Synchronous motor FLA
Synchronous motor FLA
(OP)
If a synchronous motor FLA is given at 1.0 power factor, does that go up if the motor is run in the lead (-0.8 p.f.)?
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RE: Synchronous motor FLA
The maximum Amps is determined by the heating effect of the stator current on the stator.
If you wish to run the motor at other than unity power factor then you must reduce the load on the motor.
A synchronous condenser is a special synchronous motor with no load and no provision to drive a load. The current is almost purely reactive.
On the other hand;
If the motor is fully loaded and the PF is changed from unity to 0.8 (+ or -) the stator winding will be overloaded.
Do not exceed the FLA.
Bill
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"Why not the best?"
Jimmy Carter
RE: Synchronous motor FLA
RE: Synchronous motor FLA
If you specify one at 0.8 pf, say, then it will run with higher losses than the smaller one. Thi s can cost a fortune over the life of the motor, but its power factor correction abilities could
Offset this.
Current is current, the stator conductors and the cables and the switchgear do not care about power factor.