IEC 61631 pdf download
IEC 61631 pdf download.Test method for the mechanical strength of cores made of magnetic oxides 3 Definitions For the purpose of this International Standard, the following definition applies. 3.1 mechanical strength the maximum recorded force at the instant of fracture of a magnetic oxide core when it is loaded in bending 4 Apparatus 4.1 Test core support and loading wedge...
IEC 60623 pdf download
IEC 60623 pdf download.Secondary cells and batteries containing alkaline or other non-acid electrolytes 1 General 1 .1 Scope This International Standard specifies marking, designation, dimensions, tests and requirements for vented nickel-cadmium prismatic secondary single cells. NOTE In this context, “prismatic” refers to cells having rectangular sides and base. When there exists an IEC standard specifying test conditions and requirements for...
IEC 60925 pdf download
IEC 60925 pdf download.DC supplied electronic ballasts for tubular fluorescent lamps – Performance requirements 1 Scope This standard specifies general performance requirements for electronic ballasts for use on d.c. supplies having rated voltages not exceeding 250 V, associated with fluorescent lamps complying with IEC 60081. It shall be read in conjunction with IEC 60924. Performance requirements for electronic ballasts for...
IEC 61669 pdf download
IEC 61669 pdf download.Electroacoustics – Equipment for the measurement of real-ear acoustical characteristics of hearing aids 1 Scope This International Standard specifies the general requirements for test equipment designed for use in measuring the real-ear acoustical characteristics of hearing aids and describes the terminology used. The purpose of this International Standard is to ensure that measurements of real-ear acoustical characteristics...
IEC 61204 pdf download
IEC 61204 pdf download.Low-voltage power supply devices, d.c. output – Performance characteristics 1 General 1.1 Scope and object This international Standard describes a method for specifying requirements for low-voltage power supply devices (including switching types) providing d.c. output(s) up to 200 V d.c. at a power level of up to 30 kW, operating from a.c. or d.c. source voltages of...
IEC 61563 pdf download
IEC 61563 pdf download.Radiation protection instrumentation – Equipment for measuring specific activity of gamma-emitting radionuclides in foodstuffs 1 Scope and object 1.1 Scope This International Standard applies to portable instruments used for measuring the specific or volumic activity of gamma-emitting radionuclides in food/foodstuffs intended for operation under field conditions, particularly in case of a post-accidental situation. It does not apply...
IEC 62077 pdf download
IEC 62077 pdf download.Fibre optic circulators – Generic specification 1 General 1.1 Scope This International Standard applies to circulators used in the field of fibre optics bearing all of the following features: – they are non-reciprocal optical devices, in which each port is either an optical fibre or optical fibre connector; – they are passive components containing no opto-electronic or...
IEC 60252-1 pdf download
IEC 60252-1 pdf download.General – Performance, testing and rating – Safety requirements – Guide for installation and operation 1 General 1.1 Scope and object This International Standard applies to motor capacitors intended for connection to windings of asynchronous motors supplied from a single-phase system having a frequency up to and including 1 00 Hz, and to capacitors to be connected...
IEC 61584 pdf download
IEC 61584 pdf download.Radiation protection instrumentation – Installed, portable or transportable assemblies – Measurement of air kerma direction and air kerma rate 1 General 1.1 Scope and object 1.1.1 This International Standard is applicable to installed, portable or transportable assemblies intended to measure – the direction of an X or gamma radiation source in terms of azimuth and elevation angles,...
IEC 60529 pdf download
IEC 60529 pdf download.Degrees of protection provided by enclosures (IP Code) 1 Scope and object This standard applies to the classification of degrees of protection provided by enclosures for electrical equipment with a rated voltage not exceeding 72,5 kV. The object of this standard is to give: a) Definitions for degrees of protection provided by enclosures of electrical equipment as...