Power Quality: The Thing Nobody Measures Until Something Breaks

Most organizations track energy consumption in kWh. Far fewer check whether the power they receive actually meets EN 50160. Poor power quality causes equipment failure, downtime, and efficiency losses – and if you can measure it, you can prove it.
What is a pulse output energy meter and how can you use it to analyze your bill?
Any energy meter has a pulse output option. The pulse output could be optical – a blinking diode (flashing led) used for calibrating the unit or electrical (so-called S0) pulse output.