Medium Voltage Cabinets Protection Relay

The HVEX Medium Voltage Cabinets Protection Relay is an essential device to ensure the safety, reliability, and continuity of electrical systems. Designed to detect and respond to critical situations such as short circuits, overloads, and ground faults, the relay sends trip commands to circuit breakers and disconnecting devices, quickly isolating the affected part of the system to prevent further damage. With advanced feeder and transformer protection functions, the device ensures stable and efficient operation of distribution lines and medium voltage switchgear. It also offers programmable interlocking, real-time monitoring, and local/remote communication, enabling greater control and integration with automation and supervisory systems. Key features of the HVEX Relay include: • ANSI protection functions such as overcurrent, ground fault, overvoltage, undervoltage, underfrequency, automatic restoration, and open/close supervision. • Accurate measurements of voltage, current, frequency, power, and power factor, ideal for continuous monitoring. • High-capacity event and log recording, ensuring a detailed history for fault analysis. • Compatibility with IEC 60870-5-103 and Modbus-RTU protocols for SCADA system integration. Strictly compliant with major international standards – IEC 60255, IEC 60947, IEC 60044/61869, IEC 60870-5-103, NBR IEC 60529, and IEEE C37 – the HVEX Protection Relay is the ideal solution for utilities, industries, and integrators seeking reliability, efficiency, and electrical safety in medium voltage switchgear.