Delta Electronics AC Motor Drive VFD-E User Manual page 250

Used to improve the input power factor, to
reduce harmonics and provide protection from
AC line disturbances. (surges, switching
spikes, short interruptions, etc.). The AC line
reactor should be installed when the power
supply capacity is 500kVA or more and
exceeds 6 times the inverter capacity, or the
mains wiring distance
Correct wiring
large-capacity
power
Revision June 2008, 04EE, SW--PW V1.11/CTL V2.11
Application 3
≤
10m.
reactor
Appendix B Accessories|
Question
When the mains power capacity is too large,
line impedance will be small and the charge
current will be too high. This may damage AC
motor drive due to higher rectifier
temperature.
small-capacity
AC motor drive
motor
B-13