What initiation method is NOT mentioned for high voltage circuit breakers?

The initiation method that is not mentioned for high voltage circuit breakers is timers. Timers are typically used in various electrical applications for scheduling and time-based control, but they are not a standard method for the initial operation of high voltage circuit breakers.

In contrast, remote supervisory controls allow for the operation of circuit breakers from a distance, which is vital for safety and efficiency in high voltage environments. Manual operation of a switch provides a direct method of initiating the circuit breaker, ensuring immediate control when needed. Auto sensing by relays is critical as it allows the circuit breakers to react to fault conditions automatically, providing protection without human intervention. Therefore, while the other methods directly relate to the operation of high voltage circuit breakers, timers do not fit into the context of initiation for these devices.