NPID800
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NPID800

Directional overcurrent protection

Provides phase and earth overcurrent protection for medium and high voltage electrical networks against all types of short circuits.

This NPID800 multifunction relay with directional criteria monitors upstream or downstream network sections, enhancing the selectivity and adaptability of your protection scheme.

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Directionnal overcurrent protection
Easy to use
Measurement and monitoring
Recording / event log
Disturbance recording
Local HMI
Communication interfaces
Communication protocols
Mesures and operations
Power supply
Type of option cards
Current inputs
  • 3
Sensitive current inputs
  • 1
Voltage outputs
  • 3
Disturbance records
  • 4
Digital inputs
  • 8
Digital outputs
  • 7
Watchdog output
  • 1
Indication LEDs
  • 5
Number of optional modules
  • 1
  • 46 — Reversal, loss of phase or unbalance phase
  • 49T — Transformer thermal overload
  • 50 — Instantaneous overcurrent
  • 50BF — Breaker failure
  • 50N — Instantaneous residual overcurrent
  • 51 — Time overcurrent
  • 51N — Time residual overcurrent
  • 67 — Phase directional overcurrent
  • 67N — Earth directional overcurrent
  • 74TC — Trip circuit supervision
  • 86 — Locking-out function

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For over 75 years, we have been supporting the energy transition by designing protection and control solutions for electrical networks.

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