Transcription

GEH-49610 Installation InstructionsSpectra SeriesTm/8000-LineMotor Control CentersInstallation and Maintenance Instructions

Spectra Seriesrm/8000-Line Motor Control CentersTable of ContentsDescription3General3Control Center Bus3Control Center Units4Receiving, Handling, ttom Entry Conduits5Preparation of Flooring5Positioning and Joining Sections6Top Entry Conduits9Equipment Wiring9Individual Unit9Type C Terminal Boards10Between Sections10Installation of Motor Control Center Units11Optional Shutter Assembly12Removal of Draw-out Control Center Units12Optional Power Lockout Device12Operating Handles and Door Interlocks13Test Option (Motor Disconnect)13Assembly of Outdoor Enclosures14Sealers17Purpose17Method of Application17Material17OperationPreparation for Initial Operation1818Maintenance of Equipment19After De-energizing the Equipment19Renewal Parts19Ordering Additional or Replacement Units20Additional Information20Overload Heater Tables29Main Incoming Power Cables20-28

Spectra SeriesTm/8000-Line Motor Control CentersFigure 2. Isolating panel allows access tomain and vertical bus joints. wasomorimgrmlweam SZE11221MIM 111,72,11MI 1SZKIENZIORIMINZIN11.1 WV1.1.EWEN 1r110191111 11.11.7111;11.11111Figure 1. Typical Spectra MCC motor control center withseparate vertical wiring trough open on one section.Caution: Extreme care should be taken when servicing controlwiring or removing units for any purpose from an energized controlcenter since power from an external source may still be applied.General DescriptionThe standard Spectra MCC/8000-Line motor controlcenter vertical section is 20-inches wide by 90-incheshigh (508 mm by 2286 mm) by 22-inches, 20-inches*or 13-inches deep (558 mm, 508 mm or 330.2 mm)(outside dimensions). Sections are fabricated from13 gauge sheet steel, shaped, and reinforced to form arigid, enclosed structure in single- or multiple-sectionlineups.One and one-half-inch (33.1 mm) removable floor sillsand 3-inch (76.2 mm) lifting angles are furnished asstandard. Floor sills and lifting angles add 41/2 inches(114.3 mm) to the over-all control center height.Each vertical section is provided with a minimum 6-inch(152.4 mm) high compartment for horizontal wiring anda 12-inch (304.8 mm) high compartment for horizontalwiring. Master terminal boards are furnished on Type Cequipment. 6, 12 or 18" compartments may be located atthe top of the section. In back-to-back construction, the12- (or 18-inch) compartment is always at the top on therear. If a 12-inch (304.8 mm) compartment is alsorequired at rear bottom, only 51/2 X (or 5X) spaces can beused for mounting starters.Figure 3. Phase relation of bus in back-to-back sectionsfurnished with two vertical bus assemblies.Control Center BusEach section has a large, full-height separate verticalwiring trough with separate removable hinged doorlocated to the right of draw-out units. See Figure 1.The main horizontal bus is located at the top of thesection. The bus is front accessible by opening the glasspolyester isolating panel which isolates the main busfrom the top horizontal wiring compartment, Figure 2.All electrical joints and mechanical bracing bolts arefront accessible.Vertical bus, 300, 450, or 600 amperes*, is bolted to themain bus, making the phase relation of main and verticalbus 1-2-3 top-to-bottom and left-to-right respectively, asviewed from the front. A second vertical bus is added, ifrequired, for mounting units in the rear of the section.This requires a minimum 20-inch (508 mm) deepsection. The phase relation, shown in Figure 3, of thisvertical bus is 1-2-3 left-to-right as viewed from the rear.Ground bus and/or neutral bus, if required, are locatednear the bottom of the vertical section. When neutralbus is supplied, each section will have bottom plates.*Consult motor control center outline drawings furnished by the GeneralElectric Company for dimensions and ratings of equipment on specificinstallations.3

