Unilyzer 900c

Power quality analyzer

Unilyzer 900c is the little brother to our unique portable instrument Unilyzer 900. Unilyzer 900c is a cost effective alternative for those who do not measure on a continuous basis or who need a larger amount of instruments. The instrument complies with IEC 61000-4-30 Class S. Like its big brother, the 900c has integrated Wi-Fi and IP65 rating to withstand rough environments.

The innovative design includes integrated Wi-Fi and a free App available at Google Play for real time monitoring and remote download. Climbing up the pole or entering a danger zone is no longer required to read your data, just connect with your laptop or Android smartphone/tablet while still in your car. Ease of use and safety cannot be higher. The instrument is light weight – only 700g and fits in your hand.

Examples of measured parameters:

  • Voltage (and current) variations
  • Sags and swells
  • Flicker levels
  • Harmonics
  • Unbalance
  • Transformer monitoring


Unilyzer 900c is designed for electric power distribution companies to investigate customer complaints but it can be used by anyone wanting to troubleshoot problems or to do optimisations in the power network. Areas of application are:

  • Customer complaints
  • Power Quality troubleshooting
  • Delivery point norm compliance
  • Grid Code measurements
  • Energy savings
  • Load analysis
  • Fault and transient recording
  • Quality of supply

Plug and play

Just load a pre-defined setting and you are up and running immediately. The display gives you valuable information, and it simultaneously allows you to modify settings.


Its small size together with the IP65 protection and ruggedness makes Unilyzer 900c an ideal tool for all field measurements. It has no moving parts and has been tested in real, tough environments. The instrument complies with IEC 61000-4-30 Class S for Power Quality measurements, which guarantees highest reliability in every advice and conclusion. Its standard memory allows data to be stored for 3 months. In case of a power failure it has an internal battery backup keeping the instrument going.

Integrated Wifi

The instrument has integrated Wi-Fi. You easily connect to Unilyzer 900c from any computer or smartphone. Use your Android smartphone or tablet to check the voltage in an easy, safe and hassle-free way.

More features

  • Gapless measurements and algorithms in accordance with IEC 61000-4-30 Class S
  • Measures power and energy in all 3-phase Wye and Delta configurations
  • Unique method for data compression and storage saving memory usage and thus saving transfer times and costs
  • 170 days of measurements with 32 MB standard memory

Real-time possibilities

Independent of measurement mode, realtime values are shown on the display and can be read from an external PC or via modem simultaneously. Evaluation of voltage sags with norm classification according to different standards and planning levels.

Evaluation and analysis

The powerful evaluation software PQ Secure is included. The Unilyzer 900c can be integrated into a full size PQ Secure PQ Management System allowing full automatic PQ administration and analysis.


All accessories are designed for practical field use from years of experience. Small, flexible Rogowski type clamps for currents up to 5000A available as well as magnetic core clamps. Transducers have automatic range and type identification (no user action needed). There is a variety of practical instrument bags available that are approved as cabin baggage on airplanes. Highly appreciated magnetic holder available for electrical cabinets.

Power Quality: Prevent – Analyze – Follow up

Don’t hesitate to contact us!

Let us become your power quality partner. Contact us at Unipower and let us help you reach your power quality and monitoring goals.