HD 604 is identical to DIN VDE 0276-604.
This section applies to the capacity under both agreed but also deviating conditions, provided that three cores are loaded in three-phase operation or only one single-core cable is loaded in DC operation.
The rated currents listed in the tables are recommended values under normal operating conditions.
|maximum admissible operating temperature
|maximum admissible temperature in case of short circuit
Concentric conductors are grounded on both ends.
Operating frequency 50 Hz.
The tabulated loading capacities are based on various conditions such as
– operating mode,
– laying conditions,
– environmental conditions.
In the event of deviating operating conditions, the loading capacities are to be multiplied by suitable conversion factors, which are based on the same calculation principles and operating conditions as the given values.