Network Rail approval for Sonel fault loop impedance meter

The Sonel MZC-306 fault loop impedance meter has been approved by Network Rail for use in their Signalling Power feeders to test the fault current (Ik) and loop impedance (Zs) measurements.  The Sonel MZC-306 meter is fully PADS approved under the Network Rail Certificate of Acceptance PA05/07453.

The meter was selected by engineers at Network Rail as being suitable for making measurements on their electrification systems as it is capable of being used on systems up to 750V.  This functionality makes it ideal for working on the Network Rail 650V electrical network.

As well as calculating the fault current at a resolution of 0.01 ohms, the meter will also give measurements of the resistance (Rs) and reactance (Xs) components of the system under test.

The meter also has an extended test voltage range making it suitable for testing on many alternative system voltages which includes 110/190V, 115/200V, 127/220V, 220/380V, 230/400V, 240/415V, 290/500V and 400/690V.

This wide variety of electrical systems the meter can test not only makes it ideal for the 650V railway network, but also for use in a wide variety of LV electrical installations such as Solar PV renewables, commercial properties, public facilities, workshops and factories.

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