fault recorders
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IDM+ Multifunction power system monitor (with options for power quality, PMU and TWS fault location) A multifunction substation monitor offering advanced fault recording and long duration disturbance monitoring with options of phasor measurement in compliance to the IEEE C37.118 2005 specification; the most accurate fault location available using traveling wave methodology and Class A power quality in compliance with IEC 61000-4-30 Class A (Edition 2.0).