www.se.com51Simplified design guideDesign of a power distribution line in Canalis busbar trunkingCABDEF8 Verification of voltage drop9 Protection against short circuitsThe voltage drop between the source and any point of use must not exceed the values in the following table:The line-to-line voltage drop, during operation, is indicated in volts per 100 metre per ampere (V/100 m/A), at 50 Hz, with distributed loads on the Canalis line.In the case of a load concentrated at the end of a line, the value of the voltage drop is twice the indicated value.This table applies to the three-phase network. To obtain the single-phase voltagedrop, the three-phase voltage drop shown above is divided by 0.866.Check that the calculated voltage drop is < to the maximum voltage drop wanted.For standard installations with installed capacities of up to 630 kVA, by using the Schneider Electric product offering, the low-voltage electrical switchboard, circuit breakers and even Canalis trunking, your installation can be sized to cope with all levels of short circuits encountered.To verify the correct configuration of your installation (Icc up to 150 kA), refer to the coordination tables page 48.We also invite you to discover Ecodial, our design and computation software dedicated to low-voltage electrical networks (choice of circuit breaker type, calculation of breaking capacity, short-circuit currents, voltage drops, selection of cables, etc.). Ask your Schneider Electric representative about it.Table 2Installation supplied by a distribution networkLightingOther applicationLV public system3%5%High voltage6%8%Table 3For a power factor φ of KN40 A63 A100 A160 A1V/100 m/A0.1680.1780.1910.0680.9V/100 m/A0.1610.1690.1810.0710.8V/100 m/A0.1470.1550.1650.0670.7V/100 m/A0.1330.1400.1490.063DEBU020EN
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