IEC
IEC 61000-4-7: General Guide on Harmonics and Interharmonics Measurements and Instrumentation
Standard Overview
IEC 61000-4-7 is applicable to instrumentation intended for measuring spectral components in the frequency range up to 9 kHz which are superimposed on the fundamental of the power supply systems at 50 Hz and 60 Hz. For practical considerations, IEC 61000-4-7 distinguishes between harmonics, interharmonics and other components above the harmonic frequency range, up to 9 kHz.
IEC 61000-4-7 defines the measurement instrumentation intended for testing individual items of equipment in accordance with emission limits given in certain standards (for example, harmonic current limits as given in IEC 61000-3-2) as well as for the measurement of harmonic currents and voltages in actual supply systems. Instrumentation for measurements above the harmonic frequency range, up to 9 kHz is tentatively defined.
IEC 61000-4-7 defines the measurement instrumentation intended for testing individual items of equipment in accordance with emission limits given in certain standards (for example, harmonic current limits as given in IEC 61000-3-2) as well as for the measurement of harmonic currents and voltages in actual supply systems. Instrumentation for measurements above the harmonic frequency range, up to 9 kHz is tentatively defined.
Products Used in Testing
Fluke 1775 Three-Phase Power Quality Analyzer
- Automatically measure power and power quality parameters
- At-a-glance power quality health for faster troubleshooting
- Easily view V/A/Hz, power, dips, swells, and harmonics data
Fluke 1777 Three-Phase Power Quality Analyzer
- Voltage: 100V – 600V (-15% / +10%)
- Power Consumption: 40VA Max
- Bandwidth: DC to 30 kHz
Fluke 435-II Power Quality & Energy Analyzer
- Quickly see how much money losing due to energy waste in terms of real dollars
- Easily see how motor startups are affecting motor drive performance
- Get at-a-glance power quality health data in real-time so you can make better maintenance decisions
Dranetz HDPQ Guide Power Quality Analyzer
- High definition PQ & energy monitoring: 1000 Vrms, AC/DC, 512 samples/cycle
- Eight channels, 4 voltage & 4 current
- AnswerModules: sag directivity, PF capacitor identification, motor: automatic event categorization
Dranetz HDPQ Guide SP Power Quality Analyzer
- IP65 enclosure
- GPS
- High Definition PQ & Energy Monitoring – 1000Vrms, AC/DC, 512 samples/cycle
Dranetz HDPQ Visa Power Quality & Energy Monitoring Analyzer
- High Definition PQ & Energy Monitoring – 1000Vrms, AC/DC, 512 samples/cycle
- Eight channels, 4 voltage & 4 current
- Advanced PQ – IEC 61000-4-30 Class A & IEEE 1159 compliant
Dranetz HDPQ Xplorer 400 Power Quality Analyzer
- 50/60Hz and 400Hz operating modes
- 1000Vrms, AC/DC, 512 samples/cycle
- 10 to 2000Vpk
Dranetz HDPQ Xplorer Plus Power Quality Analyzer
- High Definition PQ & Energy Monitoring – 1000Vrms, AC/DC, 512 samples/cycle
- High Speed Digitized Transients – 1us, 10 to 2000Vpk
- Transient triggers – V & I – waveshape triggers, high speed. Well beyond PQ standards requirements
Dranetz HDPQ Xplorer Power Quality Analyzer
- High definition PQ & energy monitoring: 1000 Vrms, AC / DC, 512 samples/cycle
- High speed digitized transients to 1us – to 2000Vpk
- Eight channels, 4 voltage & 4 current
AEMC PowerPad IV Model 8345 Power Quality Analyzer
- Full compliance with IEC 61000-4-30 ed. 3.0 Class A functions
- Real-time display of color waveforms (5 voltage/4 current) from 1 cycle to 10/12 cycles
- Calculation of unbalance (current and voltage)
Yokogawa WT3000 Precision Power Analyzer
- Basic accuracy: 0.01% of reading
- Basic power accuracy: 0.02% of reading
- 30A current input element
Yokogawa WT5000 Precision Power Analyzer
- Basic power accuracy of ±0.03%
- 10 MS/s, 1MHz power bandwidth
- Peak voltage of 2.5 kV or RMS of 1.5kV
Dranetz HDPQ Visa Plus
- Frequency | 16 - 25 Hz, 42.5 - 69 Hz, ±0.01 Hz
- Harmonics | IEC 61000-4-6, IEEE 519:2014
- Real power (W) | P: meets 0.2S requirements
Fluke 437-II Three-Phase Power Quality Analyzer
- Energy loss calculator: quantified to pinpoint true system energy losses in dollars
- Power inverter efficiency: simultaneously measure AC output power and DC input power for power electronics systems using optional DC clamp
- Capture fast RMS data, show half-cycle and waveforms to characterize electrical system dynamics
Fluke 1773 Three-Phase Power Quality Analyzer
- Automatically measure power and power quality parameters
- At-a-glance power quality health for faster troubleshooting
- Easily view V/A/Hz, power, dips, swells, and harmonics data
Fluke 1736 Three-Phase Power Logger
- Voltage range: 100 - 240V (standard)
- Power consumption: 50VA Max
- Frequency: 42.5 to 69Hz