Power Quality Analyzers

A power quality analyzer is a measuring instrument that measures grid events such as voltage sags, voltage swells, interruptions, harmonics, flicker and imbalance using methods defined in the standards and records them with timestamps. It is used at transformer outputs and in main distribution panels to monitor power quality, find the cause of faults and report according to standards such as EN 50160. In this category, the Schneider Electric ION7400 and ION9000 series and the Entes EMK series are offered; DIN rail-mounted, display and displayless models are available. Choose the measurement class (Class A or Class S) by the purpose the report will serve, the mounting style by the panel, the supply voltage by the auxiliary source, and the communication interface by the monitoring software. Class A and Class S are measurement classes defined in IEC 61000-4-30; Class A is used for contractual measurements and Class S for statistical monitoring. It should not be confused with a power network analyzer: a power network analyzer monitors current, voltage, power and energy values, while a power quality analyzer also captures and records short-duration events in addition to these.

Products

How to choose Power Quality Analyzers

A power quality analyzer is a measuring instrument that measures grid events such as voltage sags, voltage swells, interruptions, harmonics, flicker and imbalance using methods defined in the standards and records them with timestamps. It is used at transformer outputs and in main distribution panels to monitor power quality, find the cause of faults and report according to standards such as EN 50160.

  • Take reactive power demand and harmonic distortion levels from site measurements or project calculations.
  • Compare kVAr step sizes, rated voltage and step count against the compensation panel layout.
  • Select capacitor duty contactors, harmonic filter reactors and discharge resistors together with the capacitor bank.

Frequently asked questions

What is Power Quality Analyzers and where is it used?

A power quality analyzer is a measuring instrument that measures grid events such as voltage sags, voltage swells, interruptions, harmonics, flicker and imbalance using methods defined in the standards and records them with timestamps. It is used at transformer outputs and in main distribution panels to monitor power quality, find the cause of faults and report according to standards such as EN 50160.

What should I compare when choosing Power Quality Analyzers?

Choose the measurement class (Class A or Class S) by the purpose the report will serve, the mounting style by the panel, the supply voltage by the auxiliary source, and the communication interface by the monitoring software.

Where can I find technical details for Power Quality Analyzers products?

It should not be confused with a power network analyzer: a power network analyzer monitors current, voltage, power and energy values, while a power quality analyzer also captures and records short-duration events in addition to these.

Power Quality Analyzers Selection Guide: Technical Criteria & Application Standards