Protection Functions
FDPro 401 80 provides the following protective functions:
•.ANSI 37: Undercurrent (optional)
•.ANSI 46: Phase Balance
•.ANSI 49: Thermal Overload
•.ANSI 50BF: Breaker Failure
•.ANSI 50G & 51G: Ground Overcurrent
•.ANSI 50P & 51P: Phase Overcurrent
•.ANSI 64REF: Restricted Earthing (optional)
•.ANSI 68: Blocking Relay
•.ANSI 74CT: CT Trouble
•.ANSI 79: Autoreclosing
•.ANSI 86: Lockout Relay
•.CLP: Cold Load Pickup
•.TCM: Trip Circuit Monitoring
Hardware
• 7 Digital Inputs + 6 Digital Outputs + 7 LEDs
• Universal 20-130 V PSU
• Ethernet RJ45 and RS485 Serial Ports
• Configurable 1/5 A Nominal Current
Communication
• Modbus RTU RS485 / IEC 60870-5-103 / DNP3 protocol
• Modbus TCP/IP protocol
• IEC 61850 (optional)
OVERCURRENT RELAY
FDPro 401
FDPro 401 protection series are designed to electrical power distribution systems from overvcurrent faults to quickly isolate the grid and provide comprehensive and reliable protection.
Technical Questions
What is an overcurrent relay?
What are the usage areas of overcurrent relay?
What are the key parameters to consider when selecting a relay for a specific application?