Standards World

IEC 60898-2:2003 pdf free download - Circuit-breakers for overcurrent protectionfor household and similar installations 1 Scope and object This clause of Part 1 is applicable except as follows:Addition at the end of the first paragraph: This standard...

IEC 60870-4:1990 pdf free download - Telecontrol equipmentand systems lt is intcnded that this part serves as a common platform for thesystem planner and the 'supplier or manufacturer ofteiecontroisystems. The system planner will find the contentshelpful indetermining...

IEC 60825-12:2004 pdf free download - Safety of laser products 1Scope This part of lEC 60825 provides requirements and specific guidance for the manufacture andsafe use of laser products and systems used for point-to-point or point-to-multipoint freespace...

IEC 60812:2018 pdf free download - Failure modes and effects analysis (FMEA and FMECA) For large or complex systems (e.g. a railway), it might be necessary to sub-divide the systeminto subsystems (e.g. rolling stock,signalling，control room) for each...

IEC 60751:2008 pdf free download - Industrial platinum resistance thermometers and platinum temperature sensors 3.2 insulation resistance electrical resistance measured between any part of the electric circuit and the sheath atambient or elevated temperatures and with a...

IEC 60704-2-13:2011 pdf free download - Household and similar electrical appliances -Test code for the determination ofairborne acoustical noise Air-extraction range hoods shall be loaded using a pipe connected to a muffler according toFigure 101.The pipe shall...

IEC 60439-2:2005 pdf free download - Low-voltage switchgear andcontrolgear assemblies 2.3.11 flexible busbar trunking unit busbar trunking unit having conductors and enclosures designed to be bent during installation 2.3.12 busbar trunking feeder unit busbar trunking unit serving...

IEC 60364-5-55:2011 pdf free download - Electrical installations of buildings 551.2.1 The means of excitation and commutation shall be appropriate for the intended useof the generating set and the safety and proper functioning of other sources of...

IEC 60332-1-2:2004 pdf free download - Tests on electric and optical fibre cablesunder fire conditions 1 Scope This part of lEC 60332 specifies the procedure for testing the resistance to vertical flamepropagation for a single vertical electrical...

IEC 60331-1:2009 pdf free download - Tests for electric cables under fire conditions - Circuit integrity 5.2Test ladder and mounting The test ladder shall consist of a steel framework as shown in Figure 1.The two central verticalelements...