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Reference conditions for factory tests:19~25°C, 10%~70% RH

MAINS VOLTAGE MEASURING CHANNELS
Mains voltage channels 3× Line-to-Neutral, 3× Line-to-Line, 3× Line-to-Earth, 1× Neutral-to-Earth
Power configuration / Range of nominal input voltage Single-phase – 69 VAC ~ 480 VAC (L-N)
Split-single-phase – 50 VAC ~ 480 VAC (L-N) and 100 VAC ~ 960 VAC (L-L)
3 phase wye/star – 50 VAC ~ 480 VAC (L-N) and 100 VAC ~ 830 VAC (L-L)
3 phase delta – 100 VAC ~ 600 VACPower configuration and nominal voltages can be user-selected or auto-selected.
Voltage measurement range 0 VAC ~ 750 VAC (L-N) and 0 VAC ~ 1300 VAC (L-L)
Magnitude accuracy
(±% rdg  ±% FS)
Typical 100% Factory Test Pass/Fail limit Specification
±0.01% ±0.025% ±0.05%
10VAC-750VAC L-N, 50/60 Hz.
Voltage fundamental angle accuracy (relative to L1-E channel)
Typical 100% Factory Test Pass/Fail limit Specification
±0.002° ±0.002° ±0.01°
Sub-sample analog angle calibration
Calibrated ±0.01 sample resolution 50/60 Hz.
All specifications relative to L1-E angle, at nominal voltage. Typical and factory specifications are limited by system resolution.
Range of nominal frequencies 16.67 Hz, Nominal 50 Hz, 60 Hz, or 400 Hz auto-selected
Simultaneous
sampling rates
Sampling Rate Notes
50/60 Hz 512 Samples per cycle ·    Phase-locked to frequency on reference channel (L1-N or L1-L2)

·    Simultaneous sampling on all voltage, current, analog and digital input channels

·    Fully certified to IEC 61000-4-30 Class A Ed. 3 and Class 0.2 revenue meter accuracy

High-Frequency
Impulse
4.0 MHz ·    ±6 kV measurement range

·    4 MHz on L1-E channel only or 1 MHz on 4 channels (L1-E, L2-E, L3-E, N-E), user-selected

·    Measured through 1.5 kHz 2-pole high-pass filter

·    Fully compatible with ANSI/IEEE C62.41, C3 and B3 combination wave, ring wave and IEC 61000-4-5 waveforms

2 kHz-150 kHz
Emissions
1.0 MHz ·    ±60 V measurement range, 12-bit min/avg/max recording

·    4 channels, 2 kHz bins

·    Filters per IEC 61000-4-30 Ed. 3

Frequency measurement range 13.3 Hz ~ 23.3 Hz, 40 Hz ~ 70 Hz and 320 Hz ~ 560 Hz
Input impedance 4.8 MΩ || 7.33 pF to Earth per phase
Physical connection L1, L2, L3, N, E pluggable screw terminal block (max torque 5 inch-pounds (0,6 Nm))
Wire connection Minimum wire size 20 AWG (0,52 mm2), maximum 14 AWG (2,1 mm2)
600 V UL-recognized insulation required.

CURRENT INPUT CHANNELS
Measurement channels 8 inputs : I1, I2, I3, I4, I5, I6, I7, I8 (typically used as L1, L2, L3, N, E, I6, I7, I8)
Nominal input (Full scale) 1A, 5A, 20A… 300A, 400A…6000A ranges available through CTs
3000A available through Flexible current sensors
Nominal for the CT outputs: 0.333 Vrms (Low range) or 3.33 Vrms (High range) – user selected.
Crest factor 3.5 (±1.17 Vpk) (Low range) or 3.0 (±10 Vpk) (High range)
Magnitude accuracy – including PSL Ultra-Precise calibrated shielded split-core current sensors

(±% rdg ±% FS)

Typical Factory-generated CT calibration table: additional uncertainty Specification At 50/60 Hz, 2.5% FS ~120% FS

Additional uncertainty is the uncertainty due to the Factory CT Calibration System, plus uncertainty due to the resolution of the entries in the CT-specific Calibration Table and the algorithms for applying the CT-specific Calibration Table.

