Data-Voice-Video 3G Power Solutions (UL-Listed Models)
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Copyright © 2011 Eaton Corporation. All Rights Reserved.
IPN 997-00012-82B May 2011
Step 5 - Connect at the ac supply point
1
Check the ac supply point is isolated.
2
Connect the cable to the ac supply point.
Follow the manufacturer's instructions and local wiring regulations.
3
Label the connection at the ac supply point.
Step 6 - Check terminations, secure cables and test insulation
1
Check all terminations are correct and are tightened.
2
Secure the cable with cable ties to ensure there is no strain on terminals.
3
Test the insulation resistance of the conductors according to local ac wiring
regulations.
Procedure complete
Connecting the Output to Earth
Step 1 - Connect dc common busbar to earth
Install a separate conductor from the dc common busbar to earth. This conductor
must be rated to carry the combined fault current of all battery strings.
If this conductor is not installed then battery fault current will be carried by the ac-dc
earth link and the ac earth conductor which are typically too small for such currents.
Step 2 - Check ac-dc Earth Link
An ac-dc earth link is factory fitted in the dc power system as shown in the following
diagram.
Rack cabinet
AC earth link
DC earth / communications earth
DC common bus
Factory fitted ac-dc earth link
If your installation uses a mesh earth, then Eaton recommends that this factory fitted
ac-dc earth link is retained. No further action is then required (ignore Step 3).
However, if your policy is not to bond the ac and communications earth, then go to
Step 3.
