PQube 3

Das einzige Class A Messgerät, das für die neue Edition 3 des IEC Standard 61000-4-30 zertifiziert ist.
512 samples pro periode, Einsenkungen, Unterbrechungen, Spannungs und Strom Oberwellen, Flicker IEC 61000-4-15 Class F1, RVC - Rapid voltage changes, 2kHz-150kHz Emissionsschreiber, 4 MHz HF Impulse recorder, und viel mehr...

Energie (Genauigkeitsklasse 0.2/0.2s)

W, VA, VAR, λ, Wh, VAh, VARh. Berechnet kWh in jeder Minute!
Spitzenwerte über: 1 Vollwelle, 1-Minute, 15-Minuten und weitere durch den Benutzer bestimmte Intervalle
Tägliche, wöchentliche, monatliche Trends mit Lastkennlinien.
Darstellung von Verbrauchswerten - täglich, wöchentlich und monatlich.
1 A / 5 A Strommessung durch optionales CTi-5 Modul. Oder direkt nutzbar mit ultra präzisen 333 mV Strom- Sensoren. Die Wander erfüllen die Genauigkeits- anforderungen der IEC 62053-22 Klasse 0.2s und ANSI C12.20 Klasse 0.2.
NEU: PQube 3e mit 14 Stromkanäle

Viele benutzerdefinierte Kanäle und erweiterte EnviroSensoren®!

Mit zusätzlichen integrierten Wechsel- und Stromkanälen können Sie noch mehr Stromflüsse messen. Gleichzeitig benutzen Sie DC-Kanäle, um Drehzahl, Flüsse, Windgeschwindigkeit, Drehmoment, Temperatur aufzuzeichnen - was auch immer Sie sich vorstellen können! Dann stecken Sie ein paar PSL Advanced EnviroSensors® ein, um Temperatur, Feuchtigkeit, Luftdruck, Beschleunigung / Vibration und sogar Sonneneinstrahlung zu verfolgen.

Merkmale Montage Spezifikation Aufnahmen

Power Quality Monitoring

Ihre PQube 3 zeichnet alle relevanten Parameter, inklusiver der Umweltbedingungen auf. Damit ist eine umfassende Information Ihrer Stromversogung gewährleistet.

Spannungsüberwachung für Netze mit 16,7 Hz/50 Hz/60 Hz- 400 Hz, in Einphasensystemen 69 V ~ 480 V (L-N), in Dreiphasensystemen 100 V ~ 600 V (L-L) ohne Sternpunkt und 100 V ~ 830 V (L-L) mit Sternpunkt
Geeignet für Spannungswandler
8 Stromeingänge, 3 Kanäle für ein Dreihphasensystem zur Leistungs- und Energiemessung
Automatische Erkennung der Netzkonfiguration, Nennspannung und Nennfrequenz.
4 Analogeingänge, 1 Digitalausgang, 1 Relaiskontakt.
Optional bis zu 2 Sensoren für Temperatur/Luftdruck/RH.
Spannungsversorgung mit 24 VAC, 24 -48 VDC, PoE (Power over Ethernet) oder mit einem optional- einsteckbaren Netzteil für 100 -240 VAC.
Optionales USV-Modul für ~ 30 min Backup.
Datenspeicherung auf internem 8 GB Speicher. herausnehmbare 8 GB micro-SD Karte und USB- Schnittstelle zur Datenübertragung auf USB-Stick.
Farb-Touchscreen Display
Montage auf Hutschiene

