Sentron Low Amp Busway System

Transcription

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2 Sentron Low mp usway System S L P L 0 Warehouse atalog Straight Sections Elbows and Offsets End Tap oxes Stock Numbering Tees enter Tap oxes System

3 Flanged Ends Expansion Fittings, Hangers, Supports Technical Data usway Reducers and End losures and Specifications Phase Rotation Flanges Fittings mp Sentron Low mp usway 7

4 Warehouse Stock Sentron Low mp usway Sentron Low mp busway is available from warehouse stock in a wide offering of straight sections and fittings essential for completing busway runs. Ordering from stock, can save the contractor both time and money over cable and conduit. luminum 3-phase, 3-wire and 3-phase, 4-wire busway is available from 225 amps to 600 amps. 3-phase, 3-wire and 3-phase, 4-wire busway is available from 225 amps to 800 amps. also available with integral or internal ground. ll warehouse stock is rated IP40. The chart to the right lists straight sections and fittings available through warehouse stock. Sentron Low mp Warehouse Stock mpere Rating Description luminum ft. Plug-in 10 ft. Plug-in 5 ft. Feeder N/ N/ 10 ft. Feeder N/ N/ Flat Elbows Edge Elbows End Tap oxes enter Tap oxes Flanged Ends N/ N/ Flanges Hangers End losures ft. Plug-in 10 ft. Plug-in 5 ft. Feeder 10 ft. Feeder Flat Elbows Edge Elbows End Tap oxes enter Tap oxes Flanged Ends Flanges Hangers End losures 6 ft. Plug-in 10 ft. Plug-in 5 ft. Feeder 10 ft. Feeder Flat Elbows Edge Elbows End Tap oxes enter Tap oxes Flanged Ends Flanges Hangers End losures 8

5 Sentron Low mp atalog Numbering System Suffix part of atalog Numbers S L P L 0 6 Sentron Low mp SL = US Lengths onfiguration 3 = 3Ø, 3W 4 = 3Ø, 4W 5 = 3Ø, 4W 200% Neutral mpere Rating 02 = = = = 800 us ar Material = = luminum Ground 1 = Integral (Housing) 2 = Internal us ar 3 = Isolated Ground IP Rating 0 = IP40 3 = IP43 4 = IP54 us ars only Ground ars only Ground ars only: available in luminum us ars available in us ars only Plug-in Feeder Elbows Tees Offsets ombinations L D L E F O Length Length Edge Flat Edge Flat Edge Flat Edge Up Edge Down Edge Up Edge Down Flat Left Flat Left Flat Right Flat Right 04 = 4'0" 06 = 6'0" 08 = 8'0" 10 = 10'0" 02 = 2'0" 03 = 3'0" 05 = 5'0" 10 = 10'0" Up Down Right Left Up Down Right Left Up Down Right Left Flat Left Flat Left Flat Right Flat Right Edge Up Edge Down Edge Up Edge Down Sentron Low mp usway Standard feeder lengths shown. For custom lengths, use the last three catalog number characters for length in inches, e.g.: 8'-11" feeder = SL40210F107 atalog Numbers for Hangers and Flanges can be found on page 17 Specials must be ordered by description (drawing must be included) See page 56 for New Order hecklist End able Tap oxes enter able Tap oxes Service Heads Transposition T T H R Vertical Horizontal Transformer Standard Standard 1 =1 Phase 3 =3 Phase PG = Phase & Ground PO = Phase only GO = Ground only Joint Stacks Flanged Ends End losures EXpansion Sections Reducers Standard Isolation E S Fused Non-fused 9

