SONEL MZC-320S Short Circuit Loop Impedance Meter

The Sonel MZC-320S short circuit loop impedance meter has been designed to perform flawlessly even in repeated measurements. The unit features an efficient ventilation system to minimise the cooling time of the short-circuit resistor. The instrument performs very well in the widely understood power industry and allows for multiple measurements of the short circuit loop impedance without the need for long downtimes.
Capabilities
- 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 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 test lead (measurement with 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.