Chapter 7 Optional AccessoriesC2000
7-10
7-4 AC / DC Reactor
AC Input Reactor
Installing an AC reactor on the input side of an AC motor drive can increase line impedance, improve
the power factor, reduce input current, and reduce interference generated from the motor drive. It also
reduces momentary voltage surges or abnormal current spikes. For example, when the main power
capacity is higher than 500 kVA, or when using a switching capacitor bank, momentary voltage and current
spikes may damage the AC motor drive’s internal circuit. An AC reactor on the input side of the AC motor
drive protects it by suppressing surges.
Installation
Install an AC input reactor in series with the main power to the three input phases R S T as shown
below:
Wiring of AC input reactor
Following table shows the standard AC reactors specification of Delta C2000
200V~230V/ 50~60Hz
Model HP
Rated Current
(Arms)
Saturation current
(Arms)
3%
impedance
(mH)
5%
impedance
(mH)
Built-in
DC reactor
Input AC reactor
Delta part #
VFD007C23A
1 5 8.64 2.536 4.227 No DR005A0254
VFD015C23A
2 8 12.78 1.585 2.642 No DR008A0159
VFD022C23A
3 11 18 1.152 1.922 No DR011A0115
VFD037C23A
5 17 28.8 0.746 1.243 No DR017AP746
VFD055C23A
7.5 25 43.2 0.507 0.845 No DR025AP507
VFD075C23A
10 33 55.8 0.32 0.534 No DR033AP320
VFD110C23A
15 49 84.6 0.216 0.359 No DR049AP215
VFD150C23A
20 65 111.6 0.163 0.271 No DR065AP163
VFD185C23A
25 75 127.8 0.169 0.282 No DR075AP170
VFD220C23A
30 90 154.8 0.141 0.235 No DR090AP141
VFD300C23A
40 120 205.2 0.106 0.176 Yes DR146AP087
VFD370C23A
50 146 250.2 0.087 0.145 Yes DR146AP087
VFD450C23A
60 180 307.8 0.070 0.117 Yes DR180AP070
VFD550C23A
75 215 367.2 0.059 0.098 Yes DR215AP059
VFD750C23A
100 255 435.6 0.049 0.083 Yes DR276AP049
VFD900C23A
125 346 592.2 0.037 0.061 Yes DR349AP037
Figure 7-6
Table 7-15
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