IEC 60470 pdf download
IEC 60470 pdf download High-voltage alternating current contactors and contactor-based motor-starters 1 General 1.1 Scope and object This International Standard is applicable to a.c. contactors and/or contactor-based motor-starters designed for indoor installation and operation at frequencies up to and including 60 Hzon systems having voltages above 1 00o v but not exceeding 12 000 v. lt is applicable only to...
IEC 60512-1 pdf download
IEC 60512-1 pdf download Connectors for electronic equipment – Tests and measurements – Part 1: General 1General 1.1 Scope and object This part of lEC 60512 is intended to be used as a basic specification. It contains basic testmethods and procedures which, when required by the detail specification, are used for testingconnectors within the scope of technical committee 48.They may...
IEC 60529 pdf download
IEC 60529 pdf download Degrees of protection provided by enclosures (IP Code) Barriers external to the enclosure and not attached to it and obstacles which have beenprovided solely for the safety of personnel are not considered as a part of the enclosure andare not dealt with in this standard. 2Normative references The following normative documents contain provisions which,through reference in...
IEC 60570 pdf download
IEC 60570 pdf download Electrical supply track systems for luminaires 1scope This International Standard applies to the following track systems with two or more poles forthe connection of luminaires to the electrical supply consisting of,either – a system with a rated voltage not exceeding 440 v between poles (live conductors) with provision for earthing (class l) and a rated current...
IEC 60627 pdf download
IEC 60627 pdf download Diagnostic X-ray imaging equipment — Characteristics of general purpose and mammographic anti-scatter grids The arrangement shall be as described in 5.2.2 except that the PRIMARY RADIATION blockerand the ANTI-SCATTER GRID are removed.The MEASURED vALUEs of the detector signal shall beobtained with the detector shielded against the light excited in the FLuORESCENT sCREEN, andwith the detector unshielded....
IEC 60670-22 pdf download
IEC 60670-22 pdf download Boxes and enclosures for electrical accessories for household and similar fixed electrical installations – Part 22: Particular requirements for connecting boxes and enclosures 1 Scope This clause of Part 1 applies with the following addition: Add after the fourth paragraph: This standard applies to connecting boxes for junction(s) and/or tapping(s). NOTE Unless otherwise stated, throughout the...
IEC 60728-9 pdf download
IEC 60728-9 pdf download Cabled distribution systems for television and sound signals – Part 9: Interfaces of cabled distribution systems for digitally modulated signals 1Scope This part of lEC 60728 describes physical interfaces for the interconnection of signal processing devices for professional CATV/ISMATV headend equipment or for similar systems,such as in up-link stations. This standard, in particular, specifies the transfer...
IEC 60746-1 pdf download
IEC 60746-1 pdf download Expression of performance of electrochemical analyzers – Part 1: General 1 Scope This standard is intended: – to specify the terminology and definitions of terms related to the performance charac-teristics of electrochemical analyzers used for the continuous determination of certainaspects of (generally aqueous) solutions; to specify uniform methods to be used in making statements on the...
IEC 60746-2 pdf download
IEC 60746-2 pdf download Expression of performance of electrochemical analyzers – Part 2: pH value 1 scope This lnternational Standard is intended: – to specify terminology,definitions and requirements for statements by manufacturers for analyzers，sensor units and electronic units used for the determination of the pH ofaqueous solutions; to establish performance tests for such analyzers, sensor units and electronic units; to...
IEC 60749-17 pdf download
IEC 60749-17 pdf download Semiconductor devices – Mechanical and climatic test methods – Part 17: Neutron irradiation Once the neutron energy spectrum has been determined and the equivalent monoenergeticfluence calculated, then an appropriate monitor foil (such as 32S,54Fe, or 58Ni) should beused in subsequent irradiations to determine the neutron fluence. Thus, the neutron fluence isdescribed in terms of the equivalent...