Standards

The present technical report covers procedures for the installation and maintenance of optical fiber cables on overhead power lines. This includes. -optical ground wire (OPGE) fiber cables. - optical phase conductor (OPPC) fiber cable. - optical attached fibre cable (OPAC) . all dielectric self supporting (ADSS) optical fiber cable - Optical fiber cables are considered for single and mullti- circuit constructions in construction in common use within some countries.

This publicly available specification covers general high - level safety requirements for all types of automated urban guided transit systems with independent self-propelled trains operating on an exclusive guideway.

This part of IEC 62271 applies to all switchgear and their assemblies for alternating current of rated voltage of 72.5 kV and above for indoor and outdoor installation , including their supporting structure rigidly connected to the ground.

This part of IEC 62271 applies to alternating current disconnectors and earthing switches designed for indoor and outdoor enclosed and open terminal installations for voltages above 1000 V and for services frequencies up to and including 60 Hz.

This international standard is applicable to a.c. circuit-breakers designed for indoor or outdoor installation and for operation at frequencies of 50 Hz and 60 Hz on systems having voltage above 1 000 V.

This part of IEC 62271 mainly applies to a.c. circuit-beakers within the scope of IEC 62271 - 100 . It provides the general rules for testing a.c. circuit- breakers, for making and breaking capacities over the range of test duties described in 6 102 to 6. 111 of IEC 62271 -100. by synthetic methods..

This part of IEC 62271 applies to three-pole units for public and industrial distribution systems which are functional assemblies of switches including switch - disconnections and current limiting fuses designed so as to be capable of - breaking at the rated recovery voltage and current up to and including the rated short- circuit breaking current.

This part of IEC 62271applies to three-pole operated units for distribution systems that are functional assemblies of a circuit - switcher and current liming fuses designed so as to be cables of - breaking at the rated recovery voltage, any load or fault current up to and including the rated short- circuit breaking current . - making at the rate voltage, circuits to which the rated short -circuit breaking current applies.

This part of the IEC 62271 applies to high-voltage alternating current disconnecting circuit-breakers for operation at frequencies of 50 Hz and 60 Hz on systems having voltages of 72. 5 kV and above. This standard identifies which requirements of IEC 60694, IEC 62271-100 and IEC 62271-102 standards are applicable . It also gives the additional requirements specific to these devices.

This publicity available specification is applicable to a.c. series capacitor by-pass switches designed for outdoor installation and for operation at frequencies of 50 Hz and 60 Hz on systems having voltages above 1 000 V . It is only applicable to by-pass switches for use in three -phase systems.