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PL70IT
Current Protection Relay

Main Features

  • Wide variety of protection functions in models designed for specific applications
  • Intuitive configuration and monitoring software supplied with the equipment. It does not require a previous configuration to communicate with the equipment.
  • User-defined logic signals
  • Digital inputs and outputs and programmable LED indicators
  • Serial and Ethernet communication
  • Real time monitoring and recording of the parameters of the breaker
  • Events and faults recording
  • Automatic reclosing functions
  • 4 setting groups for the automatic adaptation of the relay’s programming to the grid conditions.
  • Synchronisation via demodulated IRIG-B or global reference through communication protocols

 

Options

  • Connections Connector for pin or ring type terminals
  • Field interfaces
Configuration Digital Inputs Digital Outputs Others
0 2 6  
1 8 11  
2 7 11 IRIG-B

 

  • Power supply; 12 Vcc; 24/48 Vcc; 125/220 Vcc; 220 Vca
  • Power supply voltage measurement
  • Communications ports All of the pieces of equipment have a front RS232 port for local access and additionally:
    • 1 serial; 2 serial; 1 serial + 1 Ethernet
  • Communication ports connection types:
    • Serial: RS232, RS485, Glass Fibre Optic, Plastic Fibre Optic
    • Ethernet: RJ45
  • IP54 front lid
  • Models by protection functions:

                        PL70IT (3xI phases + 1xI neutral): 50/51, 50/51N, 50/51R, 46, 46FA, 37, 50FI, 79, Cold load, 74TC/CC
                        PL70IS (3xI phases + 1xI neutral): 50/51, 50/51N, 50/51R, 46, 46FA, 37, 50FI, 79, Cold load, 74TC/CC
                        PL70IA (1xI + 1xV): 67NA, 74TC/CC
                        PL70ID (1xI + 1xV): 67N, 50FI, 74TC/CC
                        PL70IP (3xI phases + 1xI neutral): 50/51, 50/51N, 50/51R, 49, 46, 46FA,87N, 74TC/CC
                        PL70IM (1xI): 50/51, 49, 50FI, 74TC/CC
                        PL70FI (3xI phases + 1xI neutral): 50FI (mono/three-pole), Flashover (by current measurement), End fault, 74TC/CC
                        PL70IV (3xI phases + 1xV): 50/51, 50/51R, 49, 46, 46FA, 51V, 50FI, 74TC/CC

 

Application:

  • Protection for feeders with or without autoreclose 
  • Motor protection
  • Backup protection for transformers
  • Electric machines earthing protection
  • Breaker protection
  • Isolated neutral grids earthing protection

 

 

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