PQube Power Quality Analyzer

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PSL PQube 02
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The PQube power quality analyzer is a tiny, user-friendly power quality recorder with built-in power, energy, and carbon emissions monitoring. With the PQube, there is no software required - all recorded data is written directly onto an SD memory card in a number of ready-to-use formats including HTML web pages, spreadsheets (Excel-compatible CSV files), pictures (GIF images, eg for power/energy trends and waveforms on power quality events), text, XML and PQDIF (the IEEE standard for power quality data files.)

New Firmware Upgrades (FREE)

There's new FREE firmware upgrades for your PQubes, too. We've been listening to all your needs, so Firmware 2.0 adds improved IEC flicker measurements, split single-phase power configuration, improved VAR recordings, VAR-hours, and more. You can now double the RMS recording interval for events -- useful for wind turbine standards and FIDVR recordings. You can even set up new brief summary emails, for all you traditional beeper users, or if you need to send alarm emails to managers. All the details at http://powerstandards.com/Download/PQube_2_0_Documentation.zip. The new firmware is FREE, and it's compatible with every PQube in the world.

Key Features

  • Three-phase and single-phase monitoring up to 690V, 50/60/400Hz.
  • Auto power configuration (patent pending).
  • Power Quality monitoring: “Your PQube is like the black box on an aircraft: if anything goes wrong with the power, it records all the details.”
    • Voltage dips, swells, and interruptions – waveforms and RMS graphs.
    • Over-frequency and under-frequency events.
    • 1-microsecond high-frequency impulse detection.
    • THD, TDD, and time-triggered snapshots.
    • Voltage and current unbalance.
    • RMS Flicker – Pinst, PST, PLT.
    • Detailed event recording, plus daily, weekly, monthly trends. Cumulative probability, histograms, and more.
  • Energy monitoring: “The most accurate little monitor on the market. Complete energy information.”
    • Watts, VA, VAR’s, true Power Factor, Watt-hours, VA-hours.
    • Daily and accumulated CO2, and CO2 rate (patent pending).
    • Peaks: single-cycle peak, 1-minute, and 15-minute averages.
    • CT ratios support up to 50,000 amps . PT ratios support up to 6,900,000 volts.
    • Daily, weekly, monthly trends. Load duration curves and more.
  • No software required! The PQube automatically writes these files on a standard digital camera SD card:
    • Spreadsheets: CSV Excel®-compatible files; events, trends, statistics.
    • Pictures: Event and trend/statistics graphs – dual-language picture graphs output directly from PQube in typical GIF format
    • PQDIF: the IEEE’s standard for power quality data files.
    • Text, XML, and HTML summaries: perfect for interfacing with other programs.
  • Easy data retrieval:
    • Sneakernet: Pop out SD card, just like a digital camera, and copy files to your PC.
    • Ethernet:
      • Email for easy approval by IT department. Automatically sends you events, trends, and statistics in the language of your choice.
      • Built-in web server – retrieve meters, files, and more.
      • FTP server for easy file transfer.
      • Modbus-TCP.
  • Additional channels: two analog inputs, one digital input, one relay output, and two temperature-humidity monitoring channels.
  • 256 samples-per-cycle measurements on all channels.
  • About 1 gigabyte per year of data. PQube comes standard with 4-gigabyte SD-card for data storage. Can use 8-gigabyte SD cards.
  • Full color display. 25+ languages, date/time setup, recent events, meters, and more.
  • DIN-rail or panel mount.
  • Built-in Li-Ion UPS. Power from 24 VAC, 24-48VDC, or optional 100~240 VAC power supply.
  • FREE individual NIST calibration certificate for every PQube!

PQube Reviews

Here are some great reviews about the PQube around the industry:


Additional Modules

There are a number of additional plug-in modules available for the PQube that increase it's capabilities.


PS1 AC Power Supply - enables the PQube to be powered by 100~240V AC power

XCT4 Current Transformer Module - enables the PQube to monitor current so that power quality events on current can be detected. Also enables power/energy parameters to be measured. Choose this module where external 5A CTs are to be used.

CT4 Current Sensing Module - enables the PQube to monitor current so that power quality events on current can be detected.Choose this module where 5A secondary CTs are already installed.

ETH1 Ethernet Module - enables network communications (LAN/WAN/Internet) are required for remote access to the meter. Includes built-in automated emails, web server and FTP server.

