Home Products Protection Relays DRAGON 1RLI 402D1 Multifunction overcurrent and line differential protection

RLI 402D1 Multifunction overcurrent and line differential protection

RLI 402D1 mainly designed for double sourced MV feeders and short HV lines. The device can also be applied as an interconnection protection in cases, when the feeder between the source (wind power, solar park etc.) and the utility substation requires Line differential protection.

RLI 402D1 can be used for all types of short circuits and is independent from the type of the neutral grounding.

The protection is suitable for all types of current transformers - iron-core and linearized (Rogowski coil). In case of missing a separate Bay control unit (BCU) for the HV line, local remote control functions are included.

 

  

 

All relay protection functions meet ANSI and IEC standards’ requirements:

  • Line differential protection
  • Line differential protection high stage
  • Three stages non-directional definite time/instantaneous overcurrent protection
  • Non-directional Inverse time overcurrent protection with 12 inverse time characteristics
  • Three stages non-directional definite time/instantaneous ground fault protection
  • Non-directional Inverse time ground fault protection with 12 inverse time characteristics
  • Definite time undercurrent protection
  • Negative Sequence overcurrent protection
  • Phase discontinuity protection
  • Thermal overload protection
  • Arc protection
  • Second harmonic blocking (inrush restraint)
  • Cold load pickup
  • Autoreclosing
  • Breaker failure protection
  • Clockwise and anticlockwise phase rotation function
  • Trip circuits supervision
  • Current circuits supervision functions
  • Circuit breaker life time monitoring

Automation and remote control functions

Disturbance (Fault) Recorder

  • Sampling rate – 1 kHz/4kHz
  • User defined trigger conditions and records duration
  • Recording mode -overwrite (ring buffer) or saturate
  • Each sample consists of instantaneous values of all analog and digital values

Event Recorder

  • Up to 1000 records
  • Each event consists of information about the event’s type, some additional data (such as pick-up current, voltage, the time elapsed and so on) and the time stamp of the event (year, month, day, hour, minute, second, millisecond)
  • Recording mode - overwrite

Protocols

  • Configuration tool - ROCON MMI protocol
  • SCADA communication - IEC 60870-5-103, MODBUS

Configuration, setting and administration

 

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Note: All flyers are subject to regular update