DIN 18015-1 PDF
DIN Electrical installations in residential buildings – Part 1: Planning principles. standard by Deutsches Institut Fur Normung E.V. DIN DE. Elektrische Anlagen in Wohngebäuden – Teil 1: Planungsgrundlagen (Foreign Standard). Diese Norm gilt für die Planung von. Draft standard DIN – Draft. Electrical installations in residential buildings – Part 1: Planning principles. German title: Elektrische.
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Applying the same procedure to the office from Table 4 turns the table straight away.
Electrical installations in residential buildings – Part 1: Planning principles
According to Approach 1 Table 3 or Table 4, respectivelythis factor corresponds to the relevant geometric average between the smallest possible and the greatest possible current. At least this is what things look like inside an apartment, independently on whether this apartment is located in a single-family building or in a condominium.
This being so, the estimate is quite likely to be still too high, since all risers have been calculated as being loaded with the entire current drawn by the building.
Obviously, no relevant difference is seen by grid planners between this and an infinity of users. In fact, every storey takes away its part of the load, and the last section is loaded only more with the current of two flats. From a qualitative point of view let us stay with simplifying approach 2, of transferring the load profile that is valid for the system in question to the final circuits.
Proposal for a method Cable efficiency helpers Outlook. The office Attempt to develop a method The multi-family home The single-family home Example 1: If upgrading the conductor cross-section from 1. Oberschwingungen Definitionen Spannung oder Strom?
Data underlying the calculations according to Table A creative assumption is required again here, for so long already two calculation models are at hand: However, the synthesis of the two can be developed further:.
This result is particularly astonishing if you consider that the 1. Analogous investigations dn now be carried out for the other load profiles. The installation method be B1 again.
As an overall result, it can be stated that the riser may just be missed out of this consideration right from the start.
An assessment must be found for each individual cable.
We must now look at how the expenditure required for this can be kept within reasonable limits. Further arguments like resource savings and CO 2 reduction would still come on top — if not then, now they would. Only they are not sufficient to create a methodology for determining this optimum. What was newly introduced into the table here is the column with the line losses Dln L occurring in the riser, calculated with the respective line lengths l select.
Deutsches Kupferinstitut: Cable efficieny method
Since the di has been in operation for 33 years already, an additional initial investment for conductors upsized to 2. Maximum and selected cable lengths; annual losses with electrical warm water supply.
In the first example Table 3 the factor F L is very high, since the junction box is only fully utilised on rare occasions on an annual average basis:. So one ought to calculate with half the load as a mean or, alternatively, with half the real length, neither of which was done here. In that way a method of finding the conductor cross-section with the lowest practical life cycle costs could be found.
In other words, this is the root from the quotient of the least uniform by the most uniform load distribution across the year and across the circuits that is at all possible.
Of course, the same load profile as for the one and only flat in the first line of the table was also applied to the respective riser.
Special contract customers Anomalies, characteristics, further action Example 2: Hence, the force to design the conductors to the peak of the occurring load is not really a cost driver but rather a piggy bank, viewed across the lifespan, adding erection and loss costs!
This latter observation may be confusing at first sight, since electrical warm water supply, where installed, will let a lot more energy rise up idn riser! However, the synthesis of the two can be developed further: The calculation for the domestic washing machine from Tables 1 and 2 had produced 20 years.