Siemens SICAM FSI-Fault Sensor Indicator

About Siemens SICAM FSI-Fault Sensor Indicator

SICAM Fault Sensor Indicator (FSI) V2.0 B-Sensor is developed using the latest hardware technology and is a member of the Siemens SICAM short-circuit indicator product family. The device is used to improve the reliability and to reduce the downtime on the MV overhead distribution grid. The device measures the phase current continuously and detects the phase fault and ground fault when it is mounted on the MV overhead line network. The device indicates both the temporary fault and the permanent fault via optical indication (LED flashing). The device can be mounted in junction points/branching points and areas of frequent fault. Applications This device is suitable for outdoor applications on MV overhead line. Supports application on solidly grounded or resistive starpoint grounded systems. The device is to be configured in close coordination with the protection systems in the MV network. This results in improved fault detection and localization. The device can be mounted in groups of 3, one device on each phase. The device uses LED patterns to identify faults quickly, distinguishing between temporary and permanent faults. Functions Multiple settings available for fault detection Threshold settings, auto-threshold, and di/dt settings. Auto threshold algorithm Self-Adjustment of trip threshold based on phase current. Inrush restraint Avoids false fault detection due to transformer magnetization during the voltage restoration on the MV overhead line. Auto reclosure restraint Blocks the redundant fault detection during the auto-reclosure retries which are made to restore the MV overhead line. Multiple fault indication reset functionalities Voltage restoration in MV overhead line, auto timer reset and magnetic reset Self-Test Self-test by magnetic reset to verify the battery health of the device. The success/failure of self-test is indicated by a specific LED flashing pattern. Low temperature cutoff Built-in with an automatic cutoff feature when the temperature falls below -40C.1