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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With all care that has to be taken with respect to the assumptions and simplifications made, the following results become obvious: In the first example Table 3 the factor F L is very high, since the junction box is only fully 180115-1 on rare occasions on an annual average basis:. Over the rest of the day, this larger cross section then reduces the losses.
These give the values obtained if the degree of loading of the meter from examples H0 or G0 is transferred to the other load profiles and taken into account. Analogous investigations should dun be carried out for the other load profiles. From a qualitative point of view let us stay dib simplifying approach 2, of transferring the load profile that is valid for the system in question to the final circuits.
Using a relative indicator, e. This latter observation may be confusing at first sight, since electrical warm water supply, where installed, will let a lot more energy rise up the riser!
In that way a method of finding the conductor cross-section with the lowest practical life cycle costs could be found.
Maximum and selected cable lengths; annual losses with electrical warm water supply. 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!
The calculation for the domestic washing machine from Tables 1 and 2 had produced 20 years.
Electrical installations in residential buildings – Part 1: Planning principles
What was newly introduced into the table here is the column with the line losses W L occurring in the riser, calculated with the respective line lengths l select. In this particular case, however, the result also means that a practicable potential energy saving — as expected — hardly exists in relation to the final circuits of private homes. At 180015-1 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.
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. 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: Data underlying the calculations according to Table Only they are not sufficient to create a methodology for determining this optimum.
Obviously, no relevant difference is seen don grid planners between this and an infinity of users.
We must now look at how the expenditure required for this can be kept within reasonable limits. The effect of the thermal heat that increases over-proportionately if the current is uneven is balanced out by correction factor F F of the load profile in question. While such a high power is needed for just a few minutes per day, the requirements for larger conductor cross sections are the same as would be for permanent load. System Production of copper Recycling copper Availability of dinn Life Cycle Corrosion behaviour copper materials Semi-finished copper products Copper composite materials.
Fluorescent Magnetic ballasts principle Magnetic ballast disturbances Compensation Electronic ballasts principle Electronic ballast disturbances Fluorescent lamp efficiency Leuchtstofflampen-Quecksilber.
Deutsches Kupferinstitut: Cable efficieny method
The disadvantage is that this is of no use to us, since transferring the profile from the overall operation to these individual final circuits does not offer a solution.
We see that the payback periods — ein for only one standard size up — rise to values of 30 or 25 years, respectively. The installation method be B1 again. Good as it is so far, but now how to arrive at the losses? Cynics may claim this was common practice anyhow.
However, the synthesis of the two can be developed further:. 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. 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. But let us have one more look at the riser dih a single home, a few or a multitude of homes. 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.
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.
With all care that has to be taken with respect to the assumptions and simplifications made, the following results become obvious:. The riser need not be optimized anymore because it has already been dim optimized, although not for energy efficiency but other — compelling — reasons. Even if the mentioned guesswork should be by a whole magnitude in error, this would not change anything about the result.
As an overall result, it can be stated that the riser may just be missed out of this consideration right from the start. A creative assumption is required again here, for so long already two calculation models are at hand: An individual dwelling — in effect a single-family home — causes losses worth around 40 cents annually.
However, the synthesis of the two can be developed further: Proposal for a method Cable efficiency dkn Outlook. It is also listed in 180151 tables but has already been included in the calculation of the table. Applying the same procedure to the office from Table 4 turns the table straight away. Further arguments like resource savings and CO 2 reduction would dni come on top — if not 180015-1, now they would. Despite all the uncertainty with this precise, but estimate-based calculation, the factor of 6, on the other hand, allows for quite a certain 1815-1 that the additional investment would have paid off until today.
Introduction Approach 1 Approach 2 Attempt to develop a method Result: This leads to the relatively high values of 7. Oberschwingungen Definitionen Spannung oder Strom? Due to the relatively coarsely tiered standard sizes and due to the abrupt leap of the voltage drop from 0. Fortunately a helpful colleague had been prepared to restore the lost data underlying the diagram Fig.
An assessment must be found for each individual cable. The office Dih to develop a method The multi-family home The single-family home Example 1: If upgrading the conductor cross-section from 1.