Ac Motor Chokes (Optional) - Parker AC30P Hardware Installation Manual

6-6
Associated Equipment - Power Stack

AC Motor Chokes (optional)

The maximum rate of rise of Volts (dv/dt) present at the inverter output can be as high as 10,000V/µs.
Adding an output choke between the inverter and motor reduces the dv/dt and peak voltage present at the motor which in turn reduces
the stress applied to the motor insulation.
Installations with long cable runs may also suffer from nuisance overcurrent trips. An output choke may be fitted in the inverter output to
limit parasitic capacitive current flowing to earth.
Refer to 'Appendix A: Compliance' for maximum motor cable lengths.
Where required, Parker recommend the following output choke ratings:
Frame
Notes:
1. Number of supply phases: 3.
2. Voltage rating: 480V +10% max IT/TN.
3. Required AC line choke impedance is nominally 2% of the drive rating.
4. Frequency of operation: 0 – 120Hz.
5. Choke inductance at the peak output current should be > 85% of its' initial inductance.
6. Harmonic current content: 10% @ 2kHz.
Motor
Power
Product Code
Size
kW
7x0-4K0315... 160
K
7x0-4K0380... 200
7x0-4K0440... 250
7x0-4L0530... 280
L
7x0-4L0590... 315
7x0-4M0650... 355
M
7x0-4M0700... 400
N
7x0-4N0790... 450
Inductance Rated Current
(mH/phase) (A)
hp
250 0.047 315
300 0.039 380
350 0.034 440
450 0.028 530
500 0.025 590
550 0.022 650
600 0.021 700
650 0.019 790
Peak Output
Current (A)
810
980
1180
1290
1425
1585
1750
1880
AC30 series Variable Speed Inverter