Miro PQ45 (3 Phase + Ground + Neutral)

Product code: IC-PQ45

The Miro PQ45 is a Class A portable power quality analyser that can measure a comprehensive range of power quality parameters. The kit includes voltage leads, temperature probes (1 X ambient, 1 X surface), GPS antenna, DC power supply pack, USB cable, carry bag, soft rubber holster, back plate, fixing strap and magnetic feet.
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Brand: CHK Power Quality
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Alison - 4/9/2023
“Earlier this year I came across Instrument Choice via a google search and was so happy with the help I received!”

The Miro PQ45 is a Class A portable power quality analyser that can measure a comprehensive range of power quality parameters. With it's IP66 rating, the Miro PQA can be installed outdoor in the most severe weather conditions.

The PQ45 has the highest safety rating of all portable power quality analysers - CAT IV 600V. The fourth voltage channel on the PQ45 allows for ground-neutral voltage measurements. The integrated remote communication module (optional) allows the user to access the Miro unit from anywhere in the world, letting them change configurations, download data files, and view all data in real time through the online monitor. The Miro comes with the easy-to-use Citrus software which is equipped with one-click compliance reporting features.
- Certified to IEC61000-4-30, Class A
- Suitable for outdoor use: IP66
- All local (WiFi) and remote communications options (2G/3G/4G) are integrated within the enclosure.
- Highest safety rating of all portable PQA's: CAT IV 600V (PQ45 only)
- Fourth voltage channel
- Mobile application compatible with iOS and Android
- AC and DC voltage and current measurements.
- Isolated voltage inputs (each channel has its own neutral) facilitate various wiring configurations.
- Two temperature ports - for ambient and surface temperature.
- Expansion port allows for system expansion to include additional sensors, input/output controls and custom interfaces which broaden the PQ system platform. Example interfaces include DGA, Hydrogen and Bushing monitors.
- GPS as standard
- 8GB internal memory
- Gapless logging
- Automatically logs on power up
- Powered from phase A or external DC
- Colour LCD screen
- Concurrent logging at multiple log intervals: 10/12 cycles, 150/180 cycles, 10s, 10m, 2h, and user settable.
- Internal backup battery: 5 minutes as standard, with option to extend upon request.
- Various communication platforms:  TCP/IP, FTP, CiDR, DNP3 and WiFi.
- Intuitive and easy to use Citrus software facilitates quick analysis and reporting.
- Onsite data viewing, device configuration, data download and emailing of data files via Smart App using WiFi.
- Holster, bracket, strap and magnetic feet provided for easy mounting to poles and transformers.





Measurement 10/12 cycle rms

Range: 10% to 150% of nominal value with accuracy of +/-0.1% of nominal value under conditions specified in IEC61000-4-30 section 6.1.


Range 50Hz nominal (42.5-57.5)Hz, 60Hz nominal (51.0-69.0)Hz; Full range: (40-70)Hz. Measurement: 10s; Accuracy: +/-5mHz referenced to RTC, +/-1mHz referenced to GPS.


 IEC61000-4-15, 10 minute Pst (short term) and 2hr Plt (long term)

 Dips and Swells

Measurement: 1-cycle rms updated every half cycle. Accuracy: +/-0.2% of nominal value, +/-1 cycle.

Range (magnitude) 0 to 200%.

Range (duration) minimum 0.5 cycles by definition. No upper limit.

 Voltage interruptions

Measurement: 1-cycle rms updated every half cycle. Accuracy: +/- 1 cycle.

Range (duration) minimum 0.5 cycles by definition. No upper limit.

Voltage and current unbalance

Applicable 3 phase systems and evaluated using the method of symmetrical components. Metrics: u2 = (U2/U1) and U0 = (U0/U1). U0, U1 and U2 are sequence components. Range: 0.5% to 5% of U2 and U0. Accuracy: +- 0.15%.

Power meter

Power-kW, Power-kVA, Power-kVAR, True Power Factor (TPF), Displacement Power Factor (DPF). 

Voltage Harmonics/


IEC61000-4-7, Class I (up to 50th harmonic). Range: 10% to 200% of Class 3 electromagnetic environment in IEC 61000-2-4. Metrics: voltage and current magnitude and angle.

51st to 100th: Indication only.

Total Harmonic Distortion (THD)

 IEC61000-4-7, THDS (up to 50th harmonic)

Mains signalling (Ripple amplitude)

Signal: <3kHz, user specified frequency. 20Hz bandwidth (4-nearest-bins method, adjusted automatically to correct for fundamental drift).

Measurement: 10/12 cycle rms amplitude maximum value. Measurement range: 0%-15% of the nominal value.

Detection threshold: >0.3% of nominal voltage, Duration: user defined from 1s to 300s. Trigger input to Ripple capture.


RVC threshold: user defined between 1% and 6% of the nominal value. RVC hysteresis: user defined and < RVC threshold.

Underdeviation / Overdeviation

Separately measure voltages above and below the nominal value. Metrics: RMS-under, RMS-over, %U Under and %U Over. 

Crest factor

Indicates peak-to-rms ratio of waveform. +- 1%. 


Two temperature channels measured each second, recording at adjustable, 10-min and 2-hour intervals.

Measurement: -50 C to +150 C.

Accuracy: +- 1 C. 

File Type Size Created At
Miro+Se..eet.pdf PDF 896.49 KB 1/11/2020, 1:27 PM

Delivery Details

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- Shipped from Instrument Choice on South Australian business days

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