Sonel – MPI-506 Loop, RCD, Insulation Resistance Tester

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Datasheet MPI-506


Great little Multi-tasker

Measurement of short circuit loop parameters

  • Measurement of short circuit loop impedance in networks with rated voltage: 220/380 V, 230 V/400 V, 240/415 V and frequency 45…65 Hz, operating voltage range: 180…460 V
  • Indication of short circuit loop resistance R and short circuit loop reactance X
  • Measurements of short circuit loop impedance with 15 mA current, without tripping the RCD circuit breaker
  • Maximum test current: 7.6 A (at 230 V), 13.3 A (at 400 V)

Testing RCD breakers of AC, A types

  • Testing of prompt, short-delay and selective RCDs with rated current values 10, 15, 30, 100, 300, 500 mA
  • Measurement of IA trip current and tripping time tA for currents 0.5 IΔn, 1 IΔn, 2 IΔn, 5 IΔn • RE and UB measurement without RCD tripping
  • Extended AUTO function of RCD measurement, with the possibility of measuring ZL-PE with low current
  • Measurement of IA and tA during one RCD tripping

Insulation resistance measurement

  • Test voltage 100 V, 250 V, 500 V

Measurement of resistance of protective conductors and equipotential bondings

  • Measurement of protective connections continuity with a ±200 mA current in accordance with EN 61557-4
  • Autocalibration of test leads – any leads can be used
  • Low current resistance measurement with sound signaling

Phase sequence indication

Additional functions

  • Checking the correctness of PE connection using a contact electrode
  • Measurement of voltage (0 … 500 V) and network frequency
  • Memory of 990 results, wireless data transmission to a computer
  • Backlit keypad