A/E Name / Issue Description
A/E Project No. / Month, 00, 0000
SECTION 26 25 15 TRACK - BUSWAY SYSTEMs
PART 1 - GENERAL
1.01 RELATED DOCUMENTS
A. Drawings and general provisions of the Contract, including General Conditions and Division 01 Specification Sections, apply to this Section.
B. Specifications throughout all Divisions of the Project Manual are directly applicable to this Section, and this Section is directly applicable to them.
1.02 SUMMARY
A. Work Included. This specification covers the electrical characteristics and general requirements for a track busway system, hereafter referred to as “Track Busway”.
B. The system shall be designed for overhead distribution of electrical power intended to be used in research lab applications. Supporting designated work areas and equipment. Loads fed from a variety of plug-in units can be easily added or removed without shutting power down to the track busway.
1.03 REFERENCE STANDARDS
A. The latest published edition of a reference shall be applicable to this Project unless identified by a specific edition date.
B. All reference amendments adopted prior to the effective date of this Contract shall be applicable to this Project.
C. All materials, installation and workmanship shall comply with the applicable requirements and standards addressed within the following references:
1. Low Voltage Directive (73/23/EEC) including Amendment (93/68/EEC).
2. Low-voltage switchgear and control gear assemblies, Part 1: Type-tested and partially type-tested Assemblies, IEC 60439-1: 1999.
3. Low-voltage switchgear and control gear assemblies, Part 2: Particular requirements for busbar trunking systems (busways), IEC 60439-2: 2000.
4. UL 857 – Standard for Busways and Associated Fittings.
5. NFPA 70 - National Electric Code.
6. NEMA AB-1, Molded Case Circuit Breaker, Molded Case Switches, and Circuit Breaker Enclosures.
7. NEMA KS-1, Enclosed and Miscellaneous Distribution Equipment Switches (600 Volts maximum).
1.04 QUALITY ASSURANCE
A. Manufacturer shall be a firm with at least ten (10) years of successful manufacturing experience on products similar to that required for this Project.
B. NEMA Compliance: Comply with National Electrical Manufacturers' Association (NEMA) Standards BU 1, "Busways", and BU 1.1, "Instructions for Safe Handling, Installation, Operation, and Maintenance of Busway and Associated Fittings".
C. UL Label: All components of the busway system shall be UL-labeled whenever possible.
1.05 SUBMITTALS
A. Submittals shall be in accordance with specified procedures. Submit shop drawing and product data for record purposes prior to shipment..
B. Indicate construction details, including dimensions, weights, clearances, major component layout, power details. Include circuit breaker, fused plug-in, and cable schedule (if applicable), including cable lengths and plug-in schedules.
C. Include connection diagram for external wiring, and details of conduit and wiring connections and terminations.
D. Indicate special receiving and handling procedures.
E. Provide electrical characteristics and connection requirements for the system and accessories.
1.06 DELIVERY, STORAGE and HANDLING
A. Deliver equipment in factory-fabricated, water-resistant wrapping.
B. Store in a clean, dry space. Maintain factory wrapping or provide an additional heavy canvas or heavy plastic cover to protect units from dirt, water, construction debris, and traffic.
C. Handle equipment carefully to avoid damage to material components, enclosure, and finish.
1.07 WARRANTY
A. The Track Busway manufacturer shall guarantee the entire system against defective material and workmanship for a period of one (1) year from date of substantial completion.
B. Provide manufacturer's warranty form in which manufacturer agrees to repair or replace components that fails in materials or workmanship within specified warranty period.
PART 2 - PRODUCTS
2.01 GENERAL
A. All materials shall meet or exceed all applicable referenced standards, federal, state and local requirements, and conform to codes and ordinances of authorities having jurisdiction.
2.02 manufacturers
A. Universal Electric Corporation, STARLINE model (pricing agreement 5060001234).
B. Approved equal.
2.03 system description
A. Electrical Requirements.
1. Voltage: 120/208 V
2. Frequency: 60 Hz
3. Phase Ampacity: 100A
4. Neutral Ampacity: 225 A
5. Conductors: Qty 4 (Phases A, B, C and Neutral)
6. Grounding: Aluminum Casing
B. Environmental Requirements.
1. Indoor, Low Impedance System.
2. Ambient Operating Temperature:
a. 40°C / 104°F
b. 60°C / 140°F (0.8 Amp Rating Multiplier)
2.04 COMPONENTS
A. Ganeral. For each track busway system indicated, provide a complete assembly of conductor bars, busway housing, insulation, connectors, end caps, plug-in units, supports, and other components and accessories as needed to form a complete system of the type indicated. Busway shall be UL-listed for hanging on 10-foot centers.
