I BUSBAR PROTECTION RELAY AFR SERIES ARC PROTECTION RELAY i Introduction Fast relay AFR series arc protection relay detects electrical arcs in medium and low-voltage equipment, isolating power to minimize the risk of electrical fires. It works to prevent arcing faults in busbars, metal-clad switchgear, and cable boxes. Arc flash relays can connect with remote light sensors to detect arc flashes and send a trip signal to cut off power. They can be used for stand-alone devices or embedded in complex switchgear layouts. • Accurate and real-time monitoring arc signals. • High temperatures and humidity resistance. • Fast response, relay tripping in less than 10 ms. • Equipped with RS485 communication interface. • Support ST visible light and ST ultraviolet sensor access. • Complete SOE records, all information power-off retention. • Support automatic reclosing function to improve system availability. • Capacitor cabinet. • High voltage switchgear. • Electric power substation. • Large municipal engineering project. • Medium and low voltage switchgear. • Thermal power plant electrical section switchgear. • Wind turbine & Wind farm and photovoltaic station switchgear. Switchgear combustion Busbar combustion Cable combustion Total clearing time= 7ms + (35~ Technology of Electrical Automatic

I BUSBAR PROTECTION RELAY AFR-M ARC FLASH PROTECTION RELAY i Introduction AFR-M busbar ARC flash protection relay represents a cost-effective and highly efficient solution designed to mitigate arc-fault damage. AFR-M detects the emitted light from an arc flash and promptly triggers tripping relay in both low-voltage (LV) and medium-voltage (MV) electrical networks. Equipped with up to 48 ultraviolet optical sensors, the relay operates on preset programs, ensuring optimal protection for the secure operation of bus circuits. • Arc light and current dual criterion. • Total 4*3-phase current signal...

AFR-S ARC FLASH PROTECTION RELAY Introduction AFR-S ARC flash protection relay is a cost-effective solution for minimizing arc-flash damage in low-voltage (LV) or medium-voltage (MV) feeder circuits, commonly recognized as a feeder protection relay. Outfitted with 3 arc sensors, can actively monitors arc faults occurring in cable connections and busbars within the cabinet. AFR-S features a comprehensive range of functions, including threestage phase-to-phase overcurrent protection, overload protection, zerosequence overcurrent protection, arc flash protection, and hightemperature & over-temperature...

I BUSBAR PROTECTION RELAY AFR-3S ARC FLASH PROTECTION RELAY i Introduction AFR-3S Arc flash protection relays serve as crucial components for detecting arc faults in electrical systems, ensuring the protection of equipment and personnel. AFR-3 adopts advanced monitoring of parameters such as current, voltage, and electric power to swiftly identify arcs. Designed for application in medium and high-voltage power distribution systems, control cabinets, transformers, generators, motors, and various electrical equipment, the AFR-3 Arc flash relay operates based on a dual-criteria principle. Combining...

I BUSBAR PROTECTION RELAY ■ Introduction AFR-4 is a versatile and independently operating device for bay based protection. It supports 4-channels arc signal detection and can configuration multiple arc tripping modes, ensuring accurate and fast fault isolation. With a fast relay output speed up to 5ms, AFR-4 can minimize or completely eliminate arc flash damage, improving system safety and reliability. It can be used in various arc protection applications in low or medium voltage power distribution system. AFR-4 also provides flash warning and dual criteria tripping mechanism (arc detection +...

SCM-OPUV (UV light detection) • Detection angle: 0-240° • Default trigger threshold: 5mw/ cm2 SCM-OPVL1 (Visible light detection) • Detection angle: 0-240° SCM-OPVL2 (Visible light detection) SCM-BTM (Busbar temperature monitoring) • Current: 5 A • Connectivity Type: Wireless SCM-TEV (Partial discharge sensor) • Bandwidth: 40 MHz - 80 MHz • Measurement frequency range: 3M-100MHz • Communication method: RS485, MODBUS-RTU Technology of Electrical Automatic