.
Specification of AFR-M- Arc Protection Relay
Power supply: AC/DC85 ~ 265V; Consumption: ≤ 8W
-. Current input
| Current rated : | 5A/1A |
| Measurement range: | protection current: 0~20In |
| Consumption: | ≤ 5VA |
-. Electrical parameters tolerance
| Protection current: | ≤ 2% |
| Protection frequency: | 0.1Hz |
-. Arc signal input
| Channels number: | 12-48 channels (optional) |
| Sensor type: | optical fiber |
| Detect light type: | Visible light/UV light (optional) |
-. Relay output
| Channels number: | 9 channels |
| Operating Voltage: | AC250V/8A |
| Input method: | Passive contact |
| Isolation method: | Photoelectric isolation, isolation voltage 2500V |
-.Digital input
| Channels number: | 16 channels |
| Operating Voltage: | 220Vdc |
| Input method: | Wet contact |
| Isolation method: | Photoelectric isolation, isolation voltage 2500V |
Notes: Optional passive node (confirm before order)
-. Action time tolerance
Pure arc protection: ≤10ms
Double criterion protection: ≤20ms
-. RS485 communication
| Interface: | RS485 (one standard, two optional) |
| Isolation type: | photoelectric isolation, lightning protection |
| Baud rate: | 9600bps |
| Protocol: | Modbus |
-. Ethernet communication
| Interface: | 2-Way Ethernet optional |
| Network parameters: | 10M/100M adaptive |
| Default IP: | 192.168.12.2/192.168.13.2 |
| Standard: | IEC60870-5-103 |
-. Environment
| Working environment: | -10 ~ 55°C/ < 93% RH (Non-condensing) |
| Storage environment: | -30 ~ 70°C/ < 70% RH (Non-condensing) |
| Relative humidity: | 5%~ 95% |
| Atmospheric pressure: | 60kPa ~ 106kPa |
-. Electromagnetic compatibility
| Item | Standard |
| Electrostatic discharge test: | IEC 60255-22-2:2008. level-4 |
| Fast transient dry resistance test: | IEC 60255-22-4:2008. level-A |
| 1mhz burst interference test: | IEC 60255-22-1-2007. level-3 |
| Electrical disturbance test: | IEC 60255-22-2:2008.level-3 |
| Surge immunity test: | IEC 60255-22-5:2008 |
Applications of AFR-M- Arc Protection Relay
- Reduce the harm of arc light to the human body;
- Reduce damage to equipment caused by arc short-circuit faults;
- Avoid transformer damage caused by bus failure;
- Protect the DC system in the station;
- Ensure the stable operation of power substations;
- Thermal power plant electrical section switchgear;
- Wind farm and photovoltaic station switchgear;
- Large municipal engineering project;
Dimensions of AFR-M- Arc Protection Relay
