Access Power Solutions Installation and Operation Guide (APS3-330 Series)
26
Copyright © 2007-2018 Eaton Corporation. All Rights Reserved.
IPN 997-00012-07A1 July 2018
Step 3 - Mount the APS
1
Carefully feed the ac supply cable or cord(s) into the rack.
2
Lift the APS to the correct position in the rack.
A suitable mechanical support or a second person must support the weight of the
APS.
3
Attach the APS using four rack mounting screws. Tighten the screws.
Procedure complete
Task 5 - Connect the DC Load and Battery Cables
•
If the APS dc power system is to be installed in a location where the ambient temperature
may rise above 50ºC (122ºF), then 90°C rated cable rated cable must be used for the dc load
and battery connections.
Step 1 - Remove covers
1
Remove the distribution front cover.
2
Remove the top cover (if fitted).
Step 2 - 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 3 - Connect battery cables
•
Always check that the battery cables have been terminated to the correct system polarity
BEFORE connecting the batteries or closing the battery disconnect device.
•
Connecting batteries to the system with incorrect system polarity will void all warranty
claims.
1
Select battery cable to suit the maximum battery current and voltage drop
requirements. Also refer to the table of minimum cable sizes for specific MCBs
2
Route the battery cables to the APS.
If the optional top cover is used then route the cables under the cable tie rod.
3
Terminate the battery common cable(s) with an M8 crimp lug.
4
Connect the battery common cable(s) on the common bar at the battery
termination points. Tighten according to the Standard Torque Settings on page
5
Terminate the battery live cable(s) at the battery MCB(s). Tighten the terminals.
The current rating of the MCBs must be derated to 75%.
6
Switch OFF all MCBs.
