IEC 60670-1:2002 pdf free download.Boxes and enclosures for electrical accessories for household and similar fixed electrical installations - Part 1: General requirements. 3.6 exposed conductive part conductive part of electrical eqwpment,...

IEC 2022-10-07 1

IEC 60470:2000 pdf free download.High-voltage alternating current contactors and contactor-based motor-starters. contactors or starters combined，under specified conditions，with their own short-circuitprotective devices. Such combination...

IEC 2022-10-07 1

IEC 60404-1:2000 pdf free download.Magnetic materials -Part 1: Classification. 2.2.1.3 Main applications The materials are used for large d.c. magnets where no mechanical strength is required, for example deflection magnets in elementary pa...

IEC 2022-10-07 1

IEC 60300-3-5:2001 pdf free download.Dependability management -Part 3-5: Application guide - Reliability test conditions and statistical test principles. 3.1.18 low degree of simulation test conditions where the varying environmental and op...

IEC 2022-10-07 1

IEC 60143-4:2010 pdf free download.Series capacitors for power systems- Part 4: Thyristor controlled series capacitors. 4.6 SSR mitigation When properly designed and applied, TCSC can provide a degree of SSR mitigation when operated with a...

IEC 2022-10-07 1

IEC 60079-0:2011 pdf free download.Explosive atmospheres - Part 0: Equipment - General requirements. 3.5.9 primary ciii or battery electrochemical system capable of producing electrical energy by chemical reaction 3.5.10 reverse charging ac...

IEC 2022-10-07 1

IEC 60068-2-18:2000 pdf free download.Environmental testing -Part 2-18: Tests - Test Rand guidance: Water. - Support of the test specimen The support shall have a base area which Is smaller than the base area of the specimen. The support sh...

IEC 2022-10-07 1

BS IEC 60076-21:2011 pdf free download.Power transformers Part 21: Standard requirements, terminology,and test code for step-voltage regulators. current transformer: An instrument transfonner intended to have its primary winding connected i...

IEC 2022-10-07 1

AS/NZS IEC 60825.14:2011 pdf free download.Safety of laser products Part 14: A user's guide. 4.3.3 Angle of acceptance for the ass.ssm.nt of .xposur. from extended sourc.s The majority of single lasers represent small sources, since the ang...

IEC 2022-10-07 1

IEC TR 60909-1:2002 pdf free download.Short-circuit currents in three-phasea.c.systems - Part 1: Factors for the calculation of short-circuitcurrents according to lEC 60909-0. • neglecting loads and capacitances by calculating according t...

IEC 2022-10-07 1