3
Instruction Booklet
IB01900001E
Effective August 2017
Instructions for Magnum DS Metal-Enclosed
Low-Voltage ARC Resistant Switchgear Assemblies
EATON
www.eaton.com
Section 1: Introduction
1.1 General Information
Magnum DS Metal-Enclosed Low-Voltage Arc Resistant Switchgear
assemblies with Magnum DS Low-Voltage AC Power Circuit
Breakers control and protect power circuits up to and including
600 volts AC and interrupting capacities up to and including 100kA.
The switchgear assembly is composed of vertical sections that are
arranged to suit the customer’s requirements. Magnum DS switch-
gear utilizes a four-cell high structure design consisting of various
combinations of Magnum DS Low-Voltage AC Power Circuit Breakers
and auxiliary compartments (Figure 1). Bus and cable compartments
provide space for connections, maintenance and inspection. These
spaces are rear-accessible as a standard, or may be front-accessible
as an option. Magnum DS Low-Voltage Arc Resistant Switchgear
provides additional protection to the operator in the event of an
internal arcing fault. This product has been tested in accordance with
IEEE C37.20.7.
WARNING
EATON OFFERS BOTH TYPE 2 AND TYPE 2B LOW-VOLTAGE METAL-
ENCLOSED ARC RESISTANT SWITCHGEAR ASSEMBLIES. FOR TYPE 2, THE
ARC RESISTANT RATING IS ONLY VALID WHEN ALL DOORS ARE CLOSED
AND PROPERLY LATCHED, INCLUDING THE INSTRUMENT COMPARTMENT
(CONTROL COMPARTMENT) DOORS.
THE TYPE 2B OFFERING ALLOWS FOR THE INSTRUMENT COMPARTMENT
(CONTROL COMPARTMENT) DOORS AND THE SECONDARY COMPART-
MENT DOORS TO BE OPENED WHILE STILL MAINTAINING THE ARC
RESISTANT RATING. IT IS IMPORTANT TO ENSURE THAT THE DOOR IS
PROPERLY CLOSED AND LATCHED WHEN AN OPERATOR IS NOT WORKING
IN THIS CELL.
See the nameplate affixed to the assembly to determine arc rating
type.
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 Arc-Resistant
Switchgear.
Figure 1. Magnum DS Switchgear Assembly.
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 SWITCHGEAR 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. IEEE C37.20.1 AND IEEE
C37.20.7 FOR ABNORMAL OPERATION CONDITIONS). THE INFORMATION
GIVEN IN THIS MANUAL APPLIES TO NEMA1 (INDOOR) LOW-VOLTAGE
ASSEMBLIES UTILIZING MAGNUM DS DRAWOUT POWER CIRCUIT
BREAKERS UNLESS OTHERWISE NOTED. FOR OTHER OPTIONS, SEE THE
DOCUMENTS LISTED IN SECTION 4.
1.2 Safety Features
Each Magnum DS Assembly is manufactured with built-in interlocks
and safety-related features. They are provided to reduce hazards to
operating personnel and provide proper operating sequences.
DANGER
METAL-ENCLOSED LOW-VOLTAGE SWITCHGEAR ASSEMBLIES ARE
PROVIDED WITH MANY SAFETY FEATURES. NEVERTHELESS, WHEN
CONNECTED THEY CONTAIN POWER CIRCUITS WITH HIGH FAULT
CAPACITY. THE VOLTAGES AND POWER LEVELS AVAILABLE IN THIS
EQUIPMENT MAKE CONTACT WITH BARE CONDUCTORS OR TERMINALS
EXTREMELY DANGEROUS, AND IS LIKELY TO BE FATAL. ALL POWER
SHOULD BE TURNED OFF OR APPROPRIATE PROTECTIVE EQUIPMENT
USED WHEN WORKING ON SUCH EQUIPMENT. IN ADDITION TO THE
HAZARDS INHERENT TO THE SWITCHGEAR ASSEMBLY ITSELF, OPERATION
BY UNQUALIFIED PERSONS MAY CAUSE INDIRECT DAMAGE TO
CONNECTED EQUIPMENT AND INJURY TO OPERATORS OF CONNECTED
EQUIPMENT.
UNDER NO CIRCUMSTANCE SHOULD THE INTERLOCKS OR OTHER SAFETY
FEATURES BE MADE INOPERATIVE OR DISABLED, AS THIS MAY RESULT IN
DEATH, BODILY INJURY OR PROPERTY DAMAGE.
TO PROTECT PERSONNEL DURING THE INSTALLATION, OPERATION
AND MAINTENANCE OF THIS, THE FOLLOWING PRACTICES MUST BE
FOLLOWED:
