Sonel MZC-330S



  • Measurement of very low short circuit loop impedances (with resolution 0,1 mΩ) with a current of 130 A at 230 V; maximum 300 A at 690 V.
  • Measurement with a current of 24 A at 230 V, maximum 37 A at 690 V with resolution 0,01 Ω.
  • Measurements in installations with rated voltages: 110/190 V, 115/200 V, 127/220 V, 220/380 V, 230/400 V, 240/415 V, 290/500 V and 400/690 V and frequencies 45…65 Hz.
  • Ability to perform measurements in short circuit system: phase-phase, phase-PE, phase-N.
  • Differentiation between the phase voltage and the inter-phase voltage while calculating the short circuit current.
  • Ability to change the length of test lead (measurement with 2p method).
  • 4p (four-pole) method, test leads do not require calibration (measurement with current up to 300 A).
  • Measurement of resistance (RS) and reactance (XS) components.

Additional features

  • Touch voltage and touch shock voltage measurement with resistor 1 kΩ).
  • AC voltage measurement in range 0…750 V.
  • Frequency measurement 45.0…65.0 Hz.
  • Memory of 990 measurement results, ability to transfer the data to a PC via USB and Bluetooth.
  • Power supply: rechargeable battery
  • Reaching the areas unattainable to others

Remote working is always the best solution

The instrument can be controlled remotely – all that is required is for the meter to be logged into the same Wi-Fi network as the controlling device, i.e. any device with a web browser. After calling up the virtual control panel in the browser, the user will be able to start the measurement from a convenient distance and then read out the results.

By the same means, he will gain access to the stored measurement results. Importantly, he or she will also be able to download them in the classic manner, i.e. via a USB connection.

For more information visit the Sonel product page

Choose the Sonel MZC-330S high-current short-circuit loop impedance meter with efficient ventilation system for smooth and effective operation without downtime.

In case of multiple short-circuit loop impedance measurements, some measuring devices may get blocked. This problem does not affect the Sonel MZC-330S meter. To prevent blockages, the device is equipped with a special high performance ventilation system that significantly reduces the time required to cool the short-circuit resistor. The Sonel MZC-330S advanced high current meter is the right choice for professionals in the power, electrical, as well as installation and measurement industries. The device combines extensive measuring capabilities with high durability and resistance to harsh working conditions. A specially developed ventilation system translates into greater efficiency and significantly reduces working time.

Measurement functionsMeasurement rangeDisplay rangeResolutionAccuracy
Voltage0 V…750 V0 V…750 V1 V±(2% m.v. + 2 digits)
Frequency45.0 Hz…65.0 Hz45.0 Hz…65.0 Hz0.1 Hz±(0.1% m.v. + 1 digit)
Short-circuit loop parameters
4p method – high current measurement maximum current 300 A7.2 mΩ…1999 mΩ acc. to EN 615570.0 mΩ…1999 mΩfrom 0.1 mΩ±(2% m.v. + 2 mΩ)
2p method – standard current measurement maximum current 37 Afrom 0.13 Ω…199.9 Ω acc. to EN 615570.00 Ω…199.9 Ωfrom 0.01 Ωfrom ±(2% m.v. + 3 digits)
Short-circuit current readings
4p method – high current measurement network voltage 115 V…690 Vup to 57.5 A…95.8 kA acc.115.0 A…690 kAfrom 0.1 ACalculated on the basis of error for fault loop
2p method – standard current measurementfrom 2.00 A…3.21 kA acc. to EN 615571.150 A…40.0 kAfrom 0.001 ACalculated on the basis of error for fault loop
Touch and shock voltage
4p method – high current measurement0 V…100 V0 V…100 V1 V±(10% m.v. + 2 digits)

m.v. – measured value


Download: Sonel MZC-330S  [HERE]

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