8.5 Installing Peripheral Devices
♦ Connecting an AC or DC Reactor
■ Reactor Placement
When connecting to a power supply transformer with greater than 600 kVA capacity, or when switching a phase advance
capacitor, large peak current can flow through the input power supply circuit and damage converter components in the
drive.
As a preventive measure, install an AC or DC reactor to the input side of the drive. Installing an AC or DC reactor will
also help improve the power factor.
Install an AC or DC reactor if a DC drive or another type of thyristor converter is running from the same power system,
regardless of the power supply conditions shown in
Figure 8.18.
Note: A DC reactor is built in to the drive models 2A0085 to 2A0415 and 4A0045 to 4A0216.
D r i v e C a p a c i t y ( k V A )
F ig u r e 8 .1 8 In s ta llin g a R e a c to r
■ Connecting an AC Reactor
C
D
A - P o w e r s u p p l y
C - A C r e a c t o r
B - M CCB
D - D rive
F ig u r e 8 .1 9 C o n n e c ti n g a n A C R e a c to r
■ Connecting a DC Reactor
A DC reactor can be installed to drive models CIMR-LC2A0018 to 2A0075 and 4A0009 to 4A0039. When installing a
DC reactor, remove the jumper between ter1 and +2 (terminals are jumpered for shipment). The jumper must be
installed if not using a DC reactor. Refer to
Figure 8.20
for an example o f DC reactor wiring.
C
A - P o w e r s u p p l y
C - D rive
B - M CCB
D - DC R e a c to r
F ig u r e 8 .2 0 C o n n e c tin g a DC R e a c to r
308
YASKAWA ELECTRIC SIEP C710616 33D YASKAWA AC Drive L1000A Technical Manual
