[PUP] Arild and the design build "thing"

[Arild Jensen]

> -----Original Message-----
> From:Bob Frenier

> How "huge" are those alternators and can you disengage them when
> not needed?
> Also, how does the heat of the engine room affect them?
> Bob Frenier


Hi Bob,
These series 98 large frame alternators are the same as what USCG uses on
their patrol boats.
They can be dis-engaged by the simple expedient of turning off the IGN
positive feed to the regulator.
with no field current the armature simply free-wheels.

AS for the heat in the engine room; it isn't any different than what we get
in the patrol boat engine compartment with twin Detroit diesels putting out
475 HP each. These alternators will be running derated to 80% from max
output. This ensures they stay cooler. Balmar can provide derating curves
for elevated temperatures.

BTW this is a proven application with about 10 years use in USCG patrol boat
applications.
This isn't some half baked spur of the moment cobble up.

best regards

Arild Jensen