IEC 61834-9 pdf download
IEC 61834-9 pdf download Recording – Helical-scan digital video cassette recording system using 6,35 mm magnetic tape for consumer use (525-60, 625-50, 1 1 25-60, 1 250-50 systems) – Part 9: DVB format 1 General 1.1Scope This part of lEC 61834 specifies the content, format and recording method for the data blocksforming the helical records on the tape containing audio，...
BS IEC 61520 pdf download
BS IEC 61520 pdf download Metal thermowells for thermometer sensors — Functional dimension 1 Scope This International Standard specifies functional dimensions for metal thermowells for thermometer sensors of nominal diameters ranging from 3 mm to 8 mm for use in process control. 2 Terms and definitions For the purposes of this International Standard, the following terms and definitions apply: 2.1...
IEC 60092-506 pdf download
IEC 60092-506 pdf download Electrical installations in ships – Part 506: Special features – Ships carrying specific dangerous goods and materials hazardous only in bulk 4.3 Dangerous goods as defined in 1.2b) and 1 .2c) 4.3.1 Classes 4.1, 4.2, 9 and MHB capable of creating explosive dust atmosphere Hazardous areas (comparable with zone 1 ): a) closed cargo spaces as...
IEC 60095-1 pdf download
IEC 60095-1 pdf download Lead-acid starter batteries – Part 1 : General requirements and methods of test 1.1Scope and object This part of lEC 60095 is applicable to lead-acid batteries with a nominal voltage of 12 v,used primarily as a power source for the starting and igniting of internal combustion engines,lighting and for auxiliary equipment of internal combustion engine vehicles....
IEC 60099-5 pdf download
IEC 60099-5 pdf download Surge arresters – Part 5: Selection and application recommendations For range I systems containing overhead lines, the main risk to equipment arises from induced and direct lightning strokes to the connected overhead lines. In cable systems not connected to overhead lines, overvoltages due to faults or switching operations are most likely to occur. In rare cases,...
IEC 60112 pdf download
IEC 60112 pdf download Method for the determination of the proof and the comparative tracking indices of solid insulating materials 1 Scope This International standard specifies the method of test for the determination of the proof andcomparative tracking indices of solid insulating materials on pieces taken from parts ofequipment and on plaques of material using alternating voltages. The standard provides...
IEC 60139 pdf download
IEC 60139 pdf download Preparation of outline drawings for cathode-ray tubes, their components, connections and gauges 1Scope This International Standard gives guidance on the preparation of outline drawings of cathode-ray tubes (CRTs), tube components, tube sub-assemblies and ancillary components with theobject of encouraging the same practice when publications are prepared in different countries.These recommendations are contained in the specimen drawings，descriptive...
BS EN IEC 60188 pdf download
BS EN IEC 60188 pdf download High-pressure mercury vapour lamps — Performance specifications 1General 1.1Scope This standard specifies the performance requirements for high-pressure mercury vapour lamps forgeneral lighting purposes, with or without a red correcting fluorescent coating. For some of the requirements given in this standard， reference is made to “the relevant lamp datasheet”. For some lamps these data sheets...
IEC 60192 pdf download
IEC 60192 pdf download Low pressure sodium vapour lamps — Performance specification 1General1.1scope This standard specifies the performance requirements for low-pressure sodium vapour lampsfor general lighting purposes. For some of the requirements given in this standard, reference is made to “the relevant lampdata sheet”. For some lamps these data sheets are contained in this standard. For otherlamps, falling under the...
IEC 60204-31 pdf download
IEC 60204-31 pdf download Safety of machinery – Electrical equipment of machines – Part 31: Particular safety and EMC requirements for sewing machines, units and systems This part of lEC 60204 applies to the application of electrical and electronic equipment tosewing machines, units and systems, designed specifically for professional use in the sewingindustry. NOTE See lEC 60335-2-28 for requirements for...