LUR220A

The LUR220A is a current and voltage monitoring relay, which can be used to detect and compare the mains and other power system loads. It provides current and voltage monitoring, alarm points, adjustable trip times and relay output points with two relays. It can be used to monitor AC current and voltage as well as DC current and voltage, and can be used in a wide range of applications, from industrial factories to commercial buildings.

The LUR220A is designed to be a simple and cost-effective solution for current and voltage monitoring. Its simple design makes it easy to install and configure. It uses four isolated analog inputs that can support either AC or DC current and voltage and two relay outputs. The two relay outputs can be used to control external devices for operation, alarm, or trip.

The working principle of the LUR220A is based on a comparison of measured values with external setpoints. When the measured value of either AC or DC current or voltage exceeds its setpoint, the relay will trip and switch its associated output. This can be used to shut down or isolate a load in case of an overload or an underload condition. The device also provides adjustable trip times and adjustable hysteresis for both current and voltage monitoring. The device can be programmed via potentiometers or through RS-485 communication. In addition, it also offers an LED indicator for visual indication of the device status.

The LUR220A can be used in a variety of applications such as industrial process control, temperature control, motor control, and process automation. It can also be used for monitoring AC and DC mains and loads in commercial and residential buildings. Its simple design and wide range of features make it a versatile and reliable monitoring solution.

In conclusion, the LUR220A is a reliable and highly versatile current and voltage monitoring relay that is designed for a wide range of industrial and commercial applications. It provides adjustable trip times and adjustable hysteresis for both current and voltage monitoring. Its two relay outputs can be used for alarm or trip functions. It can be programmed via potentiometers or through RS-485 communication. It is an ideal solution for monitoring and controlling the power system of a building or an industrial plant.