What does it mean?
Where is this used?
Why is important is looking at fuse / breaker / load calcs for metering cabinets?
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The rated diversity factor (RDF) is a factor specified by the manufacturer of a transformer system, which determines the ratio between the sum of the rated currents of all output circuits and the rated current of the power supply. It represents the simultaneous load capacity of the outputs of a transformer system under defined conditions, taking into account mutual thermal influences.
For example, if a transformer system has an RDF of 0.8, it means that the sum of the rated currents of all output circuits cannot exceed 80% of the rated current of the power supply when loaded simultaneously under specified conditions. On the other hand, if the RDF of a transformer system is 1, it means that the outputs can be loaded to their full rated current simultaneously without exceeding the rated current of the power supply.
Another example would be a transformer system with an RDF of 1.2, which means that the sum of the rated currents of all output circuits can be loaded up to 120% of the rated current of the power supply, simultaneously under defined conditions.
It is important to note that the manufacturer's specified RDF must be considered when designing and operating a transformer system to ensure that the outputs are loaded within their permissible limits, and the system operates reliably and safely.
The rated diversity factor (RDF) for a heat pump or wallbox can vary depending on the specific model and manufacturer. Generally speaking, the RDF for a heat pump or wallbox will be specified by the manufacturer and will be based on the rated current of the device and the number of output circuits.
For example, a heat pump may have an RDF of 1.0 if it has only one output circuit, which means that the output circuit can be loaded up to its full rated current without exceeding the rated current of the power supply. However, if the heat pump has multiple output circuits, the RDF may be lower to account for the simultaneous loading of all output circuits.
Similarly, a wallbox for electric vehicle charging may have an RDF that depends on the number of charging ports and the rated current of each port. For example, a wallbox with two charging ports each rated for 16A may have an RDF of 1.4, which means that the sum of the rated currents of both ports can be loaded up to 140% of the rated current of the power supply.
It is important to consult the manufacturer's specifications for the specific heat pump or wallbox being used to determine its rated diversity factor and ensure that it is loaded within its permissible limits.