Eaton Magnum DS Instruction Booklet

Also see for Magnum DS: Technical data Instruction leaflet Instructions Instructional Leaflet

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13Instruction Booklet IB01900001EEffective August 2017Instructions for Magnum DS Metal-EnclosedLow-Voltage ARC Resistant Switchgear AssembliesEATON www.eaton.com3.6.2.3 Connecting Additional Duct SectionsThe duct will be provided and installed in sections of various lengths.Each duct section will consist of 2 equal halves connected together.Sections vary in 10” increments as shown in Figure 13.Between each section, the connection brackets will be installed asshown in Figure 13. Connect successive sections of duct using¼-28 thread forming screws. The extension flanges on the duct con-nection brackets will be attached to one portion of the duct and con-nected on all four sides as shown.The arc duct must be supported every 2 meters (78.7”). The weightfor 2 meters of duct is 220 lbs.Figure 13. Arc Duct Connection Brackets.3.6.2.4 Exhaust Duct Exit DoorThe termination of the exhaust duct will be capped with a hingedexit door (Figure 14). Under normal operating conditions, this doorshall remain closed and is held in place by a thread-cutter screw asshown. In the event of an internal arc, pressure, gasses and debriswill be directed through the exhaust duct and out through the exitdoor. The screw will break loose permitting the door to open.WARNINGIT IS CRUCIAL THE THREAD-CUTTER SCREW IS PRESENT TO HOLD THEDOOR CLOSED. USE OF ANY OTHER MEANS (I.E. BOLT AND WASHER) ORREMOVAL OF THE INSTALLED SCREW WILL VOID THE ARC RESISTANTRATING.DANGERTHE TERMINATION LOCATION OF THE EXHAUST DUCT SHOULD BECAREFULLY CONSIDERED. DUE TO THE RISK OF EXTREMELY HIGHTEMPERATURES, PRESSURES AND DANGEROUS GASSES ESCAPINGTHROUGH THE EXIT DOOR, A FOUR-FOOT CLEARANCE ZONE IN ALLDIRECTIONS IS STRONGLY RECOMMENDED TO REDUCE THE RISK OFDEATH, SERIOUS INJURY AND/OR PROPERTY DAMAGE (FIGURE 16).Figure 14. Exhaust Duct Exit Door Assembly.Figure 15. Exhaust Duct Hood Assembly.DWG NOMODEL REVSHEET OFTITLEALL REV. NOTESLISTED ON SHT. 1 RMODEL FILENAME T.BLKREV-4A25A34188 11PLENUM WALL CUTOUT25A3418G02.iam 1ODON.GASKET MATERIAL TO BEAPPLIED BETWEENWALL MOUNTED HOOD ANDMOUNTING SURFACE.MATERIAL TYPE TOSUIT APPLICATION.

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