PQM3000R Class A network analyzer according to EN 50160 for power quality monitoring

Highlights

Specifications Power supply
Auxiliary power voltage: 85...285 VAC 50/60 Hz / 65...250 VDC
Auxiliary power consumption: 17 VA max
Fuse: 250 VAC / 0.63 A T type delayed
Backup battery: 3.6 V Li-Ion, 3.0 Ah (>20 min autonomy)

Measurement inputs
Three-phase voltage inputs for direct connection / PT: Phase-neutral: max 580 V RMS CAT III
Phase-phase: max 1000 V RMS CAT III
Three-phase low voltage inputs: Phase-neutral: max 4.5 V RMS
Crest factor: &rt;2 V4 voltage input for direct connection: max 150 V RMS CAT II
Current inputs: according to the selected option (CTs, clamps, Rogowski coils)
Wiring modes: Three phases, 4 wires, 3 currents (3.4.3)
Three phases, 3 wires, 3 currents (3.3.3)
Three phases, 3 wires, 2 currents (3.3.2)
Single phase, 2 wires, 1 current (1.2.1)
Input impedance: >3 MΩ/phase for direct voltage inputs
Frequency range: 42.5...57.5 Hz / 51...69 Hz
Frequency reference channel: Phase 1/Line 12 voltage
Sampling: Simultaneous on all channels, 1024 samples/cycle

Accuracy
Three-phase voltage: ±0.1% U_n over 10 ... 150% U_n range
V4 voltage: ±0.2% reading
Currents: ±0.2% reading (clamp dependent)
Powers: ±0.2% reading
Frequency: ±10 mHz
Harmonics: Class 1 (IEC/EN 61000-4-7)
Internal realtime clock (RTC): < 1 s for 24h period without synchronisation
< 3 ms with GPS synchronisation

Calculation technique
Powers: Active and reactive, four quadrants
Power factor: Four quadrants
Currents: Continuous sampling, 1 cycle
Flicker: Compliant to IEC/EN 61000-4-15
Voltages: Compliant to IEC/EN 61000-4-30
Voltage event hysteresis: Programmable 1...25% U_n
Unbalance: Compliant to IEC/EN 61000-4-30
V4 voltage: Continuous sampling, 1 cycle
Harmonics, THD: Component DC+1...50 compliant to IEC/EN 61000-4-7
Frequency: Compliant to IEC/EN 61000-4-30

I/O channels
Digital inputs: 4 optoisolated 24 VDC
1PPS synchronisation inputs: 4 optoisolated 24 VDC ±20%
Analog outputs: 4 optoisolated 4 ... 20 mADC, max load 300 Ω
Analog output reaction time: max 200 ms

Memory
Recording memory: 4 GB (8 or 16 GB on request)

Communication
Ethernet ports: 2 switched 10/100 Base Ethernet (IP and MAC)
Protocols: HTTP, HTTPS, FTP, NTP
Integrated router (only for instrument with integrated router): UMTS-3G/HSPA

RTC Synchronisation
Synchronisation system: NTP and/or GPS

Environmental conditions
Operating temperature: -10 ... +50°C
Storage temperature: -30 ... +70°C
Relative humidity: 95% max without condensing
Altitude: max 2000 m
Installation & use: Indoor

Mechanical characteristics
Mounting: Rack 19” 3U
Size: Front (L x H): 482.6 x 133.4 mm (3U)
Rear (L x H x D): 380 x 128 x 215 mm
Weight: 3700 g

Safety standards
Safety: CAT III power supply, insulation class II, 600 V
Pollution degree: 2 (EN 61010-1)
Protection degree: IP40 front panel, IP20 rear
Directive: 2006/95/EC LV, EN 61010
EMC: 2004/108/EC EMC, EN 50081-2, EN 50082-2, EN 61326/A1, EN 55011:1998+A1:1999+A2:2002, EN 61000-6-2/-4-2/-4-3/-4-4/-4-5/-4-6/-4-11

Specifications for IEC/EN 61000-4-30 compliance Frequency (5.1)

Uncertainty: ±10 mHz
Measuring range: 42.5 Hz – 57.5 Hz; 51 Hz – 69 Hz

Magnitude of supply voltage (5.2)
Uncertainty: ±0.1% di U_din
Measuring range: 10% – 150% di U_din

Flicker (5.3)
Uncertainty: ±5% of reading
Measuring range: 0.2 – 10 P_st

Supply voltage dips and swells (5.4)
Uncertainty: Magnitude: ±0.2% di U_din
Duration: ±1 cycle

Voltage interruptions (5.5)
Incertezza: Duration: ±1 cycle

Unbalance (5.7)
Uncertainty: ±0.15%
Measuring range: 0.5% – 5% u₂ 0.5% – 5% u₀

Harmonics (5.8)
Uncertainty: IEC/EN 61000-4-7 Class I
Measuring range: 10% – 200% of Class 3 of IEC/EN 61000-2-4