Eaton VacClad-W Instruction Booklet

Also see for VacClad-W: Instructions for installation, operation, maintenance

25Instruction Booklet IB32267ARCEffective December 2010VacClad-W 38 kV arc-resistantswitchgear indoor housingseaton Corporation www.eaton.comSection 10: primary bus joints field tapingprocedure (38 kV)Materials for cleaning• Isopropyl alcoholMaterials for taping• Filler—A putty-like material, trade names, Scotchfil or Nashau102 Pieces of insulating tape may be used• Insulating tape and pad—High voltage EPR insulating tape, tradename Scotch 130CDefinitionsJoint: Area to be covered with tape Consists of bare conductorand 1 50 inches of any pre-insulation next to the bare conductorPre-insulation: Any insulation covering adjacent to an exposedconductor prior to tapingLayer: Insulating tape, 1 00 inch (25 4 mm) wide, wrapped fromone end of the joint to the other (or to a pad) so each succeedingturn laps the previous turn by the amount specified in the chartOverlap: A specified distance measured along the pre-insulationstarting from where the pre-insulation ends and the exposedconductor beginsPad: Any insulating tape applied which is wider than 1 00 inch(25 4 mm) Includes a band of tape consisting of one or moreturns wrapped directly on top of each otherTaping instructionsElongate insulating tape 10 to 25 percent during application toensure a smooth, tight fit On pads, elongate corners onlyShould a tape roll expire, start the new role by overlapping theprevious end by 1/2 turnT-joints with hardware—(See Figures 34–38)1. Clean area of dirt and foreign matter2. Wipe fluidized epoxy coating around bus ends withisopropyl alcohol3. Apply filler over bare conductor and hardware to cover and tosmooth out the surface Blend contour into pre-insulation surfacesTry to prevent air pockets Cover conductors and hardware withat least 0 12 inch (3 0 mm) of filler per Figure 344. Apply 3 00-inch (76 2 mm) x 0 03-inch (0 8 mm) thick pad #1over center of joint with 1 25 (31 8 mm) laps (Figure 35) Apply3 00-inch (76 2 mm) x 0 03-inch (0 8 mm) thick pad #2 starting0 50-inch (12 7 mm) from center and extending over epoxyfluidize insulation at least 1 00-inch (25 4 mm) with 1 25-inch(31 8 mm) laps Apply 3 00-inch (76 2 mm) x 0 03-inch (0 8 mm)thick pad #3 starting 1 00-inch (25 4 mm) from pad #2 at centerand extending 1 00-inch (25 4 mm) over epoxy fluidize insulationper Figure 365. Apply three 6 00-inch (152 4 mm) wide x 12 00-inch (304 8 mm)long x 0 03-inch (0 8 mm) thick pads (pad #4) centered over themain bus and extending 1 50 inches (38 1 mm) down over theriser per Figure 376. Apply one layer of insulating tape 1 00-inch (25 4 mm) x0 03-inch (0 8 mm) using 2/3 lap and extending 0 50-inch(12 7 mm) minimum beyond the pads on the epoxyfluidize (Figure 38)7. Apply a second layer of insulating tape 1 00-inch (25 4 mm) x0 03-inch (0 8 mm) using 2/3 lap and extending 0 50-inch(12 7 mm) minimum beyond the first layer on the epoxyfluidize per Figure 38Through joints with hardware—(see Figures 39–42 )1. Clean area of dirt and foreign matter2. Wipe fluidized epoxy coating around bus ends withisopropyl alcohol3. Apply filler over bare conductor and hardware to cover and tosmooth out the surface Blend contour into pre-insulation surfacesTry to prevent air pockets Cover conductors and hardware withat least 0 12-inch (3 0 mm) of filler per Figure 394. Apply 3 00-inch (76 2 mm) x 0 03-inch (0 8 mm) thick pad #1over center of joint with 1 25 laps (Figure 40)5. Apply 3 00-inch (76 2 mm) x 0 03-inch (0 8 mm) thick pad #2starting 0 50-inch (12 7 mm) from center and extending overepoxy fluidize insulation at least 1 00-inch (25 4 mm) with 1 25laps Apply 3 00-inch (76 2 mm) x 0 03 (0 8 mm) inch thickpad #3 starting 1 00-inch (25 4 mm) from pad #2 at center andextending 1 00-inch (25 4 mm) over epoxy fluidize insulationper Figure 416. Apply one layer of insulating tape 1 00-inch (25 4 mm) x0 03-inch (0 8 mm) using 2/3 lap and extending 0 50-inch(12 7 mm) minimum beyond the pads on the epoxy fluidize(Figure 42)7. Apply a second layer of insulating tape 1 00-inch (25 4 mm) x0 03-inch (0 8 mm) using 2/3 lap and extending 0 50-inch(12 7 mm) minimum beyond the first layer on the epoxyfluidize per Figure 42Figure 34. Typical Joint with 0.12-Inch (3.0 mm) Thick MinimumFiller Over Bare JointFigure 35. Typical Joint with 3.00 x 0.03-Inch (76.2 x 0.8 mm)Tape Over Filler

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