GE B30 UR Series Instruction Manual page 15

1 GETTING STARTED 1.2 UR OVERVIEW
neous overcurrent, current differential, undervoltage, overvoltage, underfrequency, and distance. These objects represent
completely self-contained software modules. The same object-class concept can be used for metering, input/output control, 1
software interface, communications, or any functional entity in the system.
Employing OOD/OOP in the software architecture of the B30 achieves the same features as the hardware architecture:
modularity, scalability, and flexibility. The application software for any UR-series device (for example, feeder protection,
transformer protection, distance protection) is constructed by combining objects from the various functional classes. This
results in a common interface across the UR series.
GE Multilin B30 Bus Differential System 1-5