Delta Electronics AC Motor Drive VFD-E User Manual
Page 250
Appendix B Accessories|
Revision June 2008, 04EE, SW--PW V1.11/CTL V2.11
B-13
Application 3
Question
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
≤
10m.
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.
Correct wiring
large-capacity
power
reactor
small-capacity
AC motor drive
motor
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