ABSTRACT
Modeling lumped R-L-C impedance loads on one or more segments of a wire is accomplished using the LD command. Series and parallel circuits can be generated in addition to a finite wire conductivity. More often than not, the LD command is used by a specific setting to add a series impedance to a wire such as might be found in the inductance of a lead or the loss resistance of a wire. It is also commonly used to create an open circuit that is shunted by a capacitor such as might exist at the base insulator of the tower. The floating-point numbers in the LD command define the value of the R-L-C components in that order. When an inductance or capacity is entered on an LD command, the resulting reactance is automatically scaled as frequency changes. Network commands may be used in groups to specify several networks on a structure.
