EMC directives

Directive 89/336/EEC on electromagnetic compatibihty (the EMC Directive) EMC requirements are included within the essential requirements of the MDDs so the EMC Directive only applies to MDs before the relevant MDD is applicable. 

Directives are the European laws published in the Official Journal that give us the essential health and safety requirements (EHSRs) that shall be followed by product suppliers. These are commonly called the Essential Requirements (ERs). The directives deal with legal and procedural issues, such as assessment procedures, certification, implementation, enforcement, technical files, declarations, CE marking, and other basic concepts. Examples of primary directives are the Low-Voltage, Machinery, and EMC directives. The General Product Safety and Product Liability Directives are basic directives dealing with enforcement and civil prosecution that are applied to all products. The directives also mandate the publication and mutual recognition of harmonized standards. 

EMC Directive 89/336/EEC issued for electrical products, appliances, machinery, etc. (immunity and emissions). 

Quality assurance techniques (e.g.. ISO 9(X)0 factory quality), are not relevant for modules A, Aa, or B-C and may not take the place of the safety/EMC directives for product conformity. 

Note. In all three cases, the CE marking, declaration, and technical file shall be in place. ISO 9000 factory quality techniques are not a part of modules A, Aa or B-C (see Product Quality versus Factory Quality in Chapter 5). The relevant safety/EMC directives and conformity assessment modules still apply. 

The EMC Directive sometimes mandates the use of a competent body for mandatory certification and a special file called the technical construction file (TCP). This is the case when no harmonized standards exist or they are applied only... 

The EMC directive is a new approach directive laying down apparatus protection requirements and leaving it to standards, primarily harmonized standards, to define product characteristics. ... 

The EMC directive allows CE marking of components that (1) have an intrinsic function and (2) are sold to the end user, but not when sold to manufacturer s or assemblers. Some components may bear CE marking under the EMC directive. Examples of components include personal computer circuit cards, computer disk drives, PLCs, stand-alone power supplies, electric motors (except induction), and electronic temperature controls. 

Protection of cables in walls - section 522 has been rearranged and modified to make it clearer. Amendment 3 at 522.6.202 states that all installations buried at a depth of 50mm or less, which includes cables installed in partitions constructed of metal parts irrespective of depth, shall have 30 mA RCD protection, unless other methods detailed in 522.6.203 have been applied. Compatibility - Regulation 512.1.5 tells us that the installation designer must ensure that all the installed fixed equipment is designed and manufactured in accordance with the Electromagnetic Compatibility (EMC) Directive. Installations composed only of CE marked apparatus will conform to this directive. 

In the Electromagnetic Compatibility Directive (EC 2004) a combination of products installed in a specific place for a specific purpose can be deemed a fixed installation and dierefore not require CE marking, however, the system must still meet the essential requirements of the EMC Directive, dierefore the building s responsible person must construct a Technical Assessment File to demonstrate compliance of the fixed installation with the directive. 

Because our complex assembly contains complex electrical and electronic equipment it is susceptible to eleetromagnetic phenomena and may suffer interference or interruption from the system itself or from co-loeated systems, or may interfere with those systems. The eleetromagnetic compatibility of the assembly will therefore be addressed in aceordanee with Eiuopean EMC standards for industrial environments. Note that whilst the EMC Directive is not a safety directive, it is a CE marking directive and ftierefore applicable to the assembly. 

Compliance with the Low Voltage and Machinery Directives will be self-declared following Module A eonformity assessment proeedure. For the EMC Directive the manufacturer has decided to include a notified body in the compliance process to review, underwrite and reinforce the manufacturer s EMC technical assessment. 

For flic EMC Directive (EC 2004), flic size of the complex machine prevents it being tested fully against the EMC standards, so conformity is based on EMC testing conducted in accordance with generic EMC industrial environment standards and notified body assessment of the manufacturer s EMC technical assessment file. 

EC (2010b) Guide to application of the machinery directive 2006/42/EC. http //ec.europa.eu/ enterprise/sectors/mechanical/files/machinery/guide application directive 2006-42-ec-2nd edit 6-2010 en[l].pdf. Accessed 2 September 2010 EC (2010c) Guide for the EMC directive 2004/108/EC. http //ec.europa.eu/enterprise/sectors/... 

---