±0.05% ±0.035% ±0.1%
Angle accuracy – including PSL Ultra-Precise calibrated shielded split-core current sensors
Typical Factory-generated CT calibration table: additional uncertainty Specification  

Sub-sample analog angle calibration

Calibrated to ±0.01 sample resolution at 50/60 Hz.

All channels calibrated relative to L1-E angle.

±0.07° ±0.08° ±0.1°
Magnitude accuracy excluding external CT’s

(±% rdg ±% FS)

Typical 100% Factory Test Pass/Fail limit Specification  

 

 

At 50/60 Hz, 2.5% FS ~120% FS

±0.01% ±0.025% ±0.05%
Angle accuracy – excluding external CT’s
Typical 100% Factory Test Pass/Fail limit Specification  

 

All specifications are relative to L1-E, at nominal voltage and current.

Typical and factory specifications are limited by system resolution.

±0.002° ±0.002° ±0.01°
Sampling rate Same rate as mains voltage measuring channels
Input impedance/burden 33.3 kΩ
< 1 VA for CTs
CT ratio range 1:1 to 50000:1
Physical connection Interfaces with External CT (current transformer) with voltage-type secondary or Flexible current sensors

5 or 8 pairs of pluggable screw terminals (Max torque 2 inch-pounds (0,25 Nm))

Wire connection Connections to feeder wires are done by clamping on split-core CTs around the feeder.

Connection of the CT voltage output to the PQube 3 input terminal:
Min wire size 28 AWG (0,8 mm2), Max. 16 AWG (1,31 mm2). 600V UL- recognized insulation required.

 

ANALOG INPUT CHANNELS
Measurement channels User-selected Standard Mode or DC Energy Mode
Standard mode: AN1-E, AN2-E, AN3-E, AN4-E (common mode), AN1-AN2, AN3-AN4 (differential mode)
DC Energy mode: AN1×AN2, AN3×AN4 (bi-directional DC power), AN1×AN2×hours, AN3×AN4×hours (DC Energy)
Nominal input (Full scale) High range: ±60 VDC to Earth. Low range: ±10 VDC to Earth.
Measurement range High range: ±100 VDC, Low range ±10 VDC.
Accuracy ±0.05% rdg ±0.05% FS typical (1% ~ 100% FS), ANx-E
Internal pull-up voltage 2.5 VDC
Analog ratio range 1:1 to 10000:1
Input impedance 1 MΩ to Earth
Physical connection Pluggable screw terminals (Max torque 2 inch-pounds (0,25 Nm)) AN1, AN2, AN3, AN4 and Earth

DIGITAL INPUT CHANNEL
Rating Typical 3.3 VDC, 5 VDC, 24 VDC. Maximum input 60 VDC (differential input)
Wetting 2.2 VDC typical. Can be used with NC or NO dry contacts.
Digital threshold 1.5 V ±0.2V with 0.1 V hysteresis typical.
Sampling rate Same rate as mains voltage measuring channels
Input impedance >1MΩ
Physical connection Pluggable screw terminals (Max torque 2 inch-pounds (0,25 Nm)) DIG1+ and DIG1-

SIGNAL OUTPUT RELAY
Connection RLY1 pluggable screw terminals standard
Rating 30 VAC/30 VDC, 300 mA max
Function When PQube 3 is off, normally open. When PQube 3 is on, normally closed. Contacts open for duration of event or 3 seconds (whichever is longer).
Operate time 20 milliseconds

POWER MEASUREMENTS
Definitions
    Watts (power) Sum of true instantaneous per-phase bi-directional power, taken over the measurement interval.
    Volt-Amps (apparent power) Sum of per-phase product of RMS voltage and RMS current, taken over the measurement interval.
    Power factor True power factor-ratio of Watts to Volt-Amps
    VARs (volt-amps reactive) Fundamental VARs on L1, L2, L3 and total
Inputs
    Voltages L-N, or L-Nm for delta configurations. Nm defined as measurement neutral, the instantaneous mean of the three L-E voltages.
    Currents L1, L2, L3
    Measurement interval Phase-locked, 10-cycles (50 Hz nominal) or 12-cycles (60 Hz nominal).
Accuracy including PSL
Ultra-Precise current sensors
    Watts (power) ±0.1% rdg typical at unity power factor, nominal voltage, 10% ~ 100% FS current.

