IEC EN 61000-2-12 Electromagnetic Compatibility (EMC) - Part 2-12: Environment - Compliance Levels for Low Frequency Conducted Disturbances and Signaling in General Medium Voltage Power Supply Systems

EUROLAB, with its state-of-the-art accredited laboratories and expert team, provides precise and fast testing services within the scope of IEC EN 61000-2-12 testing. This part of IEC EN 61000 deals specifically with transmitted disturbances in the frequency range 148,5 kHz to 0 kHz with an extension up to 9 kHz for network signaling systems. It gives compatibility levels for general medium voltage ac.

Compliance levels are specified for the following types of electromagnetic disturbances that can be expected in general medium voltage power supply systems for guidance on:

• Limits to be set for disturbance emission to public power supply systems;
• Immunity limits to be set for equipment subject to conducted disturbances present in public power supply systems by product committees and others.

The degradation events considered are:

• Voltage fluctuations and flicker;
• harmonics up to and including 50th degree;
• Interharmonics up to the 50th harmonic;
• Voltage distortions at high frequencies (above the 50th harmonic);
• Voltage dips and short supply interruptions;
• Voltage imbalance;
• transient overvoltages;
• Power frequency variation;
• DC components;
• Network signal.

At the terminals of the equipment supplied by the medium voltage network, which is the subject of this standard, the severity of disturbances can in most cases be considered equal to that at the point of connection common to the general grid.

It differs in certain situations, especially in the following cases:

• Long line designed to accommodate a particular installation;
• Equipment that is part of a very large installation;
• Discomfort produced or magnified in the installation of which the equipment forms part.

EUROLAB assists manufacturers with IEC EN 61000-2-12 test compliance. Our test experts, with their professional working mission and principles, provide you, our manufacturers and suppliers, the best service and controlled testing process in our laboratories. Thanks to these services, businesses receive more effective, high-performance and quality testing services and provide safe, fast and uninterrupted service to their customers.