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BS EN 61000-3-3:2013+A1:2019 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 condit, 2019
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- CONTENTS
- FOREWORD
- INTRODUCTION
- 1 Scope
- 2 Normative references
- 3 Terms and definitions
- 4 Assessment of voltage changes, voltage fluctuations and flicker [Go to Page]
- 4.1 Assessment of a relative voltage change, d(t)
- 4.2 Assessment of the short-term flicker value, Pst [Go to Page]
- 4.2.1 General
- 4.2.2 Flickermeter
- 4.2.3 Simulation method
- 4.2.4 Analytical method
- Tables [Go to Page]
- Table 1 – Assessment method [Go to Page]
- 4.2.5 Use of Pst = 1 curve
- 4.3 Assessment of long-term flicker value, Plt
- 5 Limits
- 6 Test conditions [Go to Page]
- 6.1 General
- 6.2 Measurement uncertainty
- 6.3 Test supply voltage
- 6.4 Reference impedance
- 6.5 Observation period
- 6.6 General test conditions
- Figures [Go to Page]
- Figure 1 – Reference network for single-phase and three-phase supplies derived from a three-phase, four-wire supply
- Figure 2 – Curve for Pst = 1 for rectangular equidistant voltage changes
- Figure 3 – Shape factors F for double-step and ramp-voltage characteristics
- 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
- Annex A (normative) Application of limits and type test conditionsfor specific equipment [Go to Page]
- Table A.1 – Test conditions for hotplates
- Table A.2 – Electrode parameters
- Table A.3 – Frequency factor R related to repetition rate "r"
- Annex B (normative) Test conditions and procedures for measuringdmax voltage changes caused by manual switching
- Annex C (informative) Determination of steady state voltage and voltage change characteristics, as defined in IEC 61000-4-15:2010 [Go to Page]
- 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)
- Figure C.1 – Evaluation of Uhp(t)
- Annex D (informative) Input relative voltage fluctuation ∆V/V for Pst = 1,0 at output [IEC/TR 61000-3-7:2008] [Go to Page]
- Table D.1 – Input relative voltage fluctuation ∆V/V for Pst = 1,0 at output
- Bibliography [Go to Page]