What are the two types of Automatic Bus Transfer (ABT) systems?

The correct answer is based on the fundamental operation and objectives of Automatic Bus Transfer (ABT) systems, which play a crucial role in electrical distribution networks. ABT systems are designed to enhance the reliability of power supply by automatically transferring load between two power sources based on specific criteria.

The two primary types of ABT systems are categorized as power seeking and normal seeking.

Power seeking systems prioritize maintaining power supply by automatically switching to an alternate source if the primary source fails or falls below a certain threshold. This capability is vital in applications where uninterrupted power is essential.

Normal seeking systems, on the other hand, focus on maintaining the operational integrity of connected loads during normal operational conditions. They typically aim to maintain the load on the preferred bus in regular circumstances, ensuring stability and proper load management.

These distinctions reflect how each type of ABT system adapts to varying operational situations to optimize performance and reliability in power supply networks. Understanding these variations is essential for technicians and engineers working with gas turbine systems to manage power distribution effectively.