Fuses for use by authorized persons are generally designed to be used in installations where the fuse-links are accessible to, and may be replaced by, authorized persons only. Fuses for use by authorized persons according to the following fuse systems also comply with the requirements of the corresponding subclauses of IEC 60269-1 , unless otherwise […]

This part of IEC 601 30 relates to circular connectors for radio and associated sound equipment. NOTE IEC 61 076-2-1 06 specifies connectors with a similar mating interface for connectors M1 6×0,75 with screw-locking and degree of protection IP40 or IP65/IP67 and with M1 6×0,75 screw-locking accessory. As the IEC 601 30-9 connector styles mating

This part of IEC 60099 covers metal-oxide surge arresters with external series gap (externally gapped line arresters (EGLA)) that are applied on overhead transmission and distribution lines, only to protect insulator assemblies from lightning-caused flashovers.

This part of IEC 60099 covers metal-oxide surge arresters with external series gap (externally gapped line arresters (EGLA) that are applied on overhead transmission and distribution lines,only to protect insulator assemblies from lightning-caused flashovers.

This part of IEC 60079 specifies requirements for construction, testing and marking for Ex Equipment that contains parts of the equipment with different Equipment Protection Levels (EPLs) and a separation element. This equipment is mounted across a boundary where different EPLs are required, for example between different gas hazardous areas, dust hazardous areas or gas

This part of IEC 60079: – gives instructions, principally of a technical nature, on the repair, overhaul, reclamation and modification of Ex equipment designed for use in explosive atmospheres; – applies to overhaul and repair which mitigates deficiencies identified during operation,inspection and maintenance; – does not give advice on cable and wiring systems which can

This part of IEC 60079 specifies the requirements for the design, construction, testing and marking of electrical equipment and Ex Components with type of protection increased safety “e” intended for use in explosive gas atmospheres. Electrical equipment and Ex Components of type of protection increased safety “e” are either: a) Level of Protection “eb” (EPL

This part of IEC 60079 specifies the construction and testing of intrinsically safe apparatus intended for use in an explosive atmosphere and for associated apparatus, which is intended for connection to intrinsically safe circuits which enter such atmospheres. This type of protection is applicable to electrical equipment in which the electrical circuits themselves are incapable

This part of IEC 60076 is applicable to mineral-oil-immersed transformers. It describes the effect of operation under various ambient temperatures and load conditions on transformer life. NOTE For furnace transformers, the manufacturer is consulted in view of the peculiar loading profile.

This part of IEC 60076 applies to three-phase and single-phase power transformers (including auto-transformers) with the exception of certain categories of small and special transformers such as: – single-phase transformers with rated power less than 1 kVA and three-phase transformers less than 5 kVA; – transformers, which have no windings with rated voltage higher than