BS EN 61000 is a series on Electromagnetic compatibility (EMC). The goal of Electromagnetic compatibility is the correct operation of different equipment in a common electromagnetic environment. It is also the name given to the associated branch of electrical engineering. BS EN 61000-2-12 is concerned with conducted disturbances in the frequency range from 0 kHz to 9 kHz, with an extension up to 148,5 kHz specifically for mains signalling systems. BS EN 61000-2-12 gives compatibility levels for public medium-voltage a.c. distribution systems having a nominal voltage between 1 kV and 35 kV and a nominal frequency of 50 Hz or 60 Hz (see IEC 60038).
Compatibility levels are specified for electromagnetic disturbances of the types which can be expected in public medium-voltage power supply systems, for guidance in the limits to be set for disturbance emission into public power supply systems and the immunity limits to be set by product committees and others for the equipment exposed to the conducted disturbances present in public power supply systems.
BS EN 61000-2-12 on Electromagnetic compatibility is useful for:
Electromagnetic compatibility is the ability of electrical equipment and systems to function acceptably in their electromagnetic environment, by limiting the unintentional generation, propagation and reception of electromagnetic energy which may cause unwanted effects such as electromagnetic interference (EMI) or even physical damage in operational equipment. BS EN 61000-2-12 discusses the disturbance phenomena considered are voltage fluctuations and flicker, harmonics up to and including order 50, inter-harmonics up to the 50th harmonic, voltage distortions at higher frequencies (above 50th harmonic), voltage dips and short supply interruptions, voltage unbalance, transient overvoltages, power frequency variation, d.c. components and mains signalling.
Most of these phenomena are described in IEC 61000-2-1. In cases where it is not yet possible to establish compatibility levels, some information is provided. The medium-voltage systems covered by BS EN 61000-2-12 are public distribution systems supplying either private installations in which equipment is connected directly or through transformers or substations feeding public low-voltage distribution systems. The compatibility levels specified in BS EN 61000-2-12 apply at the point of common coupling in the case of (a) and at the medium-voltage terminals of the substation in the case of (b). Using BS EN 61000-2-12 you can understand conducted disturbances in the frequency range from 0 kHz to 9 kHz, with an extension up to 148,5 kHz specifically for mains signalling systems.
EN 61000-2-12 (IEC 61000-2-12:2003) AS
IEC 61000-2-12:2003