Connecting To Ground; Installing Upstream Fuses; Upstream Fuse Considerations - Danfoss VLT FC 103 Operating

VLT® Refrigeration Drive FC 103
Operating Guide

5.8.6 Connecting to Ground

LEAKAGE CURRENT HAZARD
Leakage currents exceed 3.5 mA. Failure to ground the drive properly can result in death or serious injury.
-
Ensure the correct grounding of the equipment by a certified electrical installer.
POTENTIAL EQUALIZATION
There is a risk of burst transient when the ground potential between the drive and the control system is different.
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Install equalizing cables between the system components. Recommended cable cross-section: 16 mm
1. Strip a section of the outer cable insulation.
2. Fasten a connector/cable lug to the end of the stripped cable.
3. Connect the ground cable to the nearest grounding terminal.
4. Tighten the terminals in accordance with the specifications shown in
Example
1
2
3
Illustration 53: Connection Grounding Points
1 Symbol indicating grounding terminals
2 Grounding points on drive module

5.9 Installing Upstream Fuses

5.9.1 Upstream Fuse Considerations

Factory fuse options like a fusible disconnector or MCCB protect the busbars and circuits within the drive. To protect the cables, an
installer should use separate F1 fuses for upstream protection.
Danfoss A/S © 2020.09
W A R N I N G
N O T I C E
10.11 Fastener Torque
3 Grounding bar (provided in every cabinet)
Electrical Installation
2
(5 AWG).
Ratings.
AQ357954340588en-000201 / 130R0881 | 89