Spectra SeriesTAY8000-line Motor Control THANDLEASSEMBLY6.75" x17.6'(171.4 x 447mm)DIMENSIONX 3.0 in. (76.2mm) FOR UNITS UP TO 225 -AMPRATINGX 4.12 in (104.7mm) FOR UNITS 225-AMPSTHROUGH 1200 AMPSFigure 5. Typical control center starter unit showing (A) disconnectscrew and (B) three-piece hinge.Figure 4. Top view of Spectra MCC/8000-Line illustrating typicalunit disconnect handle protusion.Control Center UnitsConsult publication GET-6728 Selection and Applicationfor detailed listings of units available in theSpectra MCC/8000-Line motor control center.A unit disconnect screw (A), Figure 5, near the base ofthe draw-out units is used for insertion and removal ofunits. An optional cover for the unit disconnect screwmay be provided to prevent access to the screw unlessthe unit line disconnect is switched to the OFF position. Unit stabs are rated 225 amperes maximum; controlterminal blocks are rated 25 amperes continuous duty;Size 1 and 2 draw-out power terminal blocks are rated 50amperes continuous duty. Size 3 and Size 4 powerblocks are rated 100 amperes and 150 amperes continuous duty, respectively. .00 0. IDLI n0 . .00 1-., Mu . , 0r 0 0.Receiving, Handling, Storage0i0 liReceivingFigure 6. Using standard lifting angles to hoist the control center.Before leaving the factory, the motor control center isgiven a final mechanical and electrical inspection and ispacked in keeping with best practices for electricalequipment.Upon receipt of any apparatus, an immediate inspectionshould be made for any damage or loss of equipment intransit. Should damage or missing material be noted, aclaim should be immediately filed with the carrier andthe nearest office of the General Electric Companyshould be notified. Information such as description ofdamage, shipping crate numbers, requisition numbersand panel catalog number should accompany the claim.Do not remove banding, if present, on vertical busassembly, this is required by UL' to achieve short circuitratings.4HandlingControl center sections are always shipped in an uprightposition, in single or group sections. Sections must bemaintained in an upright position during all handling.Never attempt to jack, lift, or move the equipment atpoints other than the lifting angle or floor sills. Use twoor more chains or cables to distribute weight moreevenly. Pinch-bars, pipe rollers, or slings are usefulimplements for handling equipment; but care must betaken to maintain distributed loading and to alwaysapply leverage at the floor sills and/or lifting angle.Figures 6 and 7 show typical handling techniques.

Spectra SeriesTm/8000-Line Motor Control Centers06T WO 16rn.6 nl "MTG HOLES10.00"VERTICAL WIRINGTROUGH AREA4 63"8.13"X*205.5mm 1176 mm254.0mm13.00"330.2mm t8.69"6.81"173.0mm20.7m3.09"78.5mmt /—""19301.21 mm2.16"54.9mFigure 8. Bottom conduit entrance space13-inch (330.2 mm) deep section.Figure 7. Positioning the control center with rollers.AREA FOR GROUND ANDNEUTRAL BUS (IF USED ISEE FIG.15,16,17 AND 18StorageNote: If it is necessary to store the equipment for any length oftime, the following precautions should be taken:TTWOlaw"254.0mm0 63"16 OmmMTG HOLES1. Uncrate equipment.2. Store in a clean, dry area at moderate temperature. Coverwith a suitable canvas or heavy-duty plastic cover to prevententrance of foreign material.3. If equipment must be stored in cool or damp areas, not onlyshould the equipment be completely covered, but heat shouldbe provided to prevent condensation of moisture in theequipment. Energize space heaters (if furnished in theequipment) or place a standard 120-volt lamp rated 75 wattsinside the bottom of each vertical section.SPACE FOR CONDUITENTRANCE2000"A508.0mm13.8I" 350.8mmCare should be taken to plan for any future conduitentrance in advance of control center installation.z/ 777z,15.69"A398.5mmVERTICAL WIRINGTROUGH AR EA-,,,r//7—4 63"205.5mm 1176mm .3.09"78.5mm1763"1.19"Before any installation work is done, consult all drawingsfurnished by the General Electric Company as well as allapplicable contract drawings for the particular installation. Particular attention should be given to the physicallocation of units in the motor control center and theirrelation to existing or planned conduits, busways, etc.Zf. 4478mm30.2mm20.00"508.0mm2.1654.9mmFigure 9. Bottom conduit entrance space20-inch (508.0 mm) deep section. For 22-inch deep sections, add2" (50.8 mm) to dimensions.Note that if both 20-inch (508.0 mm) deep and 13-inch(330.2 mm) deep sections are in a single lineup, frontlineup is required to properly align main bus bars. (SeeFigure 10.) Additional bracing for Seismic Zones 3 and4 will restrict this area.InstallationInstallation of Bottom Entry ConduitsPreparation of flooringConduits can be stubbed in, once the location of themotor control center lineup has been established.Attention should be given to providing a level, evenfoundation for the equipment. The Purchaser mayelect, as shown in Figure 10, to install steel members inthe floor, properly leveled and grouted, although notnormally required.Conduit should be stubbed approximately 2 inches (51mm) above the finished floor line. Figures 8 and 9 showconduit entrance space available at the bottom ofstandard sections. Exceptions to this available space willbe indicated on drawings furnished by the Company forspecific installations.The over-all height of the equipment should be considered with respect to head room, top conduit entry space,and line-up with other equipment.5