6 Straight Sections Plug-In and Feeder Sentron Low mp usway of Joint Standard Feeder Section Suffix FD02, FD03, FD05, FD in. (3048 mm) Standard Plug-In Section (Standard plug-in outlets on both sides on 24 in. centers) Suffix PL04 (4 ft.), PL06 (6 ft.), PL08 (8 ft.), PL10 (10 ft.) 24 in. (610 mm) G ø ø ø Neutral of Joint G ø of Joint Plug-in Outlet of Joint Sentron Low mp ø ø Neutral Straight Sections Sentron Low mp usway can be ordered with luminum or bus bars. luminum bars are available in ampere sections, and include an integral housing ground. n optional copper internal or isolated ground bar is available in ampere sections. bars are available in ampere sections, and include an integral housing ground. n optional copper internal ground bar is available. copper isolated ground bar is available for ampere copper busway. Sentron Low mp is also available in IE ratings from amperes with aluminum bus bars or amperes with copper bus bars. Sentron Low mp housing is a two-piece extruded aluminum design which is assembled using a henrob fastening process. The self-piercing rivet technology is a mechanically applied mixture of zinc, tin and aluminum that coats the rivet to resist salt, galvanic and other forms of corrosion. The self-piercing rivets provide optimal structural integrity. Feeder Sections Feeder busway carries the current of the busway system from the supply source. Feeder busway does not have plug-in outlets. Sentron Low mp IP40 feeder sections are warehoused in standard lengths. ustom lengths and IP43 and IP54 may be ordered from the factory. Sentron Low mp Feeder sections meet IP40 (indoor), IP43 (spray proof), and IP54 (splash proof) requirements. One joint stack assembly is supplied per feeder section. Plug-In Sections Sentron Low mp plug-in sections are designed with plug-in openings centered on 24 in. (610mm) intervals. Plug-in openings are staggered on both sides of the busway for optimum utilization. IP40 plugin sections are warehoused in standard lengths. Sentron Low mp plug-in sections meet IP40 (indoor). IP43 (spray proof), and IP54 (splash proof) requirements. One joint stack assembly is provided per plug-in section. Plug-In Outlet Features The plug-in outlet molded guard design prevents incidental finger contact with live conductors. Sentron Low mp plug-in outlets are IP 2X rated: a.472 in. (12mm) test probe is unable to enter a plug-in outlet. onfiguration connections are clearly marked on the plug-in outlet to ensure proper contact of phase and ground bars with bus plug fingers. 10

7 Sentron Low mp usway Widths and Weights mpere Profile pproximate Weight lbs per ft. (kg per meter) Rating 3-Phase 3-Phase 3-Phase 3-Phase 3-Phase 3-Phase 3-Wire 3-Wire 4-Wire 4-Wire 4-Wire 4-Wire with Ground with Ground 200% Neutral 200% Neutral with Ground luminum (4.0) 3.0 (4.4) 2.9 (4.3) 3.1 (4.7) 3.0 (4.5) 3.3 (4.9) 400 D 3.6 (5.4) 4.1 (6.2) 3.9 (5.9) 4.4 (6.6) 4.2 (6.3) 4.7 (7.1) 600 E 5.0 (7.5) 5.8 (8.7) 5.6 (8.3) 6.4 (9.5) 6.2 (9.2) 7.0 (10.4) (4.0) 2.9 (4.2) 3.0 (4.4) 3.1 (4.6) 3.2 (4.8) 3.4 (5.0) Sentron Low mp usway (5.7) 4.1 (6.1) 4.4 (6.5) 4.6 (6.9) 4.9 (7.3) 5.2 (7.7) 600 D 5.7 (8.5) 6.2 (9.2) 6.7 (10.0) 7.2 (10.7) 7.7 (11.5) 8.2 (12.2) 800 E 9.0 (13.3) 9.8 (14.5) 10.8 (16.1) 11.7 (17.3) 12.7 (18.9) 13.5 (20.1) 5.00 in. (127 mm) 2.00 in. (51mm) 2.75 in. (70mm) 4.05 in. (103mm) 5.50 in. (140mm) Profile arsize 0.75 x (19 x 2.4) Profile arsize 1.50 x in. (38 x 2.4mm) Profile D arsize 2.80 x in. (71 x 2.4mm) Profile E arsize 4.25 x in. (108 x 3.2mm) 11

