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Sonel MZC-305 Loop Impedance Meter - CATIV

Sonel MZC-305 Loop Impedance Meter - CATIV
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High resolution loop impedance meter
  • 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 Vand 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 (4xAA)

    Electrical safety:

  • type of insulation: double, according to IEC 61010 - 1
  • measurement category: CAT IV 600 V (CAT III 1000 V)
  • protection class acc. to EN 60529: IP54
  • Other technical data

  • power supply: alkaline batteries or NiMH rechargeable batteries, size AA (4 pcs)
  • number of Z measurements (for alkaline batteries): >3000 (2 measurements per minute)
  • time to Auto-OFF: 120 seconds
  • data transmission: USB
  • memory of measurement results: 990 cells, 3500 entries
  • display: LCD segment
  • dimensions: 260 x 190x60 mm
  • meter weight: ca. 2,2 kg
  • pdficon small View Data Sheet



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The meter has been designed for fitters and measurement technicians performing services in residential buildings, office blocks, manufacturing plants and any facilities possessing a low-voltage electrical system. The instrument is also recommended for electrical maintenance personnel.

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