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BS EN 61000-3-3:2013+A1:2019

BS EN 61000-3-3:2013+A1:2019

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Electromagnetic compatibility (EMC) – Limits. Limitation of voltage changes, voltage fluctuations and flicker in public low-voltage supply systems, for equipment with rated current ≤ 16 A per phase and not subject to conditional connection

Published By Publication Date Number of Pages
BSI 2019 44
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This part of IEC 61000 is concerned with the limitation of voltage fluctuations and flicker impressed on the public low-voltage system.

It specifies limits of voltage changes which may be produced by an equipment tested under specified conditions and gives guidance on methods of assessment.

This part of IEC 61000 is applicable to electrical and electronic equipment having an input current equal to or less than 16 A per phase, intended to be connected to public low-voltage distribution systems of between 220 V and 250 V line to neutral at 50 Hz, and not subject to conditional connection.

Equipment which does not comply with the limits of this part of IEC 61000 when tested with the reference impedance Zref of 6.4, and which therefore cannot be declared compliant with this part, may be retested or evaluated to show conformity with IEC 61000‑3‑11. Part 3-11 is applicable to equipment with rated input current ≤ 75 A per phase and subject to conditional connection.

The tests according to this part are type tests. Particular test conditions are given in Annex A and the test circuit is shown in Figure 1.

NOTE 1 The limits in this standard relate to the voltage changes experienced by consumers connected at the interface between the public supply low-voltage network and the equipment user’s installation. Consequently, if the actual impedance of the supply at the supply terminals of equipment connected within the equipment user’s installation exceeds the test impedance, it is possible that supply disturbance exceeding the limits could occur.

NOTE 2 The limits in this standard are based mainly on the subjective severity of flicker imposed on the light from 230 V 60 W coiled-coil filament lamps by fluctuations of the supply voltage. For systems with nominal voltage less than 220 V line to neutral and/or frequency of 60 Hz, the limits and reference circuit values are under consideration.

PDF Catalog

PDF Pages PDF Title
2 undefined
11 CONTENTS
13 FOREWORD
15 INTRODUCTION
16 1 Scope
2 Normative references
17 3 Terms and definitions
19 4 Assessment of voltage changes, voltage fluctuations and flicker
4.1 Assessment of a relative voltage change, d(t)
4.2 Assessment of the short-term flicker value, Pst
4.2.1 General
20 4.2.2 Flickermeter
4.2.3 Simulation method
4.2.4 Analytical method
Tables
Table 1 – Assessment method
21 4.2.5 Use of Pst = 1 curve
4.3 Assessment of long-term flicker value, Plt
5 Limits
22 6 Test conditions
6.1 General
23 6.2 Measurement uncertainty
6.3 Test supply voltage
6.4 Reference impedance
6.5 Observation period
24 6.6 General test conditions
25 Figures
Figure 1 – Reference network for single-phase and three-phase supplies derived from a three-phase, four-wire supply
26 Figure 2 – Curve for Pst = 1 for rectangular equidistant voltage changes
Figure 3 – Shape factors F for double-step and ramp-voltage characteristics
27 Figure 4 – Shape factors F for rectangular and triangular voltage characteristics
Figure 5 – Shape factor F for motor-start voltage characteristics having various front times
28 Annex A (normative) Application of limits and type test conditionsfor specific equipment
Table A.1 – Test conditions for hotplates
33 Table A.2 – Electrode parameters
34 Table A.3 – Frequency factor R related to repetition rate “r”
36 Annex B (normative) Test conditions and procedures for measuringdmax voltage changes caused by manual switching
37 Annex C (informative) Determination of steady state voltage and voltage change characteristics, as defined in IEC 61000-4-15:2010
40 Table C.1 – Test specification for dc – dmax – td(t) > 3,3 % (from Table 12 of IEC 61000-4-15: 2010)
Table C.2 – Test specification for dc – dmax – td(t) > 3,3 % (from Table 13 of IEC 61000-4-15: 2010)
41 Figure C.1 – Evaluation of Uhp(t)
42 Annex D (informative) Input relative voltage fluctuation ∆V/V for Pst = 1,0 at output [IEC/TR 61000-3-7:2008]
Table D.1 – Input relative voltage fluctuation ∆V/V for Pst = 1,0 at output
43 Bibliography

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BS EN 61000-3-3:2013+A1:2019
$167.15