uclpcserver: align electricalConnectionCharacteristicListData data

[DAMEK86]

in Limitation of Power Consumption v1.0.0 section3.2.2.2.5.1 the following data is required

• powerConsumptionNominalMax
• contractualConsumptionNominalMax

[DerAndereAndi]

No, please check the spec again. One is required for consumable devices, the other for the CEM. See chapter 2.2 page 14

[DAMEK86]

as far as i can see in the docs on page 57 this section is just for server data resources

[DerAndereAndi]

Yes, that is what should generally be available when implementing the server feature. BUT a CEM does NOT have a nominal max power consumption and a consumable system does NOT have a contractual max power consumption.

See page 14 chapter 2.2 lines 400-403:

The CS SHOULD inform the Energy Guard about its nominal maximum values (either the Power
Consumption Nominal Max ([LPC-041]) in case the CS is not an energy manager, or the Contractual
Consumption Nominal Max ([LPC-042]) if the CS is an energy manager). The CS SHALL NOT consume
more than the according nominal maximum value.

I fell in the same trap first when blindly implementing the data structures, but when implementing the API I asked myself that question: How can a HEMS have a nominal max. It can't. Then re-read the spec and found the mentioned reference.