AS/NZS 61000.3.5:1998

1 - AS/NZS 61000.3.5:1998 ELECTROMAGNETIC COMPATIBILITY (EMC) - LIMITS - LIMITATION OF VOLTAGE FLUCTUATIONS AND FLICKER IN LOW-....
4 - PREFACE
6 - CONTENTS
7 - 1 Scope
7 - 2 Normative references
8 - 3 Definitions
8 - 4 Equipment assessment
8 - 4.1 General
8 - 4.2 Information from the consumer
8 - 4.3 Information from the electricity supplier
8 - 4.4 Information from the manufacturer
9 - 4.5 Measurement procedure for the type test for equipment with a rated input current up to 75 A
9 - 4.5.1 Test impedance Z*
9 - 4.5.2 Test of equipment against Z*
9 - 4.5.3 Evaluation against Z ref
10 - 4.6 Evaluation and declaration by the manufacturer of equipment with a rated input current up to 75 A
10 - 4.6.1 Check of the measured values against the limits contained in IEC 1000-3-3
10 - 4.6.2 Calculation of the maximum permissible system impedance
11 - 4.7 Evaluation of equipment with a rated input current exceeding 75 A
12 - Annex A - Recommended questionnaire for the consumer
12 - A.1 Main purpose of the equipment
12 - A.2 Electrical characteristics of the equipment
13 - A.3 Work cycle
13 - A.4 Disturbance limitation
13 - A.5 Compliance with standards and rules
13 - A.6 References
14 - Annex B - Recommended questionnaire for the electricity supplier
15 - Annex C - Explanations
15 - C.1 Explanation of 4.5.1
15 - C.2 Explanation of 4.6.2
16 - C.3 Explanation of 4.7
18 - Annex D - Diagrammatic representation of procedures to be followed in evaluating voltage fluctuations and flicker disturbances..

Specifies the limitation of voltage fluctuation and flicker in low-voltage supply systems for equipment with a rated input current greater than 16 A. This Standard is identical with and has been reproduced from IEC 61000-3-5:1994.

This section of IEC 1000-3 is concerned with the emission of disturbances due to voltage fluctuations and flicker.The recommendations in this Technical Report are applicable to electrical and electronic equipment intended to be connected to a public low-voltage a.c. distribution system, where the equipment has a rated input current exceeding 16 A per phase, or has a lower rated current, but requires the special consent of the supply authority.The recommendations that specify the information required to enable a supply authority, manufacturer, or consumer to assess equipment and appropriate questionnaires are included as annexes A and B.Guidance is also given on emission values of voltage fluctuations produced by equipment which has been type tested to the specified conditions given in IEC 1000-3-3.NOTE 1 - The limits recommended in this report are mainly based on the subjective severity of the flicker of the light output from 230 V/60 W coiled-coil filament lamps as a result of fluctuation of the supply voltage. For systems with nominal voltages less than 220 V, line-to-neutral, limits, and reference circuit values have not yet been considered.The authorization to connect equipment to the supply depends on the levels of disturbance caused by the equipment and the load flow conditions in the network.NOTE 2 -- For equipment requiring authorization, only general recommendations for the assessment of disturbances can be given. There is no guarantee that the connection of equipment complying with the recommendations in clause 3 will be allowed in all cases, as system loading must not exceed plant ratings (transformers, cables, etc.).The methods of assessment may be applied also to private consumer installations.

First published as AS/NZS 6100.3.5:1998.