Delta Electronics AC Motor Drive VFD007S23A User Manual page 169

Appendix B Accessories|VFD-S Series
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
B-14
Application 3
≤
10m.
reactor
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
Revision August 2006, SE08, SW V2.61
motor