>
>
>Could one just forget all this and depend on the fuses in the diagram as per
>Europa?
>
This has been discussed here before, I think.
The regulator failing, sometimes regularly, was reported by several people.
Overvoltage seems to be rare. There was a report of an overvoltage
crowbar being triggered if I am not mistaken, but I don't think there
has been a report of an unprotected overvoltage fault.
The peak-to-peak no-load voltage available at high rpm is close to 100V.
More likely is an unprotected end result in the area of 30-35V with a
45-50V peak-to-peak ripple (effective ac, bridge rectified, at high rpm)
and only when the battery has given up and the capacitor has popped. An
RG battery is supposed to boil dry and develop very high internal
resistance which keeps it from melting its case I understand. But that
may take a while using only 250W and who knows by what trajectory the
voltage develops towards the end result.
How much time there is if/when an OV fault occurs, which would depend on
the state of the battery, has not been tested as far as I know.
Bob Nuckols thinks OV protection is necessary. In the absence of
evidence to the contrary I will go with that (probably using Eric Jones'
device).
The alternative is a "loud" OV warning and quick human action.
And one should always have a "loud" low-voltage warning too ofcourse.
All still theory for me though. I better get back to my wings.
Jan de Jong
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