IEC 60702-2 pdf download
IEC 60702-2 pdf download Mineral insulated cables and their terminations with a rated voltage not exceeding 750 V — Part 2: Terminations 5.1.3Explosive atmospheres A seal for use in potentially explosive atmospheres shall, in addition to complying with therequirements of this standard, also satisfy the appropriate requirements specified in IEC 60079-0. 5.1.4corrosion resistance A seal or enclosure shall be made...
IEC 60749-7 pdf download
IEC 60749-7 pdf download Semiconductor devices Mechanical and climatic test methods Part 7: Internal moisture content measurement and the analysis of other residual gases 1 Scope The purpose of this part of IEC 60749 is to test and measure the water vapour and other gas content of the atmosphere inside a metal or ceramic hermetically sealed device. It is applicable...
IEC 60749-18 pdf download
IEC 60749-18 pdf download Semiconductor devices – Mechanical and climatic test methods – Part 18: Ionizing radiation (total dose) 1 Scope This part of lEC 60749 provides a test procedure for defining requirements for testingpackaged semiconductor integrated circuits and discrete semiconductor devices for ionizingradiation (total dose) effects from a cobalt-60 (60co) gamma ray source. This standard provides an accelerated annealing...
IEC 60749-20 pdf download
IEC 60749-20 pdf download SEMICONDUCTOR DEVICES – MECHANICAL AND CLIMATIC TEST METHODS – Part 20: Resistance of plastic-encapsulated SMDs to the combined effect of moisture and soldering heat 1 scope and object This part of lEC 60749 applies to semiconductor devices (discrete devices and integratedcircuits). This test method provides a means of assessing the resistance to soldering heat of plastic-encapsulated...
IEC 60761-5 pdf download
IEC 60761-5 pdf download Equipment for continuous monitoring of radioactivity in gaseous effluents – Part 5: Specific requirements for tritium monitors 5.4Collection medium lf the detection assembly includes an absorbent medium，intended to collect a specificchemical form of tritium，its characteristics,efficiency,retention capacity and delay timeconstant shall be known for the various radioactive gases of significance in the effluent. The manufacturer shall state...
IEC 60895 pdf download
IEC 60895 pdf download Live working – Conductive clothing for use at nominal voltage up to 800 kV a.c. and ± ±600 kV d.c. 1 scope This International Standard is applicable to conductive clothing，either assembled fromcomponent parts or forming a single complete clothing，worn by (electrically) skilled personsduring live working (especially bare-hand working) at a nominal power system voltage up to800...
IEC 60998-1 pdf download
IEC 60998-1 pdf download Connecting devices for low-voltage circuits for household and similar purposes – Part 1: General requirements This part of lEC 60998 applies to connecting devices as separate entities for the connection oftwo or more electrical copper conductors(complying with lEC 60228 or lEC 60344) rigid (solidor stranded) or flexible, having a cross-sectional area of 0,2 mm 2 up...
IEC 61000-2-2 pdf download
IEC 61000-2-2 pdf download Electromagnetic compatibility (EMC) – Part 2-2: Environment – Compatibility levels for low- frequency conducted disturbances and signalling in public low-voltage power supply systems 1 Scope and object This standard is concerned with conducted disturbances in the frequency range from 0 kHz to 9 kHz, with an extension up to 1 48,5 kHz specifically for mains signalling...
IEC 61229 pdf download
IEC 61229 pdf download Rigid protective covers for live working on a.c. installations 1 scope International Standard lEC 61229 is applicable to rigid insulating covers for live working ona.c.installations, including those described in IEC 60743. The barriers， having dielectric withstand which depends on the positioning clearance,areexcluded from this standard. 1.1Classes Six classes of covers,differing in electrical characteristics, are provided and...
IEC 61252 pdf download
IEC 61252 pdf download Electroacoustics – Specifications for personal sound exposure meters 1 Scope 1.1 Sound exposure is a physical measure that accounts for both the sound pressure and its duration, at a given location, through an integral-over-time of the square of instantaneous frequency-weighted sound pressure. 1.2 This International Standard is applicable to instruments for measurement of A-frequency- weighted sound...