Ametek CTS - EMV Düsseldorf - Volta...2019/06/05 · IEC 61000-3-12 Ed.2: Electromagnetic...
Transcript of Ametek CTS - EMV Düsseldorf - Volta...2019/06/05 · IEC 61000-3-12 Ed.2: Electromagnetic...
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𝑈 = û × 2𝜋 × 𝑓
Variations of the mains parameters
• variations of amplitude
− drops & interrupts
− superimposed disturbances (ripple, noise,
modulations, etc.)
• variations in frequency
− changes in fundamental frequency
− superimposed higher frequencies (harmonics &
interharmonics)
• influence of mains impedance
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Immunity
Emission
IEC 61000-4-x
IEC 61000-3-x
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≤16A)
≤75A)
≤16A)
≤75A)
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Harmonics are sinusoidal voltages or currents having frequencies that are whole multiples of the frequency at which the supply system is designed to operate (e.g. 50Hz or 60 Hz).
A 150 Hz sine-wave signal, superposed onto the fundamental mains frequency, will be designate as the 3rd harmonic or as the harmonic of 3rd order (3 x 50 Hz).
50 Hz – no harmonic
50 Hz + 3rd harmonic 30%
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h1 100%h2 10%h3 20%
h1 100% h1 100%h2 10%h3 20%
h7 30%h9 20%h10 10%
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••••••••
••
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Applicable to all electrical and electronic equipment having an input current up to and including 16 A per phase, and intended to be connected to public low-voltage distribution systems.
Excluded from that are the following categories of equipment:
Equipment with a rated power of ≤75 W, other than lighting equipment
Lighting equipment with a rated power of ≤ 5W
Professional equipment with a total rated power ≥1 kW
Symmetrically controlled heating elements with a rated power ≤ 200W
Independent phase control dimmers:−with a rated power ≤ 1 kW for incandescent lamps−with a rated power ≤ 200 W for trailing edge dimmers for lighting equipment other than incandescent
lamps−with a rated power ≤100 W for leading edge dimmers/phase control dimmers for lighting equipment
other than incandescent lamps
Electromagnetic compatibility (EMC) - Part 3-2: Limits - Limits for harmonic current
emissions (equipment input current ≤16 A per phase)
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Class A - Balanced three-phase equipment- Household appliances excluding equipment identified as Class D- Vacuum cleaners- Tools excluding portable tools- Independent phase control dimmers- Audio equipment- Equipment not specified in one of the three other classes shall be considered
as Class A equipment.
Class B - Portable tools- arc welding equipment which is not professional equipment
Class C - Lighting equipment
Class D - Equipment having a specified power < 600W of the following types:- Personal computers and personal monitors;- Television receivers (TV).
Special Test condition
Vaccum cleaners, high pressure cleaners, refrigerators with VDS
EQUIPMENT CLASSIFICATION
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LIMITS - EXAMPLE
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IEC 61000-3-12 Ed.2: Electromagnetic compatibility (EMC) – Part 3-12: Limits –
Limits for harmonic currents produced by equipment connected to public lowvoltage
systems with input current >16 A and ≤ 75 A per phase
concerns higher power EUTs which are mostly industrial equipment
mainly three phase equipment
measured are the harmonic currents generated (emitted) by the EUT
the impact of the generated harmonics depend on Rsce: the ratio between the
impedance of the mains network and the impedance of the EUT
the limits applied depend on Rsce
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• The standard EN 50160 definies for the quality of the mains power at the PCC (Point of CommomCoupling) minimum requirements concerning the voltage waveform.
• The electricity supplier makes sure that these requirements are met and allows only those consumers to connect which guarantees the compliance with EN 50160.
• To ensure the quality of the power grid, the harmonics of the user equipment are limited.
• • No interferences to other users
Voltage and Impedance Current waveform ? Immunity and Emission
• Safe operation in the installation
• Immunity from the mains
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Electromagnetic compatibility (EMC) - Part 4-13: Testing and measurement techniques -
Harmonics and interharmonics including mains signalling at a.c. power port, low frequency
immunity tests
defines a set of distortion signals that is applied to the EUT
simulates typical disturbances on a low power distribution network
the standard defines four different classes:
Class 1: computer rooms and similar environments
Class 2: light industrial environment
Class 3: industrial environment
Class 4: heavy industrial environment
for each class the performed test and levels are defined
products standards reference to IEC 61000-4-13
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Testing and measurement techniques – Voltage fluctuation immunity
test for equipment with input current not exceeding 16 A per phase
aims to establish a reference for evaluating the immunity of electric and electronic equipment
when subjected to positive and negative low amplitude voltage fluctuations.
applies to electrical and / or electronic equipment that have a rated input current up to 16 A per
phase.
Fluctuations are mainly produced by:A Single on/off switching of loads (e.g. motors)B Step voltage changes (due to tap voltage regulators of transformers).C Randomly varying large loads such as:
- resistance welding machines- rolling mills- large motors with varying loads- arc furnaces- arc welding plant
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Testing and measurement techniques - Unbalance, Immunity test
reference for evaluating the immunity of electrical and electronic equipment when subjected to
unbalanced power supply voltage.
This standard does not apply to electrical and/or electronic equipment connected to a.c. 400 Hz
distribution networks.
This standard does not include tests for the zero-sequence unbalance factor
Source and reason of interferences:
Unbalance is caused by either voltage amplitude or phase-shift variations.
This disturbance, could cause:
overcurrent in a.c. rotating machines; generation of non-characteristic harmonics in
electronic power converters; synchronization problems or control errors in the control part
of electrical equipment.
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Test
numberTest
level
Test level for Class 2 Test level for Class 3 Test
level
Class 1 Phase Amplitude
% UN
Angle
°
k u2
%
Time
s
Phase Amplitude
% UN
Angle ku2
%
Time
s
for
Class
X
Ua 100 0° Ua 100 0°
Test 1 No Ub 95,2 125° 6 30 Ub 93,5 127° 8 60
test Uc 90 240° Uc 87 240°
required Ua 100 0° Ua 100 0°
Test 2 Ub 90 131° 13 15 Ub 87 134° 17 15
Uc 80 239° Uc 74 238°
Ua 110 0° Ua 110 0°
Test 3 Ub 66 139° 25 0,1 Ub 66 139° 25 2
Uc 71 235° Uc 71 235°
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Testing and measurement techniques - Variation of power frequency, immunity test
evaluates the immunity of electric and electronic equipment when subjected to variations of the
power frequency
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Test levels Frequency variation (f/ f1) Transitional period tp Level 1 No test required No test required
Level 2 ±3% 10s
Level 3 + 4% - 6%
10s
Level 4 ±15% 1s
Level X Open Open
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Testing and measurement techniques - Ripple on d.c. input power port, Immunity test
evaluates the immunity of electric and electronic equipment when subjected DC ripple
applicable to low voltage DC power ports of equipment supplied by external rectifier systems or
batteries, charged during operation
Level Percentage
of the nominal d.c. voltage
1
2
3
4
x
2
5
10
15
x
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Testing and measurement techniques - Voltage dips, short interruptions and voltage
variations on d.c. input power port Immunity test
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n
PLT = 3
1/n a PST,i3
i = 1
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MANY THANKS FOR YOUR ATTENTION
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