Omron RX2 Series User Manual

2 - 51
2 Design
High-function General-purpose Inverter RX2 Series User’s Manual
2-3 Wiring
2
2-3-4 Wiring for Main Circuit Terminals
 Wiring Method
With DC reactor
With DC reactor and AC reactor
 Effect of Reactors
Through the use of the DC/AC reactor, the rate of harmonic current occurrences can be reduced as
shown in the table of typical examples below.
 Guideline for Reactor Selection
When implementing measures against harmonics, first install a DC reactor and evaluate its effect.
Then, if further reduction is required, add an AC reactor.
To implement harmonic countermeasures in consideration of the power supply environment, first
install an AC reactor and evaluate its effect. Then, if further reduction is required, add a DC reactor.
If you have multiple inverters and use the AC reactor, use one AC reactor for each inverter. Using
only one AC reactor for more than one inverter does not provide sufficient reduction.
Measure against
harmonics
Harmonic current occurrence rate [%]
5th 7th 11th 13th 17th 19th 23rd 25th
None (Inverter only) 65 41 8.5 7.7 4.3 3.1 2.6 1.8
With AC reactor 38 14.5 7.4 3.4 3.2 1.9 1.7 1.3
With DC reactor 30 13 8.4 5 4.7 3.2 3.0 2.2
With DC and AC Reactors 28 9.1 7.2 4.1 3.2 2.4 1.6 1.4
PPD
RB
N
P
PD
RB
N
Short bar
DC reactor
(option)
Short bar
M
PD
P
R/L1
S/L2
T/L3
U/T1
V/T2
W/T3
MC
MCCB
DC reactor
(option)
AC reactor
(option)
3-phase 200 VAC
3-phase 400 VAC
Power supply

Omron RX2 Series Specifications

General

Brand	Omron
Model	RX2 Series
Category	Inverter
Language	English