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Eaton distribution relay

Eaton’s Distribution Relays (EDR3000 and EDR5000) offer complete metering, protection, and control for all voltages in a single compact case to reduce panel space, wiring and overall costs. All relays meet or exceed instantaneous and time overcurrent requirements. Integral test functions reduce required maintenance and troubleshooting time, and intuitive programming reduces required operator training time and provides unmatched flexibility, resulting in reduced overall expense. All relays perform multiple protection functions, self-diagnostics, and reporting for transformers and distribution lines.

Eaton distribution relay

Eaton’s distribution relay family–EDR Series

Use the following chart to compare the protective funtions of Eaton's E-series distribution relays.

EDR-3000 distribution relay

Eaton EDR-3000 distribution relay

46— Current unbalance elements

50BF— Breaker failure

50P— Phase instantaneous overcurrent elements

50R— Calculated ground or neutral instantaneous overcurrent elements

50X— Measured ground or neutral instantaneous overcurrent elements

51P— Phase overcurrent protection per time-current curve elements

51R— Calculated ground fault protection per time-current curve elements

51X— Measured ground or neutral fault protection per time-current  curve elements

CLPU— Cold load pickup

SOTF— Switch on to fault

CTS— Current transformer supervision

74TCM— Trip coil monitor (option)

ZI— Zone selective interlocking (option)

EDR-5000 distribution relay

Eaton EDR-5000 distribution relay

The EDR-5000 has all of the same protection functions as the EDR-3000 with additional features.

27A/M— Auxiliary and main three-phase undervoltage elements

47— Voltage unbalance elements

55A/D— Apparent and displacement power factor elements

59A/M— Auxiliary and main three-phase overvoltage elements

59N— Ground fault overvoltage elements

67P— Directional overcurrent elements

67X— Calculated directional overcurrent elements

78V— Vector surge element

81U/O/R— Under and over and rate of change frequency elements

LOP— Loss of potential

25— Sync check

32— Forward and reverse watts elements

32V— Forward and reverse VARs elements

51V— Voltage restraint elements

79— Auto-reclosing

27T— Low voltage ride-through (LVRT)

27Q— Reactive power and undervoltage

Typical one-line example—ANSI protective elements guide

ANSI protective elements guide for Eaton distribution relays

Protective elements key

 Elements available on EDR-3000 and EDR-5000

 Elements available on EMR-5000

Improved coordination
Zone selective interlocking
Improved safety
Arc flash reduction

Common software tools

All E-series relays, including our E-series distribution relays, use the same software interface for easy access to information and programming of settings. Whether you are using the front panel or the external software, the interface is the same on all models.

  • Operation 
  • System Parameters
  • Protection Parameters
  • Device Parameters
  • Control 
  • Logic 
  • Device Planning 
  • Service
The E-series family platform makes it easy for users to program simple to complex settings or schemes for each of their unique applications.

Eaton E-Series Relays

    Distribution relay core features

    • Complete metering, protection, and control in a single compact case to reduce panel space, wiring and costs. 
    • Intuitive programming substantially reduces operator training time and provides unmatched operability and flexibility. 
    • Integral test function reduces maintenance time and expense. 
    • Zone selective interlocking improves coordination and tripping time, and saves money compared to a traditional bus differential scheme. 
    • Multiple operator selectable protective functions reduce arc flash energy and zone selective interlocking for bus protection, eliminating the need of additional CTs or relays. 
    • Reduce trouble shooting time and maintenance costs-Trip and event recording in non-volatile memory provides detailed information for analysis and system restoration. 6000 cycles of waveform capture aids in post fault analysis (viewable using Powerport-E software). 
    • Minimum replacement time-Removable terminal blocks ideal in industrial environments. 
    • Breaker open/close from relay faceplate or remotely via communications. 
    • Fast and easy troubleshooting, improved maintenance procedures and increased device security. Provides detailed traceability for system configuration changes. 
    • Relays self-diagnostics and reporting improves uptime and troubleshooting. 
    • Breaker trip circuit monitoring improves the reliability of the breaker operation.

    Reliable protection

    Eaton’s E-Series microprocessor-based protective relays offer reliable, secure and complete protection and control of power generation and distribution systems. The distribution relay specifically provides you complete protection for medium-voltage feeder distribution lines.