What Is an Alarm Annunciator? Working, Applications & Modern Touch Screen Types
What Is an Alarm Annunciator and Why Is It Critical in Electrical Panels? An alarm annunciator is a vital device used in electrical substations, power plants, and industrial control panels to provide visual and audible indication of faults . It ensures operators are immediately alerted when abnormal conditions occur, helping prevent equipment damage, downtime, and safety hazards. How Does an Alarm Annunciator Work? Alarm annunciators continuously monitor multiple fault inputs coming from relays, sensors, or protection devices. When a fault occurs, the annunciator highlights the corresponding window using distinct colors, sound alarms, and time stamps . Modern annunciators also store fault history and support communication with SCADA or PLC systems. Key Features of Modern Alarm Annunciators Multiple fault inputs (NO / NC configurable) Bright visual indication with clear fault identification Audio alarm with acknowledgment and reset functions Real-time clock for ...