VA 26 24 19-2010 MOTOR CONTROL CENTERS.pdf
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1、09-10 26 24 19 - 1 SECTION 26 24 19 MOTOR CONTROL CENTERS SPEC WRITE NOTE: Delete between /_/ if not applicable to project. Also delete any other item or paragraph not applicable to the section and renumber the paragraphs. Motor control centers shall only be considered for projects that have a signi
2、ficant number of across-the-line motor starters. PART 1 - GENERAL 1.1 DESCRIPTION This section specifies the furnishing, complete installation, and connection of motor control centers. 1.2 RELATED WORK /A. Section 13 05 41, SEISMIC RESTRAINT REQUIREMENTS FOR NON-STRUCTURAL COMPONENTS: Seismic requir
3、ements for non-structural equipment./ B. Section 25 10 10, ADVANCED UTILITY METERING: Electricity meters installed in motor control centers. C. Section 26 05 11, REQUIREMENTS FOR ELECTRICAL INSTALLATIONS: General electrical requirements and items that are common to more than one section of Division
4、26. D. Section 26 05 21, LOW-VOLTAGE ELECTRICAL POWER CONDUCTORS AND CABLES (600 VOLTS AND BELOW): Cables and wiring. E. Section 26 05 26, GROUNDING AND BONDING FOR ELECTRICAL SYSTEMS: Requirements for personnel safety and to provide a low impedance path for possible ground fault currents. F. Sectio
5、n 26 05 71, ELECTRICAL SYSTEM PROTECTIVE DEVICE STUDY. G. Section 26 29 11, MOTOR STARTERS: Control and protection of motors. 1.3 QUALITY ASSURANCE Refer to Paragraph, QUALIFICATIONS, in Section 26 05 11, REQUIREMENTS FOR ELECTRICAL INSTALLATIONS. 1.4 SUBMITTALS A. Submit in accordance with Section
6、26 05 11, REQUIREMENTS FOR ELECTRICAL INSTALLATIONS. B. Catalog Data: Submit catalog data and information as required to demonstrate that materials conform to the specification requirements. Data shall include features, characteristics, ratings, and settings of all adjustable components. C. Shop Dra
7、wings: 1. Clearly present sufficient information to determine compliance with drawings and specifications. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-09-10 26 24 19 - 2 2. Include electrical ratings, enclosure type, dimensions, weights, mounting
8、 details, front view, side view, equipment and device arrangement, running overcurrent protection, branch circuit overcurrent protection, wiring diagrams, materials, connection diagrams for each motor control center, and nameplate schedule. 3. For starters: a list of overload sizes for each motor an
9、d / circuit breakers / fuse / sizes. D. Manuals: Two weeks prior to the final inspection, submit four copies of the following to the /Resident Engineer/ /COTR/: 1. Complete maintenance, operating and testing manuals, including wiring diagrams, technical data sheets, including load current, overload
10、relay and settings of adjustable relays, and information for ordering replacement parts: a. Include complete “As Installed“ diagrams that indicate all pieces of equipment and their interconnecting wiring. b. Include complete diagrams of the internal wiring for each piece of equipment, including “As
11、Installed“ revisions of the diagrams. c. The wiring diagrams shall identify the terminals to facilitate installation, maintenance, operation, and testing. d. Instructions for testing and adjusting overcurrent protective devices. E. Certification: Two weeks prior to final inspection, submit four copi
12、es of the following to the / Resident Engineer / COTR /: SPEC WRITER NOTE: Refer to VA Handbook H-18-8 for Seismic Design Requirements. Specify Region of Seismicity, based on location of the equipment so motor control center manufacturers can check/design seismic strength of their equipment. Delete
13、the following paragraph if the motor control center(s) is located outside the seismic zone. 1. Certification from the manufacturer that the motor control center(s) will withstand the design seismic event forces, and that the unit will be fully operational after the design seismic event at the projec
14、t site. 2. Certification by the manufacturer that the motor control centers conform to the requirements of the drawings and specifications. 3. Certification by the contractor that the motor control centers have been properly installed, adjusted, and tested. Provided by IHSNot for ResaleNo reproducti
15、on or networking permitted without license from IHS-,-,-09-10 26 24 19 - 3 1.5 APPLICABLE PUBLICATIONS A. Publications listed below (including amendments, addenda, revisions, supplements, and errata) form a part of this specification to the extent referenced. Publications are referenced in the text
16、by designation only. B. National Electrical Manufacturers Association (NEMA): ICS 1-05 . Industrial Control and Systems: General Requirements ICS 2-05 . Industrial Control and Systems: Controllers, Contactors, and Overhead Relays, Rated 600 volts ICS 6-06 . Industrial Control and Systems: Enclosures
17、 FU 1-02 Low-Voltage Cartridge Fuses 250-03 . Enclosures for Electrical Equipment (1000 Volts Maximum) C. National Fire Protection Association (NFPA): 70-05 National Electrical Code (NEC) D. Underwriters Laboratories, Inc. (UL): 845-05 . Motor Control Centers PART 2 - PRODUCTS 2.1 MOTOR CONTROL CENT
18、ERS A. Factory-assembled motor control centers shall comply with NEC, NEMA, and UL, and as shown on the drawings. B. Motor control centers shall be complete, floor-mounted, dead-front metal-enclosed, free-standing, grounded, indoor type. C. Wiring: The motor control centers shall be NEMA Standard, C
19、lass 1, Type B. D. Ratings: Ratings shall be not less than shown on the drawings. Interrupting ratings shall be not less than the maximum short circuit currents available at the motor control center location, as shown on the drawings / or as calculated as part of the Section 26 05 71, ELECTRICAL SYS
20、TEM PROTECTIVE DEVICE STUDY/. E. Motor control centers shall conform to the arrangements and details of the drawings and to the spaces designated for installation. F. The components and the control wiring shall conform to the approved shop drawings as furnished for the various applicable electrical
21、and mechanical sections of the specifications. G. All steel parts shall be factory-phosphatized, painted with primer, and baked enamel or lacquer finishes, except for ground connections. The paint and finish shall withstand a minimum of 1000 hours salt spray test. H. Vertical Sections: Provided by I
22、HSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-09-10 26 24 19 - 4 1. Approximately 90 in 2.25 M high, front, and rear line-up, dead-front assembly. Unit shall be designed to permit future additions or rearrangement of units. 2. The structure shall be NEMA-Type r
23、ated (Type 1, Type 3R, or Type 12) as indicated on the drawings or as required per the environment. 3. Spaces within the sections shall be suitable and adequately sized for starters and accessories as indicated on the drawings. 4. Mount the sections on adequate structural steel supports at the facto
24、ry, front, and rear, for the full length of each center. 5. Each space shall have an individual door with hinges and latches for present and future starters. 6. End panels shall be removable to facilitate future additions. 7. All section parts shall be accessible from the front for maintenance rearr
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