Patent ID: 7595568

Claim:
An ignition system for a gas turbine engine, comprising: first and second ignition units; first and second igniters; first and second power supply busses for power (P 1 , P 2 ); first and second control units for activation of the power supplies: wherein the first and second ignition units are connected respectively, to the first and second igniters, the first and second power supply busses for power (P 1 , P 2 ), and the first and second control units each power supply bus comprising a standard bus for power P 1 and an emergency bus for power P 2 and a relay, which in normal operation of the first power supply bus is electrically connected to the standard bus for power P 1 and in normal operation of the second power supply bus is electrically connected to the emergency bus for power P 2 , and, wherein, in the event of a power supply failure, the respective relay makes an automatic switchover to the respective other power supply of the corresponding power supply bus.