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RM3-400/410/420 Series Installation and Operation Guide
Installation Tasks
Before starting the installation, review the following information:
Required Equipment and Tools on page
•
Warnings and Cautions on page
•
Inspecting the Equipment and Reporting Damage on page
•
Complete the Installation tasks in the following order:
Task Description
1
Check the AC Supply and Grounding
2
Move Mounting Brackets (if required)
3
Mount the RM3-400/410/420 in the Rack
4
Connect Input/Output Cabling (some models only)
5
Connect Optional External I/O Module (some models only)
6
Connect Mid-point Monitoring (if required - SC200 only)
7
Interconnect RM3-400 (if used as an extension power shelf)
8
Connect the Output Cables
9
Connect to the AC Supply Point
For installation of external communications see Communications Options in the System
Controller Operation Handbook.
Task 1 - Check the AC Supply and Grounding
It is important that the ac supply for the RM3-400/410/420 dc power system includes the
correct levels of protection.
Step 1 - High ac voltage protection at the site
1
2
3
4
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Check if the ac voltage is expected to exceed 275V (L-N or L1-L2).
If so, then it is strongly recommended that an external high voltage protection
unit (HVPU) be installed. This will automatically disconnect the ac at high
voltage and reconnect it at normal voltage.
Install the HVPU as in the following diagram.
Connect the High VAC alarm output to one of the Digital Inputs on the I/O
Interface Board (see the diagram on page
The High VAC alarm signal lines must be isolated from the ac supply by a voltage-
free relay contact.
Copyright © 2007-2010 Eaton Corporation. All Rights Reserved.
IPN 997-00012-62E
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for location).
June 2010
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Reference
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