Power quality surveys and harmonic analysis

Equipment specified by trial and error is expensive. We specify from recorded evidence.

We record the incomer and the failing machines long enough to catch the events, then tie each one to its source.

What the survey covers

1. Survey plan and site inspection
2. Monitoring and recording
3. Analysing each event to find its source
4. A report with summary, event detail and recorded data
5. A recommended solution

Instruments and standards

• ELSPEC PA 102, Dranetz BMI, Fluke and Tektronix analysers
• Measurement to IEC 61000-4-30 Class A
• Supply voltage quality assessed against EN 50160
• Flicker measured to IEC 61000-4-15
• Transient, flicker and compliance analysis

Harmonic studies and energy audits on the ELSPEC PA 102 true-RMS analyser.

It measures every parameter in every cycle, so it catches fast variations slower instruments miss. Results come as tables, histograms and waveforms across nine channels.

Measurement capability

• Two loads at once: three current channels for each load plus three voltage channels
• THD and individual harmonics 1 to 31 of current, voltage, active and reactive power
• True-RMS measurement across a wide dynamic range, including high accuracy at low values
• Maximum and minimum demand, with bidirectional power and energy flow
• Galvanic isolation of all inputs through current and voltage transformers
• RS-422/485 communication for remote measurement and control