Guidelines to the standard EN 61000-3-2 - European Power Supply ...

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3.2 Transitional periods EN 61000-3-2 came into effect on 1995-09-16 (published in The Official Journal of the European Communities) and has replaced EN 60555-2 as of 2001-02-10. The last version of this standard has been accepted by CENELEC on 2006-02-01. It is based on IEC 61000-3-2:2005. In the meantime two amendments (A1:2008 and A2:2009) have been published. Since February 2009 only EN 61000-3-2: 2006 is applicable, all older versions are expired. 3.3 Differences between the standards EN 61000-3-2:2006 and older versions The new version 2006 introduces minor changes and clarifications of requirements for the measurement of the harmonics (repeatability, reproducibility and variability of results of measurements) and the application of the limits (filtered by a low-pass filter with a time constant of 1.5sec). Whereas the scope of the old standard EN 60555-2 was limited to specific types of equipment and their uses, EN 61000-3-2 applies to all electrical and electronic equipment that is connected to the public lowvoltage alternating-current distribution network. Four classes have been introduced (see chapter 5), which have to fulfil different limits of the harmonics currents based on fixed maximum values (class A and class B equipment), as power related limits (class C) or as maximum permissible harmonic current per watt input power (class D). There is no lower power limit for discharge lighting equipment; for other lighting equipment the lower power limit of P≤75W has been lowered to P≤25W. Also medical equipment needs to comply with EN 61000-3-2. 4. Application guidelines The flow chart on page 5 is intended as a guideline for the application of EN 61000-3-2: 2006. Based on the application specific conditions it will determine if the standard is applicable or not and which limits apply. For equipment with line currents exceeding 16A per phase EN 61000-3-12 (Limits for harmonic currents produced by equipment connected to the public low-voltage systems with input currents > 16A and ≤ 75A per phase) may be applicable. Professional equipment that does not comply with the requirements of the standard EN 61000-3-2 may be permitted to be connected to certain low voltage supplies, if the instruction manual contains a requirement to ask the supply utility for permission. * Note: Professional equipment for use in trades, professions or industries and which is not intended for sale to the general public. The designation shall be specified by the manufacturer. Page4 Edition Nov 2010 Disclaimer: No responsibility or liability can be accepted by the EPSMA or any of its officers or members for the content of this guidance document, which does not necessarily guarantee compliance with the requirements of the legislation. Parties will need to satisfy themselves as to the steps to be taken to ensure compliance with legislative requirements and the advice contained herein should not be used as a substitute for taking appropriate advice.
Start Public network & Iphase ≤ 16A? yes Balanced Three-phase equipment? no P ≤ 75W and no ligthing equipment? no Portable tool or nonprofessional arc welding equuipment? no Lighting equipment? no PC or monitor or TV receiver, power P ≤ 600W? no Household equip., tools excluding portable, audio equipment? no Professional equipment power P ≤ 1000W? no EN 61000-3-2 not applicable no * yes yes yes yes yes yes yes ** EN 61000-3-2 not applicable Independent dimmer for incandescent lamps? yes Power P>1000W? yes Figure 1: Flow chart Class B Class C Class D Class A Page5 Edition Nov 2010 Disclaimer: No responsibility or liability can be accepted by the EPSMA or any of its officers or members for the content of this guidance document, which does not necessarily guarantee compliance with the requirements of the legislation. Parties will need to satisfy themselves as to the steps to be taken to ensure compliance with legislative requirements and the advice contained herein should not be used as a substitute for taking appropriate advice. no no * EN 61000-3-12 may be applicable ** Professional equipment P
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