Associated Equipment
5-2
AC30V series Variable Speed Drive
AC Motor Chokes
The maximum rate of rise of Volts (dv/dt) present on the motor terminals of the drive, can be as high as 10,000V/
s. This can be reduced
by adding a motor choke in series with the motor.
Installations with long cable runs may suffer from nuisance overcurrent trips, refer to Appendix C Compliance - Cabling Requirements for
maximum cable lengths. An output choke may be fitted in the drive output to limit parasitic capacitive current to earth. Screened cable
has a higher parasitic capacitance to earth and may cause problems in shorter runs. Contact Parker for recommended choke values.
Motor Power (kW)
Choke Inductance
RMS Current Rating
Parker Part No.
0.75
1.1
1.5
2mH
7.5A
CO055931
2.2
4.0
5.5
0.9mH
22A
CO057283
7.5
11
0.45mH
33A
CO057284
15
18
0.3mH
44A
CO057285
22
50µH
70A
CO055193
30
37
50µH
99A
CO055253
45
50µH
99A
CO055253
55
50µH
243A
CO057960
75
50µH
360A
CO387886
90
Contact Parker SSD for further information
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