Eaton EFX48 e-Fuse Series, Installation And Operation Manual

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EFX48-xx Series with RM3-340/440 Installation and Operation Guide
52
Copyright © 2019 Eaton Corporation. All Rights Reserved.
IPN March 2019
Warnings
This section contains important warnings. Read these warnings before installing or operating
RM3-340/440 Series dc power systems.

Electrical Safety
•
The case of a RM3-340/440 Series dc power system is a fire enclosure as specified in UL 60950-1. The
system is to be installed in an enclosed cabinet.
•
The dc power system may be powered from multiple ac sources. All power sources must be isolated
before internally servicing the equipment.
•
The dc power system must be connected to a suitable and readily accessible disconnect device(s). The ac
plug may be suitable as the disconnect device. See details on page 67.
•
The dc power system is not compatible with IT (Impedance Terra) ac supply. For advice see Worldwide
Support on page 161.
•
A registered electrician (or suitably qualified person) must check the integrity of the installed cabling
BEFORE the dc power system is powered up.
•
Tasks must be performed in the sequence documented in this guide.

Location and Environment
•
The RM3-340/440 must be installed in a Restricted Access Location (dedicated equipment rooms,
equipment closets, or similar) in accordance with, for example, the U.S. National Electric Code (NEC),
ANSI/NFPA No. 70, and/or according to the applicable local codes.
•
For ease of access and to maintain optimum system cooling, observe the clearances stated on page 59.
•
Ensure the ambient temperature and humidity are within the ranges in the Specifications on page 138.
•
Dust build-up within the RM3-340/440 may cause premature failure. In dusty environments filter the
ventilation air entering the equipment room. Ensure regular cleaning of the air filters.
•
Do not allow water or any foreign object to enter the RM3-340/440. Do not place objects containing liquid
on top of or near the unit.

Hazardous Energy Levels
•
Rectifiers and batteries contain hazardous energy levels. Only personnel trained and experienced in dc
power systems are to service/maintain this equipment.
•
Always use insulated tools.
•
Do not short-circuit the live and common bus bars or cables.

Rectifiers
•
Do not install the rectifiers until the room has been cleaned and is dust free.
•
To reduce the risk of electric shock and maintain optimum system cooling, always cover empty rectifier
slots with blanking panels.
•
To avoid electrical shock, do not place hands inside the rectifier magazine.
•
Rectifier cases may exceed 100ºC (212ºF), especially after prolonged operation. Use suitable gloves when
removing a rectifier from the magazine.
•
Do not attempt to disassemble faulty rectifiers. Return them (in their original packaging) with a
completed Equipment Incident Report on page 159.