±0.2% rdg typical at 0.5 power factor, nominal voltage, 10% ~ 100% FS current.

Watt-hours (energy) Accuracy certified to ANSI C12.20 Class 0.2 and IEC 62053-22 Class 0,2S

CLASS A POWER QUALITY MEASUREMENTS – IEC 61000-4-30 Ed. 3 Class A, full compliance certification
Frequency Range 14 Hz ~ 20Hz, 40 Hz ~ 70 Hz and 320 Hz ~ 560 Hz, Accuracy ±0.01 Hz, steady state
Voltage amplitude Range 10% ~ 200% of nominal – Accuracy ±0.1% Udin (Udin = 120 V, 230 V)
Method: True single-cycle RMS, phase-locked to each channel, updated every ½ cycle. URMS½ per IEC 61000-4-30 Class A. Also 10/12 cycle true-RMS per IEC 61000-4-30 Class A.
Flicker Pinst, Pst, Plt fully compliant and certified to IEC 61000-4-15 Ed. 2 Class F1
Voltage dips/swells/interruptions Fully compliant and certified to IEC 61000-4-30 Ed. 3 Class A, Accuracy ±0.2% of nominal voltage, duration accuracy : ±½ cycle at beginning of event and ±½ cycle at end of event, hysteresis selectable
Rapid voltage changes (rvc) Fully compliant and certified to IEC 61000-4-30 Ed. 3 Class A – Accuracy 0.2%
Unbalance Fully compliant and certified to IEC 61000-4-30 Ed. 3 Class A
Range 0.0% ~ 999.9%, method of symmetrical components, accuracy ±0.15%
Voltage harmonics and interharmonics Fully compliant and certified to IEC 61000-4-30 Ed. 3 Class A
Range 10% ~ 200% of Class 3 of IEC 61000-2-4
Accuracy : ±5% of reading for signals ≥ 1% of nominal, ±0.05% of nominal for signals < 1% nominal voltage
Method IEC 61000-4-7 Class I, Gapless FFTs on L1-N, L2-N, L3-N, order up to 63rd*
Mains signaling voltage Fully compliant and certified to IEC 61000-4-30 Ed. 3 Class A
Range 0% ~ 15% of nominal voltage
Accuracy ±5% of reading for signals between 3% ~ 15% of nominal, 0.15% of nominal for signals between 1% and 3% of nominal, no requirements for signals < 1% nominal
User-selectable detection threshold recording period mains signaling frequency
Underdeviation and overdeviation Fully compliant and certified to IEC 61000-4-30 Ed. 3 Class A
Range 10% ~ 150% of nominal voltage, Accuracy ±0.1% of nominal voltage

BEYOND CLASS A – 2 kHz-150 kHz CONDUCTED EMISSIONS MEASUREMENT
Measurement method Fully compliant and certified to IEC 61000-4-30 Ed. 3, Annex C (informative)
200 Hz bin size for the range 2 kHz-9 kHz, 2000 Hz bin size for the range 9 kHz-150 kHz
Range     0-60 Vpk

 

BEYOND CLASS A – HIGH FREQUENCY IMPULSE
Sampling rate 4 MHz on single channel, the channel is user selected.
1 MHz on 4 channels L1-E, L2-E , L3-E and N-E.
Accuracy ±5% typical. Dependent on frequency and type of impulse
Range ±6 kVpk. User-selectable threshold through 2-pole 1.5 kHz high-pass filter, and 1.5 MHz low pass filter
Measurement Fully compatible with ANSI/IEEE C62.41, C3 and B3 combination wave, ring wave and IEC 61000-4-5 waveforms

ENVIROSENSOR PROBES (TEMPERATURE/HUMIDITY/PRESSURE/ACCELERATION)
Connection USB. Functional electrical isolation from PQube 3
Sampling rates 1 sample per second typical for temperature, humidity, barometric pressure

