VA 26 29 21-2010 DISCONNECT SWITCHES.pdf
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1、09-10 26 29 21 - 1 SECTION 26 29 21 DISCONNECT SWITCHES 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. PART 1 - GENERAL 1.1 DESCRIPTION This section specifies the furnishing, install
2、ation, and connection of low voltage disconnect switches. 1.2 RELATED WORK A. Section 26 05 11, REQUIREMENTS FOR ELECTRICAL INSTALLATIONS: General electrical requirements and items that are common to more than one section of Division 26. B. Section 26 05 21, LOW-VOLTAGE ELECTRICAL POWER CONDUCTORS A
3、ND CABLES 600 VOLTS AND BELOW: Cables and wiring. C. Section 26 05 26, GROUNDING AND BONDING FOR ELECTRICAL SYSTEMS: Requirements for personnel safety and to provide a low impedance path for possible ground faults. D. Section 26 05 33, RACEWAY AND BOXES FOR ELECTRICAL SYSTEMS: Conduits for cables an
4、d wiring. E. Section 26 29 11, LOW-VOLTAGE MOTOR STARTERS: Motor rated toggle switches. 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 26 05 11, REQUIREMENTS FOR ELECTRICAL
5、INSTALLATIONS. B. Shop Drawings: 1. Clearly present sufficient information to determine compliance with drawings and specifications. 2. Include electrical ratings, dimensions, mounting details, materials, enclosure types, and fuse types and classes. 3. Show the specific switch and fuse proposed for
6、each specific piece of equipment or circuit. C. Manuals: 1. Provide complete maintenance and operating manuals for disconnect switches, including technical data sheets, wiring diagrams, and information for ordering replacement parts. Deliver four copies to Provided by IHSNot for ResaleNo reproductio
7、n or networking permitted without license from IHS-,-,-09-10 26 29 21 - 2 the / Resident Engineer / COTR / two weeks prior to final inspection. 2. Terminals on wiring diagrams shall be identified to facilitate maintenance and operation. 3. Wiring diagrams shall indicate internal wiring and any inter
8、locking. D. Certifications: Two weeks prior to the final inspection, submit four copies of the following certifications to the /Resident Engineer/ /COTR/: 1. Certification by the manufacturer that the materials conform to the requirements of the drawings and specifications. 2. Certification by the c
9、ontractor that the materials have been properly installed, connected, and tested. 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 th
10、e text by designation only. B. National Electrical Manufacturers Association (NEMA): FU l-07 Low Voltage Cartridge Fuses KS l-06 Enclosed and Miscellaneous Distribution Equipment Switches (600 Volts Maximum) C. National Fire Protection Association (NFPA): 70-08 National Electrical Code (NEC) D. Unde
11、rwriters Laboratories, Inc. (UL): 98-04 Enclosed and Dead-Front Switches 248-00 . Low Voltage Fuses 977-94 . Fused Power-Circuit Devices PART 2 - PRODUCTS 2.1 LOW VOLTAGE FUSIBLE SWITCHES RATED 600 AMPERES AND LESS A. In accordance with UL 98, NEMA KS1, and NEC. B. Shall have NEMA classification Gen
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