8 Elbows and Tees Sentron Low mp usway Elbows Sentron Low mp elbows provide a simple, convenient method of changing the direction (left, right, up or down) of a busway run. ll elbows are shipped with a joint stack assembly on one end for direct connection to the busway system. Flatwise elbows are used for left and right directional changes when the busway system is mounted in the horizontal plane; bus bars run parallel to the floor. The joint stack assembly may be moved to the opposite leg to change the orientation from left to right/right to left. Flat Right Elbow Suffix ELFR Flat Left Elbow Suffix ELFL of Joint Edge Up Elbow Suffix ELEU L Edge Down Elbow Suffix ELED of Joint Edgewise elbows create up and down directional changes. The joint stack assembly on edgewise elbows can not be moved in order to change orientation from up to down/down to up. For both edgewise and flatwise elbows the sum of the two legs may not exceed 10 ft. (3.05m). See drawings for minimum/standard dimensions. of Joint L of Joint Tees Tees are used to simplify directional and plane orientation changes in a busway system. Tees can make 90 bends left or right and up and down along the busway run. ll tees are supplied with two joint stack assemblies. Flat Right Tee Suffix TEFR of Joint Edge Up Tee Suffix TEEU (203 mm) (203 mm) L (203 mm) Of Joint Flatwise tees are used to create left and right branches. 20 in. (508 mm) 1 (457 mm) 34 in. (864 mm) Edgewise tees are used to create branches that stem up or down from the busway run. Flat Left Tee Suffix TEFL of Joint Edge Down Tee Suffix TEED L L L (203 mm) 34 in. (864 mm) (203 mm) 4 in. (102 mm) 1 (457 mm) 16 in. (407 mm) L Of Joint 20 in. (508 mm) Of Joint dd 4 inches (102mm) for internal or isolated ground. 12

9 Offsets Offsets Offsets can be utilized to solve difficult contour problems and save space. In applications where space does not allow for two connected elbows, a single offset can bypass an obstruction. ll offsets are supplied with one joint stack assembly. The overall dimension may not exceed 10 ft. (3.05m). Flat Right Suffix OFFR of Joint Edge Up Suffix OFEU of Joint Sentron Low mp usway Flat Left Suffix OFFL Edge Down Suffix OFED of Joint of Joint Flatwise Offsets, Minimum Leg Dimensions mpere Std./min. Rating Inches (mm) luminum (178) (191) (216) (178) (178) (191) (216) Edgewise Offsets, Minimum Leg Dimensions mpere Std./min. Rating Inches (mm) luminum (216) (216) (216) (216) (216) (216) (216) 13

10 End Tap oxes and enter Tap oxes Sentron Low mp usway End Tap oxes End tap boxes are non-fusible devices used to connect cable and conduit to the end of a busway run or where busway runs connect without the need for overcurrent protection. End tap boxes may be installed at the end or beginning of a run. Vertical end tap boxes and horizontal end tap boxes can be installed in both horizontal and vertical applications. One joint stack assembly is provided with each end tap box. Horizontal End Tap oxes, Lugs mpere able Lugs per Phase and Neutral Rating Qty. Size u/l Ground Lugs #6 WG-350 kcmil luminum #6 WG kcmil #4 WG kcmil #4 WG kcmil #6 WG kcmil #4 WG kcmil 1 Horizontal End Tap ox Suffix ETHS (203 mm) 8.6 in. (218 mm) 15 in. (381mm) 31.5 in. (800 mm) enter Tap oxes enter tap boxes are non-fusible devices utilized to feed to or take off power from the busway run. When loads served by the busway run do not require overcurrent protection, center tap boxes may be used. enter tap boxes are an actual part of the busway run and require a space of 32 in. (810mm) for installation. One joint stack assembly is provided with each center tap box #4 WG kcmil #4 WG kcmil 1 Vertical End Tap oxes, Lugs luminum #6 WG kcmil #4 WG kcmil #4 WG kcmil #6 WG kcmil #4 WG kcmil 1 Vertical End Tap ox Suffix ETVS 10 in. (254mm) 20 in. (510 mm) (203mm) 24.5 in. (622mm) 15 in. (381mm) #4 WG kcmil #4 WG kcmil 1 (305mm) 20 in. (508mm) enter Tap oxes, Lugs luminum #6 WG kcmil 1 enter Tap ox Suffix TS (203mm) 30 in. (762mm) #4 WG kcmil in. (155mm) #4 WG kcmil #4 WG kcmil #4 WG kcmil #4 WG kcmil #4 WG kcmil 1 (203mm) 10 in, (254mm) L usway Note: 15 in. (381mm) gutter provided 16 in. (406mm) 20 in. (508mm) 24 in. (610mm) for isolated ground 14

