Device

SICAM P855 is designed as panel flush-mounted device witha graphical display for displaying measured values andparameterization: SICAM P855 (7KG850xxx). SICAM P855is also available as DIN rail devices without displays. Ethernet communication uses the Modbus TCP or IEC 61850 communication protocol. Serial communication is optionallyavailable with an RS485 interface via Modbus RTU or IEC 60870-5-103.The front protection class is IP20 for DIN rail devices withoutdisplays. Devices for panel flush mounting with displays haveprotection class IP40 or IP51.

Hardware design

SICAM P855 contains the following electrical modules,depending on the device variant:

• Digital signal processor (DSP)
• Display and softkeys. Display and softkeys
• 4 inputs for AC voltage measurements
• 3 inputs for AC current measurements
• 2 binary outputs
• Power supply
• Ethernet interface
• RS485 interface (depending on variant ordered)