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Approvals and test symbolsELECTRO-TECHNOLOGY FOR INDUSTRYGermanischer Lloyd sets standards in technology, quality andsafety for shipping and industry. Germanischer Lloyd is additionallya leading certifying body in the fields of wind power, environmentalprotection, the oil and gas industry and building technology.C US ULLISTED Underwriters LaboratoriesThe Underwriters Laboratories test and register products inaccordance with the requirements of the North American market.The approvals are valid for the USA and Canada.VdS-ZulassungVdS Schadenverhütung GmbHThe Verband der Sachversicherer (VdS) [= Association of MaterialInsurers] tests and certifies components for facilities dealing withdamage prevention. The VdS guidelines contain requirements forcomponents used for protection against fire and burglary.GOSTGOST certifi cation applies to products tested in accordance withthe requirements and standards of the Russian Federation. TheGOST standards cover over 20 industries.Russian Maritime Registerof Shipping (RMS)The Russian Maritime Register of Shipping sets the standardsfor technology, quality and safety for shipping and industry in theRussian Federation. It additionally functions as a certifying body,for example in the fields of defence, the oil and gas industry andbuilding technology.The ‘Physikalish-Technische Bundesanstalt’ (PTB) [= Federal Physical/TechnicalInstitute] is a material testing and calibrating body. It issubdivided into several laboratories and, among other things, testsand approves technical equipment for potentially explosive areas.The existing CENELEC standards form the basis. The PTB is theauthorised EU testing body for the Federal Republic of Germany.Bundesamt für Wehrtechikund BeschaffungThe ‘Bundesamt für Wehrtechnik und Beschaffung’ (BWB) [= FederalOffice of Military Equipment and Procurement] administers andcatalogues the technical equipment of the armed forces. Affiliatedto it are technical defence authorities and arsenals, in which typetesting is carried out in accordance with VG standards. These materialsare listed in the SAK catalogue.Products marked with the Ex test symbol and test number areapproved for use in potentially explosive areas (further detailsfrom page 186 onward).The AS-i (Actuator Sensor Interface) is an inexpensive, fast bussystem for the transmission of data and energy that reduces cablingand saves on I/O cards and terminal strips. AS-Interface productsconform to the EN 50295 and IEC 62026-2 specifications.The ‘International Civil Aviation Organization’ sets standards fortechnology, quality and safety in international air traffi c.The ‚Allgemeine Verwaltungsvorschrift zur Kennzeichnung vonLuftfahrthindernissen‘ (AVV) [= General Administrative Rules forthe Identifi cation of Aviation Obstacles] sets the standards fortechnology, quality and safety in air traffi c in Germany.Schweizerische EidgenossenschaftThe Bundesamt für Verkehr (Federal Ministry of Transport) governspublic transportation in Switzerland. It covers transport by rail andcable car, freight trains, buses and ships.EN54-3The European standard for theapproval of acoustic alarms infi re protection facilities.EN54-23The European standard for theapproval of visual alarms in fi reprotection facilities.15