IEC 61000-4-14:1999/AMD2:2009

IEC 61000-4-14 ®
Edition 1.0 2009-05
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
BASIC EMC PUBLICATION
PUBLICATION FONDAMENTALE EN CEM
AMENDMENT 2
AMENDEMENT 2
Electromagnetic compatibility (EMC) –
Part 4-14: Testing and measurement techniques – Voltage fluctuation immunity
test for equipment with input current not exceeding 16 A per phase

Compatibilité électromagnétique (CEM) –
Partie 4-14: Techniques d'essai et de mesure – Essai d’immunité aux
fluctuations de tension pour le matériel dont le courant d’entrée est inférieur ou
égal à 16 A par phase
IEC 61000-4-14:1999/A2:2009
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IEC 61000-4-14 ®
Edition 1.0 2009-05
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
BASIC EMC PUBLICATION
PUBLICATION FONDAMENTALE EN CEM
AMENDMENT 2
AMENDEMENT 2
Electromagnetic compatibility (EMC) –
Part 4-14: Testing and measurement techniques – Voltage fluctuation immunity
test for equipment with input current not exceeding 16 A per phase

Compatibilité électromagnétique (CEM) –
Partie 4-14: Techniques d'essai et de mesure – Essai d’immunité aux
fluctuations de tension pour le matériel dont le courant d’entrée est inférieur ou
égal à 16 A par phase
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
E
CODE PRIX
ICS 33.100.20 ISBN 978-2-88910-381-2
– 2 – 61000-4-14 Amend. 2 © IEC:2009
FOREWORD
This amendment has been prepared by subcommittee 77A: Low frequency phenomena, of
IEC technical committee 77: Electromagnetic compatibility.
The text of this amendment is based on the following documents:
Enquiry draft Report on voting
77A/669/CDV 77A/685/RVC
Full information on the voting for the approval of this amendment can be found in the report
on voting indicated in the above table.
The committee has decided that the contents of this amendment and the base publication will
remain unchanged until the maintenance result date indicated on the IEC web site under
"http://webstore.iec.ch" in the data related to the specific publication. At this date, the
publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
_____________
Main title
Replace the part title on the cover page, the title page, above the Foreword and the Scope by
the following:
Part 4-14: Testing and measurement techniques –
Voltage fluctuation immunity test for equipment
with input current not exceeding 16 A per phase
2 Normative references
Replace the existing text of the first paragraph by the following new text:
The following referenced documents are indispensable for the application of this document.
For dated references, only the edition cited applies. For undated references, the latest edition
of the referenced document (including any amendments) applies.
Convert dated references into undated references.
5 Test levels
Replace the entire text after Table 1 with the following new text:
The repetition period T and the duration t of the voltage fluctuations are specified as T = 5 s
and t = 2 s (see Figure 1d).
The changes from the initial voltage to the test voltage, or from the test voltage back to the
initial voltage are achieved through five successive voltage steps in five consecutive cycles of

61000-4-14 Amend. 2 © IEC:2009 – 3 –
the mains supply, see Figure 1d. Each voltage step is of ΔU/5 and occurs over π/2 radians of
the period of the nominal frequency, f , (e.g. 5 ms for 50 Hz) see Figure 1b and Figure 1c.
n
For falling voltage changes, the voltage step begins at phase angle φ = 270° and finishes at
φ = 360°, see Figure 1b.
For rising voltage changes, the voltage step begins at phase angle φ = 180° and finishes at
φ = 270°, see Figure 1c.
x is an open test level. This value may be defined by the product standard in order to cover
situations other than the normal operating conditions of the network.
All of the levels can be proposed by the product committee, but for equipment for use in
public supply systems, the values shall not be lower than those specified for class 2.
NOTE The upper and lower voltage operation limits defined by the product manufacturer should not be exceeded.
6.2 Characteristics and performance of the test generator
Replace the existing Table 2 by the following new Table:
Table 2 – Characteristics of the test generator
Output voltage capability U ± 15 %
n
Voltage accuracy ±1 %
Zero crossing accuracy 250 μs at zero voltage crossover
The generator shall be able to supply enough current
Output current capability
according to the type of EUT in the test voltage range.
Overshoot/undershoot of the actual voltage Less than 5 % of the change in voltage
Voltage rise (and fall) time during switching Under 1 ms
Maximum interphase error (three-phase power supply) 2,5°
Frequency accuracy 2,5 % of f (50 Hz or 60 Hz)
n
NOTE The generator with a power amplifier specified in IEC 61000-4-11 is suitable for this test. An over-
voltage capability of U + 15 % is necessary.
n
6.3 Verification of the test
...