8, 16, 32 samples per second, user selected for acceleration

Temperature Range: -20 °C ~ +80 °C (-4 °F ~ 176 °F)
Humidity Range: 0 %RH ~ 100 %RH (useful range: 20 %RH ~ 80 %RH)
Barometric pressure Indicative measurements, resolution better than 0.001 hPa
Acceleration Full-scale acceleration ±2g, ±4g, ±8g, user selected

Trigger on mechanical shock/vibration, seismic motion, or tilt

OPTIONAL ATT1 VOLTAGE ATTENUATOR MODULES FOR ANALOG INPUT CHANNELS
ATT1-0600V ATT1-1200V
Rated full-scale voltage ±600 VDC/300 VAC to Earth ±1200 VDC/600 VAC to Earth
Nominal measurement range ±825 Vpk to Earth ±1630 Vpk to Earth
Test voltage to earth 7250 VDC 14500 VDC
Accuracy ±0.2% reading typical at DC (>10% FS), plus uncertainty of PQube 3 analog input channels

 

OPTIONAL ATT2 MODULE FOR DC POWER AND ENERGY
Voltage channel ATT2-600V ATT2-1200V
Maximum input voltage ±1000 Vpk differential ±2000 Vpk differential
Rated full-scale voltage ±600 VDC/300 VAC differential ±1200 VDC/600 VAC differential
Analog input ratio 100:1 200:1
Accuracy DC: ±0.1% rdg ±0.1% FS

50/60Hz: ±0.15% rdg ±0.15% FS typical

(At 23°C ±3°C, 10% – 100% FS, not including uncertainty of PQube 3 analog channels)

Thermal drift of offset voltage ±0.005 mV/°C typical
Thermal drift of gain ±0.01% rdg/°C typical
Current channel With closed-loop sensors With open-loop sensors
Rated full-scale current 50A to 600A (depending on sensor model) 50A to 3000A (depending on sensor model)
Maximum input current 150% to 200% FS (depending on sensor model) 110% to 200% FS (depending on sensor model)
Accuracy at calibration current
±0.15% rdg ±0.15% FS typical at DC ±0.3% rdg ±0.3% FS typical at DC
At 23⁰C ±3⁰C. Calibration current = 70% FS or 500A (whichever is smaller). Does not include uncertainty of PQube 3 analog channels
Hysteresis offset voltage error < ±20 mV (after excursion of ±100% FS current) < ±30 mV (after excursion of ±100% FS current)
Linearity (from 10% to 100% FS) ±0.1% rdg ±0.1% FS ±0.5% rdg ±0.5% FS
Thermal drift of offset voltage ±0.1 mV/ºC typical ±1 mV/ºC typical
Thermal drift of gain ±0.02% rdg/ºC typical ±0.1% rdg/ºC typical

INSTRUMENT POWER SUPPLY
PQube 3 power supply screw terminals –  supports AC or DC PQube 3 P+ and P- pluggable screw terminals
AC input range 24 VAC ±10% at 50/60/400 Hz, 1.5A max
DC input range ±24 VDC ~ 48 VDC ±10% (polarity independent), 1A max
Power consumption 20W max
Isolation Internally electrically isolated from all other circuits to avoid ground loops.
PQube 3 – PoE – Power over Ethernet (standard)
Input voltage range 37 ~ 57 VDC
Power consumption 15W max
PM1, PM2 Power Manager Modules (optional)
Rated AC input range 100 ~ 240 VAC ±10%, 50/60 Hz
AC input current rating 400 mA
Supported DC input range 120 ~ 370 VDC
Auxiliary DC power output 24 VDC isolated, up to 5.15W max (Available with PM2 only)
Power consumption 20W max
Isolation 3 kVAC 1min, 4.2 kVDC 1 min
Surge immunity EN 61000-4-5 Criteria A
Installation category CAT II 300V

UPS1 BATTERY BACKUP MODULE
PQube 3 backup time 1 ~ 30 minutes, user selected.
Battery 7.4 V 2200mAh Li-ion battery pack
Life expectancy 3 years or 500 cycles (100% depth discharges), whichever comes first.
Operating temperature range 0 °C ~ 45 °C
Operating humidity 45 %RH ~ 85 %RH
Protection Built-in hardware cutoff for over-voltage, under-voltage, and overcurrent.

