AFR-S Power Generation Arc Flash Protection Relay For MV Power Distribution Applications
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AFR-S Power Generation Arc Flash Protection Relay For MV Power Distribution Applications
Arc protection relays are mainly used to detect arc faults in electrical systems and protect equipment and personnel in electrical systems from arc faults. Arc protection relays can detect arcs by monitoring parameters such as current, voltage, and electric power, and quickly disconnect the power supply before an electrical fire occurs, thereby reducing the risk of fire.
Arc protection relays are usually used in medium and high voltage power distribution systems, control cabinets, transformers, generators, motors and other electrical equipment. They adopt the dual-criteria principle of arc light detection and overcurrent detection, and have the characteristics of fast protection action and high reliability.
FEATURES
l Complete digital design, simple principle;
l Strong electrical performance;
l Comprehensive record of fault information;
l Double criterion of over-current and arc, high reliability;
l Optical fiber transmits, strong electromagnetic interference resistance;
l Programmable logic of trip exit;
l Fast exit tripping, short total fault clearing time.
APPLICATIONS
l Reduce the harm of arc light to human body;
l Reduce damage to equipment caused by arc short-circuit faults;
l Avoid transformer damage caused by bus failure;
l Protect the dc system in the station;
l Ensure the stable operation of power substations;
l Thermal power plant electrical section switchgear;
l Wind farm and photovoltaic station switchgear;
l Large municipal engineering project;
-. Power supply
AC/DC85 ~ 265V
-. Consumption
≤ 8W
-. Current input
Current rated : | 5A/1A |
Measurement range: | protection current: 0~20 |
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 |
-. 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: | GB/T 14598.14-2010. level-4 |
Fast transient dry resistance test: | GB/T 14598.10-2007. level-A |
1mhz burst interference test: | GB/T 14598.13-2008. level-3 |
Surge immunity test: | GB/T 14598.9-2010.level-3 |
Conducted disturbance immunity test: | GB/T 14598.18-2007 |
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