Technical Data TD01701001E Effective December 2013 Supersedes August 2011 UL low voltage busway Pow-R-Way III Contents Description Page General description. . . . . . . . . . . . . . . . . . . . . . . . 2 Standards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Construction details. . . . . . . . . . . . . . . . . . . . . . . . 3 Electrical data . . . . . . . . . . . . . . . . . . . . . . .
Technical Data TD01701001E UL low voltage busway Pow-R-Way III Effective December 2013 General description Eaton’s Pow-R-Way III is a 600V, totally enclosed, non-ventilated, sandwich bus design available with copper busbars in ratings from 225 to 5000A or with aluminum busbars from 225 to 4000A. Pow-R-Way III is available in outdoor feeder, indoor feeder, indoor plug-in, and indoor sprinkler-proof configurations.
Technical Data TD01701001E UL low voltage busway Pow-R-Way III Effective December 2013 Construction details (Figure 3) Integral ground Conductor/insulation system The two-piece, extruded aluminum housing is designed, manufactured, and UL Listed as a 50% integral ground path (integral earth) and is fully fault rated. The system ground continuity is maintained through each joint by the ground path end blocks, ground path plates, and joint covers.
Technical Data TD01701001E UL low voltage busway Pow-R-Way III Effective December 2013 200% neutral option (Figure 4) UL fire stop system Pow-R-Way III offers a fully rated, 200% neutral bus option for busway fed distribution systems with nonlinear loads . The additional neutral capacity prevents the overheating caused by zero sequence harmonic currents . The Pow-R-Way III 200% neutral is manufactured with a single 0 .50 inch (12 .
Technical Data TD01701001E UL low voltage busway Pow-R-Way III Effective December 2013 Pow-R-Bridge (Figure 7) Pow-R-Way III joint connections are made with the Pow-R-Bridge joint package, which is installed on each section of busway prior to shipment. A double-headed, torque-indicating bolt is provided to ensure that proper installation torque is achieved. Fall-away instruction tags are furnished on the torque-indicating bolt heads to allow for visual inspection from a distance.
Technical Data TD01701001E UL low voltage busway Pow-R-Way III Effective December 2013 Pow-R-Way III feeder busway (Figure 10 and Table 3) • 225 to 5000A copper • 225 to 4000A aluminum CL CL T Straight sections of feeder busway can be supplied in any length, at 1/8 inch (3.2 mm) increments, from a 16.00 inch (406.4 mm) minimum to a 10 foot (3m) maximum. Figure 10 illustrates the configuration of feeder busway and Pow-R-Bridge for the available ampere ratings.
Technical Data TD01701001E UL low voltage busway Pow-R-Way III Effective December 2013 Pow-R-Way III plug-in busway (Figure 11 and Table 4 and Table 5) • 225 to 5000A copper • 225 to 4000A aluminum Straight sections of plug-in busway are made only in 24.00-inch (609.6 mm) incremental lengths with a maximum length of 10 feet (3m). Figure 11 depicts the configuration of plug-in busway and Pow-R-Bridge for the available ampere ratings. See Table 4 below for reference to the proper configuration.
Technical Data TD01701001E UL low voltage busway Pow-R-Way III Effective December 2013 Electrical data Table 8. Resistance, Reactance, and Impedance—Copper Table 6. Short-Circuit Rating Milliohms per 100 Feet (30.
Technical Data TD01701001E UL low voltage busway Pow-R-Way III Effective December 2013 Electrical data (continued) Line-to-line voltage drop The table below gives average three-phase voltage drop per 100 feet (30.5m) at rated current and varying power factor. Line-to-neutral voltage drop is obtained by multiplying the line value by 577. Table 11.
Technical Data TD01701001E UL low voltage busway Pow-R-Way III Effective December 2013 Electrical data (continued) Housing ground vs. internal ground Eaton’s Pow-R-Way III busway offers a variety of grounding options. Two of which are 50% integral housing ground and 50% internal ground. The 50% internal ground option has a separate ground conductor internal to the housing, which is rated 50% of the phase conductor.
