Fluke-43B-Series-Power-Quality-Analyser-FLUKE-FLUKE-43B-Powerful-solutions-for-today-s-needs-Circuit-breakers-that-trip-transformers-that-overheat-motors-that-burn-out-machines-that-do-not-function-properly-whatever-the-problem-you-can-quickly-&-easily-identify-the-cause-with-the-Fluke-43B-power-quality-analyzer-br-br-As-a-power-quality-analyzer-it-is-optimized-for-industrial-measurements-on-the-50 Hz-fundamental-frequency-Because-its-frequency-range-extends-from-10-to-400 Hz