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Model PQube-02-0001-XX Specifications

Reference conditions for factory tests: 19~25°C, 15%~50% RH, steady-state 10/12 cycle signals. ±1/2 display count on all accuracies

Mains Voltage Measuring Channels
Connection L1, L2, L3, N PQube screw terminals [9], [11], [13], [15]
Range of Frequency Measurement 40Hz~70Hz and 320Hz ~ 560Hz. Nominal 50Hz, 60Hz, or 400 Hz auto, 320-560Hz manually selected. Specifications below apply at 50 or 60Hz.
Mains Configuration Single-phase, delta, wye or star. User selected or auto-selected
Range of Nominal Input Voltage 100VAC~690VAC L-L (69VAC~400VAC L-N) User selected or auto-selected
Measurement Channels Line-to-Neutral, Line-to-Line, Neutral-to-Earth
Sampling Rate 256 samples per cycle, phase-locked to input frequency
Measurement range 0 VAC ~ 900 VAC L-L (520 VAC L-N)
Bandwidth DC to 4.7 kHz, must be locked to mains frequency (see above). For higher bandwidth see HF Impulse.
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 = 345 VAC or 520 VAC, selected based on nominal line-to-earth voltage.
RMS measurement method True single-cycle RMS, phase-locked to each channel, updated every 1/2 cycle. URMS½ per IEC 61000-4-30 Class A. Also 10/12 cycle true-RMS per IEC 61000-4-30 Class A.
HF Impulse detection L1-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 – voltage ANSI, IEC, and GB measurement methods. Range: 0.0% ~ 100.0%. Accuracy equivalent to rms voltage specification applied to measurement method.
THD – voltage Measurement method: Discrete Fourier Transform of phase-locked 256-samples-per cycle. Range: 0.0% – 100.0% Accuracy: ±0.2% at 60-Hz 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.
Flicker ±5% rdg at all reference points on the eye-response curve defined in IEC 61000-4-15 for PST≥1.
Harmonics and Interharmonics Range: 0% ~ 100% of fundamental, measured up to the 63rd order (harmonics displayed up to the 50th order).
Harmonic Accuracy IEC 61000-4-7:2002 Class II, typical, up to the 50th order, for units manufactured after February 2010.
Isolation PQube provides more than 7500 VDC isolation to Earth. UL/IEC 61010 reinforced insulation.
PT Input Ratio Range 1:1 to 10000:1
Installation category CAT 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
Connection AN1, AN2 PQube screw terminals [22], [30]
Nominal Input High range: 0 ~ 30 VAC or ±60 VDC to Earth max. Low range: 0 ~ 7VAC or ±10VDC to Earth max.
Input Impedance 800 kΩ to Earth
Full Scale 70VAC, ±100VDC
Measurement Channels AN1-Earth, AN2-Earth, AN1-AN2. DC Energy Mode adds DC Power and DC Energy.
User-specified Input Ratio 1:1 to 10000:1
Sampling Rate 12.8kHz or 15.4kHz (measured at same rate as mains voltage measuring channels)
Accuracy ±0.2% rdg ±0.2% FS typical (10% ~ 100% FS), ANx-Earth. Every PQube factory tested at better than ±0.1% rdg ±0.1% FS AC.

Digital Input
Connection DIG1 PQube screw terminal [24]
Rating 60VDC to Earth
Wetting 5.4VDC at 3µA
Threshold 1.5V±0.2V with respect to PQube’s Earth terminal, with 0.3V hysteresis typical
Sampling Rate 12.8kHz or 15.4kHz (sampled at same rate as mains voltage measuring channels)

