IEC 61286 pdf download
IEC 61286 pdf download Information technology – Coded graphic character set for use in the preparation of documents used in electrotechnology and for information interchange 1Scope This International Standard specifies a standardized coded graphic character set for use indrawings and diagrams, and for the design of graphical symbols. 2Normative references The following normative documents contain provisions, which, through reference in...
IEC 61334-6 pdf download
IEC 61334-6 pdf download Distribution automation using distribution line carrier systems – Part 6: A-XDR encoding rule 1 Scope and object This part of lEC 61334 defines a set of encoding rules – the A-XDR3) encoding rules – thatmay be used to derive the specification of a transfer syntax for values of types defined in theDLMS core standard using the...
IEC 61346-2 pdf download
IEC 61346-2 pdf download Industrial systems, installations and equipment and industrial products – Structuring principles and reference designations – Part 2: Classification of objects and codes for classes 1Scope This part of lEC 61346 defines object classes and associated letter codes for these classes tobe used in reference designations. The classification schemes are applicable for objects in all technical areas...
IEC 61378-2 pdf download
IEC 61378-2 pdf download Convertor transformers — Part 2: Transformers for HVDC applications 7.5 Determination of hot-spot temperature The procedure to determine the hot-spot temperature shall be in accordance with section 2 ofIEC 60354. lt should be noted that the hot-spot temperature rise determined by this proceduremay not be the same as the value likely to be obtained in normal...
IEC 61468 pdf download
IEC 61468 pdf download Nuclear power plants – In-core instrumentation – Characteristics and test methods of self-powered neutron detectors 1Scope and object This International Standard applies to in-core neutron detectors and instrumentation which aredesigned for purposes important to safety: protection, control and information. lt is restricted tocharacteristics and test methods for self-powered neutron detectors (SPNDs).Self-poweredneutron detectors can be used for...
IEC 61478 pdf download
IEC 61478 pdf download Live working – Ladders of insulating material 1 scope This International Standard is applicable to fully insulating spliced or hook ladders withextension or having a combination of insulating and conductive sections and used for liveworking on a.c. or d.c. electrical installations at 1 000 v and above for a.c. and 1 500 V andabove for d.c....
IEC 61504 pdf download
IEC 61504 pdf download Nuclear power plants – Instrumentation and control systems important to safety – Plant-wide radiation monitoring 1 Scope and object This International Standard provides guidance on the design principles and performancecriteria for computer-based radiation monitoring systems (RMS). such systems are providedto integrate the monitoring of plant-wide processes, effluent streams,and area radiation. This standard describes the integration of...
IEC 61518 pdf download
IEC 61518 pdf download Mating dimensions between differential pressure (type) measuring instruments and flanged-on shut-off devices up to 413 bar (41,3 MPa) Scope This International Standard is applicable to differential pressure (type) measuring instruments(instrument) with a shut-off device (manifold) directly bolted on to them. This standard specifies mating dimensions and tolerances，threads, bolts,and gaskets for amaximum allowable working pressure of 41,3...
IEC 61520 pdf download
IEC 61520 pdf download Metal thermowells for thermometer sensors – Functional dimensions 1Scope This International Standard specifies functional dimensions for metal thermowells for thermo-meter sensors of nominal diameters ranging from 3 mm to 8 mm for use in process control. 2Terms and definitions For the purposes of this International Standard, the following terms and definitions apply: 2.1 thermowells protective parts...
IEC 61562 pdf download
IEC 61562 pdf download Radiation protection instrumentation – Portable equipment for measuring specific activity of beta-emitting radionuclides in foodstuffs This International Standard applies to portable instruments used for measuring the specificactivity of beta-emitting radionuclides in food/foodstuffs and intended for operation under fieldconditions. This does not apply to low background laboratory instrumentation requiring highlyskilled personnel. The instruments designed for measurement of...