11 Flanged Ends Flanged Ends Flanged ends provide a direct connection to low voltage switchgear, switchboards, motor control centers, large power panels, and other electrical distribution equipment. Flanged ends are shipped with one joint stack assembly. The switchgear manufacture supplies lugs and mounting hardware. See illustration for flanged end drilling patterns. combination flange/elbow may be used when the busway is in close proximity to the switchgear. Flatwise and edgewise combination flange/elbows require a minimum clearance of 5 in. (127mm) off the top of the switchboard to the centerline of the busway. Flanged Ends us ar Drilling Pattern, Dimensions mpere Dimensions Inches (mm) Figure No. Rating W luminum (38) 0.75 (19) in. (381mm) 1.50 in. (38mm) 6.13 in. (158mm) 0.62 in. (16mm) ase 7.87 in. (200mm) 3.94 in. (100mm) Dashed lines denote cutout 0.62 in. 0.3 (16mm) (10mm) 5.00 in. (127mm) in. (254mm) 1.55 in. (39mm) 7.50 in. (191mm) 4.33 in. (110mm) in. (321mm) ase 6.32 in. (161mm) 0.62 in. (16mm) Joint Stack 8.00 in. (203mm) Flanged End Suffix FE Sentron Low mp usway (71) 1.40 (36) (108) 1.25 (32) (19) 0.38 (97) (38) 0.75 (19) 2 Ground 8.00 in. (203mm) (71) 1.40 (36) (108) 1.25 (32) 2 ø.56 in. (14mm) 3.57 in. (91mm) W Neutral Ø Ø Ø Isolated Ground 4.00 in in in in. (102mm) (102mm) (102mm) (102mm) 2.13 in in. (54mm) (128mm) Ground Strap ase 0.8 (22mm) 0.8 (22mm) 0.3 (10mm) 0.44 in. (11mm) Figure 1 Figure in. (44mm) 4.50 in. (114mm) 1.75 in. (44mm) 4.50 in. (114mm) 1.75 in. (44mm) 1.13 in. (29mm) 1.13 in. (29mm) 1.13 in. (29mm) 1.40 in. (36mm) 2.80 in. (71mm) Housing Ground W Fig 1, 0.75 in. (19mm), Fig 2, 1.50 in. (38mm) and 2.80 in. (71mm) ars 1.75 in. (44mm) W For 4.25 in. (108mm) ars 15

12 Expansion Fittings, Reducers and Phase Rotation Fittings Sentron Low mp usway Expansion Fittings Expansion fittings accommodate for expansion and contraction of a busway run. In order to compensate for the difference in the coefficient of expansion between the copper/aluminum bus bars and the aluminum housing, an expansion fitting must be used. Expansion fittings are installed in the center of long busway runs, where both ends of the run are held in a permanent, fixed positions or where a busway run crosses an expansion joint of a building. dditionally, NEM recommends the use of expansion fittings when the run exceeds 200 ft. (608m). Expansion fittings allow for a +/- 2 in. (50.8mm) movement along the length of the busway system. Expansion Fitting Suffix XS (203mm) Fused Reducer Suffix RF 3 (965mm) 24. (630mm) (203mm) 25 in. (608mm) for isolated ground in. (324mm) 21 in. (533mm) Phase Rotation Fitting Suffix TRPG, Phase and Ground TRPO, Phase only TRGO, Ground only (203 mm) (203 mm) 10 in. 4 (254 mm) (1219 mm) 32 in. (813 mm) Phase Rotation Examples 9 in. (229 mm) Fused Reducers The NE (rt ) requires overcurrent protection when busway systems are reduced in ampacity. fused reducer is used to reduce the allowable ampere rating in those sections of the busway run that do not require a higher rating (i.e. at branch circuit junctures). Non-Fused Reducers Non-fused reducers are used in conjunction with the following exception to the NE (rt ): "For industrial establishments only, omission of overcurrent protection shall be permitted at points where busways are reduced in ampacity, provided that the length of the busway having the small ampacity does not exceed 50 ft. (15.2m) and has an ampacity of at least equal to one-third the rating or setting of the overcurrent device next back on the line, and provided that such busway is free from contact with combustible material." 1.5 in. (38mm) 36 in. (914mm) 4.5 in. (114mm) 11 in. (279mm) 20 in. (508mm) 20 in. (508mm) Phase-Rotation Fittings Phase-rotation fittings can be used when the application requires a phase rotation in the power supply. Phase rotation fittings can be ordered for "phase and ground", "phase only" and "ground only" rotations. N G N G N N N N G N N G Special joint stack connections are provided for non-fused reducer connections. onsult Factory for specific design guidelines. 16

