Portable power meters and analyzers are power measuring instruments for measuring single to three-phase lines with a high degree of precision and accuracy. Monitoring and recording power supply anomalies, allowing their causes to be quickly investigated, and also for assessing power supply problems such as voltage drops, flicker, harmonics, and other electrical issues.


Analyzing electrical parameters associated with distributing electricity is viewed by many as complex engineering work. Yet, for engineers, electricians, and technicians troubleshooting equipment problems these days — and for contractors maintaining electrical systems they may have once installed — measuring power quality is becoming as much of a necessity as using the clamp ammeter to find out why the overloaded circuits keep tripping.

When any electrical system fails to meet its purpose, it is time to investigate the problem, find the cause, and initiate corrective action. The purpose of the electrical distribution system is to support proper operation of the loads. When a load does not operate properly, the quality of the electric power in the system should be suspected as one possible cause. Whether it’s used for troubleshooting purposes or to obtain baseline data, measuring/analyzing electrical system parameters is called power quality analysis.


  • Measure transient overvoltage waveforms
  • Measure periodical instantaneous voltage drops
  • Measure voltage waveforms when switching to UPS
  • Inspect the Stress on Factory UPS Caused by Voltage Dips
  • Checking the Amount of Electricity Sold in Photovoltaic (PV) Systems
  • Measure the High-Order Harmonic Voltage and Current of Power Lines
  • Power Quality Survey of Solar Power Generation Systems
  • Measure the Noise Generated by Switching Power Factor Improvement Capacitors
  • Measure the Transient Overvoltage in Glowing Fluorescent Lights
  • Measure Lightning-induced Voltage Dips in a Low-Voltage Circuit
  • Measure Voltage Drop Caused by Wiring Impedance