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1 Scope This part of IEC 61 804 is applicable to Function Blocks (FB) for process control. This standard specifies FB by using the result of harmonization work as regards several elements: c) the device model which defines the components of an IEC 61 804-2 conformant device; d) conceptual specifications of FBs for measurement, actuation and processing. This includes general […]

1 Scope and object This part of IEC 61 000 for EMC immunity requirements applies to electrical and electronic apparatus intended for use in residential, commercial and light-industrial environments. Immunity requirements in the frequency range 0 Hz to 400 GHz are covered. No tests need to be performed at frequencies where no requirements are specified. This generic EMC immunity standard […]

1 Scope This International Standard provides general rules for the use of certain colours or alphanumerics to identify conductors with the aim of avoiding ambiguity and ensuring safe operation. These conductor colours or alphanumerics are intended to be applied in cables or cores, busbars, electrical equipment and installations. 2 Normative references The following referenced documents are indispensable for the application […]

1 Scope This International Standard specifies outside diameters for conduits used in electrical installations or in communication systems and the dimensional requirements for threads. It also specifies the dimensional requirements for threads used in associated fittings. It is not applicable to extra heavy-duty electrical rigid steel conduits specified in IEC 60981 . 2 Normative references The following referenced documents are […]

1 .4 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. IEC 60384-1 :1 999, Fixed capacitors for use in electronic equipment – Part 1: Generic specification IEC 60384-24:2006, Fixed capacitors for use […]

5 Types of protection 5.1 General Three types of protection can be applied to prevent ignitions by optical radiation in potentially explosive atmospheres. These types of protection encompass the entire optical system. These types of protection are a) inherently safe optical radiation, type of protection “op is”; b) protected optical radiation, type of protection “op pr”; c) optical system with […]

1 Scope This European Standard describes data sheet and product data information for crystalline silicon solar cells. The intent of this standard is to provide minimum information required to configure safe and optimal photovoltaic modules. In this context, data sheet information is a technical description separate from the photovoltaic module. Product data information concerns the packaging, marking, storage and containing […]

1 Scope This European Standard specifies a marking .of electrical and electronic equipment in accordance with Article 11(2) of Directive 2002196EC wWEEEX; NOTE This ls in addtian to the marking rnqulrmant in Aricie 10(3) of this Dlracdiva which requres producars to maslecir cal sand elociroric oquipment purt an the mearket after 13 August 2006 with a cr085ed-onu,wheeled bhini symbol. that […]

7.2 Thermal abuse Battery systems for portable appliances shall not be overheated. Overheating due to service conditions will destroy the battery and, in individual cases, the equipment as well. Depending on the type of battery corrosive and/or toxic liquids or gases may be released. Therefore batteries shall be inserted into the appliances in such a way that their permissible temperature […]

1 Scope This European Standard applies for thermal sprayed coatings. It contains basic recommendations for the design of components, which have to be completely or partially coated. The recommendations apply for new manufacturing as well as for repair of worn components. The coating may be of metallic, metal-ceramic, oxide-ceramic materials or polymers. 2 Normative references The following referenced documents are […]