Current Voltage Power Feeder Protection Relay with Ethernet port

• Primary and backup protection for utility feeder, power plants and industrial distribution systems
• Protection of transformers, overhead lines, cables and generators

Protection and Functionality

• (27) Undervoltage
  
• (32) Directional power
  
• (37) Undercurrent
  
• (46) Negative sequence current
• (47) Phase-sequence voltage
• (50) Instantaneous phase overcurrent
• (50N/50G) Instantaneous ground overcurrent
• Overload alarm pickup level
• (51) Inverse time phase overcurrent
• (51N/51G) Inverse time ground overcurrent
• ANSI, IAC or IEC/BS142 curves included:
• moderately inverse
• normal inverse
• very inverse
• extremely inverse
• definite time
• (55) Power factor
• (59) Overvoltage
• (68) Blocking output
• (81) Underfrequency and Overfrequency
• (86) Lockout
• Accumulated KA per phase on breaker interruption

Features

• CT primary ratio selectable in 5 A steps (5 to 6000 A)
  
• Touchpad programming
  
• 1 trip relay
  
• 3 auxiliary relays that can be associated to the various functions
  
• Power loss or internal fault control relay
  
• 3 programmable Digital inputs and 1 Digital input for breaker status
  
• Breaker operation failure alarm on trip command
  

Signalling

• LED and LCD display indication
• Last trip cause and relative data
• Indication and storage of fault condition and their values
• Indication of the breaker status (open, close, earthed)
• RMS line and ground currents
• RMS line or phase voltages
• Active power (kW), reactive power (kvar) and apparent power (kVA)
• Active energy (MWh) and reactive energy (Mvarh)
• Power factor and system frequency
• Positive and negative real power (kW) and reactive power (kvar)
• Demand and maximum demand: current in each phase (A), real power (kW), reactive power (kvar)

Communication

• Communication port: (1) Ethernet and (2) RS485
• Remote programming of the setpoints
• Communication Protocol: Modbus RTU
• Ethernet communication port (Modbus TCP/IP)