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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,  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 14 inputs : I1, I2, I3, I4, I5, I6, I7, I8,I9, I10, I11, I12, I13, I14 (first 4 currents typically used as I1, I2, I3, N, E)
Current Ranges 1A, 5A, 20A… 300A, 400A…6000A
available through split-core 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).
Internal Memory & Removable  card
Type Internal memory: Flash EMMC
External:  microSD card
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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