13 Hangers, Supports, End losures and Flanges Hangers complete selection of hangers is available to support Sentron Low mp usway in both vertical and horizontal applications. The standard picture frame hanger comes complete with hardware (cat# UJ100) to connect to a ceiling hung drop rod. The contractor must supply drop rods to complete assemblies for both picture frame hangers and trapeze hangers. Picture frame and trapeze hangers are designed to be hung on maximum 10 ft. (3.05m) centers throughout the busway run. dditional hangers may be used if structural requirements mandate their use. Spring hangers and floor supports must be used in vertical applications to provide secure mounting of the busway run. Spring hangers counter the weight of the busway on each floor and also compensate for minimal building movement and thermal expansion. Maximum distance between spring hangers or supports may not exceed 16 ft. (4.88m). When ordering 18 ft. (5.49m) floor to ceiling height assemblies, intermediate supports or hangers are necessary. Flanges Wall, ceiling and floor flanges are available for Sentron Low mp usway. When the busway run passes through a wall, ceiling or floor a flange should be used. Flanges do not offer support to the busway, only a means of covering the hole created in the existing structure. n additional sealant may be required to meet fire codes and all other local requirements. No caulking or gasketing is provided with Sentron Low mp flanges. End losures End closures safely terminate a busway run and protect the bus bar ends. End closures may be removed easily in order to extend a busway run. End closures are shipped with Glastic insulation pieces; however, joint stacks and inspection covers are not included. To ensure proper installation, refer to the end closure installation instruction sheet shipped with end closure. Wall Mounted Hanger SLWH 4" D 9.25 in. (235 mm) = 4 in. plus D/2 (refer to page 11) Spring Hanger Piercing Screw 16 in.min. (406mm) Floor Flange (optional Spring Hanger of Joint Stack 2 in.min. (51mm) by others Wall, eiling and Floor Flanges Picture Frame Hanger SLPF (Rods not included) utout Lifting Kit usway 5.82 in. of Joint specially designed lifting kit (cat. no. SLLK) (148 mm) is recommended when installing Sentron SLWF1 SLWF (183) 7.94 (202) 3.50 (89) 4.25 (108) 600 SLWF (235) 5.55 (141) Low mp usway. This lifting kit is designed 800 SLWF (272) 7.00 (178) to help properly install the busway without damaging equipment during the process. 17 Support olt Jam Nut Leveling 10 in. (254mm) 3.25 in. (83 mm) End losures Suffix E (Joint stack and covers not included) (UJ100 included) in. (254 mm) 6.50 in. (165 mm) utout Floor Support Hanger SLFS 2.25 in. (57mm) Spring Hangers, Requirements mpere atalog ssembly for Floor to eiling Height Rating 10 ft. 12 ft. 14 ft. 16 ft. 18 ft. luminum usway 225 SLSH218 SLSH218 SLSH235 SLSH418 SLSH SLSH418 SLSH418 SLSH418 SLSH435 SLSH SLSH418 SLSH435 SLSH435 SLSH435 SLSH435 usway 225 SLSH218 SLSH218 SLSH418 SLSH418 SLSH SLSH418 SLSH418 SLSH418 SLSH435 SLSH SLSH435 SLSH435 SLSH435 SLSH435 SLSH SLSH435 SLSH435 SLSH635 SLSH635 SLSH635 For height not listed, use next higher value. dditional floor support necessary for intermediate support 0.63 in in. (16 mm) (127 mm) in. (10 mm) /2 (15 mm) 3.62 in. (92 mm) Figure 1 Figure 2 Wall, eiling and Floor Flanges, Dimensions mpere atalog No. Fig. Dimensions Inches (mm) Rating Flange utout luminum usway utout Trapeze Hanger SLTH (Rods and Nuts not included) 3.62 in. (92 mm) 3.25 in. (83 mm) 0.50 in. (12 mm) Dia. Threaded Rod.75 in. (19.1 mm) 8.63 in. (219 mm) in. (254 mm) 6.50 in. (165 mm) utout 225 SLWF (202) 4.25 (108) 400 SLWF (235) 5.55 (141) 600 SLWF (272) 7.00 (178) Sentron Low mp usway

