Category: EN standards

1 The letter symbols marked by 1) in the table are used throughout technologies in different con- texts, e.g. for quantities and units, as specifed in IEC 27, Part 1 through Part 4 respectively, ISO 31 Part 0 through Part 13, in the design of graphical symbols for functions and products, as specified in IEC 617 Part 1 through Part […]

3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 application programme or user programme logical assembly of all the programming language elements and constructs necessary for the intended signal processing required for the control of a machine or process by a PLC-system 3.2 automated system control system beyond the scope of IEC […]

4 General notes on tests 4.1 Tests according to this specification are type tests. NOTE The requirements and tolerances permitted by this standard are based on testing of a type test sample submitted by the manufacturer for that purpose. In principle this type test sample should consist of units having characteristics typical of the manufacturer’s production and be as close […]

1 Scope This International standard describes methods for the determination of the dielectric dissipation factor (tan δ), relative permittivity and d.c. resistivity of any insulating liquid material at the test temperature. The methods are primarily intended for making reference tests on unused liquids. They can also be applied to liquids in service in transformers, cables and other electrical apparatus. However […]

5.1.2.1 Test procedure A The machine tool shall be tested according to the immunity requirements laid down in this standard (see 5.2 to 5.6 and Annex A). For tests, the machine tool shall operate as specified by the manufacturer. The performance criteria (Table 2) shall be used to check the performance of a machine tool before, during and after each […]

4.2 The grease supplier shall provide a unique name or code for the grease, and shall retain details of the grease composition for verification purposes. The composition shall include manufacturing tolerances and shall remain unchanged while the grease is marketed under the specific name or code, unless agreement has been reached with the conductor user. 5 Requirements for grease 5.1 […]

1 Scope This clause of Part 1 is applicable except as follows: 1.1 Addition: This standard applies to chain saws but does not apply to chain saws operated by two persons and to pole cutters and pruners. This standard does not give requirements for the design of the tool to reduce the risks arising from noise and vibration. 2 Definitions […]

1 Scope This European Standard specifies the environmental conditions encountered within Europe. It can also be applied elsewhere by agreement between the supplier and the customer. The scope of this European Standard covers the design and the use of equipment and any portable equipment for signalling and telecommunications systems (including test, measure, monitoring equipment, etc.). The portable equipment must comply […]

1 Scope 3 This standard gives guidance on writing the technical specification for the procurement of motors for use in electricity generating stations (power stations). This Guide for procurement is not applicable to equipment for use in the nuclear reactor plant area of nuclear power stations. Other possible applications of such equipment have not been considered in the preparation of […]

1 Scope This document specifies a gas chromatographic method using mass spectrometric detection for the determination of 3-monochloropropane-1 ,2-diol (3-MCPD) in hydrolysed vegetable proteins and other foodstuffs [1 ]. The method has been validated in interlaboratory studies for malt extract, soup powder, bread crumbs, salami sausage, cheese alternative and hydrolysed vegetable protein. 2 Principle The sample is mixed with a […]