Numerical Voltage Relays provide high-speed, precise protection by continuously monitoring voltage for anomalies like Over-voltage (59), Under-voltage (27) ensuring rapid fault isolation and safeguarding critical grid assets. As microprocessor-based draw-out units employ fast digital signal processing and advanced algorithms to quickly analyze fault magnitude and duration, ensuring that the circuit breaker isolates only the damaged section of the electrical system.
numrAL VPR11 is microcontroller-based Single-phase Voltage relay with draw-out enclosure. It is suitable for Over Voltage + Under Voltage protection in LV & MV power distribution systems. numrAL VPR11 numerical can also provide protection of AC circuits, Capacitors, Generators, Motors and even in automatic changeover schemes.
numrAL VPR21 numerical Relay is designed for 3-phase Over + Under Voltage and Over + Under frequency protection in low-voltage (LV) and medium-voltage (MV) power distribution systems. Its applications extend to protecting AC circuits, capacitors, generators, and motors, and it can be seamlessly integrated into automatic changeover schemes.
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