N4L Ltd. (UK) EMC IEC61000 COMPLIANT TEST SOLUTIONS Precision Measurement Instrumentation UK Based, est. 1997 EMC IEC61000 COMPLIANT TEST SOLUTIONS

Company Overview Relocated to new manufacturing facility April 2015 Location : Leicester, UK 3x Increased manufacturing capacity Improvements to Calibration facility Stable platform for N4A Power Source production Continuous Innovation

EMC Test Solutions 3kVA ~ 67kVA Test Systems Full Compliance In house ISO17025 [UKAS] Laboratory, Calibration of IEC61000-3-2, IEC61000-3-3, IEC61000-3-11 and IEC61000-3-12 AC Source Compliance to IEC61000-4-11, IEC61000-4-13 Future upgrade schedule to include a complete suite of IEC61000 standards Intuitive Software 100% coverage of IEC61000-4-15 and IEC61000-4-7 standard via ISO17025 calibration

ISO17025 Calibration A distinct advantage of N4L EMC test solutions is the calibration capability of N4L’s internal ISO17025 test laboratory based at the UK headquarters. This facility features both commercially available ISO17025 calibration equipment as well as proprietary ISO17025 accredited test equipment designed in house, by N4L.

IEC61000-4-7, IEC61000-3-2 and IEC61000-3-12 IEC61000-4-7 [Testing and Measurement Techniques – Harmonics and Interharmonics] defines the requirements of the harmonic Analyzer. It is important that any harmonic analyzer claiming compliance to IEC61000-3-2/12 is fully compliant to IEC61000-4-7, including proof of the same. N4L have developed a complete test suite to verify compliance to IEC61000-4-7. This procedure exceeds the verification level commonly found on the market.

IEC61000-4-7 The IEC61000-4-7 calibration procedure provides evidence of compliance for an analyzer to measure an EUT against the limits specified in IEC61000-3-2 and IEC61000-3-12

IEC61000-3-2 and IEC61000-3-12 An important aspect of any compliant test system is the HMI(Human Machine Interface) N4L have spent many years developing and improving the IEC61000-3-2/12 user interface which has matured into an intuitive, comprehensive analysis and review mechanism for the test engineer. Features such as real time pass/fail flags, live graphical update of limit levels, data point export for complete test “replay”, as well as a thorough reporting function.

IEC61000-4-15 The IEC61000-4-15 standard describes the requirements for Flicker meters, this standard is notoriously difficult to provide traceable verification of the various specified parameters. N4L have developed thorough test procedures, utilising both commercially available test equipment (eg. Fluke 6105A) with customised voltage sequencing events as well as proprietary N4L signal generation equipment (N4A02-FLICKER SOURCE) which is also utilised for “d parameter” compliance testing. All tests are included within N4L’s ISO17025 UKAS scope of accreditation

IEC61000-4-15

IEC61000-3-3 and IEC61000-3-11 The IEC61000-3-3 and IEC61000-3-11 standards state the limits and test procedures for flicker compliance. IECSoft’s Flicker measurement mode incorporates an intuitive step by step style setup procedure, guiding the user through the test configuration. Remote control of the N4L N4A AC Power Source is handled automatically by IECSoft, test procedures include selection of d[t] parameters and calculation of Ztest if necessary. Pinst, IFS, PST, PLT, D, Dmax, Dc and Tmax are also updated during any test.

IEC61000-3-3 and IEC61000-3-11 Inrush (dmax) testing For products utilising manual switching as a method of initiating and ending operation, a “dmax” test known as the “Inrush test” is required. This involves a succession of 24 switching events that are recorded and the arithmetic mean (excluding the highest and lowest dmax values) is calculated. An intuitive user interface has been developed for this task which guides the test engineer through the process and provides prompts to perform the switching event. Statistical analysis is also automated within the software, removing this burden from the user. This results in reduced test times and eliminates the risk of a mathematical error.

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Flicker Simulation The N4A series of AC Power Source feature the ability to generate flicker waveform sequences. Useful for verification of Flickermeters Confirms connections to AC source are OK

Amplifier Topology for IEC61000-4-11 and IEC61000-4-13 compliance Unique switching output technology provides typical output distortion (THD) of 0.1% Ability to generate AC + DC 1kHz full signal bandwidth

User Interface Most parameters accessible from main screen Use “Home” button to activate the onscreen menu, then <> Ability to change Voltage, Frequency, adjustment parameters, output ON/OFF, sense, waveform type and coupling from main screen More complex parameters in separate menus ^ ^

THD of Sinusoidal Output Typical <0.1% THD (critical for IEC61000 compliance testing) Measurement of output utilising PPA5500 PPA5500 benefits from isolated input, eliminating requirement for differential probe + oscilloscope 230Vrms, 50Hz Sinusoidal Output

Square Wave Generation Ability to generate high frequency square waves due to bandwidth up to 15kHz. 50Hz Square wave, excellent signal integrity 500Hz square wave, good signal integrity within 3V/us slew rate limitation

Triangle Wave Generation 50Hz triangle wave, excellent signal integrity 500Hz triangle wave, excellent signal integrity

Harmonic Synthesis All N4A units feature the ability to generate harmonics up to 10kHz N4A units are calibrated up to 10kHz IEC61000-4-13 Harmonic/Interharmonic standards Example: Fundamental 500Hz, 7th Harmonic Generation (3500Hz) @ 20Vrms

230Vrms, 500Hz Fundamental 20Vrms 7th Harmonic (3.5kHz) Harmonic Synthesis 230Vrms, 500Hz Fundamental 20Vrms 7th Harmonic (3.5kHz) 230Vrms, 50Hz Fundamental 20Vrms 7th Harmonic (350Hz)

IEC61000-4-11 Compliance testing As mains supply lines can suffer from harmonic and interharmonic interference, IEC61000-4-13 defines the harmonic and interharmonic levels upon which products must be tested. IECSoft provides a simple user interface to create test programmes for each class of product

IEC61000-4-11 Compliance testing

IEC61000-4-11 Compliance testing

IEC61000-4-11 Example In this example, the N4A is programmed to produce compliant waveforms to IEC61000-4-11. Example Class 1 230Vrms reference Voltage waveforms are shown below Class 2 – 0% during 0.5 cycle Class 2 – 0% during 1 cycle Class 2 – 70% during 25 cycles

IEC61000-4-13 Harmonic and Interharmonic susceptibility testing As mains supply lines can suffer from harmonic and interharmonic interference, IEC61000-4-13 defines the harmonic and interharmonic levels upon which products must be tested. IECSoft provides a simple user interface to create test programmes for each class of product

IEC61000-4-13 Harmonic and Interharmonic susceptibility testing

Power Analyzer Technology Best Phase Accuracy in Market (0.003deg) Best High Frequency response in Market Most comprehensive calibration protocol in Market UKAS Calibrated upon supply (Only manufacturer to provide ISO17025 as standard) Only Power analyzer Manufacturer to be accredited to ISO17025 for IEC61000-3-3 and IEC61000-3-2 Unique “Planar” current shunt design Real time “no gap” analysis Continuous high sample rate, regardless of fundamental frequency (2Ms/s – PPA5500)

Power Analyzer Models

N4L Measurement Technology Traditional Approach N4L Approach

N4L Current Shunt Design

Field Cancellation

Calibration

The total EMC Compliance Package IEC61000-3-2 IEC61000-3-3 IEC61000-3-11 IEC61000-3-12 IEC61000-4-11 IEC61000-4-13 IEC61000-4-17 IEC61000-4-29

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