The REU615 is a dedicated voltage protection measurement and control device available in two standard configurations. Standard Configuration A can be applied to voltage - and frequency-based protection schemes in power and industrial distribution networks with distributed sources. Standard Configuration B can be used in automatic voltage regulation applications with on-load regulator transformers.
The REU615 is a voltage protection measurement and control device under the ABB brand for utility and industrial distribution systems, including grids with distributed generation. It is available in two standard configurations, Standard configuration A for voltage and frequency based protection schemes in power and industrial distribution networks with distributed power sources, and standard configuration B for automatic voltage regulation applications with on-load regulator transformers. These two standard configurations also come with typical functions such as circuit breaker control, measurement, and condition monitoring.
In addition, the REU615 features complete protection functions such as overfrequency, low frequency, overvoltage, low voltage, zero sequence overvoltage, positive sequence undervoltage, negative sequence overvoltage, frequency protection, as well as low cycle load shedding and load recovery. These capabilities enable the REU615 to effectively protect the stable operation of the power system and improve system safety and reliability.
Overall, the REU615 is a powerful, high-performance voltage protection measurement and control device for power systems of all sizes and types, providing comprehensive protection and control capabilities to ensure safe and stable power system operation.
The REU615 Voltage Protection measurement and control device is designed to protect high-voltage systems. It mainly includes the following functions:
REU615 device power supply positive and negative: connected to the DC positive and negative terminals, generally connected to the positive 220 volts, negative 220 volts. The line number is marked with positive KM, negative KM, this is from the small bus.
Opening amount: according to the design needs to connect. For example, the field needs to have the opening and closing instructions, here the opening amount will be connected to the auxiliary contact of the circuit breaker, generally open means closing, normally closed means opening, the line number should be marked according to the drawing.
REU615 out: Generally connected to the circuit breaker coil, out of the device is the external output switch signal, the common point is to let the coil electrical action of the switch signal or power reset switch signal.
REU615 Current line: Generally marked with line numbers A411, B411, C411, some projects will use other line numbers to explain.
The REU615 is a voltage protection measure and control device with a variety of protection features, including but not limited to:
Overload protection: When the current exceeds a set overload current threshold, the REU615 triggers a protective action to disconnect the appropriate circuit to prevent overheating or damage to the device.
Short Circuit protection: In the event of a short circuit failure, the REU615 can quickly detect and shut off the circuit to prevent too much current from causing damage to the device.
Grounding protection: The REU615 detects a device's ground resistance. When the ground resistance is lower than a specified threshold, the REU615 detects a ground fault and triggers protection.
Undervoltage protection: When the voltage falls below a set threshold, the REU615 can trigger a protective action to prevent the device from working properly or being damaged due to low voltage.
Phase Loss protection: When a phase loss fault occurs in the circuit, the REU615 can detect and disconnect the circuit to prevent device damage due to phase loss.
Overall, the REU615 can effectively improve the safety and stability of the power system through its powerful protection function.
