AFR-3S MV HV Switchgear Arc Flash Relay with 3 Channels
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AFR-3S Arc flash relays are mainly used to detect arc faults in electrical systems and protect equipment and personnel in electrical systems from arc faults. The arc flash protection relay 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.
AFR-3S Arc flash relay is 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.
Specification
| Working power supply | |
| Power supply | AC/DC 85~265V, DC24/48V customized |
| Power consumption | Normal operation ≤8W; device action ≤10W |
| Current | |
| Rated current input | 5A, Frequency: 50HZ/60HZ |
| Rated current output | 2.5mA, CT ratio:2000:1 |
| Measuring range | Protection current: 0.06~10In |
| Linear range | 0~40A (Impedance: 20Ω) |
| CT measuring accuracy | 0.5 |
| Power consumption | ≤0.5VA |
| Electrical parameter error | |
| Protection current accuracy | ≤±4% |
| Zero sequence current accuracy | ≤±4% |
| Arc signal input | |
| Number of channels | 1-3 channels |
| Sensor type | ST optical fiber type |
| Detection light type | Visible/UV optional |
| Temperature measurement signal input (optional) | |
| Number of channels | 3-12 Channels |
| Sensor type | Passive/Active/Micro |
| Signal acquisition type | 433M |
| Partial discharge signal input (optional) | |
| Channels number | 1 channel |
| Sensor type | Wire transmission |
| Detection light type | Geoelectric wave/Ultrasonic wave/Noise/UHF (optional) |
| Smoke sensor input (optional) | |
| Channels number | 1 way |
| Sensor type | External wired smoke sensor |
| Fire extinguishing sensor (optional) | |
| Injection time | ≤12S |
| Start mode | Electric start & thermal start |
| Protect space | ≤3m3 |
| Component type | Aerosol fire extinguishing unit |
| Action time | |
| Pure arc trip | ≤10ms |
| Current+arc trip | ≤20ms |
| Alarm action time | ≤40ms |
| Relay input | |
| Quantity | 5DI, NO; Dry contact |
| Max. switching voltage | 35V |
| Max. switching current | 50mA |
| Action time | Max. 18μs |
| Relay output | |
| Channels number | 4 Channels (optional 6 channels) |
| Load capacity | Load capacity: 10A@250Vac/ 12A@24Vdc. Max. switching current: 10 A (ac)/ 12A(dc). Max. switching voltage: 277Vac/ 300Vdc |
| Max. switching current | |
| Max. switching voltage | |
| Communication Interface | |
| Communication Interface | 1 Channel RS485, photoelectric isolation, with lightning protection |
| Baud rate | 4800, 9600bps (default 9600) |
| Communication protocol | Modbus RTU |
| Ethernet communication | |
| Communication Interface | 1 Channel |
| Network parameters | 10M/100M adaptive |
| Communication protocol | IEC60870-5-103 (NZ103) |
| Environment | |
| Working temperature | -10 ~ +55°C |
| Storage temperature | -25 ~ +70°C |
| Humidity | 5~95%RH |
| Atmospheric pressure | 60kPa~106kPa |
| Electromagnetic compatibility | |
| 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 |
| Electrical disturbance test | GB/T 14598.9-2010, level-3 |
| Surge immunity test | GB/T 14598.18-2007 |
| Conducted disturbance test | GB/T 14598.17-2005 ,22-6 |
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