Connecting The Ac Mains - Danfoss VLT AutomationDrive FC 302 Operating Manual

Electrical Installation

5.5 Connecting the AC Mains

•
Size the wiring according to the input current of the drive. For maximum wire sizes, see chapter 9.1 Electrical Data.
•
Comply with local and national electrical codes for cable sizes.
Procedure
1. Strip a section of the outer cable insulation.
2. Establish mechanical fixation and electrical contact between the cable shield and ground by positioning the
stripped wire under the cable clamp.
3. Connect the ground wire to the nearest grounding terminal in accordance with the grounding instructions
5 5 provided in chapter 5.6 Connecting to Ground.
4. Connect the 3-phase AC input power wiring to terminals R, S, and T (see Illustration 5.4).
5. Tighten the terminals in accordance with the information provided in chapter 9.10.1 Fastener Torque Ratings.
6. When supplied from an isolated mains source (IT mains or floating delta) or TT/TN-S mains with a grounded leg
(grounded delta), ensure that parameter 14-50 RFI Filter is set to [0] Off to avoid damage to the DC link and to
reduce ground capacity currents.
NOTICE
OUTPUT CONTACTOR
Danfoss does not recommend using an output contactor on 525–590 V drives that are connected to an IT mains
network.
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VLT® AutomationDrive FC 302
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