B. Frame and Enclosure. Track busway housing shall be an aluminum extrusion designed to encase the busway conductors, provide a polarized means for attaching plug-in units and shall pass UL hypothetical finger probe test. Housing shall be 5, 10 or 20 ft standard length or lengths as shown on the drawings. Housing shall be extruded with slots to receive rod mount hangers to hang from the building structure and tabs for integration into the building ceiling system for recess mounting, “R” recessed option.
C. Conductors. All track busway conductors shall be copper, electrically isolated from the busway housing and shall be sized for 100% of the busway rated capacity at ambient temperatures up to 40 degrees C.
D. Top Feed Boxes. Provide manufacturer’s standard track busway full capacity fully recessed top feed boxes at locations shown on the drawings. Locate top feeds as close to the end of the busway run as possible to maximize usable busway length.
E. End Caps. Provide manufacturer’s standard track busway end caps at the end of each active length of busway.
F. Hanging Accessories: Provide manufacturer’s standard track busway hanging accessories as required to support the track busway recessed integrally in as recessed ceiling as shown on the drawings.
G. Plug-in Units.
1. Plug-in units shall be polarized to avoid incorrect installation.
2. All plug-in units shall be three phase with internal terminal blocks to allow circuit breaker phase connections to be field changes. Plug-in unit phasing shall be as noted on the drawings.
3. Plug-in units shall use circuit breakers for branch circuit protection.
4. Plug-in units shall have locking clips or bolt-on tabs to secure units to the busway.
5. Plug-in units that include drop cords shall be manufactured with cord grips and receptacles as specified in the drawings.
PART 3 - EXECUTION
3.01 field measurements
A. Verify dimensions at job site to ensure coordination of each busway with obstructions and approved routing. Submit fully dimensioned shop drawings indicating proposed routings, fittings and obtain formal approval from the Owner prior to start of fabrication.
3.02 INSTALLATION
A. Installation shall meet or exceed all applicable federal, state and local requirements, referenced standards and conform to codes and ordinances of authorities having jurisdiction.
B. All installation shall be in accordance with manufacturer’s published recommendations.
C. General. Install track busway products as shown, in accordance with the manufacturer's written instructions, the applicable requirements of NEC and recognized industry practices to ensure that products serve the intended function.
D. Runs. Busway shall be run as shown, including top feed boxes and as required. Install an end cap at the termination of each track busway section. Install busway top feed boxes as shown.
E. Track Busway Sections. Busway runs shall consist of lengths as shown on the drawings.
F. Connecting Sections of Track Busway. At a junction of Track Busway sections, the installer shall insert a male coupling end of housing into mating housing end to join (2) sections together. A manufacturer supplied tool shall assist in joining sections together.
G. End of Runs. End pieces and end caps shall be provided to install at the ends of each run.
H. Coordination. Final field measurements shall be made by the Contractor prior to release for manufacture to ensure coordination with other trades.
I. Support. All track busway shall be thoroughly and substantially supported in accordance with the National Electrical Code. Busways may be supported individually with approved hangers. Hangers shall not be more than 10 feet apart, and hanger rod size shall be per drawings. Hangers shall not block any plug-in openings.
J. Ceiling Integration. Recess mount track busway integrally in the lay-in ceiling as shown on the drawings. Coordinate installation details and requirements with the suspended ceiling contractor.
K. Bonding. Electrically bond and ground track busways and integral ground and ensure continuous electrical conductivity of the housing system to building ground connection.
L. Closure Strip. The closure strip can be cut and fitted to cover the bottom opening of the Track Busway housing to prevent dust and debris from gathering in the Track Busway.
M. Provide a minimum 10% spare plug-in units for each type provided.
N. Coordination. Final field measurements shall be made by the Contractor prior to release for manufacture to ensure coordination with other trades.
3.03 TESTING
A. Test track busway to ensure electrical continuity of bonding and grounding connections. Megger-check phase-to-phase, phase-to-neutral, and phase-to-ground insulation resistance levels. Tests shall be made with a Biddle Megger or approved test instrument at a voltage of not less than 1000 volts DC with readings taken after 30 seconds and 60 seconds of operation at Megger slip speed. Busway that does not meet manufacturers bus insulation resistance specifications shall be repaired or replaced and retested until an acceptable resistance is obtained.
3.04 identification
A. Refer to Section 26 01 00 for identification of track busways and plug-in units/wiring devices attached to the busway.
END OF SECTION 26 25 15
The University of Texas / track busway systemsMD Anderson Cancer Center / 26 25 15
MS101013 / 2 of 4