Appendix B Accessories|VFD-VL
B-13
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.
Correct wiring
DC
power
reactor
reactor
AC motor drive
motor
silicon rectifier
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.).
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 power capacity is too large, line
impedance will be small and the charge
current will be too large. That may damage
AC motor drive due to higher rectifier
temperature.
Correct wiring
large-capacity
power
reactor
small-capacity
AC motor drive
motor
Call 1(800)985-6929 for Sales
Call 1(800)985-6929 for Sales
To Next Page
Loading...
