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Instruction Booklet
IB01900002E
Effective June 2011
Instructions for Magnum DS Metal-Enclosed
Low-Voltage NEMA 3R Assemblies
EATON CORPORATION
www.eaton.com
Read and understand these instructions before attempting to
unpack, assemble, operate or maintain this type equipment.
NOTICE
ALL POSSIBLE CONTINGENCIES WHICH MAY ARISE DURING
INSTALLATION, OPERATION OR MAINTENANCE, AND ALL DETAILS AND
VARIATIONS OF THIS EQUIPMENT DO NOT PURPORT TO BE COVERED BY
THESE INSTRUCTIONS.
If further information is desired by purchaser regarding the particular
installation, operation or maintenance of particular equipment, con-
tact the local Eaton representative.
WARNING
METAL-ENCLOSED LOW-VOLTAGE NEMA 3R ASSEMBLIES COVERED BY
THESE INSTRUCTIONS ARE DESIGNED AND TESTED TO OPERATE WITHIN
THEIR NAMEPLATE RATINGS. OPERATION OUTSIDE OF THESE RATINGS
MAY CAUSE THE EQUIPMENT TO FAIL RESULTING IN DEATH, SERIOUS
INJURY AND/OR PROPERTY DAMAGE. ALL RESPONSIBLE PERSONNEL
SHOULD LOCATE THE EQUIPMENT RATING NAMEPLATE AND BE FAMILIAR
WITH THE INFORMATION PROVIDED THEREON.
Purpose
This instruction manual is expressly intended to cover the installa-
tion, operation and maintenance of Magnum DS® Metal-Enclosed
Low-Voltage NEMA 3R Assemblies used with Magnum DS® Power
Circuit Breakers or CM52 Network Protectors.
NOTICE
THIS INSTRUCTION MANUAL IS INTENDED TO EMPHASIZE THE FEATURES
AND ENHANCEMENTS UNIQUE TO MAGNUM DS NEMA 3R SWITCHGEAR
AND SWITCHBOARDS. IT IS NOT INTENDED TO BE A COMPLETE
MANUAL FOR THE INSTALLATION, OPERATION AND MAINTENANCE OF
MAGNUM DS METAL-ENCLOSED LOW-VOLTAGE ASSEMBLIES, BUT IS
SUPPLEMENTAL IN NATURE; AND APPENDS THE ORIGINAL ONLY AS
DESCRIBED HEREIN. FOR COMPLETE INSTRUCTIONS CONCERNING
MAGNUM DS METAL-ENCLOSED LOW-VOLTAGE ASSEMBLIES, SEE
IB01901001E.
For application information consult applicable descriptive bulletins,
application publications and/or the applicable industry standards. For
installation, operation and maintenance of Low-Voltage Power Circuit
Breakers see separate instruction book listed in Section 6.
Safety
All safety codes, safety standards and/or regulations MUST be
strictly observed in the installation, operation and maintenance of
this equipment.
DANGER
THE DANGER, WARNING AND CAUTION MESSAGES INCLUDED AS PART
OF THE PROCEDURAL STEPS IN THIS MANUAL ARE FOR PERSONNEL
SAFETY AND PROTECTION OF EQUIPMENT FROM DAMAGE. AN
EXAMPLE OF A TYPICAL WARNING LABEL HEADING IS SHOWN ABOVE
THIS PARAGRAPH TO FAMILIARIZE PERSONNEL WITH THE TYPE OF
PRESENTATION. THIS WILL HELP TO ASSURE THAT PERSONNEL ARE
ALERT TO THESE MESSAGES. IN ADDITION, THESE MESSAGES ARE ALL
UPPER CASE AND BOLDFACE.
Section 1: Introduction
1.1 General Information
Magnum DS Metal-Enclosed Low-Voltage NEMA 3R Switchgear and
Switchboard Assemblies are uniquely designed for use in outdoor
environments or other harsh conditions. The NEMA 3R Enclosure
is a "skin" or "shell" that contains and protects the standard indoor
assembly from the elements associated with outdoor installations,
such as falling rain, sleet or snow. Therefore, most features and
options inherent to the standard indoor enclosure are available in the
NEMA 3R version, as well. These assemblies are tested to the rig-
ors of UL 50E and certified as a NEMA Type 3R enclosure.
These assemblies contain the same distribution options as standard
indoor assemblies and may use Magnum DS, Magnum SB and/or
Series NRX® Power Circuit Breakers to control and protect power
circuits up to and including 600 volts AC and interrupting capacities
up to and including 200kA.
The switchgear or switchboard assembly is composed of vertical
sections that are arranged to suit the customer’s layout require-
ments. Magnum DS switchgear and switchboards utilize a four-cell
high structure design consisting of various combinations of Magnum
DS, Magnum SB and/or Series NRX Power Circuit Breakers and
auxiliary compartments (See IB01901001E referenced in Section 6).
Bus and cable compartments provide space for connections, mainte-
nance and inspection. Power cable connections are rear-accessible
as a standard, or may be front-accessible as an option.
Access to the circuit breakers is available via a walk-in design (42"
aisle-way) as a standard, or a non-walk-in design (aisle-less) as an
option.
This instruction manual contains important procedures and informa-
tion pertinent to the receiving, handling, storage, installation, opera-
tion and maintenance of Magnum DS Low-Voltage Metal-Enclosed
NEMA 3R Assemblies.
NOTICE
INFORMATION PROVIDED IN THIS INSTRUCTION MANUAL AND BY OTHER
SUPPLIED DOCUMENTATION AND/OR DRAWINGS SHOULD BE READ AND
UNDERSTOOD BY ALL PERSONNEL RESPONSIBLE FOR SUPERVISION,
OPERATION OR MAINTENANCE. FAMILIARIZATION SHOULD ALWAYS
INCLUDE THE CHARACTERISTICS OF EACH PIECE OF EQUIPMENT
CONTAINED IN OR MOUNTED ON THE ASSEMBLY.
PROPER INSTALLATION, OPERATION AND MAINTENANCE ARE
ESSENTIAL TO ASSURE CONTINUED SATISFACTORY SERVICE FROM THE
EQUIPMENT. IT SHOULD NOT BE INSTALLED IN PLACES WHERE IT WILL
BE REQUIRED TO OPERATE AT VOLTAGE, CURRENTS OR FAULT CAPACITIES
GREATER THAN THOSE FOR WHICH IT WAS DESIGNED, OR WHERE THE
ENVIRONMENTAL CONDITIONS ARE DIRTY, CORROSIVE, HUMID OR
OTHERWISE HARSH OR UNSUITABLE. (REF. ANSI C37.20.1 FOR ABNORMAL
OPERATION CONDITIONS). THE INFORMATION GIVEN IN THIS MANUAL
APPLIES TO NEMA 3R LOW-VOLTAGE ASSEMBLIES UTILIZING THE
MAGNUM DS FAMILY OF DRAWOUT POWER CIRCUIT BREAKERS UNLESS
OTHERWISE NOTED. FOR OTHER OPTIONS, SEE THE DOCUMENTS LISTED
IN SECTION 6.
