F9UYP5555AAF021

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F9UYP5555AAF021 Application Field and Working Principle

F9UYP5555AAF021 refers to an advanced three phase arc protector, developed to be used as an Arc Fault Detection Device (AFDD). This device is specifically designed to detect electrical current arcs and prevent fires caused by these arcs in installations with strong electrical loads. This article covers the application field and working principle of F9UYP5555AAF021.

Application Field

F9UYP5555AAF021 is mainly used in three phase AC power systems, for establishing arc protection normally in entertainment venues, sports fields, stadiums, shopping malls, school buildings and other large commercial buildings and industrial loads. The three-phase arc protection device uses a multi-function temperature electromagnetic contactor as its control power switch. Design for fast protection speed and high accuracy of tripping. It also features a strong anti-interference function and wide temperature range and long life of service.

Working Principle

The working principle of F9UYP5555AAF021 is based on the principle of electromagnetic induction. It uses three sensors—each placed at one phase of the three phase power system—to monitor and detect arcs. The sensors record the common mode current—generated due to the resonance between the power lines and the arc—and then compares the current with the pre-set alarm threshold, in order to detect potential arcs. When the current value exceeds the preset alarm threshold, the device will disconnect the circuit in order to prevent a potential fire. The cut-off time for the device is around 0.1S.

In addition to the three common mode current sensors, F9UYP5555AAF021 features an overvoltage protection coil, an undervoltage protection coil, a thermal relay and an automatic short circuit protection. These components are all used in order to ensure a safe and reliable operation of the device. The working voltage range this device supports is from 220V to 420V.

The device further features a self-test function. This function checks the integrity of the device\'s components at start up and during normal operation. In case of any failures, the self test function will give out a warning. The device also has a built-in intelligent self-inspection system that can monitor the system\'s performance at all times.

F9UYP5555AAF021 is capable of working in a variety of environment conditions without any need for special protection devices. It can operate in temperatures ranging from -10 to 50°C and at altitudes up to 2000 meters. It is compatible with TN-S, TT and IT systems.

In conclusion, F9UYP5555AAF021 is an advanced three phase arc protection device, designed to prevent fires caused by arcs in three phase AC power systems. It features a multi-function temperature electromagnetic contactor as its control power switch and has a working voltage range from 220V to 420V. The device is designed to work in a variety of environments, without the need for special protection devices, and features a self-test and intelligent self-inspection system.

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