PQube AC Power Monitor. Precision power quality and quantity recorder. Basic accuracy ±0.05%. 4GB memory. 256 samples per cycle. 4 High Voltage AC inputs 2 Analog inputs 1 Digital Input 1 Relay Output.
PQube AC Power Monitor. Precision power quality and quantity recorder. Basic accuracy ±0.05%. 4GB memory. 256 samples per cycle. 4 High Voltage AC inputs 2 Analog inputs 1 Digital Input 1 Relay Output.
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PQube power quality meter-4 AC voltage inputs, 2 analog inputs, 1 digital input, 1 relay output
The PQube is a high-precision power quality and energy monitor. This will record the details of every power disturbance on a removable SD card. The PQube AC power monitor can handle up to 690V, 50/60/400Hz three-phase systems. It will recored voltage dips, swells and interruptions and will give you waveforms and RMS graphs. No software is required, the programming is embedded. The PQube system has been designed to be plug and play so modules are easily added. DIN rail mount or optional panel mount bracket.
| Inputs - Mains Voltage Measuring Channels | |
| Connection | L1, L2, L3, N PQube screw terminals [9], [11], [13], [15] |
| Frequency Range | 40Hz~70Hz and 320Hz ~ 560Hz. Nominal 50Hz, 60Hz, or 400 Hz auto, 320-560Hz manually selected |
| 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) |
| 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 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 | Measurement method ANSI C84.1. Range: 0.0% - 100.0% Accuracy: ±0.1%. |
| THD - voltage | Measurement 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 Flicker | Pinst - average absolute difference between URMS½ 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. |
| 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 | 0~30VAC or ±60VDC (to Earth) max |
| Full Scale | 70VAC, ±100VDC |
| Measurement Channels | AN1-Earth, AN2-Earth, AN1-AN2 |
| 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). 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. |
| 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 (replacement batteries available from PSL) |
| Capacity | 600mAH (30 minutes typical with new, fully-charged battery) |
| Backup period | User controlled. 1 to 10 minutes, 3 minute default. |
| Optional PS1 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 |
| 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% 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 | 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, 10%~90% RH |
| Transient Voltages - 100kHz ring wave | 6 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 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 | Certified - PSL Construction File PQube-001, TUV CB Test Certificate US-TUVR-4368-A2 |
| EMC | Certified - 20080102-01-CE, 20080326-01-RI |
| TUV Bauart-mark | Certified - TUV Report 30880881.009 |
| CT4 | |
| Measurement Type | Pass-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. |
| Burden | less than 0.1VA |
| Conductors | 0.34 inches (8,6mm) max. diameter, 600V UL-recognized insulation required |
| XCT4 | |
| Measurement Type | External current transformer |
| CT input ratio range | 1:1 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. |
| Burden | Less than 0.1VA |
| Wire connection | Min. 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 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 (± 1.17V peak, 3.5V peak, 17.5V peak, and 35V peak) |
| 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) |
| Inputs - Mains Voltage Measuring Channels | |
| Connection | L1, L2, L3, N PQube screw terminals [9], [11], [13], [15] |
| Frequency Range | 40Hz~70Hz and 320Hz ~ 560Hz. Nominal 50Hz, 60Hz, or 400 Hz auto, 320-560Hz manually selected |
| 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) |
| 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 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 | Measurement method ANSI C84.1. Range: 0.0% - 100.0% Accuracy: ±0.1%. |
| THD - voltage | Measurement 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 Flicker | Pinst - average absolute difference between URMS½ 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. |
| 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 | 0~30VAC or ±60VDC (to Earth) max |
| Full Scale | 70VAC, ±100VDC |
| Measurement Channels | AN1-Earth, AN2-Earth, AN1-AN2 |
| 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). 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. |
| 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 (replacement batteries available from PSL) |
| Capacity | 600mAH (30 minutes typical with new, fully-charged battery) |
| Backup period | User controlled. 1 to 10 minutes, 3 minute default. |
| Optional PS1 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 |
| 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% 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 | 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, 10%~90% RH |
| Transient Voltages - 100kHz ring wave | 6 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 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 | Certified - PSL Construction File PQube-001, TUV CB Test Certificate US-TUVR-4368-A2 |
| EMC | Certified - 20080102-01-CE, 20080326-01-RI |
| TUV Bauart-mark | Certified - TUV Report 30880881.009 |
| CT4 | |
| Measurement Type | Pass-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. |
| Burden | less than 0.1VA |
| Conductors | 0.34 inches (8,6mm) max. diameter, 600V UL-recognized insulation required |
| XCT4 | |
| Measurement Type | External current transformer |
| CT input ratio range | 1:1 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. |
| Burden | Less than 0.1VA |
| Wire connection | Min. 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 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 (± 1.17V peak, 3.5V peak, 17.5V peak, and 35V peak) |
| 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) |
