ELR-51AS & ELR-52AS

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Compliances

• AS/NZS 2081:2011
• EN 61010, EN 61000-6-2
• EN 61000-6-3, IEC/TR 60755
• EN 60947-2 Annex M

Common Features

• Earth leakage relay type A.
• Measuring in true effective value (TRMS).
• Modular DIN-rail housing, 3 modules.
• External residual current transformer Contrel CT-1 series.
• Instantaneous display of leakage values.
• Instantaneous bar-graph of current measurement.
• Backlighted LCD display (green, yellow, red).
• Green power LED indicator (ON).
• Green system healthy LED indicator (OK).
• Red relay tripped LED indicator (TRIP).
• TEST and RESET by front button or remote contact input.
• Log tripped residual current.
• Auxiliary Supply:
  • A = 110 – 240Vac.
  • B = 24 – 48Vac/dc.

Common Settable Features

• Third harmonic filtering.
• Tripping Current I∆n (A) = 30mA to 5A.
• Tripping Time Delay t (s) = 20ms to 500ms.
• Tripping fault hysteresis = 50% to 95%.
• Fail safe function for each relay.

Model Specific Features

• ELR-51AS DIN
  • Number of current transformer inputs = 1.
  • Number of relays = 2.
  • Dedicated Trip Relay = 1.
  • Configurable Relay = 1.
  • Configurable to Trip or Warning.
  • When set to warning, parameters are:
  • Warning set point = 50% to 90%.
  • Warning time delay t (s) = 20ms to 500ms.
• ELR-51AS-485 DIN
  • Same as ELR-51AS DIN with RS-485 communication (Modbus RTU protocol).
• ELR-52AS DIN
  • Number of current transformer inputs = 2.
  • Number trip relays = 2.
• ELR-52AS-485 DIN
  • Same as ELR-52AS DIN with RS-485 communication (Modbus RTU protocol).