Nx Networks NX series General, Technical criteria, NX frequency converter EMC classification

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2.EU DIRECTIVE

2.1 CE marking

The CE marking on the product guarantees the free movement of the product within the EEA (European Economic Area). It also guarantees that the product meets the various requirements defined by the directive.

The NX frequency converters carry the CE label as a proof of compliance with the Low Voltage Directive (LVD) and the Electro Magnetic Compatibility (EMC). The company SGS FIMKO has acted as the Competent Body.

2.2 EMC directive

2.2.1General

The EMC Directive provides that the electrical apparatus must not excessively disturb the environment it is used in, and also, it shall have an adequate level of immunity toward other disturbances from the same environment.

The compliance of the NX frequency converters with the EMC directive is verified with Technical Construction Files (TCF) checked and approved by SGS FIMKO, which is a Competent Body. The Technical Construction Files are used to authenticate the comformity of the NX frequency converters with the Directive due to the large product family & variety of installations possibilities.

2.2.2Technical criteria

The NX frequency converters are marketed throughout the world, a fact which makes the EMC requirements of customers different. As far as the immunity is concerned, all NX frequency converters are designed to fulfil even the strictest requirements, while as regards the emission level, the customer may want to upgrade the NX's already high ability to filter electro-magnetic disturbances.

2.2.3NX frequency converter EMC classification

The NX frequency converters are divided into three classes, according to the level of electromagnetic disturbances emitted. There is no difference in the functions or the control electronics between these classes but their EMC properties vary as follows:

Class H:

All Vacon NX frequency converters have been designed to fulfil the requirements of the product standard EN61800-3 for the 1st environment restricted distribution and the 2nd environment.

The emission levels correspond to the requirements of EN50081-2.

Class L:

The customer has the possibility to upgrade the EMC-disturbance filtering level of the product by ordering the frequency converter with external EMC filters. In such case, the frequency converter complies with the generic standards EN 50081-1, EN 50081-2 and EN 61800-3, 2nd environment (restricted distribution).

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