 

UPS2 BATTERY BACKUP MODULE
PQube 3 backup time 1 ~ 60 minutes, user selected.
Battery 6.0 V  , with one or several 2500mAh lead-acid external battery packs
Life expectancy 10 years or 300 cycles (100% depth discharges), whichever comes first.
Operating temperature range -20 °C ~ 65 °C
Operating humidity 45 %RH ~ 85 %RH
Protection Built-in hardware cutoff for over-voltage, under-voltage, and over-current.

STORAGE/COMMUNICATIONS
USB
Connection Three USB master ports: one hi-speed USB2.0 port, two standard USB1.0 ports
Isolation PQube 3 provides functional isolation to Earth (eliminates ground loops).
Removable SD card
Type microSD
Capacity 16GB standard (stores up to 3 years of data under normal use)
Ethernet Port
Connection Standard RJ-45 socket (wired Ethernet). Transformer isolated.
IP address can be assigned via DHCP or manually set fixed IP.
Email Sends emails after every event with data attached; user request real-time meters via e-mail, PQube 3 firmware upgrade via email, change PQube 3 setup via email, incoming e-mail filters. Includes GIF graphs, CSV spreadsheet files, PQDIF, HTML and XML summaries
Protocols: POP3, SMTP, and SSL over SMTP
Web server More than 30 real-time meters. All events, trends and statistics recordings. Includes GIF graphs, CSV spreadsheet files, PQDIF, HTML and XML summaries.
Modbus over TCP More than 50 real-time meters with update rate of approximately 0.5 seconds – see PQube 3 Modbus Specification document. Event/trend-statistics counters can be used for triggering downloads via FTP or web server.
FTP Server File Transfer Protocol. Transfers files from PQube 3 SD card to and from any computer.
SNTP Simple Network Time Protocol for synchronizing PQube 3 real-time clock to UTC.
SNMP Support for SNMP v2c and v3
Security Secure FTP- FTPS, HTTPS.

CLOCK TIMING
Internal real-time clock Fully compliant with IEC 61000-4-30 Ed. 3 Class A
Drift: Typical ±30 seconds/yr. Temperature compensated. ±70 seconds/yr. max drift
SNTP Accuracy: ±10 to 100 milliseconds absolute, UTC time. Dependent on network latency.
NTP Accuracy: ±1 to 10milliseconds absolute, UTC time. Dependent on network latency
GPS (with optional MS1 module and GPS receiver) Intrinsic resolution 1microsecond
Accuracy better than Class A requirement (by a factor of 10) < 1ms .

 

OPERATING ENVIRONMENT
Operating temperature Minimum -20 °C, Maximum 65 °C with no load on 24V power supply terminals, Maximum 55°C with 5.15W load on 24V power supply terminals
Operating humidity 5% RH ~ 95% RH non-condensing, indoor use
Altitude Maximum 2000 meters above sea level
Overvoltage category For PQube 3 AC mains measuring terminals, Overvoltage Category III 600V.
For PM1 input terminals, Overvoltage Category II 300V.
Pollution degree 2
Isolation UL/IEC 61010:2010 – 3.6 kV AC 1 min, 5.1 kVDC 1 min, 5.4 kVAC (5 sec), 9.6 kVpk impulse.
Surge UL/IEC 61010:2010 – 3.6 kV AC 1 min, 5.1 kVDC 1 min, 5.4 kVAC (5 sec), 9.6 kVpk impulse.
Installation category CAT IV UL/IEC 61010 for voltages up to 300 VAC L-N (equivalent to 480 VAC L-L), CAT III for voltages up to 600 VAC L-N. Pollution degree 2.
Transient voltages 100 kHz 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 kVpk, IEC 61000-4-4, Performance Evaluation Class 1. Applied to power measuring terminals and optional PM1/PM2 power supply mains terminals.
RF field strength immunity 3 V/m, IEC 61000-4-3 Test Level 2.
Magnetic field strength immunity 30 A/m, IEC 61000-4-8 Test Level 4.
Ingress protection rating (IP rating) IP20H, IEC 60529.

 

(*) contact factory for availability

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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