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Home My WebLink About200030 ELECTRICAL REQUIREMENTS.pdfL’Acquis Number: 12056 ____________________________________________________________________________________________ Matt the Miller's Tavern Carmel, Indiana Project No. 12056 ELECTRICAL REQUIREMENTS FOR MECHANICAL EQUIPMENT 20 00 30 � 1 SECTION 20 00 30 Electrical Requirements for Mechanical Equipment PART 1 � GENERAL 1.01 RELATED SECTIONS: A. Drawings, general provisions of the Contract, including General and Supplementary Conditions, and Division�1 Specification Sections and Division 21, 22, and 23 Specification Sections, apply to work of this Section. B. This section applies to Division 21, 22 and 23 Specification Sections. 1.02 SUMMARY: A. This section specifies the basic requirements for electrical components which are an integral part of packaged mechanical equipment. These components include, but are not limited to factory�installed motors, starters, and disconnect switches furnished as an integral part of packaged mechanical equipment. B. Specific electrical requirements (i.e. horsepower and electrical characteristics) for mechanical equipment are scheduled on the drawings. 1.03 RELATED DOCUMENTS: A. Related Sections: Separate electrical components and materials required for field installation and electrical connections are specified in Division 26. 1.04 REFERENCES: A. NEMA Standards MG 1: Motors and Generators. B. NEMA Standard ICS 2: Industrial Control Devices, Controller, and Assemblies. C. NEMA Standard 250: Enclosures for Electrical Equipment. D. NEMA Standard KS 1: Enclosed Switches. E. The current edition of The National Electrical Code: 1.05 SUBMITTALS: A. No separate submittal is required. Submit product data for motors, starters, and other electrical components with submittal data required for the equipment for which it serves, as required by the individual equipment specification sections. L’Acquis Number: 12056 ____________________________________________________________________________________________ Matt the Miller's Tavern Carmel, Indiana Project No. 12056 ELECTRICAL REQUIREMENTS FOR MECHANICAL EQUIPMENT 20 00 30 � 2 1.06 QUALITY ASSURANCE: A. Electrical components and materials shall be UL labeled. PART 2 � PRODUCTS 2.01 MOTORS: A. The following are basic requirements for simple or common motors. For special motors, more detailed and specific requirements are specified in the individual equipment specifications. 1. Torque characteristics shall be sufficient to satisfactorily accelerate the driven loads. 2. Motor sizes shall be large enough so that the driven load will not require the motor to operate in the service factor range. 2�speed motors shall have separate windings. 3. Temperature Rating: Rated for 40 deg. C environmental with maximum 50 deg. C temperature rise for continuous duty at full load. 4. Starting capability: Frequency of starts as indicated by automatic control system and not less than 5 evenly time spaced starts per hour for manually controlled motors. 5. Service Factor: 1.15 for polyphase motors and 1.35 for single�phase motors. 6. Motor construction: NEMA Standard MG 1, general purpose, continuous duty, Design "B", except "C" where required for high starting torque. a. Frames: NEMA Standard No. 48 or 54; use driven equipment manufacturer's standards to suit specific application. b. Bearings: (1) Ball or roller bearings with inner and outer shaft seals; (2) Greasable, except permanently sealed where motor is normally inaccessible for regular maintenance; (3) Designed to resist thrust loading where belt drives or other drives produce lateral or axial thrust in motor. (4) For fractional horsepower, light duty motors, sleeve type bearings are permitted. c. Enclosure Type: (1) Open drip�proof motors for indoor use where satisfactorily housed or remotely located during operation; (2) Guarded drip�proof motors where exposed to contact by employees or building occupants. (3) Weather protected Type I for outdoor use, Type II where not housed; (4) Totally enclosed with proper UL Class and Group listing for duty in hazardous locations. d. Overload protection: Built�in thermal overload protection and, where indicated, internal sensing device suitable for signaling and stopping motor at starter. L’Acquis Number: 12056 ____________________________________________________________________________________________ Matt the Miller's Tavern Carmel, Indiana Project No. 12056 ELECTRICAL REQUIREMENTS FOR MECHANICAL EQUIPMENT 20 00 30 � 3 e. Noise rating: "Quiet". f. Efficiency: "Energy Efficient" motors shall have a minimum efficiency as scheduled in accordance with IEEE Standard 112, test method B. If efficiency not specified, motors shall have a higher efficiency than "average standard industry motors", in accordance with IEEE Standard 112, test method B. g. Nameplate: Indicate the full identification of manufacturer, ratings, characteristics, construction, special features and similar information. 