Delta VFD-B User Manual page 223

Appendix B Accessories|VFD-B Series
Correct wiring
power
Used to improve the input power factor, to
reduce harmonics and provide protection from
AC line disturbances. (surges, switching
spikes, short interruptions, etc.). 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
B-36
Application 3
≤
10m.
power
silicon rectifier
reactor
AC motor drive
reactor
When power capacity is too large, line
impedance will be small and the charge
current will be too large. That may damage
AC motor drive due to higher rectifier
temperature.
small-capacity
AC motor drive
reactor
Revision July 2008, BE16, SW V4.08 & V5.00
DC
motor
Question
motor