Standards World

IEC 61837-2:2000 pdf free download - Surface mounted piezoelectric devicesfor frequency control and selection - Standard outlines and terminal lead connections 1Scope This part of lEC 61837 deals with standard outlines and terminal lead connections as theyapply...

IEC 62598:2011 pdf free download - Nuclear instrumentation - Constructional requirements and classification ofradiometric gauges 5.1Measuring gap ln order to prevent persons placing their hands or any other part of their body in the usefulbeam，the gauges shall...

IEC 62435-7:2020 pdf free download - Electronic components - Long-term storage of electronic semiconductordevices 4.1overview of MEMS applications MEMS (Micro-electromechanical Systems) are miniaturized mechanical or electromechanicalelements that typically vary in size from 1 micron to 1 000...

IEC 62321-10:2020 pdf free download - Determination of certain substances in electrotechnical products 1 Scope This part of lEC 62321 specifies one normative technique for the determination of polycyclicaromatic hydrocarbons (PAHs) in polymers of electrotechnical products. These...

IEC 61991:2000 pdf free download - Railway applications -Rolling stock - Protective provisions againstelectrical hazards 1Scope IEC 61991 offers a set of rules that are applied in the design and manufacture of electricalinstallations and equipment to be...

IEC 61958:2000 pdf free download - High-voltage prefabricated switchgear andcontrolgear assemblies 1.1Scope This International Standard is applicable to voltage presence indicating systems (vPIS) incor-porated in a.c.switchgear and controlgear covered by IEC 60298 or lEC 60466. Voltage presence...

IEC 61851-25:2020 pdf free download - Electric vehicle conductive charging system 1 Scope This document applies to the DC EV supply equipment for charging electric road vehicles witha rated supply voltage of up to 480 v AC...

IEC 61839:2000 pdf free download - Nuclear power plants -Design of control rooms - Functional analysis and assignment 1 Scope and object This International Standard specifies functional analysis and assignment procedures (FAand A, sometimes called allocation of...

IEC 61788-26:2020 pdf free download - Superconductivity 1 Scope This part of lEC 61788 specifies a test method for determining the DC critical current of shortRE(rare earth)-Ba-Cu-O(REBCO) composite superconductor specimens that have a shape ofstraight flat tape.This...

IEC 61788-17:2021 pdf free download - Superconductivity 5.1 Measurement equipment Figure 1 shows a schematic diagram of a typical electric circuit used for the third-harmonicvoltage measurements. This circuit is comprised of a signal generator, power amplifier, digitalmultimeter...