Thermal Protection Relay

The HVEX Thermal Relay is an advanced solution for the protection and monitoring of transformers, electrical panels, and power systems, ensuring high reliability and performance. Designed for temperature and current measurement, the device provides safety and precisioThe HVEX HE009 Thermal Relay is an advanced solution for thermal protection and monitoring of transformers, electrical panels, and power systems, ensuring high reliability and performance. Designed for precise multichannel temperature measurement, the device provides safety and control in critical power generation, transmission, and distribution applications. With 4 temperature measurement channels for PT100 sensors (range from 0 to 200 °C), the relay allows for individual adjustment of alarms and trip settings for intelligent thermal protection. The system features 5 configurable output relays, a proportional analog output (0–10 V, 0–20 mA, or 4–20 mA), and Modbus RTU communication via RS-485, enabling easy remote monitoring and parameterization. In addition, a memory card records trigger events and a continuous temperature history for over 5 years, ensuring traceability and operational reliability. Among its key features are: • Intelligent thermal protection and control for dry-type transformers, oil-filled transformers, and electrical panels. • High-precision temperature measurement via 4 independent PT100 channels with galvanic isolation and high noise immunity. • Flexible operation with 5 programmable relays for alarm, trip, internal failure (fail-safe), and cooling control. • Integrated data logger via non-volatile memory card, with channel recordings every minute for over 5 years and a dedicated event log. • Intuitive local interface for real-time monitoring and versatile mounting on a 35 mm DIN rail or panel-mounted. The HVEX Thermal Relay meets the requirements of major industrial standards and protection ratings, such as IP20 and electromagnetic immunity guidelines, ensuring compliance and safety for your installation. With this technology, your company ensures greater protection, monitoring, and energy efficiency, reducing unexpected failures, optimizing predictive maintenance, and extending the service life of critical assets.