Power Quality Analyzers - Diagnosing Symptoms

Regardless of the type of instrumentation needed for a particular test, there are a number of important factors which should be considered when selecting an instrument. Some of these include:

  • Number of channels (voltage and/or current)
  • Temperature specifications of the instrument
  • Ruggedness of the instrument
  • Input voltage range (e.g. 0-600 Volts)
  • Power requirements
  • Ability to measure three-phase voltages
  • Input isolation (isolation between input channels, and from each input to ground)
  • Ability to measure currents
  • Instrument housing (portability, rack-mount, etc.)
  • Ease of use (user interface, graphics capability, etc.)
  • Documentation
  • Communication capability (modem, network interface, and the like)
  • Analysis software

The flexibility of the instrument is also important. The more functions a single instrument can perform, the fewer instruments will be required.