Delta HES Series User Manual page 147

Application 3
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
Question
When power capacity is too large, line impedance will be small and the charge current will be too
large. That may damage Hybrid Servo Controller due to higher rectifier temperature.
Correct wiring
Large-capacity
Power Supply
Appendix B Optional Accessories|HES Series
10m.
≤
Low-capacity
Hybrid Servo Controller
Reactor
B-5
Mot or