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MZC-305 Loop Impedance Meter
MZC-305 Loop Impedance Meter - Image 2

MZC-305 Loop Impedance Meter

Category:

Description

  • 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 (4xAA)

Measurement of short circuit loop impedance (ZL-PE, ZL-N, ZL-L)

Measuring range according to IEC61557: 0,13…1999 Ω for 1,2 m test leads; 0,25…1999 Ω for UNI-SCHUKO adapter

Range Resolution Accuracy
0,00…19,99 Ω 0,01 Ω ±(5% m.v. + 3 digits)
20,0…199,9 Ω 0,1 Ω ±(4% m.v.. + 3 digits)
200…1999 Ω 1 Ω
  • rated operating voltage UnL-N/ UnL-L: 110/190 V, 115/200 V, 127/220 V, 220/380 V, 230/400 V, 240/415 V, 290/500 V, 400/690 V,
  • operating voltage range: 100-440 V (for ZL-PE and ZL-N) and 100-750 V (for ZL-L)
  • high current measurement (up to 30 A),
  • operating frequency range: 45…65 Hz,
  • control of correctness of PE terminal connection by means of a contact electrode (applicable to ZL-PE),
  • measurement is also possible when L and N circuits are swapped,
  • measurement of resistance and reactance components,
  • short circuit current calculation.

Measurement of short circuit loop impedance ZL-PE RCD (without RCD tripping)

Measuring range according to IEC61557: 0,43-1999 Ω for 1,2 m test leads; 0,50-1999 Ω for UNI-SCHUKO adapter

Range Resolution Accuracy
0,00…19,99 Ω 0,01 Ω ±(6% m.v. + 10 digits)
20,0…199,9 Ω 0,1 Ω ±(6% m.v. + 5 digits)
200…1999 Ω 1 Ω
  • operating voltage range: 100 – 440 V,
  • rated operating voltage Un: 110 V, 115 V, 127 V, 220 V, 230 V, 240 V, 390 V, 400 V,
  • control of correctness of PE terminal connection by means of a contact electrode,
  • measurement is also possible when L and N circuits are swapped,
  • measurement of resistance and reactance components,
  • short circuit current calculation.

Voltage measurement

Range Resolution Accuracy
0,0 V…249,9 V 0,1 V ±(2% m.v. + 4 digits)
250 V…750 V 1 V ±(2% m.v. + 2 digits)
  • measurement available for all settings of short-circuit loop (ZL-PE, ZL-PE RCD and ZL-N,L-L),
  • frequency range 45-65 Hz,
  • overvoltage alarm.

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 190×60 mm
  • meter weight: ca. 2,2 kg

Rated operational conditions:

  • operating temperature: 0…+45°C
  • storage temperature: -20…60°C
  • humidity 20 – 80%

The instrument meets the requirements of EMC standards

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