Ac Line Choke - Parker AC890 Product Manual

AC Line Choke

IMPORTANT
The drive must be used with an AC Line Choke, however, where a drive is individually supplied from a
dedicated transformer with the required impedance, the AC Line Choke is not required.
Note Refer to Appendix E: "Technical Specifications" for further information.
Failure to provide the correct 3% line impedance will severely reduce the drives lifetime and could result in
Rating Guidelines for AC Line Chokes
Parker can supply the line chokes listed in Appendix E: "Technical Specifications" - Line Chokes.
If you wish to source your own line choke refer to the individual Electrical Rating tables in Appendix E for
the relevant rms line currents. For constant torque applications refer to the AC Line Choke table for the
peak instantaneous line current under overload conditions.
Note that the choke thermal design must accommodate the harmonic currents present in the supply
waveform. These will vary according to supply impedance, but as a general guideline, the values used in
the diagram below can be used.
1. Number of supply phases:
2. Frequency of operation:
3. Choke inductance during overload should be a minimum of 90% of nominal inductance.
890SD (Standalone) Drive: Frame G, H & J
Caution
catastrophic failure of the drive.
3
50 - 60 Hz
890SD Standalone Drive
Page
4-15