7. Except where noted or scheduled otherwise, electrical characteristics for motors 1/2 Hp and smaller shall be single phase, 60 hertz. Motors above 1/2 Hp shall be 3�phase, 60 hertz. 2.02 POLYPHASE MOTORS WITH ADDITIONAL REQUIREMENTS: A. All motors used with variable frequency drives shall have a grounded rotor to prevent arcing of the bearings. B. Motors Used with Reduced�Voltage and Multispeed Controllers: Match wiring connection requirements for controller with required motor leads. Provide terminals in motor terminal box, suited to control method. C. Motors Used with Variable Frequency Controllers: Ratings, characteristics, and features coordinated with and approved by controller manufacturer. 1. Windings: Copper magnet wire with moisture�resistant insulation varnish, designed and tested to resist transient spikes, high frequencies, and short time rise pulses produced by pulse�width modulated inverters. 2. Energy� and Premium�Efficient Motors: Class B temperature rise; Class F insulation. 3. Inverter�Duty Motors: Class F temperature rise; Class H insulation. 4. Thermal Protection: Comply with NEMA MG 1 requirements for thermally protected motors. D. Severe�Duty Motors: Comply with IEEE 841, with 1.15 minimum service factor. 2.03 STARTERS, ELECTRICAL DEVICES, AND WIRING: A. Motor Starter Characteristics: 1. Enclosures: NEMA 1, general purpose enclosures with padlock ears, except in wet locations shall be NEMA 3R with conduit hubs, or units in hazardous locations which shall have NEC proper class and division. 2. Type and size of starter shall be as recommended by motor manufacturer and the driven equipment manufacturer for applicable protection and start�up condition. B. Manual switches shall have: 1. Pilot lights and extra positions for multi�speed motors. L’Acquis Number: 12056 ____________________________________________________________________________________________ Matt the Miller's Tavern Carmel, Indiana Project No. 12056 ELECTRICAL REQUIREMENTS FOR MECHANICAL EQUIPMENT 20 00 30 � 4 2. Overload protection: Melting alloy type thermal overload relays. C. Magnetic Starters: 1. Maintained contact push buttons and pilot lights, properly arranged for single speed or multi�speed operation as indicated. 2. Trip�free thermal overload relays, each phase. 3. Interlocks, pneumatic switches and similar devices as required for coordination with control requirements of Division�23 Controls section. 4. Built�in 120�volt control circuit transformer, fused on line and load side, where service exceeds 120 volts. 5. Externally operated manual reset. 6. Under�voltage release or protection. 7. Phase failure protection on all poly�phase motors. D. Motor connections: 1. Flexible conduit, except where plug�in electrical cords are specifically indicated. 2.04 DISCONNECT SWITCHES: A. Fusible switches: Fused, each phase, heavy duty; horsepower rated; non�teasible quick�make, quick�break mechanism; dead front line side shield; Solderless lugs suitable for copper or aluminum conductors; spring reinforced fuse clips; electro silver plated current carrying parts; hinged doors; operating lever arranged for locking in the "OPEN" position; arc quenchers; capacity and characteristics as indicated or required for the intended duty. B. Non�fusible switches: For equipment 2 horsepower and smaller, shall be horsepower rated; toggle switch type; quantity of poles and voltage rating as indicated or required for the duty. For equipment larger than 2 horsepower, switches shall be the same as fusible type. 2.05 CAPACITORS: A. Features: 1. Individual unit cells 2. All welded steel housing 3. Each capacitor internally fused 4. Non�flammable synthetic liquid impregnant 5. Craft tissue insulation 6. Aluminum foil electrodes B. Size: KVAR size shall be as required to correct motor power factor to 90 percent or better. PART 3 � EXECUTION: L’Acquis Number: 12056 ____________________________________________________________________________________________ Matt the Miller's Tavern Carmel, Indiana Project No. 12056 ELECTRICAL REQUIREMENTS FOR MECHANICAL EQUIPMENT 20 00 30 � 5 3.01 This Contractor shall provide disconnect switches, motor starters, and other electrical devices as required by the National Electrical Code and as required for proper operation of his equipment except where specifically specified and scheduled to be provided by another trade. 3.02 Electrical equipment required for packaged mechanical equipment shall be installed in like manner as individually specified electrical equipment. Refer to Division 26 for installation requirements. 3.03 Power factor correction capacitors shall be installed on all motors 1 horsepower and larger that have an uncorrected power factor of less than 85% at rated load. END OF SECTION