motor unbalance current vs load
motor unbalance current vs load
(OP)
Let's say a motor is exposed to a small voltage unbalance of 1% or less. How does the current unbalance vary as load is increased from no-load to full-load?
Constant percentage of total current? Or decreasing percentage of current?
I have seen a few things to make me suspect that the "percentage-imbalance" decreases as load decreases. Interested if others believe the same. Maybe it depends upon the source of the unbalance (unbalanced voltage or unbalanced motor windings)?
Constant percentage of total current? Or decreasing percentage of current?
I have seen a few things to make me suspect that the "percentage-imbalance" decreases as load decreases. Interested if others believe the same. Maybe it depends upon the source of the unbalance (unbalanced voltage or unbalanced motor windings)?





RE: motor unbalance current vs load
..I have seen a few things to make me suspect that the "percentage-imbalance" decreases as load increases...
RE: motor unbalance current vs load
RE: motor unbalance current vs load
http://www.moeller.co.uk/ht_motor_protection.htm
for a new protection against the current imbalance. Check with the manufacturer regarding the voltage imbalance versus current imbalance dependences with the increasing load.
RE: motor unbalance current vs load
RE: motor unbalance current vs load
RE: motor unbalance current vs load
I would say that current umbalances would decrease with an
increase in load.This is true for some motor designs, that
have an assymetrical magnectic field.They have large current umbalances when idling but fairly well balanced phases when fully loaded.As for the 1% voltage umbalance
it is indeed great,but the old rule still applies.A small voltage unbalance may cause a ten fold current umbalance .
"Remarks to a previous post dealing with current unbalances".It is true Pete.I read it somewhere and so did you.
GusD
RE: motor unbalance current vs load
RE: motor unbalance current vs load