Delta IED-S Series User Manual page 82

THD (Total Harmonic Distortion)
The table below shows the THDi specification when using Delta's drives (three-phase power models) to
work with AC/DC reactors.
Motor Drive
Spec.
Models without
Reactors in AC/DC Reactors
Series Spec.
5th 73.3%
7th 52.74%
11th 7.28%
13th 0.4%
THDi 91%
Note THDi may vary due to different installation conditions and environment (wires, motors).
Note: For three-phase power models, Delta provides 4% DC reactors and 3% AC reactors. Refer to the following
sections to select your applicable reactors.
Installing a DC Reactor
Models without
Built-in DC Reactors
3% Input 5% Input
AC Reactor AC Reactor
38.5% 30.8%
15.3% 9.4%
7.1% 6.13%
3.75% 3.15%
43.6% 34.33%
THDi Specification
6-9
Chapter 6 Optional Accessories | IED-S
Models with
Built-in DC Reactors
4% 3% Input
DC Reactor AC Reactor
25.5% 27.01%
18.6% 9.54%
7.14% 4.5%
0.48% 0.22%
38.2% 30.5%
5% Input
AC Reactor
25.5%
8.75%
4.2%
0.17%
28.4%