Yaskawa L1000E AC Drive Technical Manual for CIMR-LE Models for Elevator Applications - Manual (Page 351)

8.5 Installing Peripheral Devices
YASKAWA ELECTRIC SIEP YAIL1E 01A YASKAWA AC Drive L1000E Technical Manual 351
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8
◆ Connecting an AC Reactor or a DC Link Choke
■ 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 reactor or a DC link choke to the input side of the drive. Installing an AC reactor
or a DC link choke will also help improve the power factor.
Install an AC reactor or a DC link choke 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 8.19 .
Note: A DC link choke is built in to the drive models 2A0106 to 2A0432 and 4A0056 to 4A0260.
Figure 8.17
Figure 8.19 Installing an AC Reactor or DC Link Choke
■ Connecting an AC Reactor
Figure 8.18
Figure 8.20 Connecting an AC Reactor
A – Power supply C – AC reactor
B – MCCB D – Drive
4000
600
0
60 400
Drive Capacity (kVA)
Power Supply
Capacity (kVA)
Power supply harmonics
AC reactor or DC link choke
required
AC reactor or DC link
choke unnecessary
YEA_T
Monly
B A
C D
R/L1 U
V
W
X
Y
Z
S/L2
T/L3
C o m m
on_
TMonly