Delta VFD055B43A

Appendix B Accessories_VFD-B Series
Revision 10/2005, BE13, SW V4.08 B-33
B.6.3 Applications for AC Reactor
Connected in input circuit
Application 1 Question
When more than one AC motor drive is connected
to the same power, one of them is ON during
operation.
When applying to one of the AC motor drive,
the charge current of capacity may cause voltage
ripple. The AC motor drive may damage when over
current occurs during operation.
Correct wiring
M1
M2
Mn
reactor
AC motor drive
AC motor drive
AC motor drive
motor
motor
motor
Application 2 Question
Silicon rectifier and AC motor drive is connected to
the same power.
Surges will be generated at the instant of silicon
rectifier switching on/off. These surges may
damage the mains circuit.