Delta CFP2000 Series - Page 103

Chapter 7 Optional Accessories CFP2000
7-18
AC Output Reactor
When using drives in long wiring output application, ground fault (GFF), over-current (oc) and motor
over-voltage (ov) often occur. GFF and oc cause errors due to the drive’s self-protective mechanism;
over-voltage damages motor insulation.
The excessive length of the output wires makes the grounded stray capacitance too large, increase
the three-phase output common mode current, and the reflected wave of the long wires makes the motor
dv / dt and the motor terminal voltage too high. Thus, installing a reactor on the drive’s output side can
increase the high-frequency impedance to reduce the dv / dt and terminal voltage to protect the motor.
Installation
Install an AC output reactor in series between the three output phases U V W and the motor, as shown in
the figure below:
Wiring an AC output reactor
Specifications of AC output reactors (standard item)
Following tables show the standard AC output reactors specification of Delta CFP2000:
380V–460V / 50–60 Hz
Model kW HP
Rated Amps of
AC Reactor
(Arms)
Max. continuous
Amps (Arms)
3%
Impedance
(mH)
5%
Impedance
(mH)
Built-in
DC
reactor
3% Input AC reactor
Delta part #
Normal
Duty
Light
Duty
Normal
Duty
Light
Duty
Normal
Duty
Light
Duty
Normal
Duty
Light
Duty
Normal Duty Light Duty
VFD007FP4EA-41/-52
/ VFD007FP4EA-52S
0.75 1
1.7 3 2.72 3.6 14.918 8.102 24.863 13.503 Yes DR003L0810* DR003L0810
VFD015FP4EA-41/-52
/ VFD015FP4EA-52S
1.5 2
3 4.2 4.8 5.04 8.102 6.077 13.503 10.128 Yes DR003L0810 DR004L0607
VFD022FP4EA-41/-52
/ VFD022FP4EA-52S
2.2 3
4 5.5 6.4 6.6 6.077 4.050 10.128 6.75 Yes DR004L0607 DR006L0405
VFD037FP4EA-41/-52
/ VFD037FP4EA-52S
3.7 5
6 8.5 9.6 10.2 4.050 2.700 6.75 4.5 Yes DR006L0405 DR009L0270
VFD040FP4EA-41/-52
/ VFD040FP4EA-52S
4 5
9 10.5 14.4 12.6 2.700 2.315 4.5 3.858 Yes DR009L0270 DR010L0231
VFD055FP4EA-41/-52
/ VFD055FP4EA-52S
5.5 7.5
10.5 13 16.8 15.6 2.315 2.025 3.858 3.375 Yes DR010L0231 DR012L0202
VFD075FP4EA-41/-52
/ VFD075FP4EA-52S
7.5 10
12 18 19.2 21.6 2.025 1.35 3.375 2.25 Yes DR012L0202 DR018L0117
VFD110FP4EA-41/-52
/ VFD110FP4EA-52S
11 15
18 24 28.8 28.8 1.35 1.01 2.25 1.683 Yes DR018L0117 DR024LP881
VFD150FP4EA-41/-52
/ VFD150FP4EA-52S
15 20
24 32 38.4 38.4 1.01 0.76 1.683 1.267 Yes DR024LP881 DR032LP660
VFD185FP4EA-41/-52
/ VFD185FP4EA-52S
18.5 25
32 38 51.2 45.6 0.76 0.639 1.267 1.065 Yes DR032LP660 DR038LP639
Figure 7-20