14 Technical Data Temperature Heat Rise, LUMINUM Temperature Heat Rise, OPPER Sentron Low mp usway Load in mps usway Size 600 Load in mps usway Size Temperature Rise (above ambient) Temperature Rise (above ambient) Voltage Drop mpere us ar Width Ohms x 10-3 per 100 feet Voltage Drop - oncentrated Loads, Line-to-Line per 100 feet at 100% Rated Load, 35 mbient Rating x Thickness Line to Neutral Power Factor Inches (mm) R Z X luminum (38) x.094 (2.4) (71) x.094 (2.4) (108) x.125 (3.2) (19) x.094 (2.4) (38) x.094 (2.4)) (71) x.094 (2.4) (108) x.125 (3.2) Notes: 1. For plug-in distributed loads, divide voltage drop values by To determine voltage drop line-to-neutral, multiply line-to-line values by ctual voltage drop for different lengths and at loadings less than full rated current can be calculated using the formula: V d (actual) = Vd (table) x actual load x actual length (ft) rated load 100 feet 4. For 50 Hz, multiply reactance (X) by 0.85 and resistance values do not change. For 400 Hz, multiply reactance by 3.75 and multiply resistance by 1.4. alculate new voltage drop: V d = amps load x = 3(Rcos θ + X sin θ) per 100 ft, where cos θ = Power Factor. 5. For metric conversion R, X, Z values in Ohms per meters Line to Neutral R x.0328 X x.0328 Z x For metric conversion Line to Line per meter at 25 ambient in mv//m (V d 32.8) / Divide V d by 2 for distributed loads. 18

15 Ground apacity mpere us ar Width ars Min. Sectional rea Sectional rea Sectional rea urrent arrying Rating Inches (mm) per Pole Ground us or Enclosure 50% Internal Integral (Housing) apacity Ratio UL 857 Table 6.1 Ground ar Ground Integral/Internal In 2 (mm 2 ) In 2 (mm 2 ) In 2 (mm 2 ) luminum (18) (54.0) (54.19) ( ) (71) (100.64) ( ) (108) (151.61) ( ) (19) (34.0) (27.74) ( ) (38) (54.19) ( ) Sentron Low mp usway (71) (100.64) ( ) (108) (68.0) (151.61) ( ) 5.92 Note: Ground bar thickness =.055 in. (1.4mm) 50% Internal or Isolated Ground (PE) Phase (L 1 ) Phase (L 2 ) Phase (L 3 ) 100% Neutral (N) 200% Neutral (N) UL 1479 Fire Rated Installation Sentron Low mp is certified in accordance with UL 1479 and offers a two hour fire rating for gypsum wallboard construction, and a three hour fire rating for concrete slab or block penetrations. These ratings are achieved using standard busway installed with SpecSeal sealant from Specified Technologies Inc. UL Short ircuit Ratings mpere us ar Width RMS Symmetrical (k) Rating Inches (mm) 6 cycle 1 sec. 3 sec. luminum (38) x.094 (2.4) (71) x.094 (2.4) (108) x.125 (3.2) (19) x.094 (2.4) (38) x.094 (2.4) (71) x.094 (2.4) (108) x.125 (3.2)

