I've been playing around with this nice panel and have encountered a few issues.
First the batterylife is not right. It should according to regulations be at least 30 minutes and a friend of mine who used to be a BAe test pilot says it is more likely to be around 50 minutes of battery time at the emergency power level.
Also when you're at the emergency power level and you put the start master to on, you will get the essential dc bus back.