Spectra SeriesTm/8000-Line Motor Control CentersFigure 10. Installing steel floor members (Note front line-upof 13-inch [330.2 mm] deep section.NEUTRAL ORGROUND BUS(WHENSPECIFIED)NOTE: CANNOT BE ROLLEDON ROLLERS (FIG.7)WITHOUT FLOOR SILLS.Figure 11. Control center floor sills grouted to floor prior toinstallation to provide level foundation.Note: For handle height to be less than 78 inches (198.1 cm)on sections with 6-inch (152.4 mm) wire way on top, the MCCfloor sills should be grouted into the floor or removed after MCChas been placed in final position. See Figure 11.Anchor bolts may be imbedded in the foundation priorto installation, but they must be prelocated per details ofFigures 8 and 9, or per drawings furnished by theCompany. For shallow-depth (13-inch [330.2 min] )sections, anchor bolts or some other form of externalbracing is needed.Positioning and Joining SectionsIf groups of sections are to be joined together in a finalline-up, remove the end cover plates and the plugbuttons, Figure 12, from the sides of the section to bejoined.6Figure 12. Side view showing cover plates, plug buttons andjoining points for 20-inch (508 mm) deep section.Carefully check and remove any dirt, dust, or bits ofpacking material from the interior of all sections. Use ofa brush, soft cloth, or vacuum cleaner is recommended.Note: Do not use compressed air if it contains moisture.Remove all hardware packages, drawings, etc., which areshipped with the equipment. Check all nuts, bolts, and electricaljoints for tightness.All cables should be pulled through conduits to a pointwhere they will be accessible after the equipment is inplace. Sections can be moved to their final position andproperly leveled.Section side plates, where sections are joined together atinstallation, should be bolted together at points A, B andC, Figure 12.Main, neutral, and ground bus splice bars (with allassociated hardware) are furnished, as necessary, to joinsections together. They are located in the first section tothe right of the joint. See Figures 13 through 18 forapproximate dimensional data for main, neutral andground bus. If the sections are furnished with the 6-inch(152.4 mm) horizontal wiring compartment at the top,removal of the top unit and top horizontal barrier isnecessary to gain access to the main bus.

Spectra Seriesm4/8000-Line Motor Control CentersMCCFigure 17. Standard locationFigure 18. Standard locationof ground and neutral bus forof ground and neutral bus forthe 12-inch (304.8 mm)the 12-inch (304.8 mm)compartment at the bottom ofcompartment at the top ofMCC ("normal position"). 7"MCC ("lowered position").for 22-inch deep (178mm). 11.5" for 22-inch deep (293mm).Figure 13. Side view showing top area dimensions for 20-inch(508 mm) deep section with 2-inch (50.8 mm) bus bars.Figure 19. Remove top unit and shelf.Figure 14. Side view showing top area dimensions for 4"(101.6 mm) bus bars, 20-inch depth shown, 22" deep (A)has increased main bus depth.f OFGROUNDBUSFigure 20. Remove top horizontal shelf and nuts frommain bus support studs.f OF NEUTRALBAR11.06"A260 9mm10.06"A255.5mm11000.(STO HT)76 2mmFigure 15. Ground bus bolteddirectly to section frame. 13" for 22-inch deep(330.2mm).6001ST0 HT)152.4mmFigure 16. Insulatedneutral bus. 11.5" for 22-inch deep(293mm).Figure 21. Insert splice bus bar in left-hand section, extend toright-hand section and secure. All joints should be tightendedper torque values (TABLE 1). Close isolating panels beforereplacing top shelves and units.7

Spectra SeriesTm/8000-Line Motor Control CentersFigure 22. Remove top horizontal shelves (if required), nutsand washers from main bus support studs.Figure 23. Insert splice plates so that the slotted side ison the right. Replace nuts and washers on bus support studsand tighten per TABLE 1.Figures 19 through 21 illustrate progressive steps ininstalling main bus splice plates for the 2-inch (50.8 mm)bus. Figures 22 and 23 illustrate installing main bussplice plates for the 4-inch (101.6) mm) bus. Theprocedure for installing either bus splice is basically thesame. Ground or neutral bus splice plates are similarlyinstalled in the bottom wiring compartment; however,units need not be removed when making neutral andground bus splices in the bottom horizontal wiringcompartment.After completing main bus splices, all joints should betightened per TABLE 1 and the main bus isolating panelfully closed.Table 1. Torque values for m