Technical Data TD01701001E UL low voltage busway Pow-R-Way III Effective December 2013 Physical data Dimensions—busbar and housing Table 13. Three-Wire with No Neutral UL 857 Ampere Rating Conductor Configuration and Housing Size (Width x Height) Inches (mm) Cu Al Phase Bar Size (Depth and Width) Inches (mm) 225 400 600 800 1000 1200 1350 1600 2000 — 2500 3200 4000 — 5000 225 400 600 — — 800 1000 1200 1350 1600 2000 — 2500 3200 4000 0.25 x 1.62 (6.4 x 41.1) 0.25 x 1.62 (6.4 x 41.1) 0.25 x 1.
Technical Data TD01701001E UL low voltage busway Pow-R-Way III Effective December 2013 Physical data (continued) Dimensions—busbar and housing (continued) Table 15. Four-Wire with 200% Neutral UL 857 Ampere Rating Cu Al Phase Bar Size (Depth and Width) Inches (mm) a 225 400 600 800 1000 1200 1350 1600 2000 — 2500 3200 4000 — 5000 225 400 600 — — 800 1000 1200 1350 1600 2000 — 2500 3200 4000 0.25 x 1.62 (6.4 x 41.1) 0.25 x 1.62 (6.4 x 41.1) 0.25 x 1.62 (6.4 x 41.1) 0.25 x 1.62 (6.4 x 41.1) 0.
Technical Data TD01701001E UL low voltage busway Pow-R-Way III Effective December 2013 Physical data (continued) Weights Table 16.
Technical Data TD01701001E UL low voltage busway Pow-R-Way III Effective December 2013 Physical data (continued) Table 18. Ampere Ratings Needed to be at or Below 1000 Amperes/Sq In Density UL 857 Ampere Rating Copper Cu Al Bar Size Standard Density 1000A/Sq In Density Adjusted Rating Aluminum Standard Density 1000A/Sq In Density Adjusted Rating 225 400 600 800 1000 1200 1350 1600 2000 — 2500 3200 4000 — 5000 225 400 600 — — 800 1000 1200 1350 1600 2000 — 2500 3200 4000 1.62 1.62 1.62 1.
Technical Data TD01701001E UL low voltage busway Pow-R-Way III Effective December 2013 Physical data (continued) Rearward Fittings Upward There is a fitting to meet every application need: flanges, elbows, offsets, tees, cable tap boxes, weatherheads, transformer connections, power take-off sections, reducers, adapter cubicles, expansion joints, and end closures. Forward These fittings, along with standard and minimum dimensions, are described on the following pages.
Technical Data TD01701001E UL low voltage busway Pow-R-Way III Effective December 2013 Physical data (continued) Table 19. Forward and Rearward Elbows Traditional indoor and outdoor elbows (Figure 17) UL 857 Ampere Rating Elbows are used to make 90° changes in the direction of busway runs. The four types that are available are forward, rearward, upward, and downward. See minimum leg lengths listed for each type in Table 19 and Table 20.
Technical Data TD01701001E UL low voltage busway Pow-R-Way III Effective December 2013 Table 22. Upward/Downward Corner Joints Dimensions in Inches (mm) UL 857 Ampere Rating Housing Ground Cu X Y X Y X Y 4.70 (119.6) 4.70 (119.6) 4.70 (119.6) 4.70 (119.6) 4.70 (119.6) 4.70 (119.6) 4.70 (119.6) 4.70 (119.6) 4.70 (119.6) 4.70 (119.6) 4.70 (119.6) 4.70 (119.6) 4.70 (119.6) 4.70 (119.6) 4.70 (119.6) 4.35 (110.5) 4.35 (110.5) 4.35 (110.5) 4.35 (110.5) 4.35 (110.5) 4.35 (110.5) 4.35 (110.5) 4.
Technical Data TD01701001E UL low voltage busway Pow-R-Way III Effective December 2013 Physical data (continued) Special angle elbows Special angle elbows are traditional elbows that allow the direction of the busway runs to change at angles greater than 90°. They allow easy routing through non-traditional corridors. The four types offered are forward, rearward, upward, and downward. See minimum leg lengths for each type listed in Table 23 and Table 24. Table 23.
