IEC 62133 pdf download
IEC 62133 pdf download Secondary cells and batteries containing alkaline or other non-acid electrolytes – Safety requirements for portable sealed secondary cells, and for batteries made from them, for use in portable applications This International Standard specifies requirements and tests for the safe operation of portablesealed secondary cells and batteries (other than button) containing alkaline or other non-acidelectrolyte,under intended use...
IEC 62208 pdf download
IEC 62208 pdf download Empty enclosures for low-voltage switchgear and controlgear assemblies – General requirements 1scope This International Standard applies to empty enclosures，prior to the incorporation ofswitchgear and controlgear components by the user, as supplied by the enclosuremanufacturer. This standard specifies definitions，classifications，characteristics and test requirements ofenclosures to be used as part of switchgear and controlgear assemblies in accordance with theIEC...
IEC 62262 pdf download
IEC 62262 pdf download Degrees of protection provided by enclosures for electrical equipment against external mechanical impacts (IK code) 1 Scope This standard refers to the classification of the degrees of protection provided by enclosuresagainst external mechanical impacts when the rated voltage of the protected equipment is notgreater than 72,5 kV. This standard is only applicable to enclosures of equipment...
IEC 62447-3 pdf download
IEC 62447-3 pdf download Helical-scan compressed digital video cassette system using 6,35 mm magnetic tape – Format D-12 – Part 3: Data stream format 7 Mapping structure The mapping structure defines where SDTl stream blocks are mapped into SDTl frames. An SDTl data block of the fixed-block variety (as used by this standard) is based on onestream block; the stream...
IEC 603570 pdf download
IEC 603570 pdf download Maritime navigation and radiocommunication equipment and systems – General requirements – Methods of testing and required test results 1 Scope This International Standard assists in meeting a requirement of the International Convention for Safety of Life at Sea (SOLAS), adopted by the International Maritime Organization (IMO), that the radio equipment defined in chapters III and IV,...
IEC TR 62248 pdf download
IEC TR 62248 pdf download Approaches to conformance and certification testing for design automation standards 1Scope This Technical Report provides guidelines for test suite specifications and benefits ofconformance and certification testing. 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 editionof the referenced document...
IEC TS-61370 pdf download
IEC TS-61370 pdf download Steam turbines -Steam purity 1 Scope This technical specification describes the importance of the chemical characteristics of steamsupplied to steam turbines and the need to prevent corrosion and deposition in steam space, inorder to minimize the risk of turbine corrosion failures or loss of efficiency or output. Thesignificance of relevant chemical parameters, mostly related to impurity...
IEC 61842 pdf download
IEC 61842 pdf download Microphones and earphones for speech communications 1 Scope This standard applies to the microphone part and earphone part of handsets，headsets orearsets for speech communications,and also to the microphone units and earphone units ofbuilt-in handsets,headsets or earsets.The object of this standard is to establish definitionsrelating to these electroacoustic transducers，and to standardize the characteristics to bespecified and the...
IEC 61888 pdf download
IEC 61888 pdf download Nuclear power plants – Instrumentation important to safety – Determination and maintenance of trip setpoints 1 Scope This standard defines the requirements for assuring that automatic setpoints for nuclearsafety system instrumentation (as defined in clause 3), are established and maintained withinspecified limits in nuclear power plants and nuclear reactor facilities. 2Normative references The following referenced documents...
IEC 61922 pdf download
IEC 61922 pdf download High-frequency induction heating installations – Test methods for the determination of power output of the generator 1 Scope and object This International Standard is applicable to industrial radio- or high-frequency induction heatinginstallations used for the purpose of thermal applications (e.g. for surface hardening,welding.soldering, melting, forging, zone refining of semiconductors,etc.). This standard relates to high-frequency induction heating...