Short Circuit Voltage Drop Example Using BricsCAD InPower Ver. 0.97.46 and Schneider Ecodial

Cnut

Short Circuit and
Voltage Drop Example
Using BricsCAD InPower Ver. 0.97.46
and Schneider Ecodial
Jan 2022

BricsCAD InPower and Schneider Electric software Ecodial are compared. The one line diagram is generated using BricsCAD and InPower. See Figure 1. The Ecodial web site wiki is used for the comparison.

https://www.electrical-installation.org/enwiki/Worked_example_of_cable_calculation

Figure 1. BricsCAD InPower One Line





Figure 2. Ecodial One Line

Three Phase Bolted Fault Short Circuit Reports


Table 1 shows BricsCAD Inpower Short Circuit Report

BUS-4-Cable-C1 21.7 KA
BUS-5-Cable-C3 18.7KA
BUS-7-Cable-C7 17.4KA
Table 1.

Table 2 Figure G71 shows Ecodial Short Circuit Report

Table 2.

Voltage Drop Comparison

Table 3 shows the InPower Voltage Report

BUS-4-Cable-C1 99.9% 0.1% drop
BUS-5-Cable-C3 99.4% 0.5% drop
BUS-7-Cable-C7 99.3% 0.1% drop
Table 3.

Table 4 Figure G72 shows the Ecodial Voltage Report

Table 4.

The differences in the table values are due to cable and transformer model impedances being slightly different.

It's interesting to see the difference between tools.