10 ms·
Some trains have mechanical contactors (https://en.wikipedia.org/wiki/Contactor https://en.wikipedia.org/wiki/Contactor), they can be very loud when switching.
by mkesper 10y ago
Some trains have mechanical contactors (https://en.wikipedia.org/wiki/Contactor https://en.wikipedia.org/wiki/Contactor), they can be very loud when switching.