See Also
A Subnet is a group of buses connected through switching devices or other very low-impedance branches devices regardless of their open or closed status. Subnets are bounded by transmission line and transformer terminals. Subnets on a system hence do not depend on the status of breakers, but only on the presence of devices. Subnets do not change unless equipment is added or removed from the physical model.
A Subnet can contain one or more Superbuses.
A Superbus belongs to only one subnet.
Subnets and Superbuses are set automatically when the case is read from the binary or aux file.
The list of subnets and the details of subnet records can be seen on the Model Explorer under Solution Details > Subnets.
The example below shows a subnet that has four nodes. The shown breakers statuses results in two superbuses. If either breaker is closed, the two superbuses will merge.
