Standards
This part of ISO/IEC 9314 specifies the Media access control (MAC) , the middle sublayer of the data link layer (DLL) for fiber distributed data interface (FDDI) .FDDI (ISO/IEC 9314) provides a high -bandwidth (100 Mbit/s).general - purpose interconnection among information processing systems, subsystems and peripheral equipment , using fiber optics or other transmission media. FDDI can be configured to support a sustained data transfer rate of at least 80 Mbit/s (10 Mbytes/s). FDDI provides connectivity for many nodes distributed over distances of many kilometers in extent . Certain default parameter values for FDDDI (e.g. timer settings) are calculated on the basis of up to 1000 transmission links or up to 200 km total fiber path length (typically corresponding to 5000 nodes and 100 km of dual fiber cable, respectively), however, the FDDI protocols can support much larger networks by increasing these parameter values.
This part of ISO/IEC 18026 provides an overview of different techniques of security gateways, of components and of different types of security gateway architectures, it also provides guidlines for selection and configuration of security gateways.
This part of ISO/IEC 20000 defines the requirements for a service provider to deliver managed services of an acceptable quality for its customers
This part of ISO/IEC 20000 represents an industry consensus on quality standards for IT service management processes . These service management processes deliver the best possible service to meet a customer's business needs within agreed resource levels, i.e. Service that is professional cost-effective and with risks which are understood and managed.
This International standard specifies the information to be listed in specification sheets for electrophotograpic digital copying machines and multi-function devices. The intention of this International standard is to allow purchasers and users to compare the characteristics models of copying machines and multi-function devices so that they can more easily select copying machines and multi-function devices that meet their requirements.
Radio communication in which transmissions are intended for direct reception by the general public these may include sound programmes television programmes and other types of transmission.
This international standard applies to single- phase and three phase oil - immersed power transformers including auto-transformer with the exception of certain small and special transformers as defined in the scope of IEC 60076-1 It identifies transformer windings to their highest voltage for equipment Un associated with their corresponding rated insulation levels and details the relevant applicable dielectric tests and minimum external clearances in air between live parts of bushing and to objects at earth potential.
This part of IEC 60076 gives guidance and explanatory comments on the existing procedures for lighting and switching impulse testing of power transformers to supplement the requirements of IEC 60076-3 . It is also generally applicable to the testing of reactors (see IEC 60289 modification to power transforming procedures being indicated where required.
This part of IEC 60076 identifies the requirements for power transformers to sustain without damage the effects of overcurrent's originated by external short circuits. It describes the calculation procedures used to demonstrate the thermal ability of a power transformer to withstand such overcurrent's and both the special test and the theoretical evaluation method used to demonstrate the ability to withstand the relevant dynamic effects, The requirements apply to transformers as defined in the scope of the IEC 60076-1
This part of IEC 60076 is applicable to oil-immersed transformers. It describes the effect of operation under various ambient temperatures and load conditions on transformer life.