Grounding
Make sure that the electric device is correctly grounded. Do not operate the electric device without correctly attached
protective earth conductor. Obey the installation instructions and the guidelines for component selection given in
this user guide.
The grounding cable must be able to carry the maximum supply fault current which normally will be limited by the fuses
or the Miniature Circuit Breaker (MCB). Put correctly rated fuses or MCB in the mains supply of the electrical device: obey
the local legislation and recommendations.
Obey the installation instructions and the guidelines for component selection given in this user guide.
Make sure that the safety grounding is correct. Refer to chapter
.
Generic grounding guidelines
Connect the ground terminal of each electric device individually to the site grounding bus bar
(through the lter if installed).
The grounding connections cannot loop from one electric device to another electric device, or
to any other piece of equipment, or from any other piece of equipment.
Ground impedance must be compliant with local industrial safety regulations.
The protective ground of the unit must be connected to the system ground. Ground
impedance must meet with the requirements of national and local industrial safety regulations
and electrical requirements. The condition of the grounding connections must be checked
periodically.
Make sure that all grounding surfaces are clean and remove paint from the contact areas.
For detailed information, see appropriate chapters in this user guide.
Main frame
The best grounding is achieved when the main frame of each electric device is directly connected
to the ground. If this is not possible, the electric device must be grounded at least from one of the
safety grounding points with an appropriate grounding cable. For good functional grounding use
wide at grounding braid. Round grounding wires are adequate for safety grounding but it
does not provide very good functional grounding because of its higher impedance at high
frequencies. The grounding points are marked to the electric device.
EC-C1200-450
5. Installation
40 |
©
Danfoss | Produced By: Danfoss Power Solutions | January 2019
| BC265735231757en-000109
Summary of Contents for EC-C1200-450
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