Power Quality Messungen, Klasse A Ed. 3

Power Quality Messungen, Klasse A Ed. 3
Zertifiziert nach IEC 61000-4-30, Klasse A, Ed. 3.
Aufzeichnungsrate mit 512-samples-per-cycle.
Aufzeichnung von PQ-Ereignissen mit Kurvenform und Effektivwert, ausgegeben in Graphen.
Unter- und Überspannungen, Unterbrechungen, Unter- und Überfrequenz als transiente Aufnahme.
THDu, THDi & TDD; Spannungs- und Stromunsymmetrie; Flickerpegel (Pinst, Pst, Plt).
Oberschwingungsstrom und Oberschwingungspegel sowie Zwischenharmonische bis zur 50. Ordnung.
Tägliche, wöchentliche, und monatliche Trends mit Minimal-/Mittel-/Maximalwert
Statistische Verteilungskurven, Histogramme und mehr.
Automatische Erstellung von GIF-, CSV- und PQDIF- Dateien.
Schnelle Spannungsänderungen (RVC).
Darüber Hinaus:
Aufzeichnung bei Verletzung der Kurvenform
Erkennung und Aufzeichnung von 1 MHz Hochfrequenz- Impulsen (bis zu 4 MHz auf einem Kanal)
Aufzeichnung von leitungsgebundenen Störgrößen im Bereich von 2 kHz bis 150 kHz.

PQube schreibt die Dateien auf eine SD-Karte

Tabellenkalkulation: CSV Excel ®-kompatiblen Dateien, Ereignisse, Trends, Statistiken.
Bilder: Ereignis-und Trend / Statistikgraphen - zweisprachige Bild Graphen Ausgabe direkt von PQube in typischen GIF-Format
PQDIF: der IEEE-Standard für Power-Quality-Datendateien.
Text-, XML-und HTML-Zusammenfassungen: perfekt für die Verknüpfung mit anderen Programmen.

MONTAGEVIELFALT

Der winzige, leistungsstarke PQube3 Netz-analyzer bietet flexible Einbau-möglichkeiten. Von der Hutschiene bis zu tragbar. Wenn Sie etwas zu messen haben, gibt es auch einen Platz zum Installieren.

Hutschienenmontage

Einfach und leicht, PQube 3 können leicht auf eine bestehende Hutschiene geklippt werden.

Beliebiges Gehäuse

Praktisch installieren und problemlos auf Ihren PQube 3 Power Analyzer durch ein Scharnier-fenster zugreifen.

Mastmontage

IP44-Gehäuse - ideal für die Verteilerüber-wachung. Selbstgespeist von der überwachten Spannung. 3G / 4G kompatibel.

Wandmontage

IP44-Gehäuse - ideal für robuste Innen- und Au-ßenmontage. 3G / 4G Modem kompatibel.

19" Rack-Montage

Für Rechenzentren konzipiert, kann diese einphasige Rackmontage bis zu 2 PQube 3 Analysatoren unterstützen.

Tragbar Powerside

Dieses kompakte Gehäuse ist perfekt für den Außeneinsatz geeignet. 3G/4G kompatibel.

PQube Travel

Netzqualiät-, Energie und Umweltüberwachung in einer robusten Box. Das Gerät und die Anschlüsse sind für den tragbaren Betrieb gebaut. Erweitert um UMTS Funkmodem steigert die Flexibilität.

pqube_travel_brochure_v2--_-d.pdf [532 KB]

ANSCHLIESSEN - ES IST KONFIGURIERT

Sobald Sie es montiert und verdrahtet haben, erkennt Ihr PQube 3 automatisch die Nennfrequenz-, Spannungs- und Verdrahtungskonfiguration überall in der Welt und spart Ihnen Zeit bei der Inbetriebnahme.

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 VAC

Power 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 MO || 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 V_rms(Low range) or 3.33 V_rms(High range) - user selected.

Crest factor

3.5 (±1.17 V_pk) (Low range) or 3.0 (±10 V_pk) (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 kO
< 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 MO 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	>1MO
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-N_m for delta configurations. N_m 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. U_RMS½ per IEC 61000-4-30 Class A. Also 10/12 cycle true-RMS per IEC 61000-4-30 Class A.
Flicker	P_inst, P_st, P_lt 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 63^rd*
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 V_pk

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 kV_pk. 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 V_pk to Earth	±1630 V_pk 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 V_pk differential	±2000 V_pk 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 23°C ±3°C. 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 kV_pk impulse.
Surge	UL/IEC 61010:2010 - 3.6 kV AC 1 min, 5.1 kVDC 1 min, 5.4 kVAC (5 sec), 9.6 kV_pk 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 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 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.