Reyrolle 5 7SR54

The Reyrolle 5 7SR54 is designed for the electricity networks of the future with enhanced communications and cybersecurity while maintaining a user-friendly interface and easy product management.

It provides protection, control, and monitoring of 2 and 3 winding transformers. All transformer vector groups and earthing connections are supported.

It also includes a wide range of protection functions and IEC 61850 Ethernet communications as standard.

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DESCRIPTION

Basic Features

  • Large LCD, tactile pushbuttons and programmable LEDs
  • Relay element is detachable for easy replacement
  • Undercurrent protection – phase/earth (37/37G)
  • Negative sequence overcurrent protection (46)
  • Broken conductor detection (46BC)
  • Thermal overload protection (49)
  • Temperature sensor supervision (49TS)
  • Instantaneous overcurrent/earth fault protection (50/50G/50N)
  • Arc flash detection (50AFD)
  • Circuit‑breaker failure protection – 3 pole (50BF)
  • Time delayed overcurrent/earth fault protection (51/51G/51N)
  • Circuit‑breaker control (52)
  • CT supervision (60CTS)
  • Close‑circuit and trip‑circuit supervision (74CC/74TC)
  • Inrush current detection (81HB2)
  • Over fluxing detection – 5th harmonic (81HB5)
  • Lockout (86)
  • Fault data, event, and waveform records
  • Event records (selectable events viewable on fascia)