Sus­tainable elec­tri­cal installation

Sus­tainable elec­tri­cal instal­la­ti­on aims to use ener­gy and raw mate­ri­als effi­ci­ent­ly to redu­ce nega­ti­ve envi­ron­men­tal impact. The flat cable method can rea­li­ze this goal opti­mal­ly wit­hout addi­tio­nal costs and effort.

Ener­gy effi­ci­en­cy
When­ever elec­tri­ci­ty flows, ener­gy is always lost due to resi­stance in the cable. This is deter­mi­ned by the mate­ri­al, length and cross-sec­tion of the cable. It can­not be avo­ided, but it can be opti­mi­zed con­sider­a­b­ly. Ener­gy-effi­ci­ent cabling invol­ves the abso­lu­te mini­mum of cont­act points, the use of high-qua­li­ty cables and short con­nec­tion paths. 

Resour­ce effi­ci­en­cy
The pro­duc­tion of 1 meter of com­mer­ci­al­ly available cable con­su­mes approx. 7.5 kWh of ener­gy and pro­du­ces approx. 1.3 kg of green­hou­se gases per year. The­se figu­res illu­stra­te the poten­ti­al for cli­ma­te pro­tec­tion in elec­tri­cal instal­la­ti­ons. Resour­ce-effi­ci­ent cabling invol­ves redu­cing the amount of cable, or rather the amount of cop­per, to the abso­lu­te minimum.

Sus­tainable elec­tri­cal installation:
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    Avo­id unneces­sa­ry cont­act points!

    The­re is always cont­act resi­stance at cont­act points. Ener­gy is lost in the form of heat.

    The los­ses are par­ti­cu­lar­ly signi­fi­cant at main lines that sup­p­ly power. Ener­gy los­ses add up with every branch.

    Depen­ding on the instal­la­ti­on method, the­re may be a dif­fe­rent num­ber of cont­act points on the sup­p­ly line:

    Con­ven­tio­nal elec­tri­cal installation

    At least 2 cont­act points with resi­stance los­ses on the sup­p­ly line per branch.

    Pluggab­le elec­tri­cal installation

    At least 4 and often 5 cont­act points with resi­stance los­ses on the sup­p­ly line per branch.

    Flat cable installation

    No cont­act points with resi­stance los­ses on the sup­p­ly line. *

    * Bran­ches are atta­ched to the flat cable by means of insu­la­ti­on-pier­cing cont­acts wit­hout brea­king the cable. Vol­ta­ge los­ses through the cont­act point are pre­sent only at the dischar­ge point, not on the line sup­p­ly­ing the power. 

    Resi­stance los­ses per branch in con­ven­tio­nal and pluggab­le elec­tri­cal installations

    At least two cont­act points for the con­ven­tio­nal and at least four for the pluggab­le elec­tri­cal instal­la­ti­on per branch.

    Each cont­act point increa­ses the ener­gy loss on the sup­p­ly line and cumu­la­tively redu­ces ener­gy effi­ci­en­cy considerably. 

    Opti­mal cur­rent flow wit­hout addi­tio­nal resi­stance los­ses in flat cable installations

    With the flat cable system, the­re are no addi­tio­nal vol­ta­ge los­ses at the sup­p­ly cable due to cont­act points.

    This ensu­res opti­mum cur­rent flow wit­hout addi­tio­nal resi­stance losses.

    Avo­id excess lengths.

    Pluggab­le elec­tri­cal installation

    Excess lengths may occur due to stan­dar­di­zed cable lengths, espe­ci­al­ly in pluggab­le elec­tri­cal instal­la­ti­ons. As a rule, they make up around 20% of the cable volu­me.

    Elec­tri­cal instal­la­ti­on with flat cables

    Sin­ce, when using flat cables, the junc­tion box can be atta­ched any­whe­re on the cable, the­re are no excess lengths.

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    With the flat cable system in com­bi­na­ti­on with buil­ding auto­ma­ti­on, up to 80% amount of cable can be saved com­pared to con­ven­tio­nal elec­tri­cal instal­la­ti­on , as ele­ments inclu­ding fuses can be pla­ced direct­ly on the flat cable and a cen­tral con­trol cabi­net is no lon­ger required.

    Buil­ding auto­ma­ti­on also helps to redu­ce the eco­lo­gi­cal foot­print of buil­dings, increa­se the qua­li­ty of life of users and achie­ve cost savings in the long term. This is par­ti­cu­lar­ly important as buil­dings account for a signi­fi­cant share of glo­bal ener­gy con­sump­ti­on and CO2 emissions.

    Ener­gy is too valuable to be wasted

    By choo­sing an ener­gy-effi­ci­ent instal­la­ti­on method with flat cables, unneces­sa­ry ener­gy los­ses can be avo­ided. In total, this could save the equi­va­lent of the out­put of an enti­re power plant every year in Switzerland. 

    Every year, around 100 mil­li­on kilo­me­ters of cable are laid in Switz­er­land. Ten per­cent of this could be rea­li­zed with flat cable. Based on an avera­ge saving of 40% per cable, around 5200 tons of CO2 would be saved in Switzerland.

    This cor­re­sponds to the CO2 emis­si­ons of a mid-ran­ge car cir­cum­na­vi­ga­ting the Earth 1000 times or the annu­al car­bon seque­stra­ti­on of half a mil­li­on trees.

    Fur­ther information:

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