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Exceltech µDLEDX-T DIN-Rail Motor Protection Relay

Exceltech µDLEDX-T DIN-Rail Motor Protection Relay

Model number
µDLEDX-T

DIN-rail motor protection relay with LED display, 0.2 A to 500 A (built-in CT up to the 2 – 62.5 A range): overload, single phasing, unbalance, locked rotor, under current, short circuit and earth fault.

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Key features

  • LED seven-segment display with bright pixels, on a DIN-rail mounted relay
  • Numerical algorithm for fast, reliable operation
  • Displays the 3 phase currents and the thermal capacity used
  • Annunciation for each type of fault
  • Thermal overload curves selectable as required
  • Excellent accuracy and long-term stability of the thermal curves (software based)
  • Continuous self-supervision and fail-safe operation
  • Annunciation if the motor fails to stop after the device issues a trip command
  • Keypad for settings
  • Up to five trip records (FIFO)
  • Reset inhibit function, hour counter, onsite calibration
  • Password facility (on demand)
  • Robust, shock-proof, non-metallic screwless housing
  • Protection CT supplied with the relay, sized to the load
  • Options: RS 485 MODBUS RTU, 4 – 20 mA output (or both), relay output for external alarm, external reset, password, thermistor temperature protection

Specifications

Protection
FunctionsOverload, single phasing (current based), unbalance (current based), locked rotor, under current, short circuit, earth fault
OptionalThermistor-based temperature protection
Current ranges
Rated current (motor FLC)0.2 – 500 A in seven CT ranges
CT ranges0.2 – 6.25 A, 0.4 – 12.5 A, 0.8 – 25 A, 2 – 62.5 A, 4 – 125 A, 40 – 250 A, 80 – 500 A
80 – 500 A rangeAll protections except short circuit
CTBuilt-in CT up to the 2 – 62.5 A range; external CT for the higher ranges
Settings
Thermal overload setting range0.2 – 500 A, as per the CT range selected
Thermal overload curves2.5C, 5C, 10C, 15C, 20C and 30C (six curves)
Thermal overload operating timeAs per the curve selected
Under currentEnable / disable; setting 10% – 80% FLC; operating time 1 – 60 s
Locked rotorPick-up 3 × FLC; pick-up delay during starting 1 – 30 s
Earth faultSetting 10% – 30% FLC; operating time 0.5 – 3 s; can be blocked for the first 10 s of motor starting
Short circuitPick-up 8 × FLC; instantaneous (not on the 80 – 500 A range)
Single phasingEnable / disable; operating time 2 s (fixed)
UnbalanceEnable / disable; setting 10% – 40%; operating time 3 – 10 s
Thermal resetEnable / disable; reset inhibit time 1 – 999 s (when thermal reset is disabled)
Display and records
DisplayLED seven-segment
Measures and displaysR, Y and B phase currents, thermal capacity used, hour counter, start counter
Trip recordsUp to 5 events (FIFO)
Outputs (optional)
Data outputRS 485, MODBUS RTU; 9600 baud; word length 8
Analog output4 – 20 mA
General
Auxiliary supply230 V AC, 50 Hz (optional 110 V AC / 415 V AC)
Rated frequency50 Hz / 60 Hz
MountingDIN rail
Dimensions (L × W × D)100 × 75 × 110 mm
WeightApprox. 500 g
Ambient temperature0 °C – 55 °C
Degree of protectionIP54 (front of the device)

Specifications are from the manufacturer's published information. Confirm critical values with us or the datasheet before ordering.

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