In the power system, the selection of high-voltage cables is crucial, and the core basis is to meet the thermal stability requirements of the cable. This means that when selecting a cable cross-section, exhaustive calculations must be carried out to ensure that the cable will remain stable in the event of a thermal shock caused by a short-circuit current.
To calculate the thermal stability of a cable, it is first necessary to specify the value of the short-circuit current. This current value should be calculated based on the normal wiring pattern where the maximum short-circuit current is likely to occur. This is because, under normal operating conditions, cables are subject to various factors, such as changes in temperature, voltage, and current. In order to ensure the safe operation of the cable, we must fully consider these factors and calculate them according to the worst-case scenario. Let's talk about the thermal stability of short-circuit current calibration cables in power supply and distribution design.
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