Humble,
I have recently commissioned a 4.3 MVAR\Phase Ungrounded Wye PF Bank at a Clients Shredding Operation (4000 HP Wire Wound Rotor w\Liquid Rheostat). It is Tuned to the 9.8th Harmonic.
At Idle the Bank leads a bit, and it is .94-.97 under load.
The serving Utility does not care about the...