Technical Data TD01701001E UL low voltage busway Pow-R-Way III Effective December 2013 Physical data (continued) Standard and flush flanges (Figure 20) Flanges provide a direct connection to low voltage switchgear, switchboards, motor control centers, and other apparatus.
Technical Data TD01701001E UL low voltage busway Pow-R-Way III Effective December 2013 Physical data (continued) CL CL Elbow flanges (Figure 22) An elbow flange is a combination of a standard elbow and a standard flange fabricated into a single fitting. Elbow flanges are typically used when the minimum leg lengths for either the standard elbow or standard flange cannot be maintained. Minimum leg lengths are listed in Table 26 and Table 27.
Technical Data TD01701001E UL low voltage busway Pow-R-Way III Effective December 2013 Physical data (continued) Offsets (Figure 23) An offset is used to avoid obstacles and to conform to the building’s structure. It is two elbows fabricated into a single fitting for use where space restrictions prohibit the use of two standard 90° elbows. The minimum leg lengths are listed in Table 28 and Table 29. NNote: All dimensions are to the centerline of the Pow-R-Bridge. CL Y CL 3.
Technical Data TD01701001E UL low voltage busway Pow-R-Way III Effective December 2013 Physical data (continued) CL Combination offsets (Figure 24) Combination offsets are used to conform to the building’s structure and change direction, using a small amount of space. They are two different oriented elbows fabricated into a single fitting. Forward or rearward directions are determined by the “T” and “F” locations. Please refer to page 15. Minimum leg lengths are listed in Table 30.
Technical Data TD01701001E UL low voltage busway Pow-R-Way III Effective December 2013 Physical data (continued) Table 32. Upward and Downward Tees (continued) Tees (Figure 25) UL 857 Ampere Rating A tee is a busway fitting suitable for connection in three directions. The minimum leg lengths are shown in Table 31 and Table 32. Cu Al X A Y B C 2500 2000 Table 31. Forward and Rearward Tees 3200 — 4000 2500 27.62 (701.6) 23.88 (606.6) 25.12 (638.1) 25.88 (637.4) 27.62 (701.6) 12.
Technical Data TD01701001E UL low voltage busway Pow-R-Way III Effective December 2013 Physical data (continued) Crosses (Figure 26) A cross is a busway fitting suitable for connection in four directions. It is applied when a bus run must branch off in three directions, all in the same plane. Table 33.
Technical Data TD01701001E UL low voltage busway Pow-R-Way III Effective December 2013 Physical data (continued) 38.00 (965.2) End cable tap box (Figure 27) End cable tap boxes are used to feed a run of busway with cable and conduit or where loads served by busway are connected without the need for overcurrent protection. For indoor applications, the “T” side, side opposite “T,” and the end panel are removable for access to the lugs.
Technical Data TD01701001E UL low voltage busway Pow-R-Way III Effective December 2013 Physical data (continued) Center cable tap box (Figure 28) Center cable tap boxes are used to center feed a run of busway with cable and conduit or where loads served by the busway are connected without the need for overcurrent protection. For indoor applications, the “T” side, side opposite “T,” and the end panel are removable for access to the lugs.
Technical Data TD01701001E UL low voltage busway Pow-R-Way III Effective December 2013 Physical data (continued) Weatherheads (Figure 29) Weatherheads are used for service entrance connections to busway. The side opposite of “T” is removable for access to the lugs. NNote: All dimensions are to the centerline of the Pow-R-Bridge. Table 38.
Technical Data TD01701001E UL low voltage busway Pow-R-Way III Effective December 2013 Physical data (continued) Phase transpositions (Figure 31 and Figure 32) Expansion joints (Figure 30) Phase transposition fittings are used in applications where a phase rotation is needed due to a change in phasing from the source equipment to the load equipment. Both 90° and 180° rotations are possible. In each case, all conductors are rotated.
Technical Data TD01701001E UL low voltage busway Pow-R-Way III Effective December 2013 Physical data (continued) Three-phase transformer taps (Figure 34) Single-phase transformer taps (Figure 33) Three-phase transformer taps are used when making connections to a three-phase transformer. The bus extensions do not include drilling or lugs. Single-phase transformer taps arrangements are used for connections to three single-phase transformers.
