koshari
Silver Member
- Joined
- Jul 10, 2019
- Messages
- 222
- Tractor
- Kioti ck35 , Deutz agrolux 4.80e, Deutz Agrotron 6.00 TT, Kobelco sk30ur excavator.
They are. I'm curious too.
Unless harmonics are frying the gen..., or
Unless your breaker is a MCP, or somehow only provides (magnetic) short circuit protection and not (thermal) overload protection.
BTW, those motor overloads won't protect the circuit from a short, just an overload.
generator protection generally has several functions that are all overlayed to produce a capability diagram, there will be the magnetic bond (or rotor undercurrent) that keeps the stator in sync with system freq, the stator winding heating (power/apparent power limitation )and also the rotor current limitations that need to be managed, also instantaneous short curcuit protection is addressed however in a generator scenario the detection of such shorts really only limits the damage as pretty substantual damage has occurred already if a gen winding shorts.
all of these protection functions will trip the generator cb. Larger assets will have these functions duplicated using an X Y protection scheme where two different schemes will be installed in case one has a failure.
Having said that i suspect portable type equipment just has a DOL thermal overload.