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Sonel MZC-320S High-Current Fault Loop Impedance Meter
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- Phase-phase, phase-PE & phase-N
- 4p (four-pole) method
- Measurement of resistance.
- Remote control via Wi-Fi
SKU
MZC-320S
MPN
MZC-320S
The Sonel MZC-320S measures short-circuit loop impedance (ZS) in networks where prospective fault currents can reach extreme levels. It is rated for systems up to 500 V and capable of measuring in installations where fault currents may reach up to 69.4 kA in accordance with EN 61557.
The MZC-320S has a unique fault resistor design for symmetrical measurement and reliable ZS readings down to single milliohm values. This is particularly critical in networks protected by high-current fuse links or motor protection breakers rated at several hundred amperes. The internal ventilation system accelerates the cooling of the short-circuit resistor, and the MZC-320S supports remote control via Wi-Fi.
Unboxing Sonel MZC-320S
Key Features
- 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 500 V.
- Measurement with a current of 24 A at 230 V, maximum 27 A at 500 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 frequencies 45…65 Hz.
- Ability to perform measurements in a 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 the test lead (measurement with the 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.
- Remote control via Wi-Fi: triggering the measurement, saving the result to the meter’s memory, downloading the results from the instrument’s memory.
- Touch voltage and touch shock voltage measurement with resistor 1 kΩ.
- AC voltage measurement in range 0…550 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
What's Included?
- MZC-320S Impedance Meter
- Double-wire test lead 3 m (10 / 25 A)
- Test lead 1.2 m (banana plugs) black/yellow
- 2x Kelvin clamp, 1 kV, 25 A
- 4x crocodile clip 1 kV 32 A black
- Mains cable 230 V with IEC C7 plug
- Power supply Z19
- L14 carrying case
- Factory calibration certificate
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Technical Information
Specification
| Measurement Functions | Measurement Range | Display Range | Resolution | Accuracy |
|---|---|---|---|---|
| Voltage | 0 V…550 V | 0 V…550 V | 1 V | ±(2% m.v. + 2 digits) |
| Frequency | 45.0 Hz…65.0 Hz | 45.0 Hz…65.0 Hz | 0.1 Hz | ±(0.1% m.v. + 1 digit) |
| Short-Circuit Loop Parameters | ||||
| 4p method - high current measurement, maximum current 300 A | 7.2 mΩ…1999 mΩ acc. to EN 61557 | 0.0 mΩ…1999 mΩ | from 0.1 mΩ | ±(2% m.v. + 2 mΩ) |
| 2p method - standard current measurement, maximum current 37 A | from 0.13 Ω…199.9 Ω acc. to EN 61557 | 0.00 Ω…199.9 Ω | from 0.01 Ω | from ±(2% m.v. + 3 digits) |
| Short-Circuit Current Readings | ||||
| 4p method - high current measurement network voltage 115 V…500 V | up to 57.5 A…69.4 kA acc. to EN 61557 | 115.0 A…500 kA | from 0.1 A | Calculated based on the error for the fault loop |
| 2p method - standard current measurement | from 2.00 A…3.21 kA acc. to EN 61557 | 1.150 A…40.0 kA | from 0.001 A | Calculated based on the error for the fault loop |
| Touch and Shock Voltage | ||||
| 4p method - high current measurement | 0 V…100 V | 0 V…100 V | 1 V | ±(10% m.v. + 2 digits) |
| m.v. - measured value | ||||
Document Downloads
Sonel MZC-320S/330S High-Current Fault Loop Impedance Meter Datasheet
Sonel MZC-320S/330S High-Current Fault Loop Impedance Meter User Manual
Additional Information
SKU
MZC-320S
Manufacturer Part Code
MZC-320S
Sonel MZC-320S High-Current Fault Loop Impedance Meter
£2,530.00
£3,036.00 inc vat
£2,530.00
£3,036.00 inc vat