The standard formerly known as (now integrated into IEC 60949 ) provides the calculation methods for determining the thermally permissible short-circuit currents for electrical cables. It is primarily used to ensure that a cable’s conductor, screen, or sheath can withstand the rapid heat rise during a fault without exceeding its temperature limits. Core Content of IEC 60949
In the early 1980s, high-voltage direct current (HVDC) transmission was becoming a critical technology for moving electricity across long distances and between unsynchronized AC grids. Engineers from different countries kept running into the same problem: they used different symbols, terms, and naming conventions for the same components — thyristor valves, smoothing reactors, converters, and harmonics.
To adjust for real-world heat loss, the final permissible short-circuit current ( ) is modified by a non-adiabatic factor, denoted as
The standard formerly known as (now integrated into IEC 60949 ) provides the calculation methods for determining the thermally permissible short-circuit currents for electrical cables. It is primarily used to ensure that a cable’s conductor, screen, or sheath can withstand the rapid heat rise during a fault without exceeding its temperature limits. Core Content of IEC 60949
In the early 1980s, high-voltage direct current (HVDC) transmission was becoming a critical technology for moving electricity across long distances and between unsynchronized AC grids. Engineers from different countries kept running into the same problem: they used different symbols, terms, and naming conventions for the same components — thyristor valves, smoothing reactors, converters, and harmonics.
To adjust for real-world heat loss, the final permissible short-circuit current ( ) is modified by a non-adiabatic factor, denoted as
