MONITORING RELAY VOLTAGE 1CO 8A SEQ./FAIL. HYST

Monitoring relays protect expensive electrical equipment from damage when electrical setpoints change in the electrical network. Protection is also provided against indirect effects of voltage fluctuations; for example, cold rooms are equipped with compressors that operate via electric motors. These devices cannot withstand operational disturbances, as the refrigerant then returns to the compressor, causing damage to the cooling unit. A network monitoring relay can, during a fault condition, simultaneously start a backup generator. Phase and current monitoring relays also protect loads during prolonged startup times or if the motor rotor becomes jammed, preventing potential damage from overload. Current limitation relays protect circuits against overloads to optimize cables and connections. This product description is an automated translation of the original Finnish description.