ZyXEL Communications PLA-470 V2 - V3.0.5 Guía de instalación descargar pdf (Pagina 24)

COMPANY STANDARD:

Consensus among the employees of an organization.

CONSORTIUM STANDARD:

Consensus among a small group of organizations, usually like-minded companies

formed to undertake an activity that is beyond the resources of any one member. An

example of a consortium is the United States Council for Automotive Research’s

(USCAR’s) Strategic Standardization Board, which reflects USCAR’s commitment

to managing standards issues with regard to competitiveness.

INDUSTRY STANDARD:

Consensus among the many companies within an association or professional soci-

ety. An example is a standard developed by the American Petroleum Institute (API),

a trade association that is comprised of many different petroleum companies.

GOVERNMENT STANDARD:

May reflect many degrees of consensus. Some are written by individuals in govern-

ment agencies, many are now being developed in the private sector and then

adopted by reference as mandatory standards. Standards incorporated into federal

regulations under the jurisdiction of the Environmental Protection Agency (EPA) or

the Occupational Safety and Health Administration (OSHA) are examples of gov-

ernment standards.

According to the ISO, an international standard is “any document intended for

a repetitive application, approved by a recognized standardization body and made

available to the public.”

Afnor completes this definition in the following way: “An international stan-

dard is reference information resulting from a carefully thought out collective

choice to be used as an action base to solve repetitive problems.”

We must point out that in relation to regulation, an international standard only

defines methods and rules; therefore these are not mandatory, unlike regulations.

As indicated previously, for Europe, the regulatory framework is set by new

approach directives which list the essential requirements that the product must

meet. The harmonized European standards, when in compliance with their require-

ments, presumably ensure compliance with these essential requirements.

The importance of harmonized international standards is illustrated by the CE

marking. This marking, which allows a product to be circulated freely around

Europe, is a declaration from the manufacturer indicating that its product satisfies

the essential requirements of the European directives concerning it.

The PLC equipment must satisfy the requirements of the EMC (electromagnetic

compatibility) and LV (low voltage) directives.

A distinction should always be made between the work on the product and the

work relating to the system, to the network in the case of PLC. To date, the work

carried out on the product amends the CISPR 22, international publication,

whereas, the work concerning the network is exclusively European and is dealt with

by the Cenélec/ETSI Joint Working Group.

This work aims to make available a harmonized international standard on net

works following the M 313 mandate given by the European commission to the

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ZyXEL Communications PLA-470 V2 - V3.0.5 Guía de instalación Pagina 24

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