Standards

Part 4-41 pf IEC specifies essential requirements regarding protection against electric shock. Including basic protection (protection against direct contact) and fault protection (protection against indirect contact) of persons and livestock. It deals also with the application and co-ordination of these requirements in relation to external influences.

This standard applies to the installation of electric floor and ceiling heating systems which are erected as either thermal storage healing systems or direct heating systems, It does not apply to the installation of well healing systems. Heating systems for use outdoors are not considered.

This section deals with baseband-to-baseband measurement for frequency division multiplex (f.d.m.) telephony. These measurement are additional to those already given in part 1, section four of this publication . Measurements in the baseband, which are coming to telephony and to television for example group-delay and amplitude/frequency characteristics.

This International standard specifies a digital time and control code for use in television, film, and accompanying audio systems operating at 30,25,and 24 frames per second. Clauses 4,5 and 6 specify the manner in which time is represented in frame- based systems, Clause 7 describes the structure of the time address and control bite of the code, and sets guidelines for storage of user data in the code. Clause 8 specifies the modulation method and interface characteristics of a linear time code (LTC) source, Clause 9 specifies modulation method for inserting the code into the vertical interval of a television signal. Clause 10 summarizes the relationship between the two forms of time and control code.

This Part 1 of International standard IEC 50598 specifies general requirements for luminaires incorporating electric light sources for operation from supply voltages up to 1000V. The requirements and related tests of this standard cover, classification , marking , mechanical construction and electrical construction .

This International standard applies to the basic safety and essential performance of medical electrical equipment and medical electrical systems, hereafter referred to as ME equipment and ME systems. If a clause or sub clause is specifically intended to be applicable to Me equipment only , or to ME systems only. the little and content of that clause will say so . It that is not the case, the clause or sub clause applies both to ME equipment and to ME systems as relevant.

This standard applies to the safety of medical electrical , electrical systems, as defined in 2.201. It describes the safety requirements necessary to provide protection for the patient, the operations and surroundings.

This standard applies to electromagnetic compatibility of medical electric equipment and medical electrical systems, hereinafter referred to as equipment and systems respectively.

This collateral standard applies to medical diagnostic equipment and to sub-assemblies of such equipment. The object of this collateral standard to establish general requirements for protection against ionizing radiation in medical diagnostic X-ray equipment , in order that the dose equivalent to the patient the operator and other staff can be kept as low as reasonably achievable.

This collateral standard applies to the safety of medical electrical equipment and medical electrical system incorporating programmable electrical subsystems (press ), hereinafter referred to as programmable electrical medical systems (PERMS).