Category: Loop Impedance Meters

Loop Impedance Meters

Loop Impedance Meters use loop tests. Should a fault occur, one needs to establish whether the fault current will be strong enough to set off the fuse or the circuit breaker. If a fault current is left undetected, circuits can overheat and catch on fire.

  • High Current Loop Impedance Tester | MZC-320

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    Safety Rating Cat IV at 600V label

    High Current Loop Impedance Tester - Overview

    Measurement of very low short circuit loop impedance (with resolution 0,1 mΩ) with a current of 130 A at 230 V; maximum 300 A at 550 V or with a current 24 A at 230 V, maximum 30 A at 550 V (with resolution 0,01 Ω).

    High Current Loop Impedance Tester - Features

    • measurements in installations with rated voltages between: 110/190 V, 115/200 V, 127/220 V, 220/380 V, 230/400 V, 240/415 V i 290/500 V and frequencies 45...65 Hz
      • ability to perform measurements in short circuit system: phase-phase, phase-protective, phase-neutral
    • differentiation between the phase voltage and the inter-phase voltage while calculating the short circuit current
    • ability to change the length of test lead
    • four-pole method, test leads do not require calibration (measurement with current 300 A)
    • Touch voltage and touch shock voltage measurement with resistor 1 kΩ)
    • AC voltage measurement in range 0...550V
    • Memory of 999 measurement results with an ability to transfer the data to a PC
    • Ability to transmit date to USB
    • Meter meets the requirements of the standard EN 61557
  • Profile Picture- Loop Impedance Meter

    Loop Impedance Meter | MZC-306

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    Safety Rating Cat IV at 600V labelSafety Rating Cat III at 1000V label

    Loop Impedance Meter - Overview

    Performing loop impedance tests without tripping RCD saves time and money by not having to take the RCD out of the circuit when testing and is a safer procedure.  It is important to know that if a fault occurs in an electrical installation, sufficient current will flow to operate the fuse or circuit breaker protecting the faulty circuit within a predetermined time. This Loop impedance meter has a Cat IV rating up to max 750V and makes light work of short circuit loop measurements.

    Loop Impedance Meter - Features

    • Loop impedance measurement with resolution 0,01 Ω
    • Loop impedance measurement without tripping the circuit breaker > 30 mA with resolution 0,01 Ω (100...440 V)
    • Measurements possible in installations 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 (range 100...750 V)
    • Short circuit current indication
    • Voltage measurement up to 750 V and up to 250 V with resolution 0,1 V
    • Measurements using Uni-Schuko adapter or test wires 1,2; 5; 10 and 20 m
    • Memory of 990 records
    • USB connection with PC
    • Powered by disposable or rechargeable (4xLR14)
  • Loop Impedance Meter MZC-304

    Loop Impedance Meter | MZC-304


    Safety Rating Cat IV at 300V label  Safety Rating Cat III at 600V label  Ingress protection IP67 label

    Loop Impedance Meter - Overview

    The MZC-304 meter is designed for testing the protection against electric shock in the mains systems. The meter is used to make measurements which determine the electrical installation safety level.

    Loop Impedance Meter - Features

    • Measurements of impedance in a short circuit loop
      • L-PE circuit
      • L-N, L-L circuit
      • L-PE(RCD) circuit - without tripping the circuit breaker  ≥ 30 mA
    • Low voltage resistance measurement
    • Continuity measurement - DC current +200 mA with wire resistivity rest
    • Low current resistance measurement with acoustic signalling
    • The measurements are possible in installations 220/30 V, 240/415 V with frequency range 45...65 Hz
    • Memory of 10 banks of 99 cells each (min. 10000 records)
    • Radio wireless interface communication