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Sonel MZC-306 Loop Impedance Meter

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MZC-306
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The Sonel MZC-306 Loop Impedance Meter can measure fault loop impedance to a resolution of 0.01Ω and can determine low-current impedance measurements in circuits protected by RCD ≥30mA (100 to 440V). In addition to this, the Sonel MZC-306 Loop Impedance Meter delivers the following:

  • Voltage measurements up to 750V AC (up to 250V with a resolution of 0.1V)
  • Calculation of fault current
  • Measurements with swapped L and N conductors
  • Measurements of resistance (RS) and reactance (XS) components
  • Automatic differentiation between phase and phase-to-phase voltage
  • Checking the connection of PE terminals using a contact electrode

1.2m, 5m, 10m and 20m test leads or a power network plug adapter can be connected to the Sonel MZC-306 Loop Impedance Meter. Up to 990 readings can be saved to the Sonel MZC-306 Loop Impedance Meter’s integrated memory. Stored data can be transferred via a USB interface.

Support for a wide range of operating voltages (100V to 750V) means the Sonel MZC-306 Loop Impedance Meter can be used to determine measurements for an array of network types. This makes the Sonel MZC-306 Loop Impedance Meter suitable for use in homes, public buildings and facilities, and small workshops and factories. The Sonel MZC-306 Loop Impedance Meter also has an operating frequency of 45 to 65Hz.  

The Sonel MZC-306 Loop Impedance Meter is a versatile, lightweight and professional fault loop meter.

Sonel MZC-306 Loop Impedance Meter Key Features

  • A tester primarily designed to measure fault loop impedance, as well as other electrical parameters
  • Measure fault loop impedance to a resolution of 0.01Ω
  • Determine low-current impedance measurements in circuits protected by RCD ≥ 30mA (100 to 440V)
  • Voltage measurements up to 750V AC (up to 250V with a resolution of 0.1V)
  • Calculation of fault current
  • Measurements with swapped L and N conductors
  • Measurements of resistance (RS) and reactance (XS) components
  • Automatic differentiation between phase and phase-to-phase voltage
  • Check the connection of PE terminals using a contact electrode
  • Connect 1.2m, 5m, 10m or 20m test leads
  • Connect a power network plug adapter
  • Save up to 990 readings to the integrated memory
  • Transfer data via a USB interface
  • Wide operating voltage range: 100V to 750V
  • Suitable for use with an array of network types
  • Suitable for measuring networks in homes, public buildings and facilities, and small workshops and factories
  • Operating frequency range: 45 to 65Hz
  • A versatile, lightweight and professional fault loop meter

What’s Included?

  • Sonel MZC-306 Loop Impedance Meter
  • WS-05 Adapter with UNI-SCHUKO Angular Plug
  • 1x Crocodile Clip, 1kV 20A
  • M1 Hanging Straps
  • NiMH Battery, 4.8V 4.2Ah
  • USB Cable
  • 3x Pin Probe, 1kV, Banana Socket (Red, Blue and Yellow)
  • 2x Pin Probe, 5kV, Banana Socket (Red and Black)
  • L1 Hanging Straps
  • Mains Power Cable
  • 3x 1.2m Test Leads, Banana Plugs (Red, Blue and Yellow)
  • 1x 0.7m Test Lead, Banana Plugs (Black)
  • L4 Carrying Case
  • Z7 Power Supply Adapter
Part Code

Sonel MZC-306 Loop Impedance Meter Technical Specifications 

Measurement of fault loop impedance ZL-PE, ZL-N, ZL-L
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 ±(4% m.v. + 3 Digits)
Notes

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

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] (RCD protected)
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 ±(6% m.v. + 5 Digits)
Notes 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...249.9 V 0.1 V ±(2% m.v. + 4 Digits)
250...750 V 1 V ±(2% m.v. + 2 Digits)
Notes frequency range 45…65 Hz
overvoltage alarm
Electrical Safety 
Type of insulation according to
IEC 61010-1 and IEC 61557
double
Measurement category according to
EN 61010-1
IV 600 V / III 1000 V
Protection class acc. to EN 60529 IP54
Other Technical Data 
Power supply rechargeable / alkaline batteries,
LR14 (4 pcs)
Dimensions 288 x 223 x 75 mm
Weight ca. 2 kg
Operating temperature 0…+45°C
Storage temperature -20…+60°C
Humidity 20…80%
Reference temperature +23 ± 2°C
Reference humidity 40…60%
Altitude <2000 m
Time to Auto-OFF 300 seconds
Number of Z measurements (for
rechargeable/alkaline batteries)
>5000 (2 measurements/minute)
Display LCD segmented
Quality standard ISO 9001
The device meets the requirements of IEC 61557
The product meets EMC requirements of EN 61326-1 and EN 61326-2-2

 

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