16 Sentron Low mp usway Specifications Sentron Low mp usway 1.0 General. Furnish and install a complete low impedance prefabricated busway distribution system as shown on the plans.. usway shall be volts phase wire with minimum 50% capacity integral ground. luminum housing shall qualify for grounding purposes.. The ampere ratings, approximate footage, fitting, plug-in units, etc., are shown on the plans. The electrical contractor shall be responsible for routing the busway to coordinate with the other trades. Final field measurements shall be made by the contractor prior to release of the busway for fabrication. 2.0 Short-ircuit Rating and Tests. The short-circuit rating of the busway shall be (consulting engineer s calculated required rating), RMS symmetrical amperes.. The short circuit rating of the busway shall be determined according to UL Standard No. 857 or IE and This rating must be based upon actual tests at the rated short-circuit current for six (6) cycles. 3.0 asic onstruction. Housing 1. The busway housing shall be of extruded aluminum painted with polyester urethane powder paint to provide protection against corrosion. 2. The busway housing shall be totally enclosed non-ventilated for protection against mechanical damage and dust accumulation. 3. The busway shall be certified for IP 40 Indoor, IP 43 Spray Proof, IP 54 Splash Proof).. Joint 1. The busway joint shall be of the onebolt type which utilizes a high strength steel bolt and elleville washers to maintain proper pressure over a large contact surface area. 2. The bolt shall be torque indicating, fully insulated and at ground potential. 3. The bolt shall be two-headed design to indicate when proper torque has been applied and require only a standard long handle wrench to be properly activated. Joint (cont d) 4. ccess shall be required to only one side of the busway for tightening joint bolts. 5. It shall be possible to remove any joint connection assembly to allow electrical isolation or physical removal of a busway length without disturbing adjacent busway lengths.. us ars 1. The bus bars shall be tin plated at all contact surfaces. 2. Each bus bar shall be insulated over its entire length with lass, 130 electrostatically applied epoxy insulation. 3. The temperature rise at any point in the busway shall not exceed 55 rise above ambient temperature when operating at rated load current. D. Plug-in Openings 1. On plug-in busway there shall be five dead front, hinged cover type plug-in openings on each side of ten-foot lengths. 2. ll openings shall be usable simultaneously. 3. usway shall be installed so that plugs are side mounted to permit practical use of all ten plug-in openings. 4. It shall be possible to inspect the plug-in opening and bus bars prior to the installation of the plug-in unit. 5. ll plug-in openings should be rated IP2X. E. Support of usway 1. Hanger spacing shall be noted on layout drawings and should not exceed manufacturers recommendations. 2. Feeder and plug-in busway shall be approved for hanger spacing of up to 10 ft. for horizontally mounted runs and up to 16 ft. for vertically mounted runs. F. Underwriters Laboratories Listing 1. ll straight lengths, fittings, and plugin units shall be listed and marked in accordance with UL Standard No. 857 or IE and This listing shall include mounting of the busway in any position (i.e., horizontal, flatwise, edgewise, and vertical) without derating. 4.0 Voltage Drop. The voltage drop (input voltage minus output voltage) specified shall be based on the busway operating at full rated current and at stabilized operating temperature in 35 ambient temperature.. The three-phase, line-to-line voltage drop shall not exceed 4.2 volts per hundred feet at 70% power factor concentrated load, which condition may exist during motor starting. 5.0 Plug-In Units. Plug-in units shall be circuit breaker type or fusible switch type with visible blade, and quick-make / quick-break mechanism.. Plug-in units which cannot be operated directly from the floor shall be equipped with suitable means for hookstick operation.. The interrupting rating of circuit breaker plug-in units shall be [ ] RMS symmetrical amperes. 6.0 Plug-In Unit Safety Devices. Each plug-in unit shall be mechanically interlocked with the busway housing to prevent installation or removal of plug-in units while the switch is in the ON position.. Plug-in enclosures shall make positive ground connection with the ground bus before the contact fingers make contact with the phase bars.. The plug-in units shall be equipped with internal barriers to prevent accidental contact with live parts on the line side of the protective device during time of wire pulling. D. overs of all plug-in units must have releasable type interlocks to prevent the cover from being opened when the switch is in the ON position. 7.0 Fire Rating. The busway shall be UL Listed to meet two-hour fire ratings for gypsum wallboard construction and three-hour fire rating for poured concrete or concrete block construction. 8.0 Quality. ll busway products shall be manufactured in a facility which is Quality Systems registered to ISO pproved Suppliers. ll major components shall be of the same manufacturer as the busway. The busway and plug-in units shall be manufactured by Siemens. 20