Eaton EFX48 e-Fuse Series, Installation And Operation Manual

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EFX48-xx Series with RM3-340/440 Installation and Operation Guide
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Copyright © 2019 Eaton Corporation. All Rights Reserved.
IPN March 2019
Installation Tasks
Before starting the installation, review the following information:
•
Required Equipment and Tools on page 153
•
Warnings and Cautions on page 52
•
Inspecting the Equipment and Reporting Damage on page 53
Complete the Installation tasks in the following order:
Task Description Reference
1 Check the AC Supply and Grounding See details on page 56
2 Move Mounting Brackets (if required) See details on page 58
3 Mount the RM3-340/440 in the Rack See details on page 59
4 Connect the DC Load and Battery Cables See details on page 61
5 Install the Batteries See details on page 64
6 Connect Mid-point Monitoring (if required) See details on page 64
7 Mount the Battery Temperature Sensor See details on page 65
8 Connect External Input/Output Cabling (if required) See details on page 66
9 Connect to the AC Supply Point See details on page 67
Task 1 - Check the AC Supply and Grounding
It is important that the ac supply for the RM3-340/440 dc power system includes the correct
levels of protection.
Step 1 - High ac voltage protection at the site
1
Check if the ac voltage is expected to exceed 275V (L-N or L1-L2).
2
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.
3
Install the HVPU as in the following diagram.
4
Connect the High VAC alarm output to one of the Digital Inputs on the GPIO
terminal block of the EFX48 e-Fuse unit (see the diagram on page 151 for
location). Then configure this Digital Input as the High VAC alarm by following
the instructions on page 102.
 The High VAC alarm signal lines must be isolated from the ac supply by a
voltage-free relay contact – note that this is NOT contained within the
EFX48 unit.