Technical Data TD01701001E UL low voltage busway Pow-R-Way III Effective December 2013 Physical data (continued) Table 44. Transformer Throat Connections Transformer throat connections (Figure 35 and Figure 36) UL 857 Ampere Rating A transformer throat is used when making connections to a liquidfilled substation transformer. All transformer throat connections include flexible connectors between the transformer low voltage spades and Pow-R-Way III busbars.
Technical Data TD01701001E UL low voltage busway Pow-R-Way III Effective December 2013 Physical data (continued) Protected reducers (Figure 39) Transformer flange connections (Figure 37 and Figure 38) Protected reducers are used to reduce the ampacity of busway using either a circuit breaker or a fused, non-automatic circuit breaker overprotection device. Both serve as a disconnecting means.
Technical Data TD01701001E UL low voltage busway Pow-R-Way III Effective December 2013 Physical data (continued) In-line PTO Meter center power takeoffs The in-line PTO shown in Figure 42 is built integral with the busway, having the busway pass through the device. This space-saving design reduces the horizontal wall space by up to 24.00 inches (609.6 mm). With this device, there is no need to install a separate main device; saving installation time and money.
Technical Data TD01701001E UL low voltage busway Pow-R-Way III Effective December 2013 Physical data (continued) C Bridge Joint In-line power takeoff 12.00 (304.8) Main circuit breaker PTO The in-line main circuit breaker PTO shown in Figure 43 is available with trip ratings from 300A to 1200A; using L, M, and N frame circuit breakers. This device is indoor rated and may be weatherized upon request. See Table 46 for dimensions and ratings. Main fusible switch PTO 20.00 (508.
Technical Data TD01701001E UL low voltage busway Pow-R-Way III Effective December 2013 Physical data (continued) Busway-connected panelboards Pow-R-Way III busway-connected panelboards save space and installation time by eliminating the need to install a bus plug and cable over to a panelboard. This special enclosure plugs directly on to vertical busway and accepts Eaton PRL1a, PRL2a, and PRL3a main circuit breaker panelboard interiors. The enclosure also accepts 28.00-inch (711.
Technical Data TD01701001E UL low voltage busway Pow-R-Way III Effective December 2013 Physical data (continued) Table 48. Available Pow-R-Way III Adapters Pow-R-Way III adapters (Figure 48 and Figure 49) Busway Types Brand Minimum Adapter Length in Inches (mm) Low impedance busway Low impedance plug-in busway Pow-R-Way busway Westinghouse Westinghouse 60.00 (1524.0) 60.00 (1524.0) Westinghouse/Eaton Westinghouse/Eaton 36.00 (914.4) 36.00 (914.4) Eaton Eaton Eaton Contact factory 36.
Technical Data TD01701001E UL low voltage busway Pow-R-Way III Effective December 2013 Physical data (continued) Wall/floor flanges (Figure 50) Busway Height Wall and floor flanges are used to fit around the busway and close off the opening made to allow the bus run to pass through a floor or wall. Wall and floor flanges are for cosmetic purposes only and do not provide any type of vapor or fire barrier.
Technical Data TD01701001E UL low voltage busway Pow-R-Way III Effective December 2013 Physical data (continued) 1 Bar Per Phase Only A Horizontal hangers One hanger is provided for every 10 feet (3m) of horizontally mounted busway. The type of hanger supplied is determined by the specific mounting requirements of the busway. (For hook hangers and angle hangers, see Figure 53 and Figure 54.) B C Duct Width Drop rods 0.50-inch (12.
Technical Data TD01701001E UL low voltage busway Pow-R-Way III Effective December 2013 Physical data (continued) Table 56. Flatwise Vertical Hangers (T and T-Opposite Sides) A Figure 55. Sway Brace Sway brace Sway brace brackets provide a provision to brace the busway run at a 45-degree angle, restricting the suspended busway from swinging. Sway braces can be ordered as part number BVC1102G01 regardless of height of busway dimension “A”.