Frequency Measurement
Range 40Hz to 70Hz and 320Hz to 560Hz
Accuracy ±0.01Hz, steady state
Method Cycle-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
CT4-20A-00
Measurement Type Pass-through (built-in current transformers)
Crest Factor 3.5 (±70 amps instantaneous for CT4-20A, ±350 amps instantaneous for CT4-50A)
Sampling Rate 12.8 kHz or 15.4 kHz (sampled at same rate as mains voltage measuring channels)
Accuracy ±0.2% rdg ±0.2% FS typical (10% ~ 120% FS). Every PQube factory tested at better than ±0.15% rdg ±0.15% FS.
Burden less than 0.1VA
Conductors 0.34 inches (8,6mm) max. diameter, 600V UL-recognized insulation required
XCT4-1A-00, XCT4-5A-00
Measurement Type External current transformer
CT input ratio range 1:1 to 10000:1
Crest Factor 3.5 (±3.5 amps instantaneous for XCT4-1A, ±17.5 amps instantaneous for XCT4-5A)
Sampling Rate 12.8 kHz or 15.4 kHz (sampled 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 ±0.15% rdg ±0.15% FS.
Burden Less than 0.1VA
Wire connection Min. 20AWG (0,52 mm2), Max. 14AWG (2.1mm2). 600V UL- recognized insulation required
Max screw torque 7 inch-pounds (0.8N-m)
XCT5-0.333V-00, XCT5-1V-00, XCT5-5V-00, XCT5-10V-00, and CTE1
Measurement Type External current transformer
CT input ratio range 1:1 to 10000:1
Nominal 0.333V RMS, 1V RMS, 5V RMS, and 10V RMS
Crest Factor 3.5 (±1.17Vpk, ±3.5Vpk, ±17.5Vpk, and ±35Vpk)
Sampling Rate 12.8kHz 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 connection Min. 20AWG (0,52 mm2), Max. 14AWG (2,1mm2). 600V UL- recognized insulation required
Max screw torque 5 inch-pounds (0,6Nm)

Instrument Power
Screw Terminals (AC or DC) PQube POWER screw terminals [23], [31]
AC Input 24VAC ± 20% 50/60 Hz
DC Input 24-48VDC ± 20% (polarity independent)
Power Required 5VA max
Internal UPS
Type Lithium Polymer Battery – UL recognized (replacement batteries available from PSL)
Capacity 660mAH (30 minutes typical with new, fully-charged battery)
Backup period User controlled. 1 to 10 minutes, 3 minute default.
Optional PS1, PS2 Plug-in Module
AC Input 100~240VAC ± 10%. 50/60 Hz
Power Required 25VA max
Isolation Module 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 or fundamental VARs—user-selectable.
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 unbalance Measurement method ANSI C84.1.
Accuracy excluding external CT’s
Watts (power) ±0.2% typical at unity power factor, nominal voltage, 20% ~ 100% FS current. Better than ±0.25% rdg ±0.25% FS plus error due to phase angle uncertainty (<1.5° typical) for Θfundamental < ±30°, nominal voltage, 10% ~ 120% FS current. Θfundamental = angle between fundamental voltage and fundamental current.
Volt-Amps (apparent power) Better than ±0.25% rdg ±0.25% FS typical (10% ~ 120% FS)
Measurement interval
Measurement interval Phase-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, RH 5% ~ 95% RH non-condensing
Transient Voltages 100kHz ring wave, 6 kVpk, 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 Immunity 4 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 Immunity 3V / m, IEC 61000-4-3 Test Level 2
Magnetic Field Strength Immunity 30A / 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
RoHS Certified – PSL Construction File PQube-001
CE Declaration of Conformity Certified – PSL Construction File PQube-001, TUV CB Test Certificate US-TUVR-4368-A2
ITC Certified – 20080102-01-CE, 20080326-01-RI
TUV Bauart-mark Certified – TUV Report 30880881.009
ABS Shipyard Certified – 2009 Steel Vessels Rules 1-1-4/7.7, 4-8-3/Table 2, 2008 MODU Rules: 43-3-3/Table 1

Power Standards Lab
980 Atlantic Ave.
Alameda, California 94501

contact@powerstandards.com
TEL: ++1.510.522.4400
US: 1.888.SEMI.F47 or 1.888.736.4347

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