TH1 Temperature & Humidity Module - enables up to two channels of temperature/RH to be monitored

What's Included:
  • 1 x 4GB SanDisk SD memory card
The Good:


The Bad:


The Bottom Line:

Full Review

Inputs
 Mains Voltage Measuring Channels
   ConnectionL1, L2, L3, N PQube screw terminals [9], [11], [13], [15]
   Frequency Range40Hz~70Hz and 320Hz ~ 560Hz. Nominal 50Hz, 60Hz, or 400 Hz auto, 320-560Hz manually selected
   Mains ConfigurationSingle-phase, delta, wye or star. User selected or auto-selected
   Range of Nominal Input Voltage100VAC~690VAC L-L (69VAC~400VAC L-N) User selected or auto-selected
   Measurement ChannelsLine-to-Neutral, Line-to-Line, Neutral-to-Earth
   Sampling Rate256 samples per cycle, phase-locked to input frequency
   Measurement range0 VAC ~ 900 VAC L-L (520 VAC L-N)
   Accuracy±0.05% rdg ±0.05% FS typical (10% ~ 150% of nominal). Every PQube factory tested at better than ±0.04%rdg ±0.04%FS. Note: FS is based on measurement range.
   RMS measurement methodTrue single-cycle RMS, phase-locked to each channel, updated every 1/2 cycle. URMS˝ per IEC 61000-4-30 Class A. Also 10/12 cycle true-RMS per IEC 61000-4-30 Class A.
   HF Impulse detectionL1-E, L2-E, L3-E. ±450Vpk nominal threshold detected through 2-pole high-pass 4.8 kHz nominal filter. Every PQube factory tested with 1-µsecond 10%-to-90% impulses; trigger required at ±650Vpk, must not trigger ±250Vpk.
   Unbalance - voltageMeasurement method ANSI C84.1. Range: 0.0% - 100.0% Accuracy: ±0.1%.
   THD - voltageMeasurement method: Discrete Fourier Transform of phase-locked 256-samples-per cycle. Range: 0.0% - 100.0% Accuracy: ±0.2% at test waveform having typical harmonic content (5% 5th, 2.5% 7th, 1.5% 9th, and 1% 11th). Samples measured through 6-pole low-pass analog anti-alias filter, 3 dB frequency 4.7 kHz.
   RMS FlickerPinst – average absolute difference between URMS˝ and 1-second RMS, in percent of nominal, multiplied by scaling factor for improved compatibility with Incandescent Flicker in IEC 61000-4-15. PST – mean value of Pinst over previous 10 minutes, synchronized to real-time clock. PLT – mean value of Pinst over previous 2 hours, synchronized to real-time clock. Range 0.0 ~ 20.0 . Accuracy ±0.1.
   IsolationPQube provides more than 7500 VDC isolation to Earth. UL/IEC 61010 reinforced insulation.
   PT Input Ratio Range1:1 to 10000:1
   Installation categoryCAT IV UL/IEC 61010 for voltages up to 300VAC L-N (equivalent to 480VAC L-L), CAT III for higher voltages. Pollution Degree 2
 Analog Input Channels
   ConnectionAN1, AN2 PQube screw terminals [22], [30]
   Nominal Input0~30VAC or ±60VDC (to Earth) max
   Full Scale70VAC, ±100VDC
   Measurement ChannelsAN1-Earth, AN2-Earth, AN1-AN2
   User-specified Input Ratio1:1 to 10000:1
   Sampling Rate12.8kHz or 15.4kHz (measured at same rate as mains voltage measuring channels)
   Accuracy±0.2% rdg ±0.2% FS typical (10% ~ 100% FS). Every PQube factory tested at better than ±0.1% rdg ±0.1% FS AC.
 Digital Input
   ConnectionDIG1 PQube screw terminal [24]
   Rating60VDC to Earth
   Wetting5.4VDC at 3µA
   Threshold1.5V±0.2V with respect to PQube's Earth terminal, with 0.3V hysteresis typical
   Sampling Rate12.8kHz or 15.4kHz (sampled at same rate as mains voltage measuring channels)
 Frequency Measurement
   Range40Hz to 70Hz and 320Hz to 560Hz
   Accuracy±0.01Hz, steady state
   MethodCycle-by-cycle zero-crossing detection on L1-E or L2-E (auto-selected). Firmware phase-locked for frequency slew rate up to 5 Hz/sec. For 50/60 Hz, measured through an 9-pole low-pass analog filter, 3 dB frequency 76 Hz. For 400 Hz, measured through 7-pole low-pass filter, 3 dB frequency 1 kHz. Poles and 3 dB frequency are auto-selected based on nominal frequency.
 Optional Current Measuring Modules
  CT4
   Measurement TypePass-through (built-in current transformers)
   Accuracy±0.2% rdg ±0.2% FS typical (10% ~ 120% FS). Every PQube factory tested at better than ±0.15% rdg ±0.15% FS.
   Burdenless than 0.1VA
   Conductors0.34 inches (8,6mm) max. diameter, 600V UL-recognized insulation required
  XCT4
   Measurement TypeExternal current transformer
   CT input ratio range1:1 to 10000:1
   Accuracy - excluding external CT's±0.2% rdg ±0.2% FS typical (10% ~ 120% FS). Every PQube factory tested at better than ±0.15% rdg ±0.15% FS.
   BurdenLess than 0.1VA
   Wire connectionMin. 20AWG (0,52 mm2), Max. 14AWG (2.1mm2). 600V UL- recognized insulation required
  XCT4-0.333V-00, XCT4-1V-00, XCT4-5V-00, and XCT4-10V-00
   Measurement TypeExternal current transformer
   CT input ratio range1:1 to 10000:1
   Nominal0.333V RMS, 1V RMS, 5V RMS, and 10V RMS
   Crest Factor3.5 (± 1.17V peak, 3.5V peak, 17.5V peak, and 35V peak)
   Sampling Rate12.8kHz or 15.4kHz (measured at same rate as mains voltage measuring channels)
   Accuracy - excluding external CT's±0.2% rdg ±0.2% FS typical (10% ~ 120% FS). Every PQube factory tested at better than ±0.1% rdg ±0.1% FS.
   Wire connectionMin. 20AWG (0,52 mm2), Max. 14AWG (2,1mm2). 600V UL- recognized insulation required
   Max screw torque5 inch-pounds (0,6Nm)
 Instrument Power
  Screw Terminals(AC or DC) PQube POWER screw terminals [23], [31]
   AC Input24VAC ± 20% 50/60 Hz
   DC Input24-48VDC ± 20% (polarity independent)
   Power Required5VA max
  Internal UPS
   TypeLithium Polymer Battery (replacement batteries available from PSL)
   Capacity600mAH (30 minutes typical with new, fully-charged battery)
   Backup periodUser controlled. 1 to 10 minutes, 3 minute default.
  Optional PS1 Plug-in Module
   AC Input100~240VAC ± 10%. 50/60 Hz
   Power Required25VA max
   IsolationModule provides more than 3200VDC isolation to all other circuits
 Power measurements
  Definitions
   Watts (power)Sum of true instantaneous per-phase power
   Volt-Amps (apparent power)Sum of per-phase product of RMS voltage and RMS current, taken over the measurement interval
   Power Factor (tPF)True power factor – ratio of Watts to Volt-Amps.
   VAR’s (volt-amps reactive)Budeanu definition
   Carbon (CO2 rate and accumulated)Based on patent-pending algorithm using watts and user-selected proportions of generator sources, and user-supplied carbon generation rates for each source.
   Current unbalanceMeasurement method ANSI C84.1.
  Accuracy excluding external CT’s
   Watts (power)±0.2% at unity power factor, nominal voltage, 20% ~ 100% FS current. Class 0.5 ANSI C12.20-1998. Better than ±0.25% rdg ±0.25% FS (10% ~ 120% FS), for phase angle Θfundamental = ±30° (angle between fundamental voltage and fundamental current). Accuracy calculation: sum of voltage accuracy, plus current accuracy, plus phase angle correction which is guaranteed less than ±0.025% x (1 / cos(Θfundamental)).
   Volt-Amps (apparent power)Better than ±0.25% rdg ±0.25% FS typical (10% ~ 120% FS)
  Measurement interval
   Measurement intervalPhase-locked, 10-cycles (50 Hz nominal) or 12-cycles (60 Hz nominal). Approximately 5 readings per second. Actual readings per second dependent on actual frequency.
 Operating Environment
   Ambient Conditions – Operating-20°C ~ 50°C, 10%~90% RH
   Transient Voltages - 100kHz ring wave6 kV pk, IEC 61180, IEC 61000-4-5. Applied to voltage measuring terminals with Performance Evaluation Class 1. (When applied to optional power supply mains terminal, supply’s fuse may operate in PE Class 3 at test levels greater than 4 kV.)
   EFT Burst Immunity4 kV pk, IEC 61000-4-4, Performance Evaluation Class 1. Applied to power measuring terminals and optional PS1 power supply mains terminals
   RF Field Strength Immunity3V / m, IEC 61000-4-3 Test Level 2
   Magnetic Field Strength Immunity30A / m, IEC 61000-4-8 Test Level 4
   Ingress Protection Rating (IP Rating)IP20H, IEC 60529
 Agency Approvals and Listings
   UL (Underwriters Laboratories)UL-recognized, cULus – File Number E220936
   RoHSCertified – PSL Construction File PQube-001
   CECertified – PSL Construction File PQube-001, TUV CB Test Certificate US-TUVR-4368-A2
   EMCCertified – 20080102-01-CE, 20080326-01-RI
   TUV Bauart-markCertified – TUV Report 30880881.009

PQube Report Writer

PSL Engineering has invested over a year developing the amazing PQube Report Writer, and we're releasing it to you and your customers. The price? FREE. (We're not generous - we just want to help you sell more PQubes.)

This easy-to-use Windows program uses PQube recordings to write a Compliance Report in Microsoft Word. It comes with the EN50160 Standard built in, but you can easily add your own standards. And it comes with English, French, German, Polish, Portuguese, and more - you can easily add your own language too.

Popularity: 31.30%
Customer Ratings: 5.0 of 5 (1 reviews)
Recommended: YES: 1  |  NO: 0
PQube tells all
Unicorner RECOMMENDS THIS PRODUCT
October 12, 2009

The Good:
LOTS of useful info

The Bad:
Haven't found any

The Bottom Line:
Highly recommend if you suspect supply line problems (or even if you don't)
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