Technical Data TD01701001E UL low voltage busway Pow-R-Way III Effective December 2013 Plug-in protective devices Plug-in device mounting All Pow-R-Way III plug-in units are designed with the safety of the installer and user as the key criteria. The following features are standard for both fusible and circuit breaker type plug-in units: The load end of a plug-in unit varies with the orientation of the busway as determined by the “F” and “T” markings (see Figure 60 below).
Technical Data TD01701001E UL low voltage busway Pow-R-Way III Effective December 2013 Plug-in device mounting (continued) Plug-in openings are spaced every 24.00 inches (609.9 mm) starting 12.00 inches (304.8 mm) in from the centerline of each bridge joint with a maximum of five openings per side of an individual section of busway. Figure 61 and Figure 62 illustrate the number of plug-in openings taken up by each style/size bus plug.
Technical Data TD01701001E UL low voltage busway Pow-R-Way III Effective December 2013 SPD plug-in devices SPD Series (Figure 63) The Pow-R-Way III plug-in device product offering includes a surge protective device (SPD), which is ideal for busway fed distribution systems. A transient voltage is a random, high energy, short duration electrical anomaly. These high energy surges can disrupt, damage, or destroy sensitive microprocessor-based equipment.
Technical Data TD01701001E Effective December 2013 UL low voltage busway Pow-R-Way III Plug-in devices (continued) Ground detector/neutralizer bus plug (Figure 65) IQ Energy Sentinel bus plugs (Figure 64) In rare cases, busbars in a busway system pick up static electricity. In order to discharge this potential, a neutralizer and ground detector bus plug is available. The unit has three 18,000 ohm resistors connected between the busbars and the ground.
Technical Data TD01701001E UL low voltage busway Pow-R-Way III Effective December 2013 Plug-in devices (continued) Digitrip OPTIM bus plugs (Figure 67) Digitrip OPTIME is a programmable, communicating, microprocessor-based electronic trip unit system for Eaton Series C circuit breakers. OPTIM is available for Pow-R-Way III bus plugs on K-Frame (125–400A), L-Frame (70–600A), and N-Frame (400–1200A) circuit breakers.
Technical Data TD01701001E UL low voltage busway Pow-R-Way III Effective December 2013 Power takeoff sections CL Pow-R-Bridge Power takeoff sections are used to tap up to 1200A of power off of the busway. A power takeoff section must be used when power in excess of the current-carrying capabilities of the plug-in stabs (800A) is required. A bolt-on fusible switch or circuit breaker unit can then be bolted to the power takeoff. 6.94 (176.3) 17.00 (431.8) (Minimum) T 9.00 (228.
UL low voltage busway Pow-R-Way III Technical Data TD01701001E Effective December 2013 Receptacle plug-in units Eaton’s unique receptacle plug-in unit design makes them the most flexible receptacle units in the industry. Pow-R-Way III receptacle plug-in units come fully assembled and wired, reducing installation time, and are built to order. They are CSAT and UL 857 Listed and come in five different configurations.
Technical Data TD01701001E UL low voltage busway Pow-R-Way III Effective December 2013 Plug-in device electrical data Table 61. Integrally Fused, Current Limiting Circuit Breaker Table 60. Circuit Breakers 100% rated breakers are not available for use in bus plugs. Contact Product Line for guidance.
Technical Data TD01701001E UL low voltage busway Pow-R-Way III Effective December 2013 Plug-in device electrical data (continued) Table 64. Fusible Unit Catalog Numbering System P3F 3 6 4 R G N H Table 63. Fusible Switch Horsepower and Short-Circuit Rating (Based on Fuse Class) Ampere Rating 240V 30 60 100 200 400 600 800 480V 30 60 100 200 400 600 800 600V 30 60 100 200 400 600 800 NEC Standard Maximum Maximum Symmetrical rms at Fuse Class 3 7.5 15 25 50 75 100 7.
Technical Data TD01701001E UL low voltage busway Pow-R-Way III Effective December 2013 Plug-in device physical data B A C E D F Figure 78. Bus Plugs Table 65. Standard Plug-In Units Plug-In Unit Dimensions in Inches (mm) Maximum Maximum Amperes Vac A B C Circuit Breaker Plug-In Units P3BFD (E- and 225 F-Frame breakers) P3BJD (J-Frame 250 breakers) P3BKD (K-Frame 400 breakers) Mechanical Terminal D E 600 21.20 (538.5) 12.36 (314.0) 5.43 (138.0) 4.00 (101.6) 6.25 (158.8) 600 23.26 (590.
Technical Data TD01701001E UL low voltage busway Pow-R-Way III Effective December 2013 Construction drawing 0.45 (11.4) 96.00 (2438.4) 111.44 (2830.6) 30.00 (762.0) A15 A14 F A12 120.0 (3048.0) 6.00 (152.4) 150.0 (3810.0) A12 Plug-In Unit 30.00 (762.0) A12 Outdoor Duct 2500 A 30 4W 25.00 (635.0) A13 Indoor Duct 44.00 (1117.6) A02 A03 17.00 (431.8) 48.00 (1219.2) A01 25.63 (651.0) A12 All Floors A11 24.00 (609.6) 12.00 (304.8) 36.00 (914.
Technical Data TD01701001E UL low voltage busway Pow-R-Way III Effective December 2013 Installation data Hoisting and positioning busway Pow-R-Way III is manufactured with two sets of lifting eyes at the ends of each piece to facilitate the hoisting and positioning of the busway during installation. Refer to Figure 80 for location of lifting eyes. Incorrect Joint Assembly: No Pow-R-Bridge Incorrect Joint Assembly: ”T“ and ”F“ Labels Misaligned Correct Joint Assembly Figure 81.
Technical Data TD01701001E UL low voltage busway Pow-R-Way III Effective December 2013 Final field fit program A field fit section of busway is typically an elbow or a short length of feeder that is intentionally left out of a run for later shipment. It is most often a mutually agreed upon section between the customer and the plant. The purpose of the program is to effectively manage the dimensional uncertainties that may be involved in a busway layout.
Technical Data TD01701001E UL low voltage busway Pow-R-Way III Effective December 2013 Final Field Fit Program FAX RELEASE! Fax Direct to Greenwood Factory. Ref. Drawing: G.O. # : Phone #: 864-942-6310 Item : Fax #: 864-942-6339 Customer to provide dimensions indicated by letters on field fit section of busway. “A” Dimension = (25-inch minimum) Edge of Housing A Edge of Housing Name: Company: Phone #: Date: List other field fit items released at this time: Requested Ship Date: Figure 84.
Technical Data TD01701001E UL low voltage busway Pow-R-Way III Specifications Part 1—General 1.01 Scope A. The contractor shall furnish and install the busway system including all necessary fittings, hangers, and accessories as specified herein and as shown on the contract drawings. 1.02 Related sections Effective December 2013 D.
Technical Data TD01701001E UL low voltage busway Pow-R-Way III Effective December 2013 2.04 Conductor busbars 2.07 Plug-in busway A. Busbars shall be fabricated from high strength, 57% conductivity aluminum or 99% conductivity copper and shall be suitably silver(or) tin-plated at all electrical contact surfaces. A. Where required, busway shall be of the plug-in type. Plug-in busway shall be available in standard 24.00-inch (609.
UL low voltage busway Pow-R-Way III Technical Data TD01701001E Effective December 2013 K. Current limiting circuit breaker type plug-in devices shall be units that provide integral time delay/thermal trip protection and current-limiting protection in one assembly. These breakers shall be UL rated at 200 kAIC at 240 Vac and 150 kAIC at 480 Vac, and shall be series-rated to protect all molded-case breakers downstream as shown on the contract drawings. L.
Technical Data TD01701001E Effective December 2013 UL low voltage busway Pow-R-Way III Eaton 1000 Eaton Boulevard Cleveland, OH 44122 United States Eaton.com © 2013 Eaton All Rights Reserved Printed in USA Publication No. TD01701001E / Z14688 December 2013 Eaton is a registered trademark. All other trademarks are property of their respective owners.
