Page 11 - Louth Transformer Catalogue

LT EMC STATEMENT

With regard to both the EMC (89/336EEC) & Low Voltage (73/23/EEC) Directives
it is Louth Transformer Company’s considered opinion and experience that a
transformer is an inert, benign electrical apparatus, consisting of a core and
windings that will not generate conducted Electromagnetic Interference (EMI).
Although there are radiated emissions, these are only at the electrical supply
frequency, and are screened by the transformer’s earthed metal housing if
applicable.

It must however be noted that any conducted Electromagnetic Interference
(EMI) already present on the electrical supply to a transformer may pass through
it to the load, similarly any load generated interference may pass back through
the transformer on to the supply. This interference will not be amplified by the
transformer and will, in most cases be attenuated due to the inclusion of an
earthed, copper, inter-winding screen, if fitted.

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