Applications For Ac Reactor - Delta C2000 series User Manual

Chapter 7 Optional Accessories |C2000 Series

Applications for AC Reactor

Connected in input circuit
Application 1
When more than one AC motor drive is connected to the same mains power, and one of them is ON
during operation.
Problem: When applying power to one of the AC motor drive, the charge current of the capacitors
may cause voltage dip. The AC motor drive may be damaged when over current occurs
during operation.
Correct wiring:
Application 2
Silicon rectifier and AC motor drive are connected to the same power.
Problem: Switching spikes will be generated when the silicon rectifier switches ON/OFF. These
spikes may damage the mains circuit.
Correct wiring:
Application 3
When the power supply capacity exceeds 10 times of the inverter capacity.
Problem: 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
reactor
M1
M2
Mn
power
large-capacity
power
reactor
AC motor drive
AC motor drive
AC motor drive
silicon rectifier
reactor
AC motor drive
reactor
small-capacity
AC motor drive
7-8
motor
motor
motor
DC
motor
motor