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Power

Disturbances

Harmonics

PQ-Box 100 Power Quality Analyzer

KEY FEATURES:

Shockproof, IP 65 waterproof enclosure. Operating temperature range -20 deg C to +70 deg C

LCD screen for verification of correct connection and for use as portable field harmonic and power analyzer

24 bit resolution for detailed analysis, with accuracy of <0.1 %

Compact lightweight design (1.7 kg)

4 voltage channels (0-480 Vac/dc)(800V L-L) (measures L-L, L-N, L-G, N-G)

4 current channels, via CT clamps. Standard mini current clamps (100 mA to 22 A, 1-22 A switchable) or standard Rogowski current clamps (1-2650 A). Other CT’s available.

Universal power supply (100-280 Vac, 140-220 Vdc), with internal battery

USB high speed download with free analysis software (Windows XP, Windows 7)

2 GB of built in memory – able to log for over 12 months! Setup and operation: The PQ-Box 100 can be set up in the office via PC software and then activated at site with one key press. Alternatively the PQ-Box 100 can be set up in the field using the front panel control keys. The LCD display provides a means of verifying correct field connection during installation eliminating embarrassing mistakes. For quick operation, default thresholds per IEC 50160 can be used or user selected thresholds can be implemented when required. 2 GB of on-board non-volatile memory is sufficient to store over 12 months* of event data. Data can be downloaded at site or back at the office via a PC using USB connection and PQ-Box 100 software. * Using 10 minute EN 50160 settings. Maximum recording period will be reduced by the number of “event” captures.

Introduction to data recording features: The PQ-Box 100 combines multiple recording functions to provide overview and detailed data via PC for reporting and analysis:

In addition to the wide range of instantaneous measurements available, the average values over a user defined “measuring intervals” (1 second to 30 minutes) are stored and available displayed via the PC as line graphs. 10 ms rms Max/Min values are also recorded for frequency, voltage, current and power

“Events” are captured when values exceed a user selected threshold:

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o “Limit events” are recorded as time stamped text records for slow voltage changes, fast voltage changes, frequency shifts, flicker, voltage unbalance, voltage THD or specific voltage harmonic limits

o “Oscilloscope events” are high speed waveform recordings of voltage and current triggered by voltage and current change events (several flexible triggering options are provided, including threshold, inrush, waveshape or timed interval). Pre-triggering and recording time are user adjustable

o “10 ms RMS events” provide an alternative view to oscilloscope events. The half cycle RMS value of voltage and current are recorded and reported in a line graph. 10 ms RMS events have separate threshold settings and separate pre-triggering and recording settings

o Ripple control signals can be recorded as long term or high speed data Instantaneous measurements include:

PQ-Box 100 LCD

Via PQ-Box 100 PC software

Voltage (true RMS per phase) Current (true RMS per phase) Frequency Active power (per phase and total). Directional information available Reactive power (per phase and total). Directional information available Apparent power (per phase and total). Power factor (per phase and total) Voltage total harmonic distortion (per phase) Current total harmonic distortion (per phase) Flicker – short term (per phase) Flicker – long term (per phase) Phase angle & cos phase angle Voltage symmetry, positive, negative and zero sequence Individual voltage harmonics 1 to 50 Individual current harmonics 1 to 50 Interharmonics (voltage and current to 50th harmonic) Oscillograph view and spectrum analysis

Harmonic direction (voltage and current to 50th harmonic)

Phasor diagram

Power triangle (P, P50, S, S50, Q, Q50 & Distorted reactive power)

Typical PQ-Box 100 screen showing instantaneous measurements.

Number of events Recording duration

V/I/f measurement

vaes

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Examples of instantaneous data available via USB connected computer.

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Recorded measurements: At the end of each measuring interval the PQ-Box 100 records the maximum, minimum and average values of frequency, voltage, current and power. Average values are recorded for all other measurements. Over 360 different values (frequency, voltage, current, power and energy) can then be graphed via the PQ-Box 100 PC software for analysis. While IEC 50160 specifies a 10 minute measuring interval, this can be set between 1 second and 30 minutes.

Example display of voltage, current & frequency data.

Limit event recording: Time stamped text records are used for Limit events such as fast voltage changes, frequency shifts, flicker, voltage unbalance, voltage THD or specific voltage harmonic limits. Upper and lower limits can be set for slow/fast voltage changes and frequency. Upper limits can be set for voltage unbalance, long term flicker, voltage THD and individually up to the 50th harmonic.

Example of limit event recording.

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Oscilloscope events: Waveform recordings of voltage and current are triggered by voltage and current change events (selectable upper/lower threshold and step limits). Pre-triggering and recording time are user adjustable

Example of oscilloscope event.

10ms RMS events: The half cycle RMS value of voltage and current are recorded in a line graph. 10ms RMS events have separate upper/lower and step threshold settings together with pre-triggering and recording time settings. The RMS recorder also records Power, Apparent Power, Reactive Power and Frequency values.

Example of 10ms RMS event.

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Ripple Control: The PQ-Box 100 can capture ripple control information via permanent recording (“U eff R”), and via the

new “Ripple Control Signal Analysis” option. The standard PQ-Box 100 records a permanent recording

of the desired frequency as a 200 ms signal, and shows data as a percentage of nominal voltage. Using a

200 ms evaluation window, the PQ-Box 100 undertakes an FFT analysis and records the peak signal

amplitude of the preselected frequency. At the end of the measuring interval (e.g. 10 minute measuring

interval) the amplitude, time and date of the single largest 200 ms value is recorded.

Example of ripple signals over time (U eff R).

With PQ-Box 100’s with Ripple Control Signal Analysis Option (+S versions) a high speed recorder for

monitoring ripple control signals can be enabled in addition to U eff R recording. This monitors the

selected frequency range (frequency + bandwidth) and if the signal exceeds the set minimum amplitude

threshold, the high speed recorder is started for the “Recorder time” duration. Data is recorded with 10

ms resolution, allowing pulse encoding to be reviewed.

High speed ripple control recording option.

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Overview Reporting: A graphical summary view of events is provided to enable an overview of the interrelation of the separate event reports.

Example of overview data.

EN 50160 Reporting: To provide a quick overview of power quality during the recording period an EN 50160 style report shows the 95 % value and 100 % values of primary measurements versus acceptable thresholds. Any data “over the line” represents unacceptable quality.

Example of EN50160 reporting.

Software:

Windows XP, Vista and Windows 7 compatible, multiple user licence with free upgrades

USB port required for connection to PQ-Box 100

Supports USB 2.0 high speed data transfer PQ-Box 100 software supports the set up of the PQ-Box 100, downloading, storage and evaluation of data. Event data can be zoomed, scaled and compared to other records. Software is supplied free with the PQ-Box 100. Recommended configuration and options:

The PQ-Box 100 is only available with four voltage and 4 current inputs

The PQ-Box 100 can be supplied in three versions. “Basic” which offers permanent recording, i.e. data logging. “Light ” version which adds EN 50160, 2-50th harmonic and manual trigger functions. “Expert” version for full functionality with high speed disturbance recording. Basic and Light versions can be field upgraded

Expert Option with Ripple Control Option is recommended

High accuracy mini CT switchable clamp (100 mA to 22A and 1 A to 200 A) and high accuracy Rogowski current clamps (1-2650 A)

Hard transport case, magnetic probes and fused voltage leads

Ph 04 387 7339 PO Box 14 385 Kilbirnie Wellington 6241 Email: sales@hvpowerautomation.com Web: www.hvpowerautomation.com