Low Frequency Measuring System
12Pages

Emission Measurements Low Frequency Measuring System Brief Overview of Phenomena. . . . . . . . . . . . . . . . 2 Applicable Standards . . . . . . . . . . . . . . . . . . . 3 Test System Overview. . . . . . . . . . . . . . . . . . . 4 Generator Specications. . . . . . . . . . . . . . . . . . 9 Accessories and Options. . . . . . . . . . . . . . . . . 10 EMC PARTNER’s Product Range . . . . . . . . . . . . . . 11 Emission Measurements: LF Measuring System

Brief Overview of Phenomena Low Frequency (LF) Measuring System measures and simulates disturbances in the 230V/50Hz and 115V/60Hz public power supplies. The following phenomena can be tested: Emission - Harmonics The increasing use of electronic equipment tted with switch mode power supplies has led to an increase in distortion of the public power supply. Such loads draw non sinusoidal current, which contains harmonic frequencies at multiples of the 50Hz and 60Hz supply frequencies. This can lead to signicant currents owing in the neutral conductor resulting in cable and transformer...

Applicable Standards International Electrotechnical Committee (IEC) IEC 61000-3-2 (Ed.3.2: 2009): Limits - Limits for harmonic current emissions (equipment input current <= 16 A per phase) IEC 61000-3-3 (Ed.2.0: 2008): Limits - Limitation of voltage changes, voltage uctuations and icker in public low-voltage supply systems, for equipment with rated current <= 16 A per phase and not subject to conditional connection IEC 61000-4-7 (Ed.2.1: 2009): Testing and measurement techniques - General guide on harmonics and interharmonics measurements and instrumentation, for power supply systems and...

Test System Overview Test System Features LF Measuring System has many unique and outstanding features: - Utilises public power main - Light weight and transportable - Unique power amplier design (patent pending) - 4000VA rated system - 250V maximum EUT supply - 16A per phase maximum EUT current - Power source continuously monitored for compliance - Discrete components for icker impedance - Flicker measurements Pst and Plt - dmax measurements - Automatic Pass/Fail indication - Powerful analysis software - Lower cost solution compared to conventional systems - System verication built-in -...

System Components The Low Frequency measuring system is a compact solution to determine harmonic and flicker emissions generated by equipment connected to the public power main. HAR1000-1P is the single phase version and comprises a power amplifier, line imped- ance network, harmonics and flicker measurement, all in a single unit. HAR-EXT1000 added to HAR1000-1P provides full three phase capability. The hardware is controlled from a powerful user interface software (HARCS). Current ranges Power Amplifier Using a novel technique to correct power main distortion reduces size, weight and cost...

Harmonic Measurement System Definition of the equipment classes This can be configured to measure in accordance with the latest standard require- ments (including amendment 14) and also the previous version. Providing an easy comparison of measurement results obtained from previous and new samples. Dual analysers simultaneously monitor the AC supply output and the distortion resulting from the EUT. Both voltage and current harmonics are measured and displayed for analysis purposes File Action Protocol View Options Harmonic Emission | Flicker Emission | Harmonic Immunity ] Voltage...

Flicker Measurement System The flicker analyser is a part of the system hardware and is compliant to the latest requirements of IEC61000-4-15. Specifically this means that dmax is the result of an average from 22 measurements taken from a total of 24. Verification of the flicker measurement system can be made using 33.3Hz modulation for 50Hz and also 40Hz modulation for 60Hz supplies. The inrush current capability enables measurement of Fiis Action Protocol View iHsrTor.ic Emission Flicker Emission Harmonic Immunity I Voltage; Fluctuation Cumulative Probability Long term Flicker (Pit): 0.00...

HARCS Recorder. Up to 8 different measure- ment parameters can be stored in the record- er. When a test is completed, data from the recorder can be "re-run" to assist in analysis HARCS ANASIM. Included in the HARCS pack- age is the simulation program ANASIM. Verification. Perform a quick system verifica- tion for harmonics and flicker using internally generated signals. HARCS - Recorder Protocol View Options Help "Flicker Verification- Flicker Simulalion- Emission Measurements: LF Measuring System

Generator Specifications Power Amplifier Power rating Amplifier bandwidth Continuous current Usable supply frequencies Inrush current Load change regulation Total Harmonic Distortion (THD) Response time 0 to 100% load change Voltage harmonic distortions Source impedance Harmonic Measurement System Current and Voltage harmonic range 1st to 40th harmonic Harmonic class measurements A, B, C, D & X Frequency measurement accuracy < 0.1% Voltage drop across current shunt _< 150mV_ Current measurement accuracy_< 1%_ Parameter measurement and display Urms, Upeak, Irms, Ipeak, Crest fac- tor, Power,...

Accessories and Options HAR1000-1P can be enhanced with the following accessories: HAR-EXT1000 with HAR1000-1P and Laptop HAR-EXT1000 Adds two further phases to the HAR1000-1P. Simple connection without any hardware modications mean this powerful extension can be added at any time to an existing single phase system. Simultaneous display of three phase harmonics HARCS Immunity Software This package can be added to both the single and three phase systems. It extends the system’s emission capability to include power line immunity tests such as harmonic immunity, voltage uctuations and ripple...

EMC PARTNER’s Product Range The Largest Range of Impulse Test Equipment up to 100kA and 100kV. Immunity Tests Transient Test System can be used to performs all EMC tests on electronic equipment. ESD, EFT, surge, AC dips, AC magnetic eld, surge magnetic eld, common mode, damped oscillatory and DC dips tests are available as stand-alone or combined test instruments. A large range of accessories for different applications is available: three phase couplers up to 690V/100A, telecom and data line couplers, verication sets, magnetic eld coils. Immunity test systems fullls IEC and EN 61000-4-2,...