In direct vicinity of transformers or in transformer stations, where the circuits are equipped with a high current protection (fuse-links with the rating of several hundred amperes, motor circuit breakers), fault currents may reach several hundreds of kilo-amps. Measurement of fault loop impedance in such networks requires a high-current meter, which is capable of measuring ZS values at the level of single milliohms. Our patented technical solution, which uses components not available in the commercial offer (unique fault resistor), enables us to offer the meter with perfect performance in such demanding conditions
The Sonel fault loop meters are used for measurements in networks up to 750 V, where the prospective fault current may reach 95,8 kA, as measured according to EN 61557.
The Sonel MZC-340-PV can make measurements in networks up to 900V and primarily designed for testing fault current in solar PV farms and solar power plants utilising the latest 1500VDC / 800VAC inverters.
These parameters make the meter perfect for tests and measurements at wind farms, high